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Journal articles on the topic 'Radiant index of climate aridity'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Siedlecki, Mariusz. "Variability of hygro-climatic conditions of forest vegetation in Poland during the period of 1951–2015." Forest Research Papers 79, no. 2 (2018): 139–46. http://dx.doi.org/10.2478/frp-2018-0015.

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Abstract This work presents an assessment of changes in the hygro-climatic conditions determining the vegetation and productivity of forest areas. Selected indices such as the radiant index of climate aridity – RIA, optimal precipitation – Popt, critical value of precipitation – Pkrt and CVP index (Climate, Vegetation, Productivity), which describe annual biomass and wood production under climatic conditions, were used. The analysis is based on standard meteorological measurements taken from 21 stations from the period of 1951–2015. The daily data were employed to calculate the previously ment

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Jia, Xiru, Guangyong You, Shawn McKenzie, Changxin Zou, Jixi Gao, and Anlan Wang. "Inter-annual variations of vegetation dynamics to climate change in Ordos, Inner Mongolia, China." PLOS ONE 17, no. 11 (2022): e0264263. http://dx.doi.org/10.1371/journal.pone.0264263.

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To reveal the characteristics of climate change and the controlling factors for vegetation dynamics in the Ordos, Inner Mongolia, China, 34 years (1982–2015) of regional climate variables and vegetation dynamics were investigated. The results show that: Annual mean air temperature (TMP) significantly increased with a linear slope of 0.473°C/10yr. Annual precipitation (PRE) had a non-significant positive trend nearly 5 times lower than the trend of potential evapotranspiration (PET). The average Normalized Difference Vegetation Index (NDVI) computed for the region was found to show a significan

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Mariusz, Siedlecki. "Variability of hygro-climatic conditions of forest vegetation in Poland during the period of 1951–2015*." Lesne Prace Badawcze / Forest Research Papers 79, no. 2 (2018): 139–46. https://doi.org/10.2478/frp-2018-0015.

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This work presents an assessment of changes in the hygro-climatic conditions determining the vegetation and productivity of forest areas. Selected indices such as the radiant index of climate aridity – RIA, optimal precipitation – P<sub>opt</sub>, critical value of precipitation – P<sub>krt</sub> and CVP index (Climate, Vegetation, Productivity), which describe annual biomass and wood production under climatic conditions, were used. The analysis is based on standard meteorological measurements taken from 21 stations from the period of 1951–2015. The daily data were empl

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4

Zhang, Hongli, Liang Zhang, Qiang Zhang, Qian Liu, Xiaoni You, and Lixia Wang. "Analysis of the Difference between Climate Aridity Index and Meteorological Drought Index in the Summer Monsoon Transition Zone." Remote Sensing 15, no. 5 (2023): 1175. http://dx.doi.org/10.3390/rs15051175.

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The summer monsoon transition zone (SMTZ) in China represents an unusual land type with an agro-pasture ecotone, and it is a climate-sensitive region. Changes in climate aridity and changes in meteorological drought are mutually related yet fundamentally different. In this study, potential evapotranspiration (ETO) is calculated using Penman–Monteith, based on China’s national meteorological stations data from 1961 to 2013. An ETO-based climate aridity index (IAI) and ETO-based standardized precipitation evapotranspiration index (SPEI) are used as the metrics for climate aridity and meteorologi

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Liu, Yongqiang, Lu Hao, Decheng Zhou, et al. "Identifying a transition climate zone in an arid river basin using the evaporative stress index." Natural Hazards and Earth System Sciences 19, no. 10 (2019): 2281–94. http://dx.doi.org/10.5194/nhess-19-2281-2019.

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Abstract. Aridity indices have been widely used in climate classification. However, there is not enough evidence for their ability in identifying the multiple climate types in areas with complex topography and landscape, especially in those areas with a transition climate. This study compares a traditional meteorological aridity index (AI), defined as the ratio of precipitation (P) to potential evapotranspiration (PET), with a hydrological aridity index, the evaporative stress index (ESI) defined as the ratio of actual evapotranspiration (AET) to PET in the Heihe River Basin (HRB) of arid nort

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Alawadi, Wisam, Ayman Alak Hassan, and Ammar Dakhil. "Evaluation of Grid-Based Aridity Indices in Classifying Aridity Zones in Iraq." Nature Environment and Pollution Technology 23, no. 2 (2024): 1151–60. http://dx.doi.org/10.46488/nept.2024.v23i02.049.

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In this study, the aridity index (AI) based on gridded climate data was validated for defining aridity and classifying aridity zones in Iraq through comparison with the results obtained by the station-based aridity index. Gauge-based gridded climate data taken from Climatic Research Unit Timeseries (CRU TS) were used to determine the annual value of four aridity indices (Lang, De Martonne, Ernic and UNEP AI) over the period 1998-2011. The results showed that the aridity distribution maps derived using grid-based aridity indices were reasonably close to those found using station-based ones. The

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Wu, Yanfeng, Guangxin Zhang, Hong Shen, Y. Jun Xu, and Batur Bake. "Attribute Analysis of Aridity Variability in North Xinjiang, China." Advances in Meteorology 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/9610960.

