Results 11 to 20 of about 2,008 (184)

Use of the Standardized Precipitation Evapotranspiration Index (SPEI) to Characterize the Drying Trend in Southwest China from 1982–2012

open access: yesRemote Sensing, 2015
In this study, the Standardized Precipitation Evaporation Index (SPEI) was applied to characterize the drought conditions in Southwest China from 1982–2012.
Xing Li   +4 more
doaj   +3 more sources

Determining Rainfall Seasons in Iraq Using the Standardized Precipitation Index (SPI)

open access: yesمجلة كلية التربية للبنات
Drought is a significant challenge faced by Iraq and many countries around the world. Insufficient rainfall over extended periods can have adverse effects on agriculture, water resources, and the environment in general. This research aims to utilize the
Oras Ghani Abdul Hussein
doaj   +2 more sources

Analysis of Long-Term Variations of Drought Characteristics Using Standardized Precipitation Index over Zambia

open access: yesAtmosphere, 2020
This study examines long-term spatial and temporal trends of drought characteristics based on the Standardized Precipitation Index at three different time scales (3, 6, and 12 months) over Zambia from 1981 to 2017.
Bathsheba Musonda   +3 more
doaj   +3 more sources

Multi-site Modeling and Simulation of the Standardized Precipitation Index (SPI) in Jordan

open access: yesJournal of Hydrology: Regional Studies, 2017
Study region: Five rainfall stations located in the north west mountain region in Jordan. Study focus: In this study, monthly precipitation data is analyzed using the Standardized Precipitation Index (SPI) at time scale of 12 months (SPI-12).
Nidhal Saada, Ali Abu-Romman
doaj   +2 more sources

COMBINATION OF METEOROLOGICAL INDICES AND SATELLITE DATA FOR DROUGHT MONITORING IN TWO DIFFERENT ENVIRONMENTS IN IRAN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
The main problem using meteorological drought indices include inappropriate distribution of meteorological stations. Satellite data have reliable spatial and temporal resolution and provide valuable information used in many different applications.
M. Behifar   +3 more
doaj   +1 more source

Hydrological Drought Assessment in a Small Lowland Catchment in Croatia

open access: yesHydrology, 2022
Hydrological drought is critical from both water management and ecological perspectives. Depending on its hydrological and physical features, the resilience level of a catchment to groundwater drought can differ from that of meteorological drought.
Tamara Brleković, Lidija Tadić
doaj   +1 more source

USING GIS TOOL FOR PRESENTING SPATIAL DISTRIBUTION OF DROUGHT

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2020
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 ...
Milan Gocić   +3 more
doaj   +1 more source

Precipitation thresholds for drought recognition: a further use of the standardized precipitation index, SPI [PDF]

open access: yesWIT Transactions on Ecology and the Environment, 2013
Most of the methods used to analyse drought episodes include drought indices associated with quantitative scales and which are based upon instrumental variables, with particular emphasis for precipitation. Among such indices, one of the most common indices, if not the most widely used, is the standardized precipitation index (SPI), which assigns a ...
J. F. Santos   +4 more
openaire   +1 more source

Predicting Standardized Streamflow index for hydrological drought using machine learning models

open access: yesEngineering Applications of Computational Fluid Mechanics, 2020
Hydrological droughts are characterized based on their duration, severity, and magnitude. Among the most critical factors, precipitation, evapotranspiration, and runoff  are essential in modeling the droughts. In this study, three indices of drought, i.e.
Shahabbodin Shamshirband   +9 more
doaj   +1 more source

Spatio-temporal drought assessment and comparison of drought indices under climatic variations in drought-prone areas of Pakistan

open access: yesJournal of Water and Climate Change, 2023
Climatic variations cause droughts which badly affect the environment. The study focused on monitoring droughts to aid decision-making and mitigate their negative impacts on water availability for agriculture and livelihoods in the face of increasing ...
Muhammad Bilal Ahmad   +4 more
doaj   +1 more source

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