@article{fdi:010065146, title = {{D}rying of {I}ndian subcontinent by rapid {I}ndian {O}cean warming and a weakening land-sea thermal gradient}, author = {{R}oxy, {M}. {K}. and {R}itika, {K}. and {T}erray, {P}ascal and {M}urtugudde, {R}. and {A}shok, {K}. and {G}oswami, {B}. {N}.}, editor = {}, language = {{ENG}}, abstract = {{T}here are large uncertainties looming over the status and fate of the {S}outh {A}sian summer monsoon, with several studies debating whether the monsoon is weakening or strengthening in a changing climate. {O}ur analysis using multiple observed datasets demonstrates a significant weakening trend in summer rainfall during 1901-2012 over the central-east and northern regions of {I}ndia, along the {G}anges-{B}rahmaputra-{M}eghna basins and the {H}imalayan foothills, where agriculture is still largely rain-fed. {E}arlier studies have suggested an increase in moisture availability and land-sea thermal gradient in the tropics due to anthropogenic warming, favouring an increase in tropical rainfall. {H}ere we show that the land-sea thermal gradient over {S}outh {A}sia has been decreasing, due to rapid warming in the {I}ndian {O}cean and a relatively subdued warming over the subcontinent. {U}sing long-term observations and coupled model experiments, we provide compelling evidence that the enhanced {I}ndian {O}cean warming potentially weakens the land-sea thermal contrast, dampens the summer monsoon {H}adley circulation, and thereby reduces the rainfall over parts of {S}outh {A}sia.}, keywords = {{INDE} ; {OCEAN} {INDIEN}}, booktitle = {}, journal = {{N}ature {C}ommunications}, volume = {6}, numero = {}, pages = {art. 7423 [10 ]}, ISSN = {2041-1723}, year = {2015}, DOI = {10.1038/ncomms8423}, URL = {https://www.documentation.ird.fr/hor/fdi:010065146}, }