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Seasonal variability of aerosol optical depth over Indian subcontinent

By:
, , , and
DOI: 10.1109/AMTRSI.2005.1469835

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Abstract

Ganga basin extends 2000 km E-W and about 400 km N-S and is bounded by Himalayas in the north. This basin is unequivocally found to be affected by high aerosols optical depth (AOD) (>0.6) throughout the year. Himalayas restricts movement of aerosols toward north and as a result dynamic nature of aerosol is seen over the Ganga basin. High AOD in this region has detrimental effects on health of more than 460 million people living in this part of India besides adversely affecting clouds formation, monsoonal rainfall pattern and Normalized Difference Vegetation Index (NDVI). Severe drought events (year 2002) in Ganga basin and unexpected failure of monsoon several times, occurred in different parts of Indian subcontinent. Significant rise in AOD (18.7%) over the central part of basin (Kanpur region) have been found to cause substantial decrease in NDVI (8.1%) since 2000. A negative relationship is observed between AOD and NDVI, magnitude of which differs from region to region. Efforts have been made to determine general distribution of AOD and its dominant departure in recent years spatially using Moderate Resolution Imaging Spectroradiometer (MODIS) data. The seasonal changes in aerosol optical depth over the Indo-Gangetic basin is found to very significant as a result of the increasing dust storm events in recent years. ?? 2005 IEEE.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Seasonal variability of aerosol optical depth over Indian subcontinent
ISBN:
0780391187; 9780780391185
DOI:
10.1109/AMTRSI.2005.1469835
Volume
2005
Year Published:
2005
Language:
English
Larger Work Title:
Proceedings of the Third International Workshop on the Analysis of Multi-Temporal Remote Sensing Images 2005
First page:
35
Last page:
38
Number of Pages:
4
Conference Title:
3rd International Workshop on the Analysis of Multi-Temporal Remote Sensing Images 2005
Conference Location:
Biloxi, MS
Conference Date:
16 May 2005 through 18 May 2005