Atmospheric Dynamics

The South Asian summer monsoon is a climate phenomenon which causes intense rainfall in India and South-East Asia during the summer, with relatively dry conditions the rest of the year.  In this region, the rainfall from June through September accounts for approximately 80% of the total annual rainfall and the summer precipitation is of vital importance in agriculture.  Year to year variations in the strength and timing of the monsoon can lead to drought and flood conditions, with profound effects on society and  agricultural productivity.  Although the monsoon is a crucial element in the rapidly growing economies of South Asia, mechanisms controlling it are not well understood and predictive skills are limited.

The distinctive seasonal precipitation patterns of the monsoon are associated with a seasonal reversal in the winds and atmospheric circulation in this region.  In my current research I am using weather data and atmospheric models to investigate how variations in the strength and timing of the monsoon relate to variations in large scale atmospheric flows, both within the monsoon region and beyond it to remote and extratropical areas, in order to help us better understand the mechanisms controlling the South Asian monsoon.

Atmospheric Chemistry

My previous research projects have included atmospheric modelling of aerosols and air quality, as well remote sensing of stratospheric ozone.