Accession Number : AD0671644

Title :   STUDIES OF EFFECTS OF BOUNDARY MODIFICATION IN PROBLEMS OF SMALL AREA METEOROLOGY.

Descriptive Note : Annual repts. for 1966-67,

Corporate Author : WISCONSIN UNIV MADISON DEPT OF METEOROLOGY

Personal Author(s) : Lettau,Heinz H.

Report Date : FEB 1968

Pagination or Media Count : 162

Abstract : Of the six sections of this first report, two deal specifically with the physics of the air and soil layer close to dry desert ground, because the general problem of energy conversion from insolation to heat can best be studied when the moisture factor is eliminated. The observations on which the discussion in Sections 1 and 5 are based were obtained at a site in the Peruvian desert, where the mean annual rainfall is measured as 'traces.' The region includes climatic stations which hold the world record of dryness. Section 2 is concerned with small area meteorology under most humid conditions, in airflow over an inland lake. The investigation of details of wind structure around obstacles (Sections 3 and 4) establishes connections to a broad range of related problems, from the tower 'bias' of conventional anemometer exposure, to the structure of airflow between complicated roughness elements like the trees of a forest. For the last problem, that of airflow under plant canopies, offers new prospects of application, which will be followed up in the forthcoming final report. (Author)

Descriptors :   (*METEOROLOGY, WIND), (*MICROMETEOROLOGY, BOUNDARY LAYER), MICROMETEOROLOGY, HEAT FLUX, MATHEMATICAL MODELS, WEATHER STATIONS, FLOW FIELDS, ATMOSPHERIC MOTION, ANEMOMETERS, TERRAIN, SOILS, ATMOSPHERIC TEMPERATURE, WIND, MOISTURE, TREES, PLANTS(BOTANY), HARMONIC ANALYSIS

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE