COMPARISON OF LOWER THERMOSPHERIC WINDS MEASURED BY A POLARIZING MICHELSON INTERFEROMETER AND A FABRY-PEROT SPECTROMETER DURING THE AIDA CAMPAIGN
COMPARISON OF LOWER THERMOSPHERIC WINDS MEASURED BY A POLARIZING MICHELSON INTERFEROMETER AND A FABRY-PEROT SPECTROMETER DURING THE AIDA CAMPAIGN
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DOI：
10.1016/0021-9169(93)90071-6
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发表时间：
1993-03-01
期刊：
影响因子：
--
通讯作者：
TEPLEY, CA
中科院分区：
文献类型：
--
作者：
BIRD, JC;SHEPHERD, GG;TEPLEY, CA
The Polarizing Atmospheric Michelson Interferometer, PAMI, a new version of the Wide Angle Michelson Interferometer, was used to measure winds in the lower thermosphere during the AIDA campaign. In the polarizing instrument, the optical path difference is changed simply by rotating a polarizing filter external to the interferometer. This allows a very simple scanning mechanism as described by BIRD et al. [(1992) J. Phys.] Results of measurement of the 557.7 nm emission were obtained from the AIDA observation campaign in Puerto Rico (with PAMI located at 17-degrees-57'0''N, 66-degrees-52'42''W). Co-ordinated observations of atmospheric motions were made by PAMI along with other optical and radio measurements during April and May 1989. By comparing with the Arecibo Fabry-Perot instrument, the first wind comparisons of a Fabry-Perot spectrometer and a Michelson interferometer are presented. The agreement is very good