Mid-winter Stratospheric Warming Effects on Tropical Convection over the Indian Sector: Case Studies

The present study investigates the impact of northern mid-winter major stratospheric warming on tropical convection over Indian region by examining five Mid-winter Major Stratospheric Warming (MSW) events 2003/04, 2005/06, 2008/09, 2012/13, and 2018/19. dynamical variables like temperature, wind components, Outgoing Longwave Radiation are utilized from ECMWF ERA-Interim Reanalysis NOAA site. Eliassen Palm (E-P) flux is used to visualize upward equator-ward propagation extratropical Planetary Waves (PWs) lower atmosphere their reach region. dominance PW forcing high low latitudes seen in all cases. Further, transfer energy modifies pattern author found depleted latitude band -15-20oN for MSW 2003/04 2018/19, with frequent changes during 2012/13 2005/06. On other hand, 2008/09 show enhanced entire 20oS-20oN. This work suggests that modification OLR depends energy, onset time, peak wind-reversed state MSW.