High-resolution near real-time drought monitoring in South Asia

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dc.contributor.author Aadhar, Saran
dc.contributor.author Mishra, Vimal
dc.date.accessioned 2017-10-17T13:46:11Z
dc.date.available 2017-10-17T13:46:11Z
dc.date.issued 2017-10
dc.identifier.citation Aadhar, Saran and Mishra, Vimal, “High-resolution near real-time drought monitoring in South Asia”, Scientific Data, DOI: 10.1038/sdata.2017.145, vol. 4, Oct. 2017 en_US
dc.identifier.issn 2052-4463
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3187
dc.identifier.uri http://dx.doi.org/10.1038/sdata.2017.145
dc.description.abstract Drought in South Asia affect food and water security and pose challenges for millions of people. For policy-making, planning, and management of water resources at sub-basin or administrative levels, high-resolution datasets of precipitation and air temperature are required in near-real time. We develop a high-resolution (0.05°) bias-corrected precipitation and temperature data that can be used to monitor near real-time drought conditions over South Asia. Moreover, the dataset can be used to monitor climatic extremes (heat and cold waves, dry and wet anomalies) in South Asia. A distribution mapping method was applied to correct bias in precipitation and air temperature, which performed well compared to the other bias correction method based on linear scaling. Bias-corrected precipitation and temperature data were used to estimate Standardized precipitation index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI) to assess the historical and current drought conditions in South Asia. We evaluated drought severity and extent against the satellite-based Normalized Difference Vegetation Index (NDVI) anomalies and satellite-driven Drought Severity Index (DSI) at 0.05°. The bias-corrected high-resolution data can effectively capture observed drought conditions as shown by the satellite-based drought estimates. High resolution near real-time dataset can provide valuable information for decision-making at district and sub-basin levels. en_US
dc.description.statementofresponsibility by Saran Aadhar and Vimal Mishra
dc.description.uri http://dx.doi.org/10.1038/sdata.2017.145
dc.format.extent vol. 4
dc.language.iso en en_US
dc.publisher Nature Publishing Group en_US
dc.title High-resolution near real-time drought monitoring in South Asia en_US
dc.type Article en_US
dc.relation.journal Scientific Data

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