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Identifying the dominant meteorological factors affecting aridity variability can improve our understanding of climate change and its future trend in arid and semiarid regions. This study investigated the spatiotemporal aridity variability in North Xinjiang, China, from 1961 to 2013, based on the UNESCO aridity index (precipitation/potential evapotranspiration), and analyzed its association with meteorological factors. The results suggest that North Xinjiang is becoming more humid with an increasing trend in aridity index. Precipitation, temperature, and relative humidity have positive correla

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Haider, Sajjad, and Shahzada Adnan. "Classification and Assessment of Aridity Over Pakistan Provinces (1960-2009)." International Journal of Environment 3, no. 4 (2014): 24–35. http://dx.doi.org/10.3126/ije.v3i4.11728.

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Due to rapid growth of population, massive deforestation and anthropogenic activities, noticeable change in climate conditions is being observed in Pakistan. Increased aridity due to climate change is a growing environmental problem of the agricultural country like Pakistan. It is essential to assess and monitor aridity to combat the probable land degradation and drought desertification. Identification of arid and semi arid regions on climatic basis is the first essential step in any project of land reclamation for agricultural and other purposes. A geographic information system is used in thi

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Ramachandran, A., Dhanya Praveen, R. Jaganathan, and K. Palanivelu. "Projected and Observed Aridity and Climate Change in the East Coast of South India under RCP 4.5." Scientific World Journal 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/169761.

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In the purview of global warming, the present study attempts to project changes in climate and quantify the changes in aridity of two coastal districts in south India under the RCP 4.5 trajectory. Projected climate change output generated by RegCM 4.4 model, pertaining to 14 grid points located within the study area, was analyzed and processed for this purpose. The meteorological parameters temperature and precipitations were used to create De Martonne Aridity Index, to assess the spatial distribution of aridity. The original index values ranged from 13.7 to 16.4 mm/°C, characterizing this are

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Huang, Huiping, Yuping Han, Mingming Cao, Jinxi Song, and Heng Xiao. "Spatial-Temporal Variation of Aridity Index of China during 1960–2013." Advances in Meteorology 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1536135.

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Aridity index, as the ration of potential evapotranspiration and precipitation, is an important indicator of regional climate. GIS technology, Morlet wavelet, Mann-Kendall test, and principal component analysis are utilized to investigate the spatial-temporal variation of aridity index and its impacting factors in China on basis of climate data from 599 stations during 1960–2013. Results show the following. (1) Boundaries between humid and semihumid region, and semihumid and semiarid region coincide with 400 mm and 800 mm precipitation contour lines. (2) Average annual aridity index is between

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Mohammed, Ruqayah, and Miklas Scholz. "Climate Variability Impact on the Spatiotemporal Characteristics of Drought and Aridityin Arid and Semi-Arid Regions." Water Resources Management 33, no. 15 (2019): 5015–33. http://dx.doi.org/10.1007/s11269-019-02397-3.

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AbstractInvestigating the spatiotemporal distribution of climate data and their impact on the allocation of the regional aridity and meteorological drought, particularly in semi-arid and arid climate, it is critical to evaluate the climate variability effect and propose sufficient adaptation strategies. The coefficient of variation, precipitation concentration index and anomaly index were used to evaluate the climate variability, while the Mann-Kendall and Sen’s slope were applied for trend analysis, together with homogeneity tests. The aridity was evaluated using the alpha form of the reconna

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Singh, Nitish Kumar, Vijay Kumar Baraik, and Mahendra Singh Nathawat. "Spatiotemporal changes in Indian land aridity : An assessment based on the CRU data and UNEP’s aridity index." MAUSAM 76, no. 2 (2025): 417–30. https://doi.org/10.54302/mausam.v76i2.6365.

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This study delves into the nuanced dynamics of aridity patterns over Indian land from 1901 to 2021, crucial for informed land and water management amidst rising demands and climate uncertainties. Employing the CRU dataset and UNEP's aridity index, the research identifies five aridity categories and conducts a meticulous spatio-temporal analysis. Utilizing the MK-trend analysis method, significant trends are discerned, elucidating shifts in hyper-arid, arid, semi-arid, sub-humid, and humid lands. Notably, a diminishing trend is observed in hyper-arid, arid, and humid areas, while semi-arid and

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Gavrilov, Milivoj B., Milica G. Radaković, György Sipos, et al. "Aridity in the Central and Southern Pannonian Basin." Atmosphere 11, no. 12 (2020): 1269. http://dx.doi.org/10.3390/atmos11121269.

