Accession Number : AD0769761

Title :   Parameterization of the Mixing Ratio Vertical Distribution by a Power-Law Profile.

Descriptive Note : Master's thesis,


Personal Author(s) : Maxwell,William Haskew

Report Date : SEP 1973

Pagination or Media Count : 72

Abstract : An investigation is made into the accuracy of the description of the actual mixing-ratio profile by a power-law approximation. The approximation is obtained by a least-squares technique in order to derive the best-fit exponent lambda of the pressure profile. The lambda-values were computed for soundings at 12 geographically diverse stations over the United States during the period 16-23 March, 1971. The lambda-values at each station were found to undergo a time-variation based mainly on the synoptic-scale variations in the mixing-ratio profiles. A stepwise multiple regression procedure involving up to four variables from the temperature-humidity soundings was used in order to predict the value of lambda from gross-parameters of the soundings by station. Tests were performed at four stations in comparing the observed precipitable water vapor (W sub 0) with that computed from the power-profile (W sub cs) which depended upon lambda computed from the sounding. (Modified author abstract)

Descriptors :   (*Water vapor, Meteorological data), (*Dew point, Meteorological data), Regression analysis, Least squares method, Seasonal variations, Curve fitting, Graphics, Theses

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE