Accession Number : AD0769669

Title :   The Wave Spectrum and Windspeed as Descriptors of the Ocean Surface.

Descriptive Note : Final rept.,


Personal Author(s) : Moskowitz,Lionel I.

Report Date : 30 OCT 1973

Pagination or Media Count : 16

Abstract : Of the various parameters and phenomena used in describing sea surface conditions, the two most widely used are the wave spectrum and the windspeed. The wave spectrum states how the surface wave energy is distributed with wave frequency. The windspeed is the key parameter for allowing an estimate of the wave spectrum to be made where it is otherwise unobtainable. Remote sensing techniques have been developed to help describe what is occurring at the sea-air interface. In this report the wave spectrum concept is discussed briefly and a systematic approach is taken to describe various ways by which windspeeds at sea are determined. The various techniques for determining windspeeds at sea can be classified in three categories: (a) direct measurements from instrumented platforms, (b) estimates from noninstrumented platforms, and (c) estimates inferred from other data. Such a classification serves to document systematic errors associated with various methods of obtaining windspeed observations. (Modified author abstract)

Descriptors :   (*Ocean waves, *Wind velocity), (*Air water interactions, Ocean surface), Surface waves, Remote detectors, Spectra, Anemometers, Marine meteorology

Subject Categories : Meteorology
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE