Parametrización de la radiación en modelos de circulación general de la atmosfera
Keywords:
circulación general de la atmósfera, temperatura, radiaciónAbstract
The results of including the physical processes of solar and terrestrial radiation in an hemispheric five level general circulation model of the atmosphere are shown in the present paper. The analysis was limited to the temperature fields resulting after a five days integration of the model, but it is known that the radiation affects others fields like surface pressure or a - level geopotential, and, for this reason, the air velocity. Several experiments including or not the radiation and the diffusion of temperature and velocity were developed. The mean effects of radiation and diffusion are not constant with height The 0 levels 0.1 and 0.9 are cooled by radiation and wanned by diffusion while in the others levels the opposite occurs. The biggest heating and cooling rates obtained were registered at o = 0.3 with values of 1.2° / day and -0.1° / day. This results must be taken in a qualitative way, because the model could only be integrated during five days and the incident radiation is the corresponding to the local noon.
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References
Katayama, A.,1972: A simplified scheme for computing radiative transfer in the troposphere; Technical Report N 6, University of California, Los Angeles.
Manabe, S. y Strickler, R., 1964: On the thermal equilibrium of the atmosphere with a convective adjustment; Journal of Atmospheric Sciences, 21, 361-385.
Núñez, M., 1980: Simulación numérica del flujo atmosférico sobre Sudamérica, usando un modelo de cinco niveles en ecuaciones primi- tivas, INCYTH.
Nuñez, M. y Barreira, S., 1985: Simulación de posibles cambios en estados climáticos de la atmósfera, mediante la utilización de un modelo de equilibrio radiativo; METEOROLOGICA, 5, N° 1.
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