Accession Number : AD0716551

Title :   Radar Hurricane Research.

Descriptive Note : Final rept. 1 Sep 69-31 Aug 70,

Corporate Author : ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCES MIAMI FLA

Personal Author(s) : Senn,H. V. ; Courtright,C. L.

Report Date : OCT 1970

Pagination or Media Count : 42

Abstract : The planning, equipment modifications, installation of transponder equipment, and execution of the spring and summer EML experiments is reviewed. It is shown that while most of the operations were successful and the data superior to the 1968 experiments further changes in certain modes of operation will be necessary in future operations. Project Stormfury radar precipitation data gathered before, during and after the successful multiple seedings of the eye wall region of hurricane Debbie on 18 and 20 August 1969 are used to test the Stormfury hypothesis that such seedings will cause changes in storm structure. Many aspects of storm structure were studied. Examination of precipitation tilt showed that shear is most cyclonic at the lowest levels; greatest in the layer below the melting level; very significant in the middle layer between 5 and 9 km; and outflow is always indicated at the higher levels, although data are very scarce about 9 km. The bright band was distributed in most quadrants of the eye wall region, but equipment malfunctions during the experiment prevented the gathering of data to permit detailed and accurate observations of its height changes or other characteristics. (Author)

Descriptors :   (*HURRICANE TRACKING, METEOROLOGICAL RADAR), ARTIFICIAL PRECIPITATION, CUMULUS CLOUDS, RADAR EQUIPMENT, STORMS, TRANSPONDERS, RADAR SIGNALS, INTENSITY, JET TRANSPORT PLANES, RAINFALL, NETWORKS, HYGROMETERS, RECORDING SYSTEMS, RADAR CROSS SECTIONS, DATA PROCESSING

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE