A prognostic model of cloud cover based on Satellite Data
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
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| Relation |
http://cir.csir4pi.in/326/
http://onlinelibrary.wiley.com/doi/10.1029/2003GL018329/pdf DOI: 10.1029/2003GL018329 |
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| Title |
A prognostic model of cloud cover based on Satellite Data
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| Creator |
Goswami, P
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| Subject |
Climate Modelling
Meteorology and Climatology |
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| Description |
Large uncertainties still remain about the mechanisms
of genesis and interaction of clouds in a large scale
environment. Through a semi-empirical dynamical model
using hourly data from TOGA-COARE IOP (130E–180E
and 15S–15N, 01.11.91–28.02.92), we show that the
convective activity leading to clouds is a self-regulating,
threshold process embedded in a large-scale environment.
The convective activity is prescribed through a of hourly
fractional cloud cover while the environmental forcings are
defined in terms large-scale moist state defined in terms of
the average brightness temperature. A prognostic model is
then developed for cloud cover as the dynamical variable. To
validate the model we integrate it with a given initial
condition from observed data. The model reproduces the
observed spatio-temporal structure of the cloud with a
remarkable degree of success. We identify and quantify two
thresholds for large-scale forcing for genesis and intensity of high clouds.
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| Publisher |
Wiley
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| Date |
2004-01
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| Type |
Article
PeerReviewed |
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| Format |
text
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| Language |
en
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| Rights |
—
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| Identifier |
http://cir.csir4pi.in/326/1/pg_grl_2004.pdf
Goswami, P (2004) A prognostic model of cloud cover based on Satellite Data. GEOPHYSICAL RESEARCH LETTERS, 31 (1). L01101. ISSN 1944-8007 |
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