A model for the energy budget of the atmosphere - Comparison with data from the Earth Radiation Budget Experiment

Details A model for the energy budget of the atmosphere - Comparison with data from the Earth Radiation Budget Experiment A model for the energy budget of the atmosphere - Comparison with data from the Earth Radiation Budget Experiment

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40.1237m&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 9, p. 1237-1250.

Computer Science

5

Atmospheric Models, Earth Radiation Budget, Earth Radiation Budget Experiment, Albedo, Finite Difference Theory, Greenhouse Effect, Humidity, Infrared Radiation, Parameterization, Radiant Cooling, Radiative Heat Transfer, Sea Surface Temperature, Surface Temperature

Scientific paper

A radiative-convective model is developed and used to examine the sensitivity of clear-sky fluxes of IR radiation to changes in sea-surface temperature, atmospheric lapse rates, and relative humidity. The radiative model uses the correlated-k method and includes an improved treatment of the finite-difference approximation in the evaluation of the vertical flux integral. Absorption coefficients are calculated directly from spectroscopic data. Model results for radiative cooling rates agree with benchmark line-by-line calculations to better than 5 percent. Comparison with Earth Radiation Budget Experiment (ERBE) measurements indicates that a 6.5 K/km lapse-rate model would be inconsistent with fluxes observed at the top of the atmosphere. Agreement is improved significantly using a parameterization in which the static stability is specified empirically as a function of surface temperature. Comparison with measurements for higher temperatures suggests that significant increases in middle and upper tropospheric humidity may be associated with warmer sea surface temperatures.

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