Accession Number : AD0733338

Title :   Comparative Meteorological Testing of the AMT-13 Dropsonde and JOOX-Series Rawinsonde in an Environmental Wind Tunnel.

Descriptive Note : Technical rept.,

Corporate Author : AIR WEATHER SERVICE SCOTT AFB ILL

Personal Author(s) : Severin,Brain P.

Report Date : AUG 1971

Pagination or Media Count : 89

Abstract : The test program described in the report was conducted at the Arnold Engineering and Development Center (AEDC), Tullahoma, Tennessee. The purpose of the test was to determine the accuracy and response characteristics of the temperature and relative humidity measurements made by the AMT-13 dropsonde and the JOOX-series rawinsondes. The temperature measurements of both types of sounding systems were found to be accurate to within plus or minus 1.0 degrees C and both would respond to temperature change rates equivalent to 5 degrees C per 1000 feet of vertical atmosphere without significant loss of accuracy. The humidity measurements of both systems were within the specified plus or minus 5% to 7% relative humidity accuracy, however, the AMT-13 dropsonde humidity accuracy degraded rapidly upon encountering liquid moisture. A shield to protect the dropsonde humidity sensor from direct moisture contact was fabricated and tested; it virtually eliminated the inaccuracies caused by the water contact. (Author)

Descriptors :   (*RADIOSONDES, ENVIRONMENTAL TESTS), ATMOSPHERIC SOUNDING, CORRELATION TECHNIQUES, ACCURACY, ATMOSPHERIC TEMPERATURE, BAROMETRIC PRESSURE, HUMIDITY, WIND TUNNELS, WEATHER FORECASTING

Subject Categories : Meteorology
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE