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Artículos de revistas sobre el tema "Standardized Precipitation and Evapotranspiration index (SPEI)"

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Publicado: 4 de junio de 2021

Última modificación: 1 de febrero de 2022

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1

Ariyanto, Dwi Priyo, Abdul Aziz, Komariah Komariah, Sumani Sumani, and Magarsa Abara. "Comparing the accuracy of estimating soil moisture using the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI)." SAINS TANAH - Journal of Soil Science and Agroclimatology 17, no. 1 (2020): 23. http://dx.doi.org/10.20961/stjssa.v17i1.41396.

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<span>The Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI) are used to monitor and identify different types of drought, including meteorological, hydrological, and agricultural droughts. This study evaluates the accuracy of estimating soil moisture levels using the two indexes. The analysis correlated the SPI and the SPEI over three years (November 2016–October 2019) using <em>Rstudio</em>, with average monthly soil moisture taken using a Soil Moisture Sensor; 3-, 6- and 12-months SPI and SPEI showed a positive correlat

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2

Vicente-Serrano, Sergio M., Santiago Beguería, and Juan I. López-Moreno. "A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index." Journal of Climate 23, no. 7 (2010): 1696–718. http://dx.doi.org/10.1175/2009jcli2909.1.

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Abstract The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining multiscalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed and involves a climatic water balance, the accumulation of deficit/surplus at different time scales, and adjustment to a log-logistic probability distribution. Mathematically, the SPEI is similar to the standardized prec

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3

Zhao, Qingzhi, Xiongwei Ma, Wanqiang Yao, Yang Liu, and Yibin Yao. "A Drought Monitoring Method Based on Precipitable Water Vapor and Precipitation." Journal of Climate 33, no. 24 (2020): 10727–41. http://dx.doi.org/10.1175/jcli-d-19-0971.1.

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AbstractPrecipitable water vapor (PWV) with high precision and high temporal resolution can be obtained based on the global navigation and satellite positioning system (GNSS) technique, which is important for GNSS in disaster prevention and mitigation. However, related studies on drought monitoring using PWV have rarely been performed before, which becomes the focus of this paper. This paper proposes a novel drought monitoring method using GNSS-derived PWV and precipitation, and a multi-time-scale standardized precipitation conversion index (SPCI) is established. This index is different from t

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4

Saengrattanayon, Chanattha, Nuttapong Panthong, Parwapath Phunthirawuthi, and Sukrit Kirtsaeng. "Analysis of Standardized Precipitation Evapotranspiration Index over Chiangrai and Phayao." Applied Mechanics and Materials 891 (May 2019): 117–26. http://dx.doi.org/10.4028/www.scientific.net/amm.891.117.

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Drought indices analysis plays a vital role in flood and drought monitoring and early warning, which is a main responsibility of Thai Meteorological Department (TMD), especially the basins that are limited in use o¬¬f water resources such as Kok and Ing river basins. This study aims to analyze drought situations utilized Standardized Precipitation Evapotranspiration Index (SPEI) at Chiangrai and Phayao provinces (located Kok and Ing basins). Both observed data, precipitation and temperature, are used for calculation (data in between 1951-2018 for Chiangrai and 1981-2018 for Phayao). The result

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5

S L Cheng F Y Zhang Y Q et al, Liu. "Standardized Precipitation Evapotranspiration Index (SPEI) Dataset of Yunnan Province, China." Journal of Global Change Data & Discovery 1, no. 4 (2017): 447–51. http://dx.doi.org/10.3974/geodp.2017.04.11.

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6

Jamro, Shoaib, Ghulam Hussain Dars, Kamran Ansari, and Nir Y. Krakauer. "Spatio-Temporal Variability of Drought in Pakistan Using Standardized Precipitation Evapotranspiration Index." Applied Sciences 9, no. 21 (2019): 4588. http://dx.doi.org/10.3390/app9214588.

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Pakistan is among the top ten countries adversely affected by climate change. More specifically, there is concern that climate change may cause longer and severer spells of droughts. To quantify the change in the characteristics of droughts in Pakistan over the years, we have evaluated spatio-temporal trends of droughts in Pakistan over the period 1902–2015 using Standardized Precipitation Evapotranspiration Index (SPEI). Additionally, the Spatial “K” luster Analysis using Tree Edge Removal (SKATER) method was employed to regionalize droughts into five contiguous zones. The run theory was then

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7

Ahmadebrahimpour, Edris, Babak Aminnejad, and Keivan Khalili. "Assessing future drought conditions under a changing climate: a case study of the Lake Urmia basin in Iran." Water Supply 19, no. 6 (2019): 1851–61. http://dx.doi.org/10.2166/ws.2019.062.

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Abstract This study was conducted to assess the impacts of climate change on drought over the Lake Urmia basin, Iran. Drought events for 2011–2040, 2041–2070, and 2071–2100 were analyzed based on the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI) and were compared with the adopted baseline period (1976–2005). The SPI and SPEI were calculated using the precipitation and temperatures obtained from the second-generation Canadian Earth System Model (CanESM2) under Representative Concentration Pathway (RCP) 2.6 and RCP 8.5 as optimistic and

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8

Katipoğlu, Okan Mert, Reşat Acar, and Selim Şengül. "Comparison of meteorological indices for drought monitoring and evaluating: a case study from Euphrates basin, Turkey." Journal of Water and Climate Change 11, S1 (2020): 29–43. http://dx.doi.org/10.2166/wcc.2020.171.

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Abstract Drought incidents occur due to the fact that precipitation values are below average for many years. Drought causes serious effects in many sectors, such as agriculture, economy, health, and energy. Therefore, the determination of drought and water scarcity, monitoring, management, and planning of drought and taking early measures are important issues. In order to solve these issues, the advantages and disadvantages of five different meteorological drought indices were compared, and the most effective drought index was determined for monitoring drought. Accordingly, in the monthly, 3-m

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9

Gocic, Milan, Danilo Misic, Slavisa Trajkovic, and Mladen Milanovic. "Using GIS tool for presenting spatial distribution of drought." Facta universitatis - series: Architecture and Civil Engineering 18, no. 1 (2020): 77–84. http://dx.doi.org/10.2298/fuace200409006g.

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By using GIS tools, it is possible to improve the preview of hydrological processes such as evapotranspiration, precipitation, flood and drought. In order to quantify drought, different type of drought indicators have been developed such as Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), Standardized Precipitation Evapotranspiration Index (SPEI) or Water Surplus Variability Index (WSVI). In this paper the precipitation-based SPI indicator was applied to the monthly precipitation data from Serbia during the period 1948-2012. The data were processed in the QuantumGIS

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10

Serrano-Barrios, L., S. M. Vicente-Serrano, H. Flores-Magdaleno, L. Tijerina-Chávez, and D. Vázquez-Soto. "Variabilidad espacio-temporal de las sequías en la cuenca Pacífico Norte de México (1961-2010)." Cuadernos de Investigación Geográfica 42, no. 1 (2016): 185. http://dx.doi.org/10.18172/cig.2857.

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This article analyses the spatio-temporal variability of droughts in the North Pacific Basin of México between 1961 and 2010, using two drought indices: the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI). We used data from 48 weather stations with available data of precipitation and monthly minimum and maximum temperature. In 22 of the weather stations, time series of Piché evaporation were also available. The reference evapotranspiration, necessary to obtain the SPEI, was calculated by means of the Hargreaves equation. Results show th

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11

Liu, Weilin, and Lina Liu. "Analysis of Dry/Wet Variations in the Poyang Lake Basin Using Standardized Precipitation Evapotranspiration Index Based on Two Potential Evapotranspiration Algorithms." Water 11, no. 7 (2019): 1380. http://dx.doi.org/10.3390/w11071380.

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Global warming has resulted in unevenly distributed changes in precipitation and evapotranspiration, which has some influence on dry/wet conditions, thus exerting a tremendous impact on national life and the social economy, especially agricultural production. In order to characterize the dry/wet variations in the Poyang Lake basin during 1958–2013, based on the potential evapotranspiration (PET) estimated by the Thornthwaite (TH) and Penman–Monteith (PM) formulas, two types of Standardized Precipitation Evapotranspiration Index (SPEI), namely SPEI_th and SPEI_pm, were calculated in this study.

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12

Fung, Kit Fai, Yuk Feng Huang, and Chai Hoon Koo. "Improvement of SVR-Based Drought Forecasting Models using Wavelet Pre-Processing Technique." E3S Web of Conferences 65 (2018): 07007. http://dx.doi.org/10.1051/e3sconf/20186507007.

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Drought is a damaging natural hazard due to the lack of precipitation from the expected amount for a period of time. Mitigations are required to reduced its impact. Due to the difficulty in determining the onset and offset of droughts, accurate drought forecasting approaches are required for drought risk management. Given the growing use of machine learning in the field, Wavelet-Boosting Support Vector Regression (W-BS-SVR) was proposed for drought forecasting at Langat River Basin, Malaysia. Monthly rainfall, mean temperature and evapotranspiration for years 1976 - 2015 were used to compute S

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13

Li, Lingcheng, Dunxian She, Hui Zheng, Peirong Lin, and Zong-Liang Yang. "Elucidating Diverse Drought Characteristics from Two Meteorological Drought Indices (SPI and SPEI) in China." Journal of Hydrometeorology 21, no. 7 (2020): 1513–30. http://dx.doi.org/10.1175/jhm-d-19-0290.1.

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AbstractThis study elucidates drought characteristics in China during 1980–2015 using two commonly used meteorological drought indices: standardized precipitation index (SPI) and standardized precipitation–evapotranspiration index (SPEI). The results show that SPEI characterizes an overall increase in drought severity, area, and frequency during 1998–2015 compared with those during 1980–97, mainly due to the increasing potential evapotranspiration. By contrast, SPI does not reveal this phenomenon since precipitation does not exhibit a significant change overall. We further identify individual

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14

Li, Jun, Zhaoli Wang, Xushu Wu, Chong-Yu Xu, Shenglian Guo, and Xiaohong Chen. "Toward Monitoring Short-Term Droughts Using a Novel Daily Scale, Standardized Antecedent Precipitation Evapotranspiration Index." Journal of Hydrometeorology 21, no. 5 (2020): 891–908. http://dx.doi.org/10.1175/jhm-d-19-0298.1.

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AbstractRecent events across many regions around the world have shown that short-term droughts (i.e., daily or weekly) with sudden occurrence can lead to huge losses to a wide array of environmental and societal sectors. However, the most commonly used drought indices can only identify drought at the monthly scale. Here, we introduced a daily scale drought index, that is, the standardized antecedent precipitation evapotranspiration index (SAPEI) that utilizes precipitation and potential evapotranspiration and also considers the effect of early water balance on dry/wet conditions on the current

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15

Tirivarombo, S., D. Osupile, and P. Eliasson. "Drought monitoring and analysis: Standardised Precipitation Evapotranspiration Index (SPEI) and Standardised Precipitation Index (SPI)." Physics and Chemistry of the Earth, Parts A/B/C 106 (August 2018): 1–10. http://dx.doi.org/10.1016/j.pce.2018.07.001.

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16

Beguería, Santiago, Sergio M. Vicente-Serrano, Fergus Reig, and Borja Latorre. "Standardized precipitation evapotranspiration index (SPEI) revisited: parameter fitting, evapotranspiration models, tools, datasets and drought monitoring." International Journal of Climatology 34, no. 10 (2013): 3001–23. http://dx.doi.org/10.1002/joc.3887.

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17

Coll, J. R., E. Aguilar, M. Prohom, and J. Sigro. "Long-term drought variability and trends in Barcelona (1787-2014)." Cuadernos de Investigación Geográfica 42, no. 1 (2016): 29. http://dx.doi.org/10.18172/cig.2927.

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Long-term drought variability and trends were assessed in Barcelona at annual and seasonal scale for the period 1787-2014 and sub-periods 1851-2014, 1901-2014 and 1951-2014 to identify changes in drought patterns across time. High quality and adjusted monthly temperature and precipitation series were required for this purpose. The Standardized Precipitation Index (SPI), based on precipitation, and the Standardized Precipitation Evapotranspiration Index (SPEI), based on the difference between precipitation and reference evapotranspiration (ET0), were calculated to describe temporal drought fluc

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18

Vicente-Serrano, Sergio M., Diego G. Miralles, Fernando Domínguez-Castro, et al. "Global Assessment of the Standardized Evapotranspiration Deficit Index (SEDI) for Drought Analysis and Monitoring." Journal of Climate 31, no. 14 (2018): 5371–93. http://dx.doi.org/10.1175/jcli-d-17-0775.1.

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This article developed and implemented a new methodology for calculating the standardized evapotranspiration deficit index (SEDI) globally based on the log-logistic distribution to fit the evaporation deficit (ED), the difference between actual evapotranspiration (ETa) and atmospheric evaporative demand (AED). Our findings demonstrate that, regardless of the AED dataset used, a log-logistic distribution most optimally fitted the ED time series. As such, in many regions across the terrestrial globe, the SEDI is insensitive to the AED method used for calculation, with the exception of winter mon

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19

da Rocha Júnior, Rodrigo Lins, Fabrício Daniel dos Santos Silva, Rafaela Lisboa Costa, et al. "Analysis of the Space–Temporal Trends of Wet Conditions in the Different Rainy Seasons of Brazilian Northeast by Quantile Regression and Bootstrap Test." Geosciences 9, no. 11 (2019): 457. http://dx.doi.org/10.3390/geosciences9110457.

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Drought causes serious social and environmental problems that have great impact on the lives of thousands of people all around the world. The purpose of this research was to investigate the trends in humid conditions in the northeast of Brazil (NEB) in the highest climatic precipitation quarters, November–December–January (NDJ), February–March–April (FMA), and May–June–July (MJJ), through the standardized precipitation and evapotranspiration index (SPEI), considering an alternative statistical approach. Precipitation and potential evapotranspiration (PET) time series for the calculation of the

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20

Ma, Xiongwei, Yibin Yao, and Qingzhi Zhao. "Regional GNSS-Derived SPCI: Verification and Improvement in Yunnan, China." Remote Sensing 13, no. 10 (2021): 1918. http://dx.doi.org/10.3390/rs13101918.

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From the aspect of global drought monitoring, improving the regional drought monitoring method is becoming increasingly important for the sustainable development of regional agriculture and the economy. The standardized precipitation conversion index (SPCI) calculated by the Global Navigation Satellite System (GNSS) observation is a new means for drought monitoring that has the advantages of simple calculation and real-time monitoring. However, only SPCI with a 12-month scale has been verified on a global scale, while its capability and applicability for monitoring drought at a short time scal

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21

Oikonomou, Panagiotis D., Christos A. Karavitis, and Elpida Kolokytha. "Multi-Index Drought Assessment in Europe." Proceedings 7, no. 1 (2018): 20. http://dx.doi.org/10.3390/ecws-3-05822.

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Any attempt for the application of integrated drought management requires identifying and characterizing the event, per se. The questions of scale, boundary, and of geographic areal extent are of central concern for any efforts of drought assessment, impact identification, and thus, of drought mitigation implementation mechanisms. The use of drought indices, such as Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), has often led to pragmatic realization of drought duration, magnitude, and spatial extension. The current effort presents th

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22

Zhang, Rui, Taotao Chen, and Daocai Chi. "Global Sensitivity Analysis of the Standardized Precipitation Evapotranspiration Index at Different Time Scales in Jilin Province, China." Sustainability 12, no. 5 (2020): 1713. http://dx.doi.org/10.3390/su12051713.

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The Standardized Precipitation Evapotranspiration Index (SPEI) has been widely applied, due to its multi-scalar features and the ability to identify different drought types. However, its sensitivity to climatic variables still remains unclear, especially at different time scales. Therefore, this study investigates the sensitivity of SPEI to average temperature (Tmean), diurnal temperature ranges (Tdelta), relative humidity (RH), solar radiation (Rs), wind speed (U2), geothermal flux (G), and precipitation (P) from 1957 to 2017 using the extended Fourier Amplitude Sensitivity Test at different

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23

Ionita, Monica, and Viorica Nagavciuc. "Changes in drought features at the European level over the last 120 years." Natural Hazards and Earth System Sciences 21, no. 5 (2021): 1685–701. http://dx.doi.org/10.5194/nhess-21-1685-2021.

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Abstract. In this study we analyze drought features at the European level over the period 1901–2019 using three drought indices: the standardized precipitation index (SPI), the standardized precipitation evapotranspiration index (SPEI), and the self-calibrated Palmer drought severity index (scPDSI). The results based on the SPEI and scPDSI point to the fact that Central Europe (CEU) and the Mediterranean region (MED) are becoming dryer due to an increase in the potential evapotranspiration and mean air temperature, while North Europe (NEU) is becoming wetter. By contrast, the SPI drought does

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24

Paulo, A. A., R. D. Rosa, and L. S. Pereira. "Climate trends and behaviour of drought indices based on precipitation and evapotranspiration in Portugal." Natural Hazards and Earth System Sciences 12, no. 5 (2012): 1481–91. http://dx.doi.org/10.5194/nhess-12-1481-2012.

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Abstract. Distinction between drought and aridity is crucial to understand water scarcity processes. Drought indices are used for drought identification and drought severity characterisation. The Standardised Precipitation Index (SPI) and the Palmer Drought Severity Index (PDSI) are the most known drought indices. In this study, they are compared with the modified PDSI for Mediterranean conditions (MedPDSI) and the Standardised Precipitation Evapotranspiration Index (SPEI). MedPDSI results from the soil water balance of an olive crop, thus real evapotranspiration is considered, while SPEI uses

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Bezdan, Jovana, Atila Bezdan, Boško Blagojević, et al. "SPEI-Based Approach to Agricultural Drought Monitoring in Vojvodina Region." Water 11, no. 7 (2019): 1481. http://dx.doi.org/10.3390/w11071481.

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This paper presents the standardized precipitation evapotranspiration index (SPEI)-based approach to agricultural drought monitoring (ADM-SPEI approach) combining well-known methods, expert’ critical opinions, and local agro-climatic specificities. The proposed approach has been described in detail in three phases. This allows its application in any region and modification according to different agro-climatic conditions. The application of the ADM-SPEI approach has resulted in obtaining a modified SPEI for different crops (agricultural drought SPEI (AD-SPEIcrop)) in the Vojvodina region. In th

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26

Nagy, Patrik, Martina Zeleňáková, Slávka Galas, Helena Hlavatá, and Dorota Simonová. "Identification of dry and wet 6 months’ period in eastern Slovakia using indices." MATEC Web of Conferences 310 (2020): 00047. http://dx.doi.org/10.1051/matecconf/202031000047.

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In the paper we evaluated dry and wet 6 months’ periods, which reflect changes in water resources of the country. We assessed Standardized Precipitation Index (SPI), Standardized Evapotranspiration Index (SPEI), Streamflow Drought Index (SDI), Reconnaissance Drought Index (RDI). The time period was 1960 - 2015 and the study area includes eastern Slovakia – selected water and climatic stations. The results indicate dry periods and wet periods. The results of work are presented in the table for separate evaluated indices.

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Vicente-Serrano, Sergio M., Santiago Beguería, Jorge Lorenzo-Lacruz, et al. "Performance of Drought Indices for Ecological, Agricultural, and Hydrological Applications." Earth Interactions 16, no. 10 (2012): 1–27. http://dx.doi.org/10.1175/2012ei000434.1.

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Abstract In this study, the authors provide a global assessment of the performance of different drought indices for monitoring drought impacts on several hydrological, agricultural, and ecological response variables. For this purpose, they compare the performance of several drought indices [the standardized precipitation index (SPI); four versions of the Palmer drought severity index (PDSI); and the standardized precipitation evapotranspiration index (SPEI)] to predict changes in streamflow, soil moisture, forest growth, and crop yield. The authors found a superior capability of the SPEI and t

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McEvoy, Daniel J., Justin L. Huntington, John T. Abatzoglou, and Laura M. Edwards. "An Evaluation of Multiscalar Drought Indices in Nevada and Eastern California." Earth Interactions 16, no. 18 (2012): 1–18. http://dx.doi.org/10.1175/2012ei000447.1.

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Abstract Nevada and eastern California are home to some of the driest and warmest climates, most mountainous regions, and fastest growing metropolitan areas of the United States. Throughout Nevada and eastern California, snow-dominated watersheds provide most of the water supply for both human and environmental demands. Increasing demands on finite water supplies have resulted in the need to better monitor drought and its associated hydrologic and agricultural impacts. Two multiscalar drought indices, the standardized precipitation index (SPI) and the standardized precipitation evapotranspirat

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Tang, Han, Tong Wen, Peng Shi, Simin Qu, Lanlan Zhao, and Qiongfang Li. "Analysis of Characteristics of Hydrological and Meteorological Drought Evolution in Southwest China." Water 13, no. 13 (2021): 1846. http://dx.doi.org/10.3390/w13131846.

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Based on the data of 82 meteorological stations and six representative hydrological stations in four provinces in Southwest China (Guizhou, Sichuan, Yunnan, Chongqing), this paper uses standardized precipitation evapotranspiration index (SPEI) and standardized runoff index (SRI) to analyze the spatial and temporal evolution characteristics of drought in the study area from 1968 to 2018. Combined with the Southwest monsoon index and historical drought data, the correlation of drought and the applicability of different drought indices were verified. The results show that: (1) SPEI-12 in Southwes

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Jincy Rose, M. A., and N. R. Chithra. "Evaluation of temporal drought variation and projection in a tropical river basin of Kerala." Journal of Water and Climate Change 11, S1 (2020): 115–32. http://dx.doi.org/10.2166/wcc.2020.240.

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Abstract Temperature is an indispensable parameter of climate that triggers evapotranspiration and has vital importance in aggravating drought severity. This paper analyses the existence and persistence of drought conditions which are said to prevail in a tropical river basin which was once perennial. Past observed data and future climate projections of precipitation and temperature were used for this purpose. The assessment and projection of this study employ the Standardized Precipitation Evapotranspiration Index (SPEI) compared with that of the Standardized Precipitation Index (SPI). The re

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Páscoa, P., C. M. Gouveia, A. Russo, and R. M. Trigo. "Drought Trends in the Iberian Peninsula over the Last 112 Years." Advances in Meteorology 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/4653126.

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The Iberian Peninsula (IP) is a drought-prone area located in the Mediterranean which presents a significant tendency towards dryness during the last decades, reinforcing the need for a continuous monitoring of drought. The long-term evolution of drought in the IP is analyzed, using the Standardized Precipitation Evaporation Index (SPEI) and the Standardized Precipitation Index (SPI), for the period of 1901–2012 and for three subperiods: 1901–1937, 1938–1974, and 1975–2012. SPI and SPEI were calculated with a 12-month time scale, using data from the Climatic Research Unit (CRU) database. Trend

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Ziese, M., U. Schneider, A. Meyer-Christoffer, et al. "The GPCC Drought Index – a new, combined and gridded global drought index." Earth System Science Data 6, no. 2 (2014): 285–95. http://dx.doi.org/10.5194/essd-6-285-2014.

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Abstract. The Global Precipitation Climatology Centre Drought Index (GPCC-DI) provides estimations of water supply anomalies with respect to long-term statistics. It is a combination of the Standardized Precipitation Index with adaptations from Deutscher Wetterdienst (SPI-DWD) and the Standardized Precipitation Evapotranspiration Index (SPEI). Precipitation data were taken from the Global Precipitation Climatology Centre (GPCC) and temperature data from NOAA's Climate Prediction Center (CPC). The GPCC-DI is available with several accumulation periods of 1, 3, 6, 9, 12, 24 and 48 months for dif

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Nedealcov, M., V. Răileanu, R. Sîrbu, and R. Cojocari. "The Use Of Standardized Indicators (SPI And SPEI) In Predicting Droughts Over The Republic Of Moldova Territory." Present Environment and Sustainable Development 9, no. 2 (2015): 149–58. http://dx.doi.org/10.1515/pesd-2015-0032.

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Abstract The drought events frequent manifestation over the Republic of Moldova territory, in the context of climate change requires a scientific monitoring adjusted to international researchers. In recent years, internationally, the estimation of this phenomenon occurs through standardized indexes. The most used of these, being the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI). Since there is no a unified definition of drought, the World Meteorological Organization proposes to calculate the indexes, through developed calculation soft

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Mishra, Nischal, Puneet Srivastava, and Sarmistha Singh. "What Do Climate Change Projections Say About Future Droughts in Alabama and Georgia?" Transactions of the ASABE 60, no. 4 (2017): 1139–51. http://dx.doi.org/10.13031/trans.11854.

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Abstract. Frequent severe droughts in recent years in the humid southeast U.S. have called for pragmatic approaches to better prepare for the consequences of droughts. This article examines how climate change will influence future droughts in Alabama and Georgia. Historic and future droughts were quantified by means of the standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI), and changes in the frequency, severity, and spatial extent of droughts were examined using severity-area-frequency (SAF) curves. Precipitation and temperature data, regiona

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Rhee, Jinyoung, and Jaepil Cho. "Future Changes in Drought Characteristics: Regional Analysis for South Korea under CMIP5 Projections." Journal of Hydrometeorology 17, no. 1 (2015): 437–51. http://dx.doi.org/10.1175/jhm-d-15-0027.1.

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Abstract The future changes in drought characteristics were examined on a regional scale for South Korea, in northeastern Asia, using 17 bias-corrected projections from phase 5 of the Coupled Model Intercomparison Project (CMIP5) of representative concentration pathway (RCP) scenarios 4.5 and 8.5. The frequency of severe or extreme drought, based on the standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI), with time scales of 1, 3, and 12 months (i.e., SPI1, SPI3, SPI12, SPEI1, SPEI3, and SPEI12), was considered, as well as the average duration

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Ziese, M., U. Schneider, A. Meyer-Christoffer, et al. "GPCC Drought Index – a new, combined, and gridded global drought index." Earth System Science Data Discussions 7, no. 1 (2014): 243–70. http://dx.doi.org/10.5194/essdd-7-243-2014.

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Abstract. The Global Precipitation Climatology Centre Drought Index (GPCC-DI) provides estimations of precipitation anomalies with respect to long term statistics. It is a combination of the Standardized Precipitation Index with adaptations from Deutscher Wetterdienst (SPI-DWD) and the Standardized Precipitation Evapotranspiration Index (SPEI). Precipitation data were taken from the Global Precipitation Climatology Centre (GPCC) and temperature data from NOAA's Climate Prediction Center (CPC). The GPCC-DI is available with several averaging periods of 1, 3, 6, 9, 12, 24 and 48 months for diffe

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Mulualem, Getachew Mehabie, and Yuei-An Liou. "Application of Artificial Neural Networks in Forecasting a Standardized Precipitation Evapotranspiration Index for the Upper Blue Nile Basin." Water 12, no. 3 (2020): 643. http://dx.doi.org/10.3390/w12030643.

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The occurrence frequency of drought has intensified with the unprecedented effect of global warming. Knowledge about the spatiotemporal distributions of droughts and their trends is crucial for risk management and developing mitigation strategies. In this study, we developed seven artificial neural network (ANN) predictive models incorporating hydro-meteorological, climate, sea surface temperatures, and topographic attributes to forecast the standardized precipitation evapotranspiration index (SPEI) for seven stations in the Upper Blue Nile basin (UBN) of Ethiopia from 1986 to 2015. The main a

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Abatzoglou, John T., Renaud Barbero, Jacob W. Wolf, and Zachary A. Holden. "Tracking Interannual Streamflow Variability with Drought Indices in the U.S. Pacific Northwest." Journal of Hydrometeorology 15, no. 5 (2014): 1900–1912. http://dx.doi.org/10.1175/jhm-d-13-0167.1.

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Abstract Drought indices are often used for monitoring interannual variability in macroscale hydrology. However, the diversity of drought indices raises several issues: 1) which indices perform best and where; 2) does the incorporation of potential evapotranspiration (PET) in indices strengthen relationships, and how sensitive is the choice of PET methods to such results; 3) what additional value is added by using higher-spatial-resolution gridded climate layers; and 4) how have observed relationships changed through time. Standardized precipitation index, standardized precipitation evapotrans

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Peña-Gallardo, Marina, Sergio Martín Vicente-Serrano, Fernando Domínguez-Castro, and Santiago Beguería. "The impact of drought on the productivity of two rainfed crops in Spain." Natural Hazards and Earth System Sciences 19, no. 6 (2019): 1215–34. http://dx.doi.org/10.5194/nhess-19-1215-2019.

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Abstract. Drought events are of great importance in most Mediterranean climate regions because of the diverse and costly impacts they have in various economic sectors and on the environment. The effects of this natural hazard on rainfed crops are particularly evident. In this study the impacts of drought on two representative rainfed crops in Spain (wheat and barley) were assessed. As the agriculture sector is vulnerable to climate, it is especially important to identify the most appropriate tools for monitoring the impact of the weather on crops, and particularly the impact of drought. Drough

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Oertel, Melanie, Francisco Meza, Jorge Gironás, Christopher A. Scott, Facundo Rojas, and Nicolás Pineda-Pablos. "Drought Propagation in Semi-Arid River Basins in Latin America: Lessons from Mexico to the Southern Cone." Water 10, no. 11 (2018): 1564. http://dx.doi.org/10.3390/w10111564.

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Detecting droughts as early as possible is important in avoiding negative impacts on economy, society, and environment. To improve drought monitoring, we studied drought propagation (i.e., the temporal manifestation of a precipitation deficit on soil moisture and streamflow). We used the Standardized Precipitation Evapotranspiration Index (SPEI), Standardized Streamflow Index (SSI), and Standardized Soil Moisture Index (SSMI) in three drought-prone regions: Sonora (Mexico), Maipo (Chile), and Mendoza-Tunuyán (Argentina) to study their temporal interdependence. For this evaluation we use precip

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Li, Yi, Chunyan Chen, and Changfeng Sun. "Drought severity and change in Xinjiang, China, over 1961–2013." Hydrology Research 48, no. 5 (2016): 1343–62. http://dx.doi.org/10.2166/nh.2016.026.

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Monthly climatic data from 53 sites across Xinjiang, China, were used to compare drought severity from the widely accepted Standardized Precipitation Index (SPI) with the recently proposed Standardized Precipitation Evapotranspiration Index (SPEI), as well as trends in the data from 1961 to 2013. Monthly Thornthwaite based (ETo.TW) and Penman-Monteith based reference evapotranspiration (ETo.PM) were computed and subsequently used to estimate SPEITW and SPEIPM, respectively. The indices' sensitivity, spatiotemporal distributions and trends were analyzed. The results showed that the TW equation

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Chen, Huopo, and Jianqi Sun. "Changes in Drought Characteristics over China Using the Standardized Precipitation Evapotranspiration Index." Journal of Climate 28, no. 13 (2015): 5430–47. http://dx.doi.org/10.1175/jcli-d-14-00707.1.

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Abstract The standardized precipitation evapotranspiration index (SPEI) is computed and compared in China using reference evapotranspiration calculated using the Thornthwaite (TH) approach and the Penman–Monteith (PM) equation. The analysis reveals that SPEI_PM outperforms the SPEI_TH with regard to drought monitoring during the period 1961–2012 over China, especially in arid regions of China. Furthermore, the SPEI_PM also performs better with regard to observed variations in soil moisture and streamflow in China. Thus, changes in drought characteristics over China are detected on the basis of

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Liu, Shaohua, Denghua Yan, Hao Wang, Chuanzhe Li, Baisha Weng, and Tianling Qin. "Standardized Water Budget Index and Validation in Drought Estimation of Haihe River Basin, North China." Advances in Meteorology 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/9159532.

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The physical-based drought indices such as the self-calibrated Palmer Drought Severity Index (sc-PDSI) with the fixed time scale is inadequate for the multiscalar drought assessment, and the multiscalar drought indices including Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), and Standardized Precipitation Evapotranspiration Index (SPEI) based on the meteorological factors are lack of physical mechanism and cannot depict the actual water budget. To fill this gap, the Standardized Water Budget Index (SWBI) is constructed based on the difference between areal precipit

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Vicente-Serrano, S. M., S. Beguería, J. I. López-Moreno, M. Angulo, and A. El Kenawy. "A New Global 0.5° Gridded Dataset (1901–2006) of a Multiscalar Drought Index: Comparison with Current Drought Index Datasets Based on the Palmer Drought Severity Index." Journal of Hydrometeorology 11, no. 4 (2010): 1033–43. http://dx.doi.org/10.1175/2010jhm1224.1.

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Abstract A monthly global dataset of a multiscalar drought index is presented and compared in terms of spatial and temporal variability with the existing continental and global drought datasets based on the Palmer drought severity index (PDSI). The presented dataset is based on the standardized precipitation evapotranspiration index (SPEI). The index was obtained using the Climatic Research Unit (CRU) TS3.0 dataset at a spatial resolution of 0.5°. The advantages of the new dataset are that (i) it improves the spatial resolution of the unique global drought dataset at a global scale; (ii) it is

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Feizi, Mehdi, Najmeh Heidarzadeh Janatabadi, and Ahmad Saradari Torshizi. "Rainfall and social disputes in Iran." Water Policy 21, no. 4 (2019): 880–93. http://dx.doi.org/10.2166/wp.2019.101.

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Abstract Water crisis and, particularly, drop in rainfall in Iran are not only an environmental matter but also a security issue. This paper tries to draw attention to the substantial social consequences of climate change in Iran and particularly addresses whether precipitation scarcity from 2007 to 2014 has a conflict-making effect in the province of Iran using the system GMM model. We show that rainfall shortage and the Standardized Precipitation Evapotranspiration Index (SPEI), as an index of drought, could stimulate the propensity for individuals to engage in disruptive activities in provi

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Zhu, Ye, Yi Liu, Xieyao Ma, Liliang Ren, and Vijay Singh. "Drought Analysis in the Yellow River Basin Based on a Short-Scalar Palmer Drought Severity Index." Water 10, no. 11 (2018): 1526. http://dx.doi.org/10.3390/w10111526.

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Focusing on the shortages of moisture estimation and time scale in the self-calibrating Palmer drought severity index (scPDSI), this study proposed a new Palmer variant by introducing the Variable Infiltration Capacity (VIC) model in hydrologic accounting module, and modifying the standardization process to make the index capable for monitoring droughts at short time scales. The performance of the newly generated index was evaluated over the Yellow River Basin (YRB) during 1961–2012. For time scale verification, the standardized precipitation index (SPI), and standardized precipitation evapotr

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Peña-Gallardo, Marina, Sergio Vicente-Serrano, J. Camarero, et al. "Drought Sensitiveness on Forest Growth in Peninsular Spain and the Balearic Islands." Forests 9, no. 9 (2018): 524. http://dx.doi.org/10.3390/f9090524.

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Drought is one of the key natural hazards impacting net primary production and tree growth in forest ecosystems. Nonetheless, tree species show different responses to drought events, which make it difficult to adopt fixed tools for monitoring drought impacts under contrasting environmental and climatic conditions. In this study, we assess the response of forest growth and a satellite proxy of the net primary production (NPP) to drought in peninsular Spain and the Balearic Islands, a region characterized by complex climatological, topographical, and environmental characteristics. Herein, we emp

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Drumond, Anita, Milica Stojanovic, Raquel Nieto, et al. "Dry and Wet Climate Periods over Eastern South America: Identification and Characterization through the SPEI Index." Atmosphere 12, no. 2 (2021): 155. http://dx.doi.org/10.3390/atmos12020155.

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A large part of the population and the economic activities of South America are located in eastern regions of the continent, where extreme climate events are a recurrent phenomenon. This study identifies and characterizes the dry and wet climate periods at domain-scale occurring over the eastern South America (ESA) during 1980–2018 through the multi-scalar Standardized Precipitation–Evapotranspiration Index (SPEI). For this study, the spatial extent of ESA was defined according to a Lagrangian approach for moisture analysis. It consists of the major continental sink of the moisture transported

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Pei, Zhifang, Shibo Fang, Lei Wang, and Wunian Yang. "Comparative Analysis of Drought Indicated by the SPI and SPEI at Various Timescales in Inner Mongolia, China." Water 12, no. 7 (2020): 1925. http://dx.doi.org/10.3390/w12071925.

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The global climate is noticeably warming, and drought occurs frequently. Therefore, choosing a suitable index for drought monitoring is particularly important. The standardized precipitation index (SPI) and the standardized precipitation evapotranspiration index (SPEI) are commonly used indicators in drought monitoring. The SPEI takes temperature into account, but the SPI does not. In the context of global warming, what are their differences and applicability in regional drought monitoring? In this study, after calculating the SPI and SPEI at 1-, 3-, 6-, and 12-month timescales at 102 meteorol

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Peng, Jian, Simon Dadson, Feyera Hirpa, et al. "A pan-African high-resolution drought index dataset." Earth System Science Data 12, no. 1 (2020): 753–69. http://dx.doi.org/10.5194/essd-12-753-2020.

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Abstract. Droughts in Africa cause severe problems, such as crop failure, food shortages, famine, epidemics and even mass migration. To minimize the effects of drought on water and food security on Africa, a high-resolution drought dataset is essential to establish robust drought hazard probabilities and to assess drought vulnerability considering a multi- and cross-sectional perspective that includes crops, hydrological systems, rangeland and environmental systems. Such assessments are essential for policymakers, their advisors and other stakeholders to respond to the pressing humanitarian is

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