Relevant bibliographies by topics / Droughts

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Droughts'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Droughts"

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Jedd, Theresa, Deborah Bathke, Duane Gill, Bimal Paul, Nicole Wall, Tonya Bernadt, Jacob Petr, Anthony Mucia, and Milan Wall. "Tracking Drought Perspectives: A Rural Case Study of Transformations Following an Invisible Hazard." Weather, Climate, and Society 10, no. 4 (August 15, 2018): 653–72. http://dx.doi.org/10.1175/wcas-d-17-0067.1.

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Abstract Rural towns are especially susceptible to the effects of drought because their economies are dependent on natural resources. However, they are also resilient in many ways to natural hazards because they are rich in civic engagement and social capital. Because of the diverse nature of drought’s impacts, understanding its complex dynamics and its effects requires a multidisciplinary approach. To study these dynamics, this research combines appreciative inquiry, the Community Capitals Framework, and a range of climatological monitoring data to assess the 2012–14 Great Plains drought’s effect on McCook, Nebraska. Community coping measures, such as water-use reduction and public health programs, were designed to address the immediate effects of heat and scant rainfall during the initial summer and the subsequent years. Residents generally reported the community was better prepared than in previous droughts, including the persistent multiyear early-2000s drought. However, the results highlight wide variation in community perspectives about the drought’s severity and impacts, as well as divergent experiences and coping responses. Despite these factors, we find evidence of the transformative potential of moving from drought coping to drought mitigation. We attribute the city’s resilience to the ability to draw upon prior experience with droughts, having a formal municipal plan, and strong human and social capital to coordinate individual knowledge and expertise across agencies. We suggest that droughts have served a catalytic function, prompting the community to transform land-use practices, water conservation planning, and built infrastructure in lasting ways.
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Teweldebirhan Tsige, Dawit, Venkatesh Uddameri, Farhang Forghanparast, Elma Annette Hernandez, and Stephen Ekwaro-Osire. "Comparison of Meteorological- and Agriculture-Related Drought Indicators across Ethiopia." Water 11, no. 11 (October 24, 2019): 2218. http://dx.doi.org/10.3390/w11112218.

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Meteorological drought indicators are commonly used for agricultural drought contingency planning in Ethiopia. Agricultural droughts arise due to soil moisture deficits. While these deficits may be caused by meteorological droughts, the timing and duration of agricultural droughts need not coincide with the onset of meteorological droughts due to soil moisture buffering. Similarly, agricultural droughts can persist, even after the cessation of meteorological droughts, due to delayed hydrologic processes. Understanding the relationship between meteorological and agricultural droughts is therefore crucial. An evaluation framework was developed to compare meteorological- and agriculture-related drought indicators using a suite of exploratory and confirmatory tools. Receiver operator characteristics (ROC) was used to understand the covariation of meteorological and agricultural droughts. Comparisons were carried out between SPI-2, SPEI-2, and Palmer Z-index to assess intraseasonal droughts, and between SPI-6, SPEI-6, and PDSI for full-season evaluations. SPI was seen to correlate well with selected agriculture-related drought indicators, but did not explain all the variability noted in them. The correlation between meteorological and agricultural droughts exhibited spatial variability which varied across indicators. SPI is better suited to predict non-agricultural drought states than agricultural drought states. Differences between agricultural and meteorological droughts must be accounted for in order to devise better drought-preparedness planning.
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He, Yuanhuizi, Fang Chen, Huicong Jia, Lei Wang, and Valery G. Bondur. "Different Drought Legacies of Rain-Fed and Irrigated Croplands in a Typical Russian Agricultural Region." Remote Sensing 12, no. 11 (May 26, 2020): 1700. http://dx.doi.org/10.3390/rs12111700.

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Droughts are one of the primary natural disasters that affect agricultural economies, as well as the fire hazards of territories. Monitoring and researching droughts is of great importance for agricultural disaster prevention and reduction. The research significance of investigating the hysteresis of agricultural to meteorological droughts is to provide an important reference for agricultural drought monitoring and early warnings. Remote sensing drought monitoring indices can be employed for rapid and accurate drought monitoring at regional scales. In this paper, the Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation indices and the surface temperature product are used as the data sources. Calculating the temperature vegetation drought index (TVDI) and constructing a comprehensive drought disaster index (CDDI) based on the crop growth period allowed drought conditions and spatiotemporal evolution patterns in the Volgograd region in 2010 and 2012 to be effectively monitored. The causes of the drought were then analyzed based on the sensitivity of a drought to meteorological factors in rain-fed and irrigated lands. Finally, the lag time of agricultural to meteorological droughts and the hysteresis in different growth periods were analyzed using statistical analyses. The research shows that (1) the main drought patterns in 2010 were spring droughts from April to May and summer droughts from June to August, and the primary drought patterns in 2012 were spring droughts from April to June, with an affected area that reached 3.33% during the growth period; (2) local drought conditions are dominated by the average surface temperature factor. Rain-fed lands are sensitive to the temperature and are therefore prone to summer droughts. Irrigated lands are more sensitive to water shortages in the spring and less sensitive to extremely high temperature conditions; (3) there is a certain lag between meteorological and agricultural droughts during the different growth stages. The strongest lag relationship was found in the planting stage and the weakest one was found in the dormancy stage. Therefore, the meteorological drought index in the growth period has a better predictive ability for agricultural droughts during the appropriately selected growth stages.
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Lee, Sang-Min, Hi-Ryong Byun, and Hiroshi L. Tanaka. "Spatiotemporal Characteristics of Drought Occurrences over Japan." Journal of Applied Meteorology and Climatology 51, no. 6 (June 2012): 1087–98. http://dx.doi.org/10.1175/jamc-d-11-0157.1.

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AbstractThe drought climate of Japan from 1902 to 2009 was analyzed using an effective drought index (EDI). Drought regions were identified by hierarchical cluster analysis using drought characteristics (duration, severity, and onset and end dates) obtained from 50 observation stations. The results indicated that droughts could be divided into four groups (G1–G4) that reflected the local climate. The four groups were related to precipitation as follows. The summer rainy season affected groups G2–G4, in which droughts occurred mainly during spring and summer and were relieved before and after the rainy season. The G1 group was not affected by the summer rainy season and droughts were spread evenly throughout the year; it even had cases of droughts relieved by winter snow. All groups included dry conditions over the 108-yr period, and the driest conditions occurred in the late twentieth century. The statistical analysis of drought data showed that a total of 23 country-wide droughts occurred and that the most extreme droughts occurred in 1939–41 and 1984–85, with an EDI of −1.55. In addition, four dry seasons (1939–45, 1997–98, 1994–97, and 2005–09) were found using regime shift analysis. Regional droughts occurred 54, 54, 49, and 59 times in groups G1–G4, respectively. On average, short-term droughts with a duration shorter than 6 months occurred 3.5 times per decade, whereas long-term droughts extending over 1 yr occurred 0.3 times per decade. The drought duration and intensity were used to calculate the statistical return period of country-wide droughts. The 1939–41 drought had the longest return period, at 104.7 yr. The 1987–88 and 1995–97 droughts had return periods of 65.9 and 65.5 yr, respectively.
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Kim, Woon Mi, and Christoph C. Raible. "Dynamics of the Mediterranean droughts from 850 to 2099 CE in the Community Earth System Model." Climate of the Past 17, no. 2 (April 22, 2021): 887–911. http://dx.doi.org/10.5194/cp-17-887-2021.

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Abstract. In this study, we analyze the dynamics of multi-year droughts over the western and central Mediterranean for the period of 850–2099 CE using the Community Earth System Model version 1.0.1. Overall, the model is able to realistically represent droughts over this region, although it shows some biases in representing El Niño–Southern Oscillation (ENSO) variability and mesoscale phenomena that are relevant in the context of droughts over the region. The analysis of the simulations shows that there is a discrepancy among diverse drought metrics in representing duration and frequencies of past droughts in the western and central Mediterranean. The self-calibrated Palmer drought severity index identifies droughts with significantly longer duration than other drought indices during 850–1849 CE. This re-affirms the necessity of assessing a variety of drought indices in drought studies in the paleoclimate context as well. Independent of the choice of the drought index, the analysis of the period 850–1849 CE suggests that Mediterranean droughts are mainly driven by internal variability of the climate system rather than external forcing. Strong volcanic eruptions show no connection to dry conditions but instead are connected to wet conditions over the Mediterranean. The analysis further shows that Mediterranean droughts are characterized by a barotropic high-pressure system together with a positive temperature anomaly over central Europe. This pattern occurs in all seasons of drought years, with stronger amplitudes during winter and spring. The North Atlantic Oscillation (NAO) and ENSO are also involved during Mediterranean multi-year droughts, showing that droughts occur more frequently with positive NAO and La Niña-like conditions. These modes of variability play a more important role during the initial stage of droughts. As a result, the persistence of multi-year droughts is determined by the interaction between the regional atmospheric and soil moisture variables, i.e., the land–atmosphere feedbacks, during the transition years of droughts. These feedbacks are intensified during the period 1850–2099 CE due to the anthropogenic influence, thus reducing the role of modes of variability on droughts in this period. Eventually, the land–atmosphere feedbacks induce a constant dryness over the Mediterranean region for the late 21st century relative to the period 1000–1849 CE.
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Bae, Hyedeuk, Heesook Ji, Yoon-Jin Lim, Young Ryu, Moon-Hyun Kim, and Baek-Jo Kim. "Characteristics of drought propagation in South Korea: relationship between meteorological, agricultural, and hydrological droughts." Natural Hazards 99, no. 1 (September 20, 2019): 1–16. http://dx.doi.org/10.1007/s11069-019-03676-3.

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Abstract To investigate the propagation of meteorological droughts to agricultural and hydrological droughts, the relationship between droughts was analyzed using observed precipitation and agricultural reservoir and dam storage levels with SPI from 1998 to 2015 in South Korea. For the relationship between different types of droughts, we find that the occurrence of meteorological droughts after concentrated precipitation in the wet season (from June to September) tends not to lead to agricultural or hydrological droughts. A lack of precipitation from April to September, when large volumes of irrigation water are consumed, triggers both meteorological and agricultural droughts. In the case of hydrological droughts propagated from meteorological droughts, precipitation deficits in the dry season (between October and March) caused decrease in dam storage levels only. The occurrence of all different types of droughts is associated with extreme meteorological droughts, which are mainly caused by precipitation deficits in the wet season or prolonged rainfall shortages; in these cases, meteorological droughts led to agricultural and hydrological droughts. An analysis of the seasonal characteristics of storage level changes that in the wet season, agricultural reservoir storage levels are more dependent on precipitation deficits than dam storage levels. On other hand, when precipitation deficits were recorded in the dry season, agricultural reservoir storage levels went up, but dam storage levels dropped. The propagation of meteorological droughts to agricultural and hydrological droughts depends not only on drought severity but also on the drought timing. These findings may contribute to establishing a comprehensive drought monitoring system.
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Zhang, Linqi, Yi Liu, Liliang Ren, Adriaan J. Teuling, Ye Zhu, Linyong Wei, Linyan Zhang, et al. "Analysis of flash droughts in China using machine learning." Hydrology and Earth System Sciences 26, no. 12 (June 24, 2022): 3241–61. http://dx.doi.org/10.5194/hess-26-3241-2022.

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Abstract. The term “flash drought” describes a type of drought with rapid onset and strong intensity, which is co-affected by both water-limited and energy-limited conditions. It has aroused widespread attention in related research communities due to its devastating impacts on agricultural production and natural systems. Based on a global reanalysis dataset, we identify flash droughts across China during 1979–2016 by focusing on the depletion rate of weekly soil moisture percentile. The relationship between the rate of intensification (RI) and nine related climate variables is constructed using three machine learning (ML) technologies, namely, multiple linear regression (MLR), long short-term memory (LSTM), and random forest (RF) models. On this basis, the capabilities of these algorithms in estimating RI and detecting droughts (flash droughts and traditional slowly evolving droughts) were analyzed. Results showed that the RF model achieved the highest skill in terms of RI estimation and flash drought identification among the three approaches. Spatially, the RF-based RI performed best in southeastern China, with an average CC of 0.90 and average RMSE of the 2.6 percentile per week, while poor performances were found in the Xinjiang region. For drought detection, all three ML technologies presented a better performance in monitoring flash droughts than in conventional slowly evolving droughts. Particularly, the probability of detection (POD), false alarm ratio (FAR), and critical success index (CSI) of flash drought derived from RF were 0.93, 0.15, and 0.80, respectively, indicating that RF technology is preferable in estimating the RI and monitoring flash droughts by considering multiple meteorological variable anomalies in adjacent weeks to drought onset. In terms of the meteorological driving mechanism of flash drought, the negative precipitation (P) anomalies and positive potential evapotranspiration (PET) anomalies exhibited a stronger synergistic effect on flash droughts compared to slowly developing droughts, along with asymmetrical compound influences in different regions of China. For the Xinjiang region, P deficit played a dominant role in triggering the onset of flash droughts, while in southwestern China, the lack of precipitation and enhanced evaporative demand almost contributed equally to the occurrence of flash drought. This study is valuable to enhance the understanding of flash droughts and highlight the potential of ML technologies in flash drought monitoring.
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Masih, I., S. Maskey, F. E. F. Mussá, and P. Trambauer. "A review of droughts on the African continent: a geospatial and long-term perspective." Hydrology and Earth System Sciences 18, no. 9 (September 17, 2014): 3635–49. http://dx.doi.org/10.5194/hess-18-3635-2014.

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Abstract. This paper presents a comprehensive review and analysis of the available literature and information on droughts to build a continental, regional and country level perspective on geospatial and temporal variation of droughts in Africa. The study is based on the review and analysis of droughts occurred during 1900–2013, as well as evidence available from past centuries based on studies on the lake sediment analysis, tree-ring chronologies and written and oral histories and future predictions from the global climate change models. Most of the studies based on instrumental records indicate that droughts have become more frequent, intense and widespread during the last 50 years. The extreme droughts of 1972–1973, 1983–1984 and 1991–1992 were continental in nature and stand unique in the available records. Additionally, many severe and prolonged droughts were recorded in the recent past such as the 1999–2002 drought in northwest Africa, 1970s and 1980s droughts in western Africa (Sahel), 2010–2011 drought in eastern Africa (Horn of Africa) and 2001–2003 drought in southern and southeastern Africa, to name a few. The available (though limited) evidence before the 20th century confirms the occurrence of several extreme and multi-year droughts during each century, with the most prolonged and intense droughts that occurred in Sahel and equatorial eastern Africa. The complex and highly variant nature of many physical mechanisms such as El Niño–Southern Oscillation (ENSO), sea surface temperature (SST) and land–atmosphere feedback adds to the daunting challenge of drought monitoring and forecasting. The future predictions of droughts based on global climate models indicate increased droughts and aridity at the continental scale but large differences exist due to model limitations and complexity of the processes especially for Sahel and northern Africa. However, the available evidence from the past clearly shows that the African continent is likely to face extreme and widespread droughts in future. This evident challenge is likely to aggravate due to slow progress in drought risk management, increased population and demand for water and degradation of land and environment. Thus, there is a clear need for increased and integrated efforts in drought mitigation to reduce the negative impacts of droughts anticipated in the future.
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Masih, I., S. Maskey, F. E. F. Mussá, and P. Trambauer. "A review of droughts in the African continent: a geospatial and long-term perspective." Hydrology and Earth System Sciences Discussions 11, no. 3 (March 6, 2014): 2679–718. http://dx.doi.org/10.5194/hessd-11-2679-2014.

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Abstract. This paper presents a comprehensive review and analysis of the available literature and information on droughts to build a continental, regional and country level perspective on geospatial and temporal variation of droughts in Africa. The study is based on the review and analysis of droughts occurred during 1900–2013 as well as evidence available from past centuries based on studies on the lake sediment analysis, tree-ring chronologies and written and oral histories and future predictions from the global climate change models. Most of the studies based on instrumental records indicate that droughts have become more frequent, intense and widespread during the last 50 yr. The extreme droughts of 1972–1973, 1983–1984 and 1991–1992 were continental in nature and stand unique in the available records. Additionally, many severe and prolonged droughts were recorded in the recent past such as the 1999–2002 drought in Northwest Africa, 1970s and 1980s droughts in West Africa (Sahel), 2010–2011 drought in East Africa (Horn of Africa) and 2001–2003 drought in Southern and Southeast Africa, to name a few. The available (though limited) evidence before the 20th century confirms the occurrence of several extreme and multi-year droughts during each century, with the most prolonged and intense droughts that occurred in Sahel and Equatorial East Africa regions. Complex and highly variant nature of many physical mechanisms such as El Niño-Southern Oscillation (ENSO), Sea Surface Temperature (SST) and land–atmosphere feedback adds to the daunting challenge of drought monitoring and forecasting. The future predictions of droughts based on global climate models indicate increased droughts and aridity at the continental scale but large differences exist due to model limitations and complexity of the processes especially for Sahel and North Africa regions. However, the available evidence from the past clearly shows that the African continent is likely to face extreme and widespread droughts in future. This evident challenge is likely to aggravate due to slow progress in drought risk management, increased population and demand for water and degradation of land and environment. Thus, there is a clear need for increased and integrated efforts in drought mitigation to reduce the negative impacts of droughts anticipated in future.
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Burgdorf, Angela-Maria, Stefan Brönnimann, and Jörg Franke. "Two types of North American droughts related to different atmospheric circulation patterns." Climate of the Past 15, no. 6 (December 19, 2019): 2053–65. http://dx.doi.org/10.5194/cp-15-2053-2019.

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Abstract. Proxy-based studies suggest that the southwestern USA is affected by two types of summer drought, often termed Dust Bowl-type droughts and 1950s-type droughts. The spatial drought patterns of the two types are distinct. It has been suggested that they are related to different circulation characteristics, but a lack of observation-based data has precluded further studies. In this paper, we analyze multi-annual summer droughts in North America back to 1600 in tree-ring-based drought reconstructions and in a global, monthly three-dimensional reconstruction of the atmosphere. Using cluster analysis of drought indices, we confirm the two main drought types and find a similar catalog of events as previous studies. These two main types of droughts are then analyzed with respect to 2 m temperatures (T2m), sea-level pressure (SLP), and 500 hPa geopotential height (GPH) in boreal summer. 1950s-type droughts are related to a stronger wave train over the Pacific–North American sector than Dust Bowl-type droughts, whereas the latter show the imprint of a poleward-shifted jet and establishment of a Great Plains ridge. The 500 hPa GPH patterns of the two types differ significantly not only over the contiguous United States and Canada but also over the extratropical North Atlantic and the Pacific. Dust Bowl-type droughts are associated with positive GPH anomalies, while 1950s-type droughts exhibit strong negative GPH anomalies. In comparison with 1950s-type droughts, the Dust Bowl-type droughts are characterized by higher sea-surface temperatures (SSTs) in the northern North Atlantic. Results suggest that atmospheric circulation and SST characteristics not only over the Pacific but also over the extratropical North Atlantic affect the spatial pattern of North American droughts.
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Dissertations / Theses on the topic "Droughts"

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Quiring, Steven M. "Developing a real-time agricultural drought monitoring system for Delaware." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.86 Mb , 207 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/3181867.

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Guinan, Patrick E. "Seasonally adjusted index for projecting agricultural drought /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164510.

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Bellamy, John Thomas. "Drought frequency and risk analysis in the Upper Green River Basin, Wyoming." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1798480881&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Dube, Carolina. "The impact of Zimbabwe's drought policy on Sontala rural community in Matabeleland South Province /." Link to the online version, 2008. http://hdl.handle.net/10019/1768.

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Chbouki, Nabil. "Spatio-temporal characteristics of drought as inferred from tree-ring data in Morocco." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185851.

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Long-term tree-ring series of Cedrus atlantica have been utilized to reconstruct and characterize past drought occurrences in Morocco. Based on the close relationship between tree growth and rainfall variations, the best tree-ring indicator of drought has been found to be, x₀ = μ -.75σ, with μ and σ the mean and standard deviation of the tree-ring series. In Morocco, drought is a short event lasting 1.7 years on average with 84% of the events lasting less than 2 years. The average maximum duration exceeds 4 years. It is associated with a 40% deficit about normal moisture availability which can add up to more than 125% when the anomalies persist. The average empirical recurrence interval of drought is 8 years. Long-term persistence has been characterized by the Hurst coefficient. Over the domain of study, the mean Hurst coefficient is .765. The tree-ring series show a periodic behavior with two major peaks at 22 and 66 years. Drought characteristics have been extended from the tree-ring sites to other regions such as the agricultural plains using geostatistical methods. The drought prone areas are located in central Morocco, including the Sais, the Gharb and central Middle Atlas, which experience longer, more severe and more persistent droughts. The northern latitudes experience milder and shorter drought events. The cost for spatial extension of the results was greater kriging errors which make the estimates less reliable. However, cokriging significantly improved the reliability and the quality of the estimates. A regionalization, using cluster analysis, was found to follow the natural climatic and orographic zones of north central Morocco. The tree-ring data were used to reconstruct spatial patterns of moisture anomalies for the period 1845-1974. Three atmospheric factors appear to be important: (1) the relative strength and position of the Azores High, (2) the importance and location of the local cyclogenesis centers, (3) the importance of the northeastern perturbations coming from the Mediterranean sea. The periods 1860-1890, 1925-1950 and the 1970's are associated with dry anomalies while the periods 1900-1920 and 1950-1970 are associated with wet anomalies. They exhibit a rhythmic succession with a 20-year periodicity.
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Kebede, Yohannes. "Economic evaluation of post-drought recovery agricultural project : the case of Tegulet and Bulga District, Shoa Province, Ethiopia." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63894.

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Singh, Kamal. "Drought, relief and rural communities : special report no. 9." Association for Rural Advancement (AFRA), 1993. http://hdl.handle.net/10962/68651.

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The Association for Rural Advancement (AFRA) has run a Drought Project since October 1992. The project's primary focus was to monitor drought conditions in the AFRA's operational area and to assist communities to access relief through providing them with relevant information and helping them to submit proposals to relief agencies. In attempting to do this, it became clear that the effects of drought on rural black communities was not a well understood phenomenon. We also found that relief strategies were informed more by economic, agricultural and meteorological criteria than social ones. This Special Report aims to contribute to the development of a more appropriate drought management strategy, especially with regard to rural communities. In attempting to make this contribution, the Report examines the factors involved in redefining drought and drought relief perspectives in relation to rural communities. However, the range of factors involved and the scarcity of useful information on them, dictate that this is merely an introduction. The complexities and implications arising from the introduction of these factors into drought management in South Africa should be explored on an on-going basis. Because of the scarcity of relevant information about the effects of drought on black rural communities in South Africa, this Report has relied on AFRA's limited monitoring of such communities. Some information was also gathered through Participatory Rural Appraisal (PRA) methods. There were also difficulties in getting information about relief schemes and their operations as most relief agencies were reluctant to release this information. As a result, almost all the relief related information in this Special Report was obtained from publications and reports of the National Consultative Forum on Drought.
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Rudebeck, Hugo. "HYDROLOGICAL DROUGHTS IN SWEDEN: Mapping of historical droughts and identificationof primary driving climate variables andcatchment properties." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-350520.

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This study investigated the relationship between hydrological, and to some extent, meteorological droughts, and meteorological variables and catchment characteristics in 235 Swedish catchments between 1983 and 2013. This was done in order to investigate what factors affect the drought sensitivity in Swedish catchments and to map the occurrence of droughts in Sweden between 1983 and 2013. There have been studies about which meteorological phenomena and catchment characteristics that promote hydrological droughts, but for Sweden this is relatively unexplored. To investigate droughts during the study period three indices were used: the Standardized Precipitation Index (SPI), which is an index for meteorological droughts, the Standardized Streamflow Index (SSI), which predicts hydrological droughts and a threshold index for streamflow droughts. These indices were used to identify the number of drought events and the total number of drought days. For the majority of the 235 Swedish catchments there were no significant trends for the number of drought events or the total number of drought days during the 30-year period. The SPI and the SSI were found to correlate best in time when adding a one-month lag period to the SSI time series. The correlations between the indices and the meteorological variables and the catchments properties varied depending on how the catchments were grouped according to latitude or elevation. For example, the number of drought events was positively correlated to the mean elevation of the catchments in north and central Sweden when using the SSI while there were no significant correlations with elevation in southern Sweden. Another example is that it was almost only in northern Sweden where significant correlations between the percentage of bedrock and drought characteristics were identified. The percentage of bedrock can be used as an indication for how much groundwater a catchment can store. The correlations also look different for the different indices. For example, when looking at all catchments together the number of drought events identified with the SPI was negatively correlated to latitude and mean elevation while the number of drought events identified with the SSI was positively correlated to the same variables. For further research into this topic it would be wise to study winter and summer droughts separately to better identify which are the driving variables.
I den här studien undersöktes sambanden mellan hydrologiska, och till viss del meteorologiska, torrperioder och bakomliggande meteorologiska drivvariabler och avrinningsområdesegenskaper i 235 svenska avrinningsområden mellan 1983 och 2013. Detta gjordes i syfte att undersöka vilka faktorer som påverkar känsligheten för torka i svenska avrinningsområden och för att kartlägga förekomsten av torrperioder i Sverige mellan 1983 och 2013. Internationellt finns det studier på vilka meteorologiska fenomen och egenskaper hos avrinningsområden som leder till risk för fler torrperioder, men för Sverige är det ett relativt outforskat område. För att undersöka torrperioder under den aktuella perioden användes tre index: Standardized Precipitation Index (SPI), vilket är ett index för meteorologiska torrperioder, Standardized Streamflow Index (SSI), som används för hydrologiska torrperioder och ett tröskelvärdes-index för att identifiera hydrologisk torka. Indexen användes för att identifiera antalet torrperioder och totala antalet dagar med torka under studieperioden. För majoriteten av de 235 avrinningsområdena gick det inte att se några signifikanta trender för antalet torrperioder eller totala antalet dagar med torka under perioden 1983-2013. SPI och SSI korrelerade bäst med varandra över tiden när SSI-tidsserien försköts med en månad. Korrelationerna mellan torrperioderna identifierade med de olika indexen och de meteorologiska variablerna och avrinningsområdesegenskaperna varierade beroende på hur avrinningsområdena grupperades efter latitud eller medelhöjd. Till exempel, i norra och centrala Sverige korrelerade antalet torrperioder för SSI positivt med medelhöjden medan det i södra Sverige inte fanns några signifikanta korrelationer. Ett annat exempel är att det nästan bara var i norra Sverige som det fanns korrelationer mellan procenten berggrund och de identifierade torrperiodsegenskaperna. Procenten berggrund i jordlagret kan användas som en indikation på hur mycket grundvatten som kan lagars i ett avrinningsområde. Korrelationerna skiljde sig också åt för de olika indexen. Till exempel, sett över alla avrinningsområden så var antalet torrperioder beräknat med SPI negativt korrelerade med latitud och medelhöjd medan antalet torrperioder beräknat med SSI var positivt korrelerade med dessa egenskaper. För vidare forskning inom detta område rekommenderas att titta separat på vinter- och sommartorkor för att bättre kunna identifiera potentiella drivvariabler.
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Ren, Xiaomeng, and University of Lethbridge Faculty of Arts and Science. "Agricultural vulnerability to drought in southern Alberta : a quantitative assessment." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2007, 2007. http://hdl.handle.net/10133/398.

