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| Titel |
CloudSat observations of cloud-type distribution over the Indian summer monsoon region |
| VerfasserIn |
K. V. Subrahmanyam, K. K. Kumar |
| 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 ; 31, no. 7 ; Nr. 31, no. 7 (2013-07-03), S.1155-1162 |
| Datensatznummer |
250019059
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| Publikation (Nr.) |
 copernicus.org/angeo-31-1155-2013.pdf |
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| Zusammenfassung |
| The three-dimensional distribution of various cloud types over the Indian
summer monsoon (ISM) region using five years (2006–2010) of CloudSat
observations during June-July-August-September months is discussed for the
first time. As the radiative properties, latent heat released and
microphysical properties of clouds differ largely depending on the cloud
type, it becomes important to know what types of clouds occur over which
region. In this regard, the present analysis establishes the
three-dimensional distribution of frequency of occurrence of stratus (St),
stratocumulus (Sc), nimbostratus (Ns), cumulus (Cu), altocumulus (Ac),
altostratus (As), cirrus (Ci) and deep convective (DC) clouds over the ISM
region. The results show that the various cloud types preferentially occur
over some regions of the ISM, which are consistent during all the years of
observations. It is found that the DC clouds frequently occur over northeast
of Bay of Bengal (BoB), Ci clouds over a wide region of south
BoB–Indian peninsula–equatorial Indian Ocean, and Sc clouds over the north
Arabian Sea. Ac clouds preferentially occur over land, and a large amount of As
clouds are found over BoB. The occurrence of both St and Ns clouds over the
study region is much lower than all other cloud types.The interannual
variability of all these clouds including their vertical distribution is
discussed. It is envisaged that the present study opens up possibilities
to quantify the feedback of individual cloud type in the maintenance of the ISM
through radiative forcing and latent heat release. |
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