Accession Number : AD0699365

Title :   WIND PROFILES, SPECTRA, AND CROSS-SPECTRA OVER HOMOGENEOUS TERRAIN.

Descriptive Note : Final rept., 1 Jun 65-31 May 68,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK

Personal Author(s) : Blackadar,Alfred K. ; Panofsky,Hans A.

Report Date : 30 JUN 1969

Pagination or Media Count : 80

Abstract : Cospectra and quadrature spectra of wind components observed simultaneously at two levels are most easily predicted by using the coherence and the eddy slope. Analysis of White Sands data confirms the hypothesis that the latter quantities are simply related to the Richardson number. A theory is presented that makes possible the prediction of one dimensional spectra up to wavelengths several times the height. A test of the theory at White Sands gave good results. The logical basis for the similarity theory of the flow in the planetary boundary layer is examined in detail. The scaling principles developed here are applied to momentum exchange and verified tentatively by analysis of a composite set of wind observations at O'Neill, Nebraska. (Author)

Descriptors :   (*GUIDED MISSILE RANGES, WIND), (*WIND, TURBULENCE), MATHEMATICAL PREDICTION, BOUNDARY LAYER, TOWERS, NEW MEXICO

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE