Accession Number : AD0718282

Title :   Hydrodynamic (Numerical) Short-Range Weather Forecasting,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Kibel,I. A.

Report Date : 07 DEC 1970

Pagination or Media Count : 31

Abstract : Early models for weather forecasting are reviewed, including adiabatic, barotropic, and baroclinic (quasi-geostrophic). Precipitation prediction and nonadiabatic effects are discussed, and full equations for prediction are provided. Soviet scientists have established a new problem in hydrodynamic short-range weather forecasting, more difficult than any that has preceded it, having to do with local prediction. Heretofore, comparisons have been made with synoptic methods, but the science has reached such a state now where only hydrodynamics may yield a proper solution. There are actually no synoptic methods for forecasting the spottiness of precipitation over cities or any other locality, no methods for local forecasting in mountains. One can hardly restrict himself to quasi-statistical models, to say nothing of quasi-geostrophic models. It is first necessary to have full hydrodynamic equations, with consideration of vertical accelerations. For adequate short-range work, characteristic distances will be 1 or 2 km rather than the 1000 km of previous forecasting. (Author)

Descriptors :   (*WEATHER FORECASTING, MATHEMATICAL MODELS), ATMOSPHERIC PRECIPITATION, MATHEMATICAL PREDICTION, HYDRODYNAMICS, MOUNTAINS, URBAN AREAS, DIGITAL COMPUTERS, DATA PROCESSING, USSR

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE