INVESTIGATION OF STRATOSPHERE WINDS AND TEMPERATURES FROM ACOUSTICAL PROPAGATION STUDIES.
Abstract
An investigation of the velocities of compressional waves in the region 30 to 60 kilometers above sea level has been made by means of sound propagation tests. From an analysis of these tests knowledge of stratosphere winds and temperatures are obtained. A separation of the temperature and wind effects is made possible by variations in the distances and azimuths of the recording sites from the source of the waves. Results of summer tests in the Canal Zone, Bermuda, and Alaska and of a winter test in Alaska, together with some results of incomplete tests on the East Coast of the United States and in New Mexico, are presented. Temperatures were found to be less than those reported in earlier acoustical studies where winds were assumed to be negligible. The heights of the high-temperature layer varied between 50 and 60 kilometers, being maximum in the high-latitude winter months. Easterly winds were found during the summer months for all latitudes, with minimum values in Alaska; and high westerly winds were found in Alaska during the winter. Diurnal effects are shown to have been negligible. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1950
- Accession Number
- AD0638150
Entities
People
- A. P. Crary
Organizations
- Air Force Cambridge Research Laboratories