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Aerosol modulation of ultraviolet radiation dose over four metro cities in india

Panicker, AS and Pandithurai, G and Beig, G and Kim, D and Lee, DI (2014) Aerosol modulation of ultraviolet radiation dose over four metro cities in india. Advances in Meteorology, 2014.

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Abstract

This paper discusses the influence of aerosols on UV erythemal dose over four metro cities in India. Tropospheric Emission Monitoring Internet Service (TEMIS), archived UV-index (UV-I), and UV daily erythemal dose obtained from SCIAMACHY satellite were used in this study during June 2004 and May 2005 periods covering four important Indian seasons. UV-Index (UV-I), an important parameter representing UV risk, was found to be in the high to extreme range in Chennai (8.1 to 15.33), moderate to extreme range in Mumbai and Kolkata (5 to 16.5), and low to extreme over Delhi (3 to 15). Average UV erythemal dose showed seasonal variation from 5.9 to 6.3 KJm-2 during summer, 2.9 to 4.4 KJm-2 during postmonsoon, 3 to 4.5 KJm-2 during winter, and 5.1 to 6.19 KJm-2 during premonsoon seasons over the four cities. To estimate the influence of aerosols on reducing UV dose, UV aerosol radiative forcing and forcing efficiency were estimated over the sites. The average aerosol forcing efficiency was found to be from - 1.38 ± 0.33 to - 3.01 ± 0.28 KJm-2 AOD-1 on different seasons. The study suggests that aerosols can reduce the incoming UV radiation dose by 30-60 during different seasons. © 2014 A. S. Panicker et al.

Item Type: Article
Additional Information: Copyright © 2014 A. S. Panicker et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 04 Dec 2014 11:24
Last Modified: 04 Dec 2014 11:24
URI: http://moeseprints.incois.gov.in/id/eprint/909

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