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Altitudinal variation of surface aerosol with change in site: A comparative study

Jain, SL and Kulkarni, PS and Arya, BC and Kumar, A and Ghude, SD and Singh, P (2007) Altitudinal variation of surface aerosol with change in site: A comparative study. Indian Journal of Radio and Space Physics, 36 (6). pp. 571-575.

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he study of size distribution of atmospheric aerosols is an important tool in understanding and managing aerosol effects on health, visibility and climate. The measurements of surface aerosols, both mass-size distribution and mass concentration, were carried out in the campaign mode at Leh (34°09'N, 77°34'E, 3441 m asl), Hanle (32°47'N, 78°58'E, 4517 m asl) and Delhi (28°39'N, 77°13'E, 220 m asl) during July 2003 to examine their variation with altitudinal and anthropogenic activity. A 15 channel portable particle size aerosol spectrometer GRIMM was used for carrying out the experiment. The aerosol spectrometer is equipped with class 3-B laser as the light source and uses a light scattering technology for single particle counts in the range > 0.3 µm to > 20.0 µm. During the period of observation at all three sites, the pattern of total mass concentration was found to be influenced by supermicron range mass concentration. The higher values of aerosol mass concentration observed at Delhi as compared with those observed at Leh and Hanle on all the channels show a large amount of anthropogenic activity taking place around Delhi vis-à-vis the other two sites. It is further observed that the mass-size distribution changes with the change in altitude and anthropogenic activity

Item Type: Article
Additional Information: Copyright of this article belongs to NISCAIR
Uncontrolled Keywords: Surface aerosol;Mass-size distribution;Submicron range; Supermicron range;Mass concentration
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 06 Mar 2015 06:32
Last Modified: 06 Mar 2015 06:32

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