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Unusual aerosol characteristics at Challakere in Karnataka

Satheesh, SK and Moorthy, Krishna K and Babu, Suresh S and Srinivasan, J (2013) Unusual aerosol characteristics at Challakere in Karnataka. In: CURRENT SCIENCE, 104 (5). pp. 615-621.

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Official URL: http://www.currentscience.ac.in/Volumes/104/05/061...


During a series of measurements, simultaneous measurements were made of spectral aerosol optical depths (AOD), black carbon (BC) mass concentration, total and size segregated composite aerosol mass concentrations at the second campus of Indian Institute of Science (IISc), Challakere, Karnataka. Surprisingly, most of the aerosol mass is found in the submicron size range, which is unusual for a dry region. Unexpectedly large enhancement in BC aerosol concentration was observed during the morning hours (6-8 a.m.), both during summer and winter, which is mysterious and hence requires further study. However, BC mass fraction, which is one of the most important climate-relevant parameters was 3.3% of total aerosol mass, implying a significantly low aerosol-induced absorption of solar radiation and hence consequent atmospheric warming. Based on our initial measurements as well as 11 years of satellite data analysis, we conclude that this location is best suited for establishing a climate observatory.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the INDIAN ACAD SCIENCES, INDIA.
Keywords: Aerosols; climate change; clouds; radiation
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited: 26 Apr 2013 10:58
Last Modified: 26 Apr 2013 10:58
URI: http://eprints.iisc.ac.in/id/eprint/46463

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