- Dona Paula, Goa, India.
- +91-0832- 2450327
- iiosc2020[at]nio[dot]org
Abstract Submission No. | ABS-2022-08-0250 |
Title of Abstract | Investigation of black carbon over Indian Ocean in a regional climate model |
Authors | Rohit Srivastava* |
Organisation | NCPOR |
Address | Headland Sada SOUTH GOA, GOA, India Pincode: 403802 Mobile: 9274584406 E-mail: rohits@ncpor.res.in |
Country | India |
Presentation | Oral |
Abstract | Atmospheric aerosols scatter and absorb incoming solar and outgoing terrestrial radiation and alter the Earth-Atmosphere radiation balance. They influence the forcing indirectly by altering cloud optical properties, cloud water content, and lifetime. The Indian Ocean provides a unique natural laboratory to study the role of anthropogenic aerosols in climate change. This is the region where an intense source of anthropogenic aerosols exhibits juxtaposed to the pristine air of the Southern Hemisphere. The polluted and pristine air are connected by a cross-equatorial monsoonal flow into the Intertropical Convergence Zone (ITCZ). Weather Research and Forecasting with Chemistry (WRF-CHEM) model was utilized to simulate the spatial, temporal and vertical variability of anthropogenic aerosols over the Indian Ocean region. The model simulation was performed at a horizontal grid resolution of 60 km x 60 km. The 6-h initial and lateral boundary conditions for the meteorological fields from National Centre for Environmental Predictions, Final Analysis (NCEP/FNL) were utilized in the simulations. The chemical mechanism for gas-phase chemistry in WRF-CHEM simulations was provided from MOZART4 and for aerosol process based on Goddard Chemistry Aerosol Radiation and Transport (GOCART) bulk aerosol scheme (MOZCART). The measured black carbon mass are compared with the simulated concentration. The detailed results on spatial, temporal and vertical variations of black carbon over the Indian Ocean region will be presented and discussed. |