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For the investigation of geographical, monthly, seasonal, and annual distributions of aridity and its annual trend in the region of the Central and Southern Pannonian Basin (CSPB), which includes the territories of Hungary and Vojvodina (Northern Serbia), the De Martonne Aridity Index (DMAI) was used. The DMAI was originally calculated from a total of 78 meteorological stations with the maximum available time series of climatological data in three cases: 1931–2017 for Hungary; 1949–2017 for Vojvodina; and 1949–2017 for Hungary and Vojvodina jointly. The Palmer Drought Severity Index (PDSI) was

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Asvarova, Tatiana A., Gasan N. Gasanov, Rajab Z. Usmanov, et al. "The Influence of Climatic Indicators on the State of the Vegetation Cover of the Terek-Kuma Lowland Under Conditions of Aridization." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 1 (March 31, 2025): 58–66. https://doi.org/10.18522/1026-2237-2025-1-58-66.

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Over the years of research in 2011-2023, the de Martonne aridity index, in the range of values 2013, 2015-2020 and 2022, is characterized by an arid climate, and in the years 2011, 2012, 2014, 2023 - a semi-arid climate type, the difference between the aridity indices is more than 2 times. Aridity is associated with a 2-fold decrease in precipitation from 372 to 190 mm and an increase in the average annual temperature from 12.7 to 13.9 °C. It is shown that the greatest influence on the value of the aridity index is provided by the moisture coefficient factor (R = 0.99). Productivity in dry yea

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Zatula, Vasyl. "Complex assessing of aridity in Ukraine." Visnyk of V.N. Karazin Kharkiv National University, series Geology. Geography. Ecology, no. 61 (December 1, 2024): 180–92. https://doi.org/10.26565/2410-7360-2024-61-15.

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Introduction. The aridity is an important part of the climate characterization of a territory. Over the past 100 years, aridity indices have been used to assess it. The purpose of article is to characterize the patterns of the spatial distribution and changes over time of aridity indices on the territory of Ukraine for the period 1961-2020. Data and methods. The Pinna combinative index (PCI) and its modification (PCIm) were used to determine the aridity assessment. Basic calculations of these indices were performed for more than 150 weather stations in Ukraine over the last two 30-year periods

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H. HAFTOM, A. HAFTU, K. GOITOM, and H. MESERET. "Agroclimatic zonation of Tigray region of Ethiopia based on aridity index and traditional agro-climatic zones." Journal of Agrometeorology 21, no. 2 (2021): 176–81. http://dx.doi.org/10.54386/jam.v21i2.229.

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The aim of this study was to identify the agroclimatic zones of Tigray region based on aridity index and traditional agroclimatic zone using 37-year (1981-2017) spatial climate data downloaded for Tigray region from Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) for rainfall and from Enhancing National Climate Services (ENACTS) data for temperature. Arc map 10.3 was used for mapping of all climatic variables and zonation of agro-climatic zones. Potential evapotranspiration (PET) was computed based on Hargreaves formula and the aridity index was computed. Besides, the d

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Santana, Otacilio Antunes, José Imaña Encinas, Bárbara Alves de Sousa, Sandra Razana Silva do Monte, and Valéria Sandra de Oliveira Costa. "Aridy index over time in five ecosystems on semiarid." Journal of Hyperspectral Remote Sensing 9, no. 3 (2019): 138. http://dx.doi.org/10.29150/jhrs.v9.3.p138-145.

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The local climate change was registered over time (1992-2018) on different land use ecosystems, in Brazilian Semiarid area. The aimed of this work was to analyze aridity index in five ecosystems (Wild Caatinga, Caatinga on management, Cactaceae field, Eucalyptus reforestation, and Fabaceae crop), and to compare this index with environment variables. Meteorological towers and measures with porometer and psychrometers were carried out to collect the data. The main result was that the studied areas are hotter and drier. The Fabaceae crop and Eucalyptus reforestation studied ecosystems already are

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Gavrilov, Milivoj B., Tin Lukić, Natalija Janc, Biljana Basarin, and Slobodan B. Marković. "Forestry Aridity Index in Vojvodina, North Serbia." Open Geosciences 11, no. 1 (2019): 367–77. http://dx.doi.org/10.1515/geo-2019-0029.

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Abstract In investigating aridity in Vojvodina (a region in the northern part of Serbia), the Forestry Aridity Index (FAI) was used. This index was chosen due to being one of the most suitable indices for the analysis of the interaction of climate and vegetative processes, especially in forestry. The spatial distribution of the FAI for annual and decennial periods, as well as its annual trend, is analysed. Satisfactory compatibility between the low (forest) and high (steppe) FAI values with the forest and steppe vegetation on the Vojvodina terrains was obtained. The calculated values of the FA

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Andrade, Cristina, Joana Contente, and João Andrade Santos. "Climate Change Projections of Aridity Conditions in the Iberian Peninsula." Water 13, no. 15 (2021): 2035. http://dx.doi.org/10.3390/w13152035.

