Impact of Arabian Sea pollutions on the Bay of Bengal winter monsoon rains

T. N. Krishnamurti; Arindam Chakraborty; Andrew Martin; William K. Lau; Yogesh Sud; Gregory Walker

doi:10.1117/12.806393

3 December 2008 Impact of Arabian Sea pollutions on the Bay of Bengal winter monsoon rains

T. N. Krishnamurti, Arindam Chakraborty, Andrew Martin, William K. Lau, Yogesh Sud, Gregory Walker

Proceedings Volume 7148, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions II; 71480D (2008) https://doi.org/10.1117/12.806393
Event: SPIE Asia-Pacific Remote Sensing, 2008, Noumea, New Caledonia

Abstract

Accumulation of pollution over the southern Arabian Sea has been documented in numerous studies that followed the INDOEX field project of 1992. In this paper we show several examples of this feature from the MODIS/CALIPSO data sets. We identify this feature as the Bombay Plume that makes its way into the Arabian Sea from the west coast of India. A second part of this work is on the modeling of the impacts of pollutions. For this purpose we use a NASA Goddard Earth Observing System (GEOS) model to carry out many comparative forecast experiments that include the pollution based on MODIS and control runs that utilize climatological estimates of pollutions. The model includes both the direct and indirect effects of aerosols. We noted that: a) The Arabian Sea experience above normal rain during these periods for the MODIS experiments as compared to the control. b) The most interesting feature in these results is the documentation of a divergent outflow center, in the upper troposphere, over regions of the Arabian Sea pollutions when tropospheric aerosol heating is noted. c) An important related feature is a compensating downward lobe with a divergent inflow center over the Bay of Bengal. d) The presence of this downward lobe over the Bay of Bengal shows a reduction of winter monsoon rains over the south-east coast of India. e) We also show observational evidence of reduced winter monsoon rains over the south-east coast of India during MODIS pollution events from raingauge based estimates.

Citation Download Citation

T. N. Krishnamurti, Arindam Chakraborty, Andrew Martin, William K. Lau, Yogesh Sud, and Gregory Walker "Impact of Arabian Sea pollutions on the Bay of Bengal winter monsoon rains", Proc. SPIE 7148, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions II, 71480D (3 December 2008); https://doi.org/10.1117/12.806393

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Aerosols

Pollution

Meteorology

MODIS

Atmospheric modeling

Climatology

Atmospheric particles

Show All Keywords

Keywords/Phrases

Search In:

Publication Years