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Proceedings Paper

Semi-diurnal variation of surface rainfall studied from global cloud-system resolving model and satellite observations
Author(s): T. Inoue; K. Rajendran; M. Satoh; H. Miura; J. Schmetz
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Paper Abstract

We studied the semi-diurnal variation of surface rainfall over southern Africa and the Amazon simulated by a global cloud system resolving model (Nonhydrostatic ICosahedral Atmospheric Model; NICAM) under realistic conditions with land-sea contrast. This semi-diurnal variation was found to be consistent with the Tropical rainfall Measuring Mission (TRMM) and Meteosat-8 observations. The timing of the primary afternoon rainfall peak by the NICAM coincides with TRMM/PR primary afternoon peak, and the secondary early morning peak by the NICAM simulation agree with the TRMM/PR observations within two hours. Mean size of deep convection (DC), defined by 213K of the Meteosat-8 infrared data shows semi-diurnal variation, although the number of DC show diurnal variation with coincident peak with TRMM/PR primary peak. The semi-diurnal variation of the mean size of DC and number of DC is simulated with small secondary peak over southern Africa by NICAM, whose DC is defined by OLR smaller than 112 W m-2 (corresponding to 213 K in cumulative frequency).

Paper Details

Date Published: 8 November 2012
PDF: 9 pages
Proc. SPIE 8529, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions IV, 85290K (8 November 2012); doi: 10.1117/12.977609
Show Author Affiliations
T. Inoue, The Univ. of Tokyo (Japan)
K. Rajendran, C-MMACS (India)
M. Satoh, The Univ. of Tokyo (Japan)
Japan Agency for Marine-Earth Science and Technology (Japan)
H. Miura, The Univ. of Tokyo (Japan)
J. Schmetz, EUMETSAT (Germany)

Published in SPIE Proceedings Vol. 8529:
Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions IV
Michio Kawamiya; Tiruvalam N. Krishnamurti; Shamil Maksyutov, Editor(s)

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