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The assessment of aridity conditions is a key factor for water management and the implementation of mitigation and adaptation policies in agroforestry systems. Towards this aim, three aridity indices were computed for the Iberian Peninsula (IP): the De Martonne Index (DMI), the Pinna Combinative Index (PCI), and the Erinç Aridity Index (EAI). These three indices were first computed for the baseline period 1961–1990, using gridded observational data (E-OBS), and subsequently, for the periods 2011–2040 (short range) and 2041–2070 (medium range), using an ensemble of six regional climate model (R

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García-Martín, Abelardo, Cristina Aguirado, Luis L. Paniagua, Virginia Alberdi, Francisco J. Moral, and Francisco J. Rebollo. "Spatial Analysis of Aridity during Grapevine Growth Stages in Extremadura (Southwest Spain)." Land 11, no. 12 (2022): 2125. http://dx.doi.org/10.3390/land11122125.

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Aridity is a key determinant of agriculture worldwide due to rising temperatures, rainfall variability, and drought frequency and intensity, amongst other factors. The De Martonne aridity index is particularly useful to evaluate the spatial and temporal variations in aridity in agricultural regions for characterising the climate of these areas and evaluating their susceptibility to climate change. From the mean precipitation and maximum–minimum daily temperature values recorded at 108 weather stations over 32 years (1989–2020) in Extremadura (southwest Spain), spatial analysis of aridity was p

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Gomes Sales, Eliton Sancler, Wendy Kaori Matsunaga, Célia Campos Braga, Meiry Sayuri Sakamoto, Daisy Beserra Lucena, and José Ivaldo Barbosa de Brito. "Climate classification for Northeast Brazil using reanalysis data and the Absolute Aridity Index." Revista Brasileira de Geografia Física 17, no. 3 (2024): 1478–500. http://dx.doi.org/10.26848/rbgf.v17.3.p1478-1500.

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The climate of the Northeast Region of Brazil (NEB) has been intensively studied and analyzed for climate classification. The aridity index of the United Nations Environment Programme (UNEP) (AIUNEP) has been used for this purpose, but without fully satisfactory results. The input variables needed for its calculation are precipitation and reference potential evapotranspiration (ET0). However, although rainfall stations recording routine measurements of precipitation are well distributed in the NEB, they do not provide the necessary variables for estimating ET0. Thus, interpolation is used to c

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Salvati, Luca, Marco Zitti, Rosanna Di Bartolomei, and Luigi Perini. "Climate Aridity under Changing Conditions and Implications for the Agricultural Sector: Italy as a Case Study." Geography Journal 2013 (December 20, 2013): 1–7. http://dx.doi.org/10.1155/2013/923173.

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A comprehensive diachronic analysis (1951–2010) of precipitation and temperature regimes has been carried out at the national and regional scale in Italy to investigate the impact of climate aridity on the agricultural system. Trends in climate aridity have been also analysed using UNEP aridity index which is the ratio between rainfall and potential evapotranspiration on a yearly basis. During the examined time period, and particularly in the most recent years, a gradual reduction in rainfall and growing temperatures have been observed which have further widened the gap between precipitation a

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Tijdeman, Erik, Sophie Bachmair, and Kerstin Stahl. "Controls on hydrologic drought duration in near-natural streamflow in Europe and the USA." Hydrology and Earth System Sciences 20, no. 10 (2016): 4043–59. http://dx.doi.org/10.5194/hess-20-4043-2016.

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Abstract. Climate classification systems, such as Köppen–Geiger and the aridity index, are used in large-scale drought studies to stratify regions with similar hydro-climatic drought properties. What is currently lacking is a large-scale evaluation of the relation between climate and observed streamflow drought characteristics. In this study we explored how suitable common climate classifications are for differentiating catchments according to their characteristic hydrologic drought duration and whether drought durations within the same climate classes are comparable between different regions.

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Tijdeman, E., S. Bachmair, and K. Stahl. "Controls on hydrologic drought duration in near-natural streamflow in Europe and the USA." Hydrology and Earth System Sciences Discussions 12, no. 12 (2015): 12877–910. http://dx.doi.org/10.5194/hessd-12-12877-2015.

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Abstract. Climate classification systems, such as Köppen–Geiger and the aridity index, are often used in large-scale drought modeling studies and in drought monitoring and early warning systems to stratify regions with similar hydro-climatic drought properties. What is currently lacking is a large-scale evaluation of the relation between climate and hydrologic drought characteristics. In this study we explored how suitable common climate classifications are for differentiating river basins according to their characteristic hydrologic drought duration and whether drought durations within the sa

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Ahmed, Kamal, Shamsuddin Shahid, Xiaojun Wang, Nadeem Nawaz, and Najeebullah Khan. "Spatiotemporal changes in aridity of Pakistan during 1901–2016." Hydrology and Earth System Sciences 23, no. 7 (2019): 3081–96. http://dx.doi.org/10.5194/hess-23-3081-2019.

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Abstract. The changing characteristics of aridity over a larger spatiotemporal scale have gained interest in recent years due to climate change. The long-term (1901–2016) changes in spatiotemporal patterns of annual and seasonal aridity during two major crop growing seasons of Pakistan, Kharif and Rabi, are evaluated in this study using gridded precipitation and potential evapotranspiration (PET) data. The UNESCO aridity index was used to estimate aridity at each grid point for all the years between 1901 and 2016. The temporal changes in aridity and its associations with precipitation and PET

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Medeiros, Raimundo Mainar de. "Water Balance and Climate of the Ipojuca River Water Basin – Pernambuco, Brazil." Journal of Hyperspectral Remote Sensing 14, no. 2 (2025): 999–1025. https://doi.org/10.29150/jhrs.v14i2.263676.

