干旱区生态环境知识资源中心(Arid): Agricultural drought early warning from geostationary meteorological satellites: concept and demonstration over semi-arid tract in India

Arid

DOI	10.1007/s10661-020-08272-8
	Agricultural drought early warning from geostationary meteorological satellites: concept and demonstration over semi-arid tract in India
	Vyas, Swapnil S.; Bhattacharya, Bimal K.
通讯作者	Vyas, SS
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2020
卷号	192 期号:5
英文摘要	Remote sensing data from Indian geostationary satellites (Kalapana-1, INSAT 3A) were used for the first time for early warning of agricultural drought and forewarning of crop vigour. An Early warning indicator (EWI) was developed from operational product of rainfall and reference evapotranspiration from observations of Kalpana-1 very high resolution radiometer (VHRR). The effectiveness of EWI was evaluated for the two drought years (2009 and 2012). The positive correlation (r = 0.66-0.68 for 2009 and r = 0.64-0.70 for 2012) between the EWI in the month of June-July and standardized precipitation index-1 (SPI-1) averaged over administrative unit (called district) indicates that EWI can be used successfully for drought early warning. Lag-response behaviour between EWI and crop vigour in terms of normalized difference vegetation index (NDVI) and LAI (leaf area index) over cropland was studied. Systematic patterns emerged for 30 days lag period between negative EWI and NDVI at both grid-scale (0.25 degrees) and at district level. Linear relations were found between 10-day EWI and NDVI or LAI at 30 days lag during June-July period. Linear models were developed to forewarn crop vigour which was validated with realized NDVI from INSAT 3A charge-coupled device (CCD) observations within 95% accuracy. The EWI is recommended as potential indicator for early-season agricultural drought assessment and can be used for sub-district scale with finer scale rainfall and evaporation products from advanced next-generation geostationary meteorological satellites.
英文关键词	Early season agricultural drought Warning Geostationary satellite Remote sensing Semi-arid tract (SAT)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000529907300005
WOS关键词	MONITORING DROUGHT ; VEGETATION ; INDEX ; CLIMATE ; STRESS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324387
作者单位	[Vyas, Swapnil S.] Univ Pune, Dept Geog Geoinformat, Pune 41107, Maharashtra, India; [Bhattacharya, Bimal K.] ISRO, Agr & Land Ecosyst Div AED, Space Applicat Ctr, Ahmadabad 380015, Gujarat, India
推荐引用方式 GB/T 7714	Vyas, Swapnil S.,Bhattacharya, Bimal K.. Agricultural drought early warning from geostationary meteorological satellites: concept and demonstration over semi-arid tract in India[J],2020,192(5).
APA	Vyas, Swapnil S.,&Bhattacharya, Bimal K..(2020).Agricultural drought early warning from geostationary meteorological satellites: concept and demonstration over semi-arid tract in India.ENVIRONMENTAL MONITORING AND ASSESSMENT,192(5).
MLA	Vyas, Swapnil S.,et al."Agricultural drought early warning from geostationary meteorological satellites: concept and demonstration over semi-arid tract in India".ENVIRONMENTAL MONITORING AND ASSESSMENT 192.5(2020).