Research

Earth, Atmosphere & Environment Sciences

Title :

Climate sensitivity to anthropogenic aerosol loading over western India

Area of research :

Earth, Atmosphere & Environment Sciences

Principal Investigator :

Dr. Amit Sharma, Indian Institute Of Technology Jodhpur (IITJ), Rajasthan

Timeline Start Year :

2022

Timeline End Year :

2024

Contact info :

Equipments :

Details

Executive Summary :

The western Indian region is distinctive as it receives significant contribution from both natural and anthropogenic sources of pollution. Besides local anthropogenic sources, the region also receives pollutants transported from the heavily polluted Indo-Gangetic Plain (IGP) specially in the winter season. The region has also been experiencing significantly changing climatic trends. Despite of degrading air quality and changing climate, the region remains relatively unexplored for the linkages between the two through aerosol direct and indirect effects. Considering the increase in frequency and intensity of extreme events, e.g. – heatwaves, and the water scarcity conditions in this region it is even more important to examine the sensitivity of climate over western India to anthropogenic aerosol loading over western India and also over the IGP. Such a sensitivity analysis is possible by conducting high resolution regional simulations through chemistry-climate models. Therefore, it is proposed here to use a chemistry-climate model (WRF-Chem) over a domain covering western India along with western part of the IGP to achieve the objectives. Anthropogenic emission input to the model will be represented by a recent emission inventory. The setup will be extensively evaluated for meteorological and air quality parameters against measurement data from ground based instruments and satellites. The results from sensitivity simulations will enhance the understanding of aerosol-climate interactions over western India. This may also be helpful in formulating mitigation and adaptation strategies related to climate change over this region.

Total Budget (INR):

23,33,056

Organizations involved