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The objective is to carry out the analysis of the climatic water balance and make a comparison between the municipalities surrounding the Ipojuca River basin, using the applications of climatic indices and aridity. The study area is the Ipojuca River – Pernambuco river basin, made up of twenty-seven municipalities. The rainfall data were provided by the Water and Climate Agency of the State of Pernambuco and thermal data were estimated by the Estima_T software corresponding to the years 1962 to 2018. For the climatic and agricultural suitability analysis, climatic indices of aridity and water

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Gavrilov, Milivoj B., Wenling An, Chenxi Xu, et al. "Independent Aridity and Drought Pieces of Evidence Based on Meteorological Data and Tree Ring Data in Southeast Banat, Vojvodina, Serbia." Atmosphere 10, no. 10 (2019): 586. http://dx.doi.org/10.3390/atmos10100586.

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In this study, aridity data and tree ring data were collected in Northern Serbia, in Southeast (SE) Banat, a subregion within Vojvodina, and Vojvodina at large. They were each investigated independently. The De Martonne Aridity Index and the Forestry Aridity Index are derived from examining the relationship between precipitation and surface air temperature data sets sourced from seven meteorological stations in SE Banat, and from 10 meteorological stations located in Vojvodina as a whole. Vojvodina is a large territory and used as the control area, for the period 1949–2017. The Palmer Drought

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Oulhaci, Dalila, and Meriem Attab. "Study of climate variability in a subhumid region (case of Guelma) and an arid region (case of Ouargla) in Algeria." Brazilian Journal of Animal and Environmental Research 7, no. 3 (2024): e72423. http://dx.doi.org/10.34188/bjaerv7n3-060.

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Climate variations are a major environmental issue dominating our time and a challenge facing environmental monitoring agencies. As part of the development of this work concerning the study and comparison of climatic fluctuations of an arid region (Ouargla) and a subhumid region (Guelma), we proceeded, after having grouped the climatic data (temperature, precipitation and humidity), to calculate heat and aridity indicators for an approximate period of thirty (30) years. Forecasts using the “Weka” software showed climate variation but at variable rates. During the calibration phase of the aridi

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Conceição, Marco Antônio Fonseca, Jorge Tonietto, and Reginaldo Teodoro de Souza. "Climatic water indices for viticulture." Pesquisa Agropecuária Brasileira 53, no. 6 (2018): 765–68. http://dx.doi.org/10.1590/s0100-204x2018000600013.

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Abstract: The objective of this work was to evaluate the performance of vineyard water indices in different grape-growing regions. The climate data used come from the historical series of weather stations located in 18 countries. The evaluated indices were the following: dryness, Zuluaga, humidity, aridity, moisture, and the grapevine water index. The grapevine water index and the indices of drought, moisture, and aridity exhibit similar performances, which makes them suitable to be used equivalently in climatological studies of grapevine regions.

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Kim, Seoyoung, Sun-Kwon Yoon, and Namjeong Choi. "Evaluating the Drainage Density Characteristics on Climate and Drainage Area Using LiDAR Data." Applied Sciences 13, no. 2 (2023): 700. http://dx.doi.org/10.3390/app13020700.

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The purpose of this study is to identify the relationship between drainage density and climate, as represented by the climate aridity index, and to understand the relationship between drainage density and drainage area. A total of 121 study sites with low human impact, and a wide range of climate aridity index 0.3 (humid)–10.4 (arid), were selected based on the availability of light detection and ranging (LiDAR) data, producing a digital elevation model (DEM) with a spatial resolution of 1 m. A curvature-based method, incorporating both positive and negative curvature information, was used to

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Yann, Lindsey T., Larisa R. G. DeSantis, Ryan J. Haupt, Jennifer L. Romer, Sarah E. Corapi, and David J. Ettenson. "The application of an oxygen isotope aridity index to terrestrial paleoenvironmental reconstructions in Pleistocene North America." Paleobiology 39, no. 4 (2013): 576–90. http://dx.doi.org/10.1666/12059.

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Geochemical tools, including the analysis of stable isotopes from fossil mammals, are often used to infer regional climatic and environmental differences. We have further developed an oxygen isotope aridity index and used oxygen (δ18O) isotope values and carbon (δ13C) isotope values to assess regional climatic differences between the southeastern and southwestern United States during the Pleistocene. Using data collected from previously published studies, we assigned taxa to evaporation-sensitivity categories by quantifying the frequency and magnitude of aridity index values (i.e., an average

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Moral, Francisco J., Cristina Aguirado, Virginia Alberdi, Luis L. Paniagua, Abelardo García-Martín, and Francisco J. Rebollo. "Future Scenarios for Aridity under Conditions of Global Climate Change in Extremadura, Southwestern Spain." Land 12, no. 3 (2023): 536. http://dx.doi.org/10.3390/land12030536.

