A
A. Jayakumar
Researcher at National Centre for Medium Range Weather Forecasting
Publications - 34
Citations - 450
A. Jayakumar is an academic researcher from National Centre for Medium Range Weather Forecasting. The author has contributed to research in topics: Monsoon & Precipitation. The author has an hindex of 9, co-authored 28 publications receiving 343 citations. Previous affiliations of A. Jayakumar include Met Office & Indian Institute of Tropical Meteorology.
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Journal ArticleDOI
Processes of 30-90 days sea surface temperature variability in the northern Indian Ocean during boreal summer
Jérôme Vialard,A. Jayakumar,Chellappan Gnanaseelan,Matthieu Lengaigne,Debasis Sengupta,Bhupendra Nath Goswami +5 more
TL;DR: In this paper, the authors investigate mechanisms of the Sea Surface Temperature (SST) signature of this atmospheric variability, using a combination of observational datasets and Ocean General Circulation Model sensitivity experiments.
Journal ArticleDOI
Processes controlling the surface temperature signature of the Madden–Julian Oscillation in the thermocline ridge of the Indian Ocean
A. Jayakumar,Jérôme Vialard,Jérôme Vialard,Matthieu Lengaigne,Matthieu Lengaigne,Chellappan Gnanaseelan,Julian P. McCreary,B. Praveen Kumar +7 more
TL;DR: In this paper, the authors used observations and ocean general circulation model (OGCM) experiments to quantify these two effects over the 1997-2006 period, and found that wind stress contributed on average only about 20% of the intraseasonal SST variability (averaged over the TRIO region), while heat fluxes contributed about 70%, with forcing by shortwave radiation dominating the other flux components (25%).
Journal ArticleDOI
Interaction of convective organization with monsoon precipitation, atmosphere, surface and sea: The 2016 INCOMPASS field campaign in India
Andrew G. Turner,G. S. Bhat,Gill Martin,Douglas J. Parker,Christopher M. Taylor,Ashis K. Mitra,S. N. Tripathi,Sean Milton,E. N. Rajagopal,Jonathan Evans,Ross Morrison,Sandeep Pattnaik,Muddu Sekhar,B. K. Bhattacharya,Ranju Madan,Mrudula Govindankutty,Jennifer K. Fletcher,Peter Willetts,Arathy Menon,John H. Marsham,Kieran M. R. Hunt,Tirthankar Chakraborty,Geet George,Mithun Krishnan,Chandan Sarangi,Danijel Belušić,Luis Garcia-Carreras,M. E. Brooks,M. E. Brooks,Stuart Webster,Jennifer Brooke,Cathryn Fox,R. C. Harlow,Justin M. Langridge,A. Jayakumar,S. J. Böing,Oliver Halliday,J. Bowles,J. Kent,Debbie O'Sullivan,A. Wilson,C. Woods,S. M. Rogers,R. Smout-Day,D. Tiddeman,Dawood Desai,Rahul Nigam,Rahul Nigam,S. Paleri,A. Sattar,M. Smith,D. Anderson,S. Bauguitte,R. Carling,C. Chan,S. Devereau,G. Gratton,D. MacLeod,G. Nott,M. Pickering,H. C. Price,S. Rastall,C. Reed,Jamie Trembath,A. Woolley,Ambrogio Volonté,B. New +66 more
TL;DR: The INCOMPASS field campaign combines airborne and ground measurements of the 2016 Indian monsoon, towards the ultimate goal of better predicting monsoon rainfall as discussed by the authors. But the lack of detailed observations prevents thorough understanding of the monsoon circulation and its interaction with the land surface: a process governed by boundary layer and convective cloud dynamics.
Journal ArticleDOI
A Pathway Connecting the Monsoonal Heating to the Rapid Arctic Ice Melt
TL;DR: In this paper, the authors provided a monsoonal link to the rapid Arctic ice melt, which is shown from the passage of a vertical c... through the monsoon belt toward central Asia.
Journal ArticleDOI
Anomalous intraseasonal events in the thermocline ridge region of Southern Tropical Indian Ocean and their regional impacts
TL;DR: In this paper, the authors explored the mechanisms responsible for the strong intraseasonal cooling events in the Thermocline Ridge region of the southwestern Indian Ocean using an Ocean General Circulation Model and satellite observations.