Spatial and temporal analysis of deep convection activity over Tibetan plateau and the Himalayan Mountain region.

We investigate the deep convection activity over the Himalayan Mountain (HM) and Tibetan Plateau (TP) using long-term lightning and precipitation data sets.  The observational data suggest that lightning activity during the months of May & June is greater in comparison with the rest of the year. Since lightning events are treated as a signature of deep convection, those periods can be classified as deep convective periods. In addition, Easter HM shows high deep convection activity during March-April and Western HM during September-October. The Southern TP faces maximum disturbance during June-August mainly during afternoon hours 12:00-16:00 Local Time (LT). Whereas over Eastern and Western HM region peak hours are between 22:00-04:00 LT and 15:00-20:00 LT, and Central HM peaks are between 14:00-19:00 LT. We further report the relation between changing planetary boundary layer (PBL) and water vapor (WV) transport during deep convection events at seasonal and diurnal scales over TP and HM.