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Aridity conditions in semi-arid lands with warm climates are key variables that must be assessed to properly manage water and plan to minimise the threat of desertification. This study analyses the spatial distribution of aridity in Extremadura, southwestern Spain, using the De Martonne aridity index (IDM), considering a historical reference period (1971–2005) and three-time intervals: 2006–2035 (near future), 2036–2065 (mid-century) and 2066–2095 (end of the century). Projections were computed using a set of ten global climate model (GCM) and regional climate model (RCM) combinations under tw

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Park, Chang-Eui, Su-Jong Jeong, Chang-Hoi Ho, et al. "Dominance of climate warming effects on recent drying trends over wet monsoon regions." Atmospheric Chemistry and Physics 17, no. 17 (2017): 10467–76. http://dx.doi.org/10.5194/acp-17-10467-2017.

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Abstract. Understanding changes in background dryness over land is key information for adapting to climate change because of its critical socioeconomic consequences. However, causes of continental dryness changes remain uncertain because various climate parameters control dryness. Here, we verify dominant climate variables determining dryness trends over continental eastern Asia, which is characterized by diverse hydroclimate regimes ranging from arid to humid, by quantifying the relative effects of changes in precipitation, solar radiation, wind speed, surface air temperature, and relative hu

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Shi, Haiyang, Geping Luo, Olaf Hellwich, et al. "Global dryland aridity changes indicated by atmospheric, hydrological, and vegetation observations at meteorological stations." Hydrology and Earth System Sciences 27, no. 24 (2023): 4551–62. http://dx.doi.org/10.5194/hess-27-4551-2023.

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Abstract. In the context of global warming, an increase in atmospheric aridity and global dryland expansion under the future climate has been expected in previous studies. However, this conflicts with observed greening over drylands and the insignificant increase in hydrological and ecological aridity from the ecohydrology perspective. Combining climatic, hydrological, and vegetation data, this study evaluated global dryland aridity changes at meteorological stations from 2003 to 2019. A decoupling between atmospheric, hydrological, and vegetation aridity was found. Atmospheric aridity represe

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Wang, D., and L. Wu. "Similarity between runoff coefficient and perennial stream density in the Budyko framework." Hydrology and Earth System Sciences Discussions 9, no. 6 (2012): 7571–89. http://dx.doi.org/10.5194/hessd-9-7571-2012.

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Abstract. Streams are categorized into perennial and temporal streams based on flow durations. Perennial stream is the basic network, and temporal stream (ephemeral or intermittent) is the expanded network. Connection between perennial stream and runoff generation at the mean annual scale exists since one of the hydrologic functions of perennial stream is to deliver runoff. The partitioning of precipitation into runoff and evaporation at the mean annual scale, on the first order, is represented by the Budyko hypothesis which quantifies the ratio of evaporation to precipitation (E/P) as a funct

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Kadovic, Ratko, Petar Spasov, Yousef Bohajar, Snezana Belanovic-Simic, and Olivera Kosanin. "Analysis of aridity indicators in the Deliblato Sands." Bulletin of the Faculty of Forestry, no. 109 (2014): 97–112. http://dx.doi.org/10.2298/gsf1409097k.

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Deliblato Sands are located in the southern part of Banat region in Vojvodina province. According to the estimated changes of basic climate parameters in this part of the Republic of Serbia during past decades very strong rise in annual air temperatures (T) was registered, an average of 0.52?C per decade. This rise in temperature increased the potential evapotranspiration (PET), which together with precipitation can increase the degree of aridity of climate in the study area. However, in the same period an increase in annual precipitation sum (P) was observed, an average of about 35 mm per dec

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He, Qing, Hui Lu, Kun Yang, et al. "A simple framework to characterize land aridity based on surface energy partitioning regimes." Environmental Research Letters 17, no. 3 (2022): 034008. http://dx.doi.org/10.1088/1748-9326/ac50d4.

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Abstract Land aridity is often characterized by the aridity index (AI), which does not account for land surface water-energy interactions that are crucially important in determining regional climate. Such interactions can be captured by the evaporative fraction (EF, ratio of evapotranspiration to available energy) regimes. As EF is subject to energy and water limitations in humid and dry areas, respectively, EF regimes may be used to characterize land aridity to account for the influence of complex land characteristics and their impact on water availability. Here, we propose a simple framework

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Kadović, Ratko, Petar Spasov, Youssef Mansour Bohajar, Simić Snežana Belanović, and Olivera Košanin. "ANALYSIS OF ARIDITY INDICATORS IN THE DELIBLATO SANDS." Bulletin of the Faculty of Forestry, no. 109 (December 31, 2014): 97–112. https://doi.org/10.2298/GSF1409097K.

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<strong>ANALYSIS OF ARIDITY INDICATORS IN THE DELIBLATO SANDS</strong> <strong>Ratko KadovićPetar SpasovYousef Mansour Ali BohajarSnežana Belanović SimićOlivera Ko&scaron;anin</strong> <strong></strong><strong>Abstract: </strong> Deliblato Sands are located in the southern part of Banat region in Vojvodina province. According to the estimated changes of basic climate parameters in this part of the Republic of Serbia during past decades very strong rise in annual air temperatures (T) was registered, an average of 0.52°C per decade. This rise in temperature increased the potential evapotrans

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Yan, Yimeng, Jiaxi Cao, Yufan Gu, et al. "An Evaluation of Ecosystem Quality and Its Response to Aridity on the Qinghai–Tibet Plateau." Remote Sensing 16, no. 18 (2024): 3461. http://dx.doi.org/10.3390/rs16183461.

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Exploring the response of spatial and temporal characteristics of ecological quality change to aridity on the Qinghai–Tibet Plateau (QTP) can provide valuable information for regional ecological protection, water resource management, and climate change adaptation. In this study, we constructed the Remote Sensing Ecological Index (RSEI) and Standardized Precipitation Evapotranspiration Index (SPEI) based on the Google Earth Engine (GEE) platform with regional characteristics and completely analyzed the spatial and temporal variations of aridity and ecological quality on the QTP in the years 200

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Silva, Erika Roanna, and Gláuber Pontes Rodrigues. "EVOLUÇÃO HISTÓRICA DE ANOMALIAS DE CHUVA E ARIDEZ NO SEMIÁRIDO: O CASO DO MUNICÍPIO DE CRATEÚS, CEARÁ." ENERGIA NA AGRICULTURA 39 (January 2, 2024): 139–44. https://doi.org/10.17224/energagric.2024v39p139-144.

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EVOLUÇÃO HISTÓRICA DE ANOMALIAS DE CHUVA E ARIDEZ NO SEMIÁRIDO: O CASO DO MUNICÍPIO DE CRATEÚS, CEARÁ ERIKA ROANNA DA SILVA¹ E GLÁUBER PONTES RODRIGUES² 1 Departamento de Engenharia Agrícola, Universidade Federal do Ceará, Av. Mister Hull, s/n - Pici - CEP 60455-760 - Fortaleza - CE, Brasil, roannasilva18@gmail.com, https://orcid.org/0009-0000-0484-8576.. Departamento de Engenharia Agrícola, Universidade Federal do Ceará; Av. Mister Hull, s/n - Pici - CEP 60455-760 - Fortaleza – CE, Brasil, pontesglauber@gmail.com; https://orcid.org/0000-0001-7427-6104 RESUMO: A região dos Inhamuns, no sertão

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Ali, Zulfiqar, Mohd Khairul Idlan Muhammd, and Shamsuddin Shahid. "Comparison of bias correction methods in the arid region of Pakistan." IOP Conference Series: Earth and Environmental Science 1467, no. 1 (2025): 012026. https://doi.org/10.1088/1755-1315/1467/1/012026.

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Abstract This study presented the effectiveness of univariate quantile mapping (QM) bias correction and multivariate (MBCn) methods by comparison with the European Land Reanalysis (ERA5) gridded dataset in the arid region of Pakistan. The study Girst bias-corrected rainfall (Pr), maximum temperature (Tmax), and minimum temperature (Tmin) and compared bias-corrected variables with ERA5 variables. The climate indices such as the potential evapotranspiration (PET), aridity index (AI), and multivariate drought index obtained using both methods were also compared with ERA5-based indices. The result

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Booij, Martijn J., Theo C. Schipper, and Hero Marhaento. "Attributing Changes in Streamflow to Land Use and Climate Change for 472 Catchments in Australia and the United States." Water 11, no. 5 (2019): 1059. http://dx.doi.org/10.3390/w11051059.

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A data-based method to distinguish climate and land use change impacts on streamflow has been previously developed and needs further evaluation through a large sample study. This study aims to apply the method to a large sample set of 472 catchments in the United States and Australia. The method calculates the water and energy budget of a catchment which can be translated to climate and land use induced changes in streamflow between two periods: a pre-change and post-change period. Several geographical characteristics (e.g., aridity index, average catchment slope, historical land use) were con

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Goparaju, Laxmi, and Firoz Ahmad. "Seasonal (Kharif, Rabi and Zaid) Precipitation, Potential Evapotranspiration and Aridity Index with Respect to Various Agro Ecological Zones of India." Scientific Bulletin 24, no. 1 (2019): 32–45. http://dx.doi.org/10.2478/bsaft-2019-0004.

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Abstract Climate change has very significant impact on livelihoods and food security. The geospatial technology provides a better understanding of various themes related to climate change. This study examined the seasonal (kharif, rabi and zaid) long term (1970-2000) monthly climatic parameters such as precipitation, potential evapotranspiration over the country of India. The seasonal Aridity Index was computed and analyzed with respect to various agro-ecological zones of India. The analysis of long term mean precipitation (mm) during kharif, rabi and zaid season was found to be in the range o

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Anil, Sawant Sushant, Dhananjayen ., and M. Sasi. "Spatio-Temporal Analysis of Aridity Trends and Shifts in Karnataka Over 63 Years (1958-2020): Insights into Climate Adaptation." Nature Environment and Pollution Technology 24, no. 2 (2025): B4255. https://doi.org/10.46488/nept.2025.v24i02.b4255.

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Understanding aridity trends is crucial for climate adaptation strategies. This study analyzes the spatial and temporal fluctuations in aridity across Karnataka, India, over 63 years from 1958 to 2020 using the Aridity Index (AI). Monthly, seasonal, and annual AI values were calculated using precipitation and potential evapotranspiration data sourced from TerraClimate. The results indicate that approximately 74% (142,464 sq. km) of Karnataka is classified as dryland, ranging from semi-arid to dry subhumid zones, while 26% (49,416 sq. km) falls under more humid non-dryland areas. The Malnad and

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Williams, Rebecca M. E. "Assessment of Martian Lake Hydrologic Index." Research Notes of the AAS 9, no. 5 (2025): 126. https://doi.org/10.3847/2515-5172/addab3.

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Abstract Large lakes are sensitive to climate shifts. This study investigated an established terrestrial lake metric as a tool for differentiating climate regimes on Mars. A global survey of martian lake hydrologic index (HI), the ratio of lake area to drainage area, showed that most sites have intermediate values (0.30–0.65). This is a null result as such values do not meaningfully differentiate between warm-wet and cold-dry conditions. However, one regional cluster of extreme low HI values (<0.10) is identified, and is consistent with extreme aridity. This corridor along the equatorial di

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Rim, Chang-Soo. "Homogeneity of Climate Aridity Index Trends Using Mann-Kendall Trend Test." Journal of Korea Water Resources Association 47, no. 7 (2014): 643–56. http://dx.doi.org/10.3741/jkwra.2014.47.7.643.

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Koffi, Djaman, and Ganyo Komla. "Trend analysis in reference evapotranspiration and aridity index in the context of climate change in Togo." Journal of Water and Climate Change 6, no. 4 (2015): 848–64. http://dx.doi.org/10.2166/wcc.2015.111.

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Reference evapotranspiration is a key parameter in hydrological and meteorological studies and used to determine the actual water use rate for various crops. The objectives of this study were to explore trend in the grass-reference evapotranspiration (ETo) through years 1961–2011 and to identify trend in the aridity index as an indicator of change in climate in Togo. ETo was calculated using the FAO-56 Penman–Monteith method, and trends analyses were performed with non-parametric statistics proposed by Mann–Kendall and the Sen slope estimator. Results showed that annual ETo varied from 1,440 t

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Blumenthal, Scott A., Naomi E. Levin, Francis H. Brown, et al. "Aridity and hominin environments." Proceedings of the National Academy of Sciences 114, no. 28 (2017): 7331–36. http://dx.doi.org/10.1073/pnas.1700597114.

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Aridification is often considered a major driver of long-term ecological change and hominin evolution in eastern Africa during the Plio-Pleistocene; however, this hypothesis remains inadequately tested owing to difficulties in reconstructing terrestrial paleoclimate. We present a revised aridity index for quantifying water deficit (WD) in terrestrial environments using tooth enamel δ18O values, and use this approach to address paleoaridity over the past 4.4 million years in eastern Africa. We find no long-term trend in WD, consistent with other terrestrial climate indicators in the Omo-Turkana

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Sui, Xue Min, Xu Zhang, and Guang Hui Han. "Design Range of Indoor Relative Humidity in Radiant Cooling Environment." Advanced Materials Research 243-249 (May 2011): 4905–8. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4905.

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Relative humidity is an important micro-climate parameter in radiant cooling environment. Based on the human thermal comfort model, this paper studied the effect on PMV index of relative humidity, and studied the relationship of low mean radiant temperature and relative humidity, drew the appropriate design range of indoor relative humidity for radiant cooling systems.The results show that high relative humidity can compensate for the impact on thermal comfort of low mean radiant temperature, on the premise of achieving the same thermal comfort requirements. However, because of the limited com

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POGAČAR, Tjaša, Ajda VALHER, Mateja ZALAR, Zalika ČREPINŠEK, and Lučka KAJFEŽ-BOGATAJ. "Priprava klimatskih podlag kot dodatnega kriterija za določanje območij z omejenimi možnostmi za kmetijsko dejavnost." Acta agriculturae Slovenica 107, no. 1 (2016): 229. http://dx.doi.org/10.14720/aas.2016.107.1.21.

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Climate factors that are proposed to determine agriculturally less favoured areas (LFA) in Slovenia were analyzed for the period 1981–2010. Following the instructions of European Commission prepared by Joint Research Centre (JRC) 30-years averages of low air temperatures criteria (the vegetation period duration and sums of effective air temperatures) and aridity criteria (aridity index <em>AI</em>) have to be calculated. Calculations were additionally done using Slovenian Environment Agency (ARSO) method, which is slightly different when determining temperature thresholds. Only hil

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