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Simulation of aerosol fields over South Asia using CHIMERE - part-I: spatio-temporal characteristics and heterogeneity

Srivastava, N and Satheesh, SK and Blond, Nadege and Moorthy, Krishna K (2016) Simulation of aerosol fields over South Asia using CHIMERE - part-I: spatio-temporal characteristics and heterogeneity. In: CURRENT SCIENCE, 111 (1). pp. 76-82.

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Official URL: http://dx.doi.org/10.18520/cs/v111/i1/76-82

Abstract

In order to understand the regional climate implications of aerosols over Indo-Gangetic Plains (IGP), a major Indo-US field experiment, Ganges Valley Aerosol Experiment (GVAX) was conducted during 2011-12. Atmospheric Radiation Measurement (ARM) mobile facility (AMF) was deployed at the northern Indo-Gangetic Plain over the high-altitude site, Manora Peak, Nainital (29 degrees 21'33.84 `' N, 79 degrees 27'29.27 `' E, 1980 m amsl) in Central Himalayas, for an year-round measurement of aerosols, clouds and other climate-relevant atmospheric parameters. One of the objectives of GVAX was examining the ability of models to simulate aerosols over Indian region and validate the simulations. In part-1 of this two-part paper, we examine use of the chemical transport model `CHIMERE' to simulate aerosol fields over Indian region (4-37.5 degrees N; 67-88.5 degrees E) for multiple years (2006, 2007 and 2008) by simulating the spatial and temporal distribution of PM10, BC mass concentrations and OC/BC ratios. It is seen that the model successfully captures the broad features of the regional distribution of aerosols, including the most conspicuous IGP hotspot and its seasonality.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the INDIAN ACAD SCIENCES, C V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
Keywords: Aerosols; black carbon; chemistry transport model; CHIMERE; GVAX
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Depositing User: Id for Latest eprints
Date Deposited: 24 Aug 2016 10:26
Last Modified: 24 Aug 2016 10:26
URI: http://eprints.iisc.ac.in/id/eprint/54398

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