Variability of radiatively forced diurnal cycle of intense convection in the tropical west pacific [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1996. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- pages 125-127 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Energy Research and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Strong differences occur in daytime versus nighttime (DVN) net radiative cooling in clear versus cloudy areas of the tropical atmosphere. Daytime average cooling is approximately -0.7°C/day, whereas nighttime net tropospheric cooling rates are about -1.5°C/day, an approximately two-to-one difference. The comparatively strong nocturnal cooling in clear areas gives rise to a diurnally varying vertical circulation and horizontal convergence cycle. Various manifestations of this cyclic process include the observed early morning heavy rainfall maxima over the tropical oceans. The radiatively driven DVN circulation appears to strongly modulate the resulting diurnal cycle of intense convection which creates the highest, coldest cloudiness over maritime tropical areas and is likely a fundamental mechanism governing both small and large scale dynamics over much of the tropical environment.
- Published through SciTech Connect., 04/01/1996., "conf-9503140--", "DE96010942", 5. atmospheric radiation measurement (ARM) science team meeting, San Diego, CA (United States), 19-23 Mar 1995., and Gray, W.M.; Thorson, W.B.; Sheaffer, J.D.
- Funding Information:
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