Monsoons are strongly connected to the oceans through exchanges of heat, water, and momentum, and to atmospheric radiative processes associated with clouds, water vapour and carbon dioxide. However, despite these intimate physical connections, the roles of (a) oceans and (b) radiative processes in the monsoon response to climate change are largely unknown and have not been systematically investigated. The objectives of this project are:
1. To transform our physical understanding of monsoon-ocean and monsoon-radiation coupling using novel idealised climate model simulations focused on key coupling processes including cloud and water vapour feedbacks, wind-driven Ekman transport and wind-induced surface heat exchange (WISHE).
2. To apply new insights into monsoon-ocean and monsoon-radiation interactions to narrow the large uncertainty in future monsoons projections from state-of-the-art CMIP6 climate models.
For Objective 1, you will perform novel climate simulations using the Community Earth System Model (CESM). These simulations will be designed to investigate how individual atmosphere-ocean and monsoon-radiation coupling processes affect monsoons and their response to climate change. For Objective 2, you will analyse monsoon rainfall and circulation dynamics in state-of-the-art climate simulations from the CMIP6 data archives, with the aim of narrowing the large uncertainty in future monsoon changes.