气候变化领域集成服务门户(CCPortal): Propagation of Meteorological to Hydrological Droughts in India

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DOI	10.1029/2020JD033455
	Propagation of Meteorological to Hydrological Droughts in India
	Bhardwaj K.; Shah D.; Aadhar S.; Mishra V.
发表日期	2020
ISSN	2169897X
卷号	125 期号:22
英文摘要	Drought is among the costliest natural disasters that affect the economy, food and water security, and socioeconomic well-being of about 1.4 billion people in India. Despite the profound implications of droughts, the propagation of meteorological to hydrological droughts in India is not examined. Here, we use observations and simulations from a well-calibrated and evaluated Variable Infiltration Capacity (VIC) model to estimate drought propagation in India. Standardized Precipitation Index (SPI), Standardized Soil Moisture Index (SSMI), and Standardized Streamflow Index (SSI) were estimated for 223 catchments in India to represent meteorological, agricultural, and hydrological droughts, respectively. We estimated drought propagation time for these catchments located in 18 major Indian subcontinental river basins. Internal propagation of hydrological drought was estimated using optimal hydrological Instantaneous Development Speed (IDS) and Instantaneous Recovery Speed (IRS) from onset to the termination. Indus, Sabarmati, and Godavari river basins have higher propagation time of meteorological to hydrological droughts. The high (low) development rate of hydrological drought is followed by the high (low) recovery rate for most of the locations. We find significant influence of Seasonality Index (SI) and Base Flow Index (BFI) on propagation time of meteorological to hydrological droughts in the Indian subcontinental river basins. Overall, understanding of drought propagation, development/recovery speed, and their deriving factors can assist in the management and planning of water resources in India. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	drought; hydrological drought; India; meteorological drought; propagation
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185631
作者单位	Civil Engineering, Indian Institute of Technology (IIT) Gandhinagar, Gandhinagar, India; Earth Sciences, Indian Institute of Technology (IIT) Gandhinagar, Gandhinagar, India
推荐引用方式 GB/T 7714	Bhardwaj K.,Shah D.,Aadhar S.,et al. Propagation of Meteorological to Hydrological Droughts in India[J],2020,125(22).
APA	Bhardwaj K.,Shah D.,Aadhar S.,&Mishra V..(2020).Propagation of Meteorological to Hydrological Droughts in India.Journal of Geophysical Research: Atmospheres,125(22).
MLA	Bhardwaj K.,et al."Propagation of Meteorological to Hydrological Droughts in India".Journal of Geophysical Research: Atmospheres 125.22(2020).