%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Prakash, S.
%A Gairola, R. M.
%A Papa, Fabrice
%A Mitra, A. K.
%T An assessment of terrestrial water storage, rainfall and river discharge over Northern India from satellite data
%D 2014
%L fdi:010063512
%G ENG
%J Current Science
%@ 0011-3891
%K Earth-observation satellites ; rainfall ; river discharge ; terrestrial ; water storage
%K INDE
%M ISI:000345108200029
%N 9
%P 1582-1586
%U https://www.documentation.ird.fr/hor/fdi:010063512
%> https://www.documentation.ird.fr/intranet/publi/depot/2017-11-29/010062735.pdf
%V 107
%W Horizon (IRD)
%X Terrestrial water storage (TWS) plays a key role in the global water cycle and is highly influenced by climate variability and human activities. In this study, monthly TWS, rainfall and Ganga-Brahmaputra river discharge (GBRD) are analysed over India for the period of 2003-12 using remote sensing satellite data. The spatial pattern of mean TWS shows a decrease over a large and populous region of Northern India comprising the foothills of the Himalayas, the Indo-Gangetic Plains and North East India. Over this region, the mean monthly TWS exhibits a pronounced seasonal cycle and a large interannual variability, highly correlated with rainfall and GBRD variations (r > 0.8) with a lag time of 2 months and 1 month respectively. The time series of monthly TWS shows a consistent and statistically significant decrease of about 1 cm year(-1) over Northern India, which is not associated with changes in rainfall and GBRD. This recent change in TWS suggests a possible impact of rapid industrialization, urbanization and increase in population on land water resources. Our analysis highlights the potential of the Earth-observation satellite data for hydrological applications.
%$ 062 ; 126