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Clear air Doppler radar measurements of the vertical component of wind velocity in the troposphere and stratosphere
Author(s) -
Peterson Vern L.,
Balsley Ben B.
Publication year - 1979
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl006i012p00933
Subject(s) - zenith , stratosphere , troposphere , azimuth , doppler effect , radar , doppler radar , remote sensing , altitude (triangle) , geology , wind speed , geodesy , atmosphere (unit) , meteorology , optics , atmospheric sciences , physics , aerospace engineering , geometry , mathematics , engineering , astronomy
We discuss three techniques for using a Doppler radar to deduce the vertical component of the wind velocity in the optically clear atmosphere. These techniques involve operating the radar antenna in three different modes: 1) scanning along almucantar circles (azimuth scans), 2) scanning along vertical circles (elevation scans), and 3) leaving the antenna fixed at the zenith. Results obtained from the Chatanika, Alaska radar facility are presented which show that below about 5 km altitude, all three methods give essentially the same results. Above this altitude, the first two methods become increasingly subject to errors arising from the effect of large scale atmospheric inhomogeneities and thus give less reliable vertical velocities. The zenith method gives accurate vertical velocities for all altitudes within its range.