NUMERICAL STUDIES OF PLANETARY CIRCULATIONS IN A MODEL ATMOSPHERE.
Abstract
The evolution of general circulation patterns has been studied on a beta-plane, by means of two-level quasi-geostrophic models, including diabatic heat sources and friction. In the first experiment the influx of heat per unit column was made proportional to the temperature difference at the ocean-air interface, and to the geostrophic wind speed at this level. The factor of proportionality was independent of the sign of the temperature difference. In the second experiment its value was reduced by a factor of 10 whenever the air temperature exceeded the ocean temperature. In the third experiment a humidity distribution, evaporation, precipitation and release of latent heat were introduced. The best results were obtained in the third experiment, in which a well-defined 'index cycle' with a period of about 13 days occurred. Integrations were performed by means of a model without diabatic heat sources or surface friction, with initial easterly and initial westerly flow. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1967
- Accession Number
- AD0668540
Entities
People
- A. Huss
Organizations
- Hebrew University of Jerusalem