Numerical simulations of mesoscale precipitation systems. Final progress report, 1 April-30 June 1981

Technical Report · Wed May 12 00:00:00 EDT 1982

DOI:https://doi.org/10.2172/5306154· OSTI ID:5306154

Dingle, A. N.

A numerical model designed for the study of mesoscale weather phenomena is presented. It is a three-dimensional, time-dependent model based upon a mesoscale primitive-equation system, and it includes parameterizations of cloud and precipitation processes, boundary-layer transfers, and ground surface energy and moisture budgets. This model was used to simulate the lake-effect convergence over and in the lee of Lake Michigan in late fall and early winter. The lake-effect convergence is created in advected cold air as it moves first from cold land to the warm constant-temperature lake surface, and then on to cold land. A numerical experiment with a prevailing northwesterly wind is conducted for a period of twelve hours. Two local maxima of the total precipitation are observed along the eastern shore of Lake Michigan. The results in this hypothetical case correspond quite well to the observed precipitation produced by a real event in which the hypothetical conditions are approximately fulfilled.

• Research Organization: Michigan Univ., Ann Arbor (USA). Dept. of Atmospheric and Oceanic Science
• DOE Contract Number: AC02-76EV01407
• OSTI ID: 5306154
• Report Number(s): DOE/EV/01407-T1; ON: DE82016235
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ATMOSPHERIC PRECIPITATIONS
MATHEMATICAL MODELS
MONITORING
WEATHER
FORECASTING
BOUNDARY LAYERS
CLOUDS
COASTAL REGIONS
EXPERIMENTAL DATA
FEDERAL REGION V
HUMIDITY
LAKE MICHIGAN
SEASONAL VARIATIONS
SURFACE ENERGY
TEMPERATURE DEPENDENCE
WIND
DATA
ENERGY
FREE ENERGY
GREAT LAKES
INFORMATION
LAKES
LAYERS
NORTH AMERICA
NUMERICAL DATA
PHYSICAL PROPERTIES
SURFACE PROPERTIES
SURFACE WATERS
THERMODYNAMIC PROPERTIES
USA
VARIATIONS
500100* - Environment
Atmospheric- Basic Studies- (-1989)