Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China
Drought monitoring is useful to minimize the impact of drought on human production and the natural environment. Gravity Recovery and Climate Experiment (GRACE) satellites can directly capture terrestrial water storage anomalies (TWSA) in the large basin, which represents a new source of hydrological...
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doaj-1d5e95ab686548deb4117b1be98695212020-12-29T00:01:43ZengMDPI AGRemote Sensing2072-42922021-12-0113797910.3390/rs13010079Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest ChinaTingtao Wu0Wei Zheng1Wenjie Yin2Hanwei Zhang3School of Surveying and Landing Information Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaSchool of Surveying and Landing Information Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaSchool of Surveying and Landing Information Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaDrought monitoring is useful to minimize the impact of drought on human production and the natural environment. Gravity Recovery and Climate Experiment (GRACE) satellites can directly capture terrestrial water storage anomalies (TWSA) in the large basin, which represents a new source of hydrological information. In this study, the GRACE-based total storage deficit index (TSDI) is employed to investigate the temporal evolution and spatial distribution of drought in Southwest China from 2003 to 2016. The comparison results of TSDI with the standardized precipitation index (SPI), the standardized precipitation evapotranspiration index (SPEI), and the self-calibrating Palmer drought severity index (SC-PDSI) show that TSDI has significant consistency with them, which verifies the reliability of TSDI. The spatial distribution of TSDI was more consistent with the governmental drought reports than SC-PDSI in the most severe drought event from September 2009 to April 2010. Finally, the links between drought and climate indicators are investigated using the partial least square regression (PLSR) model. The results show that insufficient precipitation has the most significant impact on drought in Southwest China, followed by excessive evaporation. Although Southwest China is selected as a case study in this paper, the method can be applied in other regions as well.https://www.mdpi.com/2072-4292/13/1/79GRACEtotal storage deficit indexstandardized drought indicesthe partial least square regression model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tingtao Wu Wei Zheng Wenjie Yin Hanwei Zhang |
spellingShingle |
Tingtao Wu Wei Zheng Wenjie Yin Hanwei Zhang Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China Remote Sensing GRACE total storage deficit index standardized drought indices the partial least square regression model |
author_facet |
Tingtao Wu Wei Zheng Wenjie Yin Hanwei Zhang |
author_sort |
Tingtao Wu |
title |
Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China |
title_short |
Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China |
title_full |
Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China |
title_fullStr |
Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China |
title_full_unstemmed |
Spatiotemporal Characteristics of Drought and Driving Factors Based on the GRACE-Derived Total Storage Deficit Index: A Case Study in Southwest China |
title_sort |
spatiotemporal characteristics of drought and driving factors based on the grace-derived total storage deficit index: a case study in southwest china |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2021-12-01 |
description |
Drought monitoring is useful to minimize the impact of drought on human production and the natural environment. Gravity Recovery and Climate Experiment (GRACE) satellites can directly capture terrestrial water storage anomalies (TWSA) in the large basin, which represents a new source of hydrological information. In this study, the GRACE-based total storage deficit index (TSDI) is employed to investigate the temporal evolution and spatial distribution of drought in Southwest China from 2003 to 2016. The comparison results of TSDI with the standardized precipitation index (SPI), the standardized precipitation evapotranspiration index (SPEI), and the self-calibrating Palmer drought severity index (SC-PDSI) show that TSDI has significant consistency with them, which verifies the reliability of TSDI. The spatial distribution of TSDI was more consistent with the governmental drought reports than SC-PDSI in the most severe drought event from September 2009 to April 2010. Finally, the links between drought and climate indicators are investigated using the partial least square regression (PLSR) model. The results show that insufficient precipitation has the most significant impact on drought in Southwest China, followed by excessive evaporation. Although Southwest China is selected as a case study in this paper, the method can be applied in other regions as well. |
topic |
GRACE total storage deficit index standardized drought indices the partial least square regression model |
url |
https://www.mdpi.com/2072-4292/13/1/79 |
work_keys_str_mv |
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