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Agricultural vulnerability is generally referred to as the degree to which agricultural systems are likely to experience harm due to a stress. In this study, an existing analytical method to quantify vulnerability was adopted to assess the magnitude as well as the spatial pattern of agricultural vulnerability to varying drought conditions in Southern Alberta. Based on the farm reported data and remote sensing imagery, two empirical approaches were developed to implement vulnerability assessment in Southern Alberta at the quarter-section and 30 meter by 30 meter pixel levels. Cereal crop yield and the Standardized Precipitation Index (SPI) were specified as the agricultural wellbeing and stress pair in the study. Remote sensing data were used to generate cereal crop yield estimations, which were then implemented in vulnerability quantification. The utility of the remote sensing data source for vulnerability assessment were proved. The spatial pattern of agricultural vulnerability to different severity and duration of drought were mapped.
xii, 127 leaves : ill. ; 29 cm.
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Stockton, Charles W., David M. Meko, and William R. Boggess. "Drought History and Reconstructions from Tree Rings." Laboratory of Tree-Ring Research, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/302684.

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Books on the topic "Droughts"

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Karanth, G. K. Surviving droughts. Bombay: Himalaya Pub. House, 1995.

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Franchino, Vicky. Droughts. Ann Arbor, Mich: Cherry Lake Pub., 2012.

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Scheff, Duncan. Droughts. Oxford: Raintree, 2003.

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Inc, World Book, ed. Droughts. 2nd ed. Chicago: World Book, 2009.

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B, Fradin Dennis, ed. Droughts. Washington, D.C: National Geographic, 2008.

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ill, Ceolin Andre, ed. Droughts. New York, NY: HarperCollins Publishers, 2017.

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Park, Louise. Droughts. North Mankato, MN: Smart Apple Media, 2007.

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Allaby, Michael. Droughts. New York: Facts On File, 1998.

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Fradin, Judith Bloom. Droughts. Washington, D.C: National Geographic, 2008.

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Wendorff, Anne. Droughts. Minneapolis, MN: Bellwether, 2008.

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Book chapters on the topic "Droughts"

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Tian, Guoliang, and Vijendra K. Boken. "Monitoring Agricultural Drought in China." In Monitoring and Predicting Agricultural Drought. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195162349.003.0039.

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Droughts account for more than half of the total number of natural disasters faced by China. Serious droughts impact industrial production, water supply, people’s lives, and the ecological environment, which causes significant losses to the national economy. Because of increasing water shortages, drought has become one of the most important factors that limits agricultural production, especially in the north where droughts occur frequently. According to the Chinese terminology, if reduction in crop yields in an area is more than three-tenths of the average, the area is called a “damaged area,” and if the reduction is more than eight-tenths, the area is declared a “nonyield area” (Lu and Yang, 1992; State Statistical Bureau, 1996; Chen, 2000). Drought has been the most serious natural disaster in Chinese history. Serious droughts occurred more than 1000 times from 206 B.C. to 1949 A.D. (Zhang, 1990; Li and Lin, 1993), or once about every two years. Over the years, the eastern part of China has become more drought prone. Drought impacts have lessened since 1949 because the government has improved irrigation facilities. Nevertheless, agricultural production is still affected by drought because yields of most crops depend on weather conditions. Figure 28.1 shows the yearly variation in the total area affected by droughts since 1949. The most serious droughts occurred during the 1960s and the 1970s, and drought area has gradually increased. Although serious drought occurred during 1978–79, droughts were mild during 1970–77. The droughts always damaged a greater area than did floods in a decade. Figure 28.2 presents the spatial distribution of droughts from 1951 to 1991. In particular, four regions were identified where the frequency of drought was significantly high (Li and Lin, 1993): (1) Huanghuaihai region in the North China Plain, (2) Hebei, Shanxi, Shandong, Henan, and Shaanxi provinces, (3) the coastal south China, in particular the coastal area in Guangdong and Fujian provinces, and (4) the southwestern part of southwest China, mainly the southern part of Yunnan and Sichuan provinces.
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"PROSPECTS FOR THE PREDICTION OF METEOROLOGICAL DROUGHT." In Droughts, 51. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-36.

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"that c p ef ofsotr -t dsisoausltderbeemeu rg se e d to minimi and optimise n cy th ree li uesfe an o d se frreeh devas caebnitl it taatt te iionng nological advancements in climate-based tech­ nologies for drought monitoring, diagnosis, and p in rveeds ic tm tio en n t . s H in o w se ecv to erra , l K pr eendyias as h te arspm la andne in gmaanndy m me anntasg em th eanttahcatv iv e itie bse . enT he m se adien clu at det the invest­ he Kenya M Me otneiotroorlionggicC al e D nt e re paarn tm deinntaagnrdicRue lt guiroanlaalnDdrowuagth er t resources activities, among many other sectors. aSvuocihdesfe fo ct r o ts r al m ust, however, be integrated to drought prepared cnoens fl sic ‘ tsshoacnkda bs p o ro rb v e id rs e ’ . effective ----- i -." In Droughts, 97. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-66.

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"AN ASSESSMENT OF THE DROUGHT HAZARD IN MOROCCO." In Droughts, 309–16. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-86.

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"icnodm ic persehceannsb iv e e fo ruen vi dew in aof te cdhrnoiucg al htnod te efp in uib ti l o is nhsedanbdytuhsiusaltliyme ta kpee ri tohd re ceanorvam ry orceonm si odn er tahbs ly t , o develop, but t ( h1e9 75 W ). o O rld th er Mseotuerocreosl , osguicchalasSOurbgraanhim za atn io ynam ( ( W 19 M 67 O ) ) , d th e e fi ci teinmciyn . gFoorfextahmep le in , i a ti a si t g io n n if ic o an f the de p p re ecnidpiin ta gtioonndGl. l an (1 tz 98a0n ) d , K an at dzW (1 i 9 lh 7i7 te ), aSnadndG fo lradnt ( z19 ( 7199 ) 8 , 5 D ), raccaunpbeetm th aenywilnotcearlesse . as Hoonwm ev aeyr have few, itfdarnyyp , eriod during consulted for a thorough discussion of the difficulties into the growing seaso , n , ifth th eisim de pfaicctisenm cy im cpoancttisnufeosr in dDer fi onu in gghtdrhoausghbte . en grouped by type as follows: w qu iinctkelrysseianscoenlroew su l p ts r ec in ip itation during th ay magnify meteorological, hydrological, agricultural, and socio­ rates, leading to deficien lo twsosiol il mmoo is itsutruereerfeac ll haarngdeeex co pl nao in msic th e ( W re illahtiitoensahnidpbGeltawnetezn1 th 9e8s5e ) . vaF ri ioguusret yp 1 e .4 s pla M nti entg. at spring of drought and the duration of the event. Droughts express eeodro so lo le gliycaolnt ( hoer ba csliismo at fotlhoegidceagl) r ee droofudgrh yn t es iss." In Droughts, 40. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-28.

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"tboeo tw leoenngtfhorresah ll olddateevs en otfs th a e re s e to e o ve nsthsorttoabnedeoqtuhaelr ly s c (N on ota in hueefd fe c th t) r o (F uigghuo re ut2 . t2h , e to r p em ). Precipita likely. This indicates a tendenc ainder of titohned1 ef 9i7 ci 0tssf0e . r3e7nt ( 5clp im er atcee ’ n . Atcvoanlfuiedeonfc ( eDv si a g lu nyeifitcoanp tl eyrisom ds a l of ‘dif­ and 1980s and well into the 1990s (Joseph effect), implies tha for n = 40 ilser0t . h3a0n ) p (F ro ig v u id re in g 2 .2 a , ‘n beow tt om cli ) m . a F te u ’ rt fhoerrtdhies cu wse si s o te nrnofSathheelu sp su ac al eldyfro ef rlteac ll the tdsa te dat hor s t -t eosboefe th qu e events are too regularly Sherman statistic is given in Folland and." In Droughts, 54–55. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-38.

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"eppeirsocdeenst . oTfhtehequm as oir -e glm ob aarlkesd ca lEeN se SaO warm ture (SST) patterns associated wistuhr fa E ce Ntaenmdpceorlad ­ R bution of rainfall as a functio SO that sta ogpees le w of skEiNaSnOdcHaanlpoefr te tn1b9e9no5i ) d . efBEeNcS au Ose st tah te e ( eea .g., influence these rainfall patterns appear consistently in more before typical ENSO-ntified a season r o ly rfmoarnryecreencten de tcsa tu d d es ie , s P -ar kee .g r ., anHdsF iu o n ll ganadnd19N9e1wseilnlc1e9t8h3ereepc is oogdneith io ansiomfp th oer ta e n ar tlyprsetdarg el easteodfdarodu ev gehltospcionmgm EN en ScOe, late Idne in nt eitfe ic eanttihonc entury. However, one of th ic e t ive m value. precipitation relatio onfs hip tshepsreo vid ceo ain limitations sntsh is etecnlte are E st NiSnO di -­ E ac NcS or O d -in b g as teod th s e ea h so is ntaolr ic parlerdeicco ti rodn , EsN ch SeOmeissaicst iv tehaot, fce ation that seasonal meteorological drought in quite its warm or cold phases only about half the tim ienux se te fnuslisvkei ll a r ( e i. aes , ionftthheehg is lo to bre ic m al aryecboerdp , reEdN ic S ta O b -l reelw at i e th d S co in ld ce 1e9p0 is 0 o , dteh er yeeahrasv , e b ac eceonrtdhiinrg ty w to a rm th aendSnoiunteh te e e rn n . idtnryth con he aepspedroa it prie on r a ia s s ). occu te Fsiegaursroeat2 leas ns, .3 whsth7o5wsp ere p e th rocse recip entre of the time Osc itatio gi nondse , fiacn it dsJSoonue il s l at ( i1o9n87 In ) dex-based criterion of Ropelewski and are strongly associated with the warm or cold phase equa th to errinalPOas . c The cif il ilca tio clos se n a su Iendreex la tio (S n O sh I i ) pbaentdw ee cne nt trhaelo tu freEsNiSnOth -e i t . reo ., piw ca alrm ea sotrPcaoclid fi c s . eaAlstuhro face tempera­ d rface temperature anomaly may not occur consistently with every wuagrhmdorroucgoh ld tFu ig r u in durin re ggm2.4o all . s t su Ioffptr he twentieth century is illustrated in ENSO episode as appropriate, these regions do have a dr ch E ec N ip SiO ta ti eopn is owdeerse , sbku il tfun ll oytportehdeircw ta ibslee , tch le aanr -l n y or i m de anltsie fi aesdo na ilncco re nadsie ti d o ns p . r T ob haebliiln it k y wi o th fEdN ri SeOr-r th es eouotuigrm ht p ce e s . H re odw ic etv io enw managed r, ecvroouplsdm on ulsytbbeeppolsasnitbeldeaabnoduwtahtaelrfcba il n it ybedifso tr rim bu al tiisoend by ca ery year. s condi ltciuolnaatl in ognptrheecisptiattaet io onfEpN ro SbOa . ­ m ho awneyvedrr , ouEgNhSt-Op ro is nenortegtihoensonAlsy is disc . The farce to la r u ssed tiv in el f y lu ebnec lo in w g , T hi h st uosripcrae ll c y ip o it bas ti eornvepdr edic recent shif ttison in sctahnebperobb as aebd il iptuyredliysto ri n ­ g at a m in ossipnhu er nedesryssttaenmditnhg ro oufgch li m EN ate S O as satucdoiueps le h d as olceedan to -." In Droughts, 57–58. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-40.

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"tcoourpulnedexopceenasn iv -a etm en ossepmhbelrees . mIofdseol , s w to ecpo re u d ld ic tuslea rg th e e -l doiscst . i on Tsh , ebasskeid ll in seasonal rainfall and f scale indices such as the SOI, then use statistical generated the v o al nuethferoEmlN us iinnog -S ta ocu ti tchaelrnmaOnsrcoisltl at p io rne , ­ v re alra ia ti bolne ships between these forec agement. fic locat siowne . nAele te drn to at p iv reeldyi , ctw , esuccohuaasstraii ndices and the This study demonstrated that the skill obtainable in models to ld us nefatlhleatcaosuppelceid ­ A gr uosu tr nad li s a , th weaisrussueffiinc ie c n ro tptmo an ju asg ti efmy, enot. n Pr eecsounmoam bl iycp en re s d em ic b te lderpurnesdiocftasneaas tm ur o fa scpehetreimc peratures, then use these forecasts could also be useful in drought-dicti sea surface temperature msotdoelpfro ep rc aerdew pr it e h ­ mmiannaatg io enmeonftadpep ci rsoiporniam te aksitnogc , kifnogrirnas te ta sncoen in padse to te ra r l ­ tChoenbsoi ns edse of trsatbrlera ate tihno fa gy ulglhatnadndotthee st rinvga riables of interest. properties (McKeon et al. 1990). prediction. for using models iisnnseeead so endaltoc li s m el aetcet." In Droughts, 78. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-55.

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"JDaenvee ir loop ( mBe ra nzt (UNCED), which was held in Rio de and 4.2d). Such complex spatial rain into the twe il n ) ty in -f iJrusntec1 en 99 tu 5 r . yUaN re CEsD um a m ct a io ri n se pdl an in s a se ls cot io cnomhm ig ohn li gdhu ts r in th g e an so ocm io a e lo cuosnorm ain ffaa ll llpyaeta te rs r . nsTahriestUoNaCsE ‘ D A ’ gsepnudba lic 2a1t \ io n T , h w re hei ch coinsvceonm tio mnosnlryel referred are often associat ic disasters that environmental degradation that were negotia at teeddb to y climatology of the eddrow ug it hhtsd is ropurg es hetns te idnfK irs etn . ya. The U Co NnCvE en D ti on in colnudCel im th a e te UCn ha it negdeN (U a N tio FnCsC Framework N (U a N tio CnCsD) C." In Droughts, 85. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-61.

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"Oscillation) in the early." In Droughts, 74. Routledge, 2016. http://dx.doi.org/10.4324/9781315830896-51.

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Conference papers on the topic "Droughts"

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Chilikova-Lubomirova, Mila. "EXAMINATION OF URBAN AREAS DROUGHT VULNERABILITY. A TETEVEN TOWN CASE STUDY." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s20.022.

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Climate and weather play significant role in the urban areas function. They impact on the social and economy life, on the environment and infrastructure, on the biodiversity. That`s why the occurrence of extreme or untypical events is a challenge. Droughts are part of these processes. They are prolonged events that can lead to serious harmful impacts. For this purpose of importance is the becoming of reliable knowledge about such behaviour that can serve as a base for the selection of appropriate prevention and mitigation measures. This is possible by the implementation of recent scientific studies in the area that refer best to local specifics. In help of professionals and decision makers in the area this paper focuses on the droughts phenomena in urban areas. It observes the problem as a part of the climateenvironmental nexus. In this context the droughts vulnerability is examined in an integrated way, considering the main aspects and scientific approaches for droughts diagnostics. To illustrate the process in the material are summarized the results of a droughts study for one Bulgarian town � Teteven, situated in the northern slopes of the central Balkan in the Beli Vit river valley. For this reason it is implemented an integrated set of drought indicators that can ensure in parallel the detecting of meteorological and hydrological droughts and to serve for droughts vulnerability evaluation.
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Zolotokrylin, Aleksandr, Tatyana Titkova, and Elena Cherenkova. "DRYNESS DYNAMICS OF THE SOUTH OF EUROPEAN RUSSIA IN THE SPRING - SUMMER PERIOD." In Land Degradation and Desertification: Problems of Sustainable Land Management and Adaptation. LLC MAKS Press, 2020. http://dx.doi.org/10.29003/m1697.978-5-317-06490-7/148-152.

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Changes in the characteristics of spring-summer droughts in the south of European Russia (twelve regions) in the period 1901-2018 were studied using the Standardized Precipitation Index (SPI) and analyzed in the periods of increasing/decreasing humidifying estimated by the Aridity Index (AI). In each studied region, the trends of aridization for centrury and more are not found. In the meantime, long-term interdecadal periods of increasing and decreasing aridization are detected. They are characterized by significant variation of frequency and intensity of spring-summer droughts. Decreasing aridization in the early 20th century over most of the south of European Russia has been replaced by aridization increase in 1930s. The period of increasing humidifying of the whole investigated area from 1960s to the end of 20th century changed to the period of increasing aridization. During dry periods, frequency of drought increases in 1.5 times, while drought intensity growth is insignificant. In actual dry period, beginning with the early 21th century, spring-summer droughts have emerged earlier in eastern part of South of European Russia; however, in western part drought are observed more often.
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Evgeniev, Radoslav, Krastina Malcheva, Tania Marinova, Hristo Chervenkov, and Lilia Bocheva. "ASSESSMENT OF DROUGHT IN BULGARIA IN RECENT YEARS THROUGH THE STANDARDIZED PRECIPITATION INDEX." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/4.1/s19.31.

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Drought is a complex weather and climate-related phenomenon with significant ecological and socioeconomic consequences. In light of the increasing severity and frequency of droughts in Europe in recent years, this study focuses on assessing the spatiotemporal evolution of drought in Bulgaria during the period 2014-2022. To achieve this, the Standardized Precipitation Index (SPI) is calculated at different time scales (1, 3, and 6 months) for both the country's territory and individual municipalities using software recommended by the World Meteorological Organization. The spatiotemporal analysis is performed in the QGIS environment, utilizing the Ordinary Kriging method for spatial interpolation and the Zonal Statistics tool to calculate selected statistical features at the municipality level. Additionally, area-averaged values are extracted from all raster layers, forming time series spanning the period 2014-2022, which are used for further statistical analysis. The study reveals several drought events, with the most significant occurrence in 2019-2020, affecting 60-80% of the country's territory during certain months. However, the considered period is characterized by normal and wet conditions. The results also show that several municipalities in the western and southeastern regions of the country are particularly vulnerable to severe and extreme droughts. Overall, the study emphasizes the importance of integrating different spatial and time scales in drought monitoring and analysis.
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Tazhibayeva, Vitaly. "DROUGHTS IN KAZAKHSTAN." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/41/s19.052.

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Burke, Jr., Thomas T., and A. Ramachandra Rao. "Regionalization of Droughts." In Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40517(2000)9.

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Vizina, Adam, Petr Pavlík, Irina Georgievová, Martin Hanel, Martina Peláková, and Eva Melišová. "Warning information and local threshold limits in the HAMR system." In První konference PERUN. Český hydrometeorologický ústav, 2023. http://dx.doi.org/10.59984/978-80-7653-063-8.29.

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Droughts and floods are extreme hydrological events with increasing impacts due to climate change. The PERUN project focuses on drought assessment in the Czech Republic and the innovation of the warning system by ČHMÚ. The Water Act amendment introduces the obligation to inform about drought and forecasting services. Tools are being developed for predicting the state of water resources and creating plans to address drought and water scarcity. The competent body is the Drought Commission at the regional or national level. Warning information is available on the HAMR portal along with the local threshold limits (MSL) of water sources.
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TAPARAUSKIENĖ, Laima, and Veronika LUKŠEVIČIŪTĖ. "DROUGHT OCCURRENCE UNDER LITHUANIAN CLIMATIC CONDITIONS." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.059.

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This study provides the analysis of drought conditions of vegetation period in 1982-2014 year in two Lithuanian regions: Kaunas and Telšiai. To identify drought conditions the Standardized Precipitation Index (SPI) was applied. SPI was calculated using the long-term precipitation record of 1982–2014 with in-situ meteorological data. Calculation step of SPI was taken 1 month considering only vegetation period (May, June, July, August, September). The purpose of investigation was to evaluate the humidity/aridity of vegetation period and find out the probability of droughts occurrence under Lithuanian climatic conditions. It was found out that according SPI results droughts occurred in 14.5 % of all months in Kaunas region and in 15.8 % in Telšiai region. Wet periods in Kaunas region occurred in 15.8 %, and in Telšiai region occurrence of wet periods was – 18.8 % from all evaluated months. According SPI evaluation near normal were 69.7 % of total months during period of investigation in Kaunas and respectively – 65.5 % in Telšiai. The probability for extremely dry period under Lithuania climatic conditions are pretty low – 3.0 % in middle Lithuania and 2.4 % in western part of Lithuania.
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Elizbarashvili, Mariam. "DROUGHTS IN EASTERN GEORGIA." In SGEM2011 11th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2011/s17.115.

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Rodríguez-Iturbe, Ignacio. "Droughts and climate change." In The world at risk: Natural hazards and climate change. AIP, 1992. http://dx.doi.org/10.1063/1.43895.

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Lohani, Vinod K., and G. V. Loganathan. "Dynamic Modeling of Droughts." In 29th Annual Water Resources Planning and Management Conference. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/40430(1999)183.

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Reports on the topic "Droughts"

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Ortiz, Raphaëlle, Anamaría Núñez, Corinne Cathala, Ana R. Rios, and Mauro Nalesso. Water in the Time of Drought II: Lessons from Droughts around the World. Edited by Raul Muñoz, Alfred Grunwaldt, and Claudia Calderón. Inter-American Development Bank, July 2021. http://dx.doi.org/10.18235/0003425.

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This technical note is an update to the previous "Water in the Time of Drought: Lessons from Five Droughts Around the World", published in 2018. It explores drought situations and policies in Spain (including the Canary Islands), Chile, Mexico, the dry corridor between Honduras, Guatemala, and El Salvador, Brazil, and South Africa. Each of these countries has recently dealt with droughts and/or developed long-term solutions to manage them. HydroBID, a tool developed by the IDB, will be presented through relevant case studies. After defining drought experiences and institutional frameworks in each country, the brief will explore the successes and challenges of national drought and water management policies. Best practices and lessons learned will be extracted from each case study to help policymakers better prepare for droughts.
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Cathala, Corinne, Anamaría Núñez, and Ana R. Rios. Water in the Time of Drought: Lessons from Five Droughts around the World. Inter-American Development Bank, August 2018. http://dx.doi.org/10.18235/0001279.

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Núñez, Anamaría, Corinne Cathala, and Ana R. Rios. Water in the Time of Drought: Lessons from Five Droughts around the World. Inter-American Development Bank, August 2018. http://dx.doi.org/10.18235/0008515.

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This policy brief examines these crises, explores successes and pitfalls in the response mechanisms, and extracts valuable lessons to assist decision makers in dealing with droughts, providing practical guidance in terms of urban planning and management. It will do so through a three-pronged approach: First, it describes the situation each utility and region faced while tackling the drought, as well as the measures they implemented to respond to that dire situation. Second, it will present some recommendations and lessons learned to build climate resilience in the future. Lastly, it will show how droughts may often be catalysts for new strategic measures and innovation that address water stress over the long term.
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Costa, Flavia R. C., José Antonio Marengo, Ana Luisa M. Albernaz, Ana Paula Cunha, Nicolás Cuvi, Jhan-Carlo Espinoza, Joice Ferreira, et al. Policy Brief: Droughts in the Amazon. Sustainable Development Solutions Network (SDSN), July 2024. http://dx.doi.org/10.55161/lvyb6857.

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Basani, Marcello, Raúl Muñoz Castillo, Giulia Carscasci, and Jihoon Lee. Piloting Drought Management Participatory Modeling-Based Approaches in Chile. Inter-American Development Bank, January 2024. http://dx.doi.org/10.18235/0005500.

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Chile's unique geography and climatic zones, including the arid Atacama desert in the north and the cold, humid Patagonian zone in the south, represents a challenges for water resource management. Droughts, and particularly mega-droughts, have become more frequent and intense, affecting not only the north but also central regions like the Maipo basin basin, located in the Metropolitan Region. To address these issues, this project aims to develop a Drought Management Plan (DMP) for the Maipo basin, and to support analysis of drought conditions, including characterization of spatial coverage, intensity, and duration, a Drought Management module has been implemented in WaterALLOC, combining the Hydro-BID and MODSIM modeling systems. This case study focuses on the Maipo river basin in Chile, using the Drought Management module in WaterALLOC to simulate response stages for mitigating drought impacts. The study highlights the importance of integrated tools and modeling systems for enhanced water resources planning and decision-making in drought-prone regions. Finally, a capacity training program aimed at strengthening the technical capacities of local stakeholders in water resources management was implemented.
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Dorosh, Paul A., Jenny Smart, Bart Minten, and David Stifel. Droughts, cereal prices, and price stabilization options. Washington, DC: International Food Policy Research Institute, 2020. http://dx.doi.org/10.2499/9780896296916_09.

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7

Ahmadi, Behzad. On the Drought Recovery and Resiliency: How Terrestrial and Riverine Ecosystems Recover from Agricultural and Hydrological Droughts. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6710.

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8

Salimun, Ester. Southeast Asia braces for more droughts and haze. Edited by S. Vicknesan. Monash University, July 2023. http://dx.doi.org/10.54377/28ac-037a.

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Landon-Lane, John, Hugh Rockoff, and Richard Steckel. Droughts, Floods and Financial Distress in the United States. Cambridge, MA: National Bureau of Economic Research, December 2009. http://dx.doi.org/10.3386/w15596.

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Sengupta, Sohini. How droughts can leave people with nowhere to go. Edited by Bharat Bhushan and Suzannah Lyons. Monash University, June 2023. http://dx.doi.org/10.54377/375a-a279.

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