Accession Number : AD0660996

Title :   CONCERNING THE ACCURACY OF AIR TEMPERATURE LAPSE RATE AND HUMIDITY GRADIENT MEASUREMENTS,

Corporate Author : WEATHER BUREAU WASHINGTON D C

Personal Author(s) : Kucherov,N. V.

Report Date : APR 1960

Pagination or Media Count : 9

Abstract : Deviations in temperature measurements are caused, chiefly by a natural micro-oscillation of the temperature; a diminishing of the dispersions of the results may not be attained by increasing the degree of accuracy in the thermometer readings further to 0.03 to 0.05 degrees C. A more accurate determination of the mean temperature may be obtained by increasing the inertia of the thermometer three to five times. The deviation of individual measurements from the mean temperature increases with the instability of the thermal stratification; thus for example, with a temperature lapse rate of 0.8 degrees C/m, the value based on five to six readings per hour is equal to 0.10 degrees C, and on nine to 10 readings per hour is equal to 0.006 degrees C. The dry-wet bulb difference is measured even more accurately because T is considerably greater than the difference between the readings of the dry-bulb thermometers mounted at the 0.5 and 1.5 meter heights. (Author)

Descriptors :   (*LAPSE RATE, MEASUREMENT), (*HUMIDITY, MEASUREMENT), METEOROLOGICAL INSTRUMENTS, ACCURACY, WEATHER STATIONS, ATMOSPHERIC TEMPERATURE, STABILITY, USSR

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE