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Proceedings Paper

Lidar measurements of sub-visible aerosol layers in the free troposphere at a tropical coastal station in Trivandrum, India
Author(s): Sangaipillai Veerabuthiran; Malladi Satyanarayana; Rajappan Sreeja; Bhargavan Presennakumar; Sivarama Pillai Muraleedharen Nair; Duggirala Ramakrishna Rao; Santhibhavan Vasudevan Pillai Mohankumar
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Paper Abstract

Lidar observations had been conducted to study the long-range transport of aerosol and their effect at tropical station, Trivandrum during the period of 2001-2003. The presence of aerosol layers was observed on many days below about 5 km during the above period. The monthly values of aerosol extinction coefficient profile showed the presence of aerosol layer in the height region up to about 5 km during the summer monsoon periods. However, during the Asian winter monsoon period the aerosol layers were observed in the altitude region between 0.6 and 3 km. The extinction values were high in the winter season and were typically found to be 3.4×10-4 m-1. The aerosol optical depth was calculated by integrating the extinction values in the aerosol layer region and it was found to be between 0.2 and 0.35. The plausible reasons for the formation of these layers were explained using the wind circulation pattern and air back trajectories.

Paper Details

Date Published: 12 December 2006
PDF: 10 pages
Proc. SPIE 6409, Lidar Remote Sensing for Environmental Monitoring VII, 64091Q (12 December 2006); doi: 10.1117/12.694528
Show Author Affiliations
Sangaipillai Veerabuthiran, Missile Facilities, Laser Science and Technology Ctr. (India)
Malladi Satyanarayana, ISRO Vikram Sarabhai Space Ctr. (India)
Rajappan Sreeja, ISRO Vikram Sarabhai Space Ctr. (India)
Bhargavan Presennakumar, ISRO Vikram Sarabhai Space Ctr. (India)
Sivarama Pillai Muraleedharen Nair, ISRO Vikram Sarabhai Space Ctr. (India)
Duggirala Ramakrishna Rao, ISRO Vikram Sarabhai Space Ctr. (India)
Santhibhavan Vasudevan Pillai Mohankumar, ISRO Vikram Sarabhai Space Ctr. (India)

Published in SPIE Proceedings Vol. 6409:
Lidar Remote Sensing for Environmental Monitoring VII
Upendra N. Singh; Toshikazu Itabe; D. Narayana Rao, Editor(s)

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