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| Titel |
Role of fine mode aerosols in modulating cloud properties over industrial locations in north India |
| VerfasserIn |
B. Abish, K. Mohanakumar |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 9 ; Nr. 29, no. 9 (2011-09-16), S.1605-1612 |
| Datensatznummer |
250017090
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| Publikation (Nr.) |
 copernicus.org/angeo-29-1605-2011.pdf |
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| Zusammenfassung |
| The influence of aerosols on cloud properties over North India which
includes the Indo-Gangetic Plain has been investigated for the years 2000 to
2010. During the years 2004, 2009 and 2010 there has been an abrupt increase
in fine mode aerosol optical depth (AOD) inducing a sharp decline in cloud
effective radius (CER) in the month of January. The following monsoon during
these years was a failure in the region considered for the study. In the
year 2010, a highest AOD value of 0.35 was recorded in the month of January.
In accordance with the aerosol indirect effect, this large increase in AOD
resulted in a significant reduction in CER. The monsoon season in that year
was deficient in the study region even though the rest of the country
received above normal rainfall. For the years when CER diminished below 12
microns in the month of May, a delay in the advancement of monsoon towards
North India is noted even after a normal or early onset in southern
peninsula. Meanwhile, a rapid progression took place when it was 12 microns
or above. During non-monsoon months an inverse relationship existed between
cloud effective radius and liquid water path and a strong positive
association occurred in the monsoon months. Present analysis suggests that
the excessive aerosol loading and the associated aerosol indirect effects in
the months prior to the monsoon season has an effect on the propagation and
onset of the south west monsoon over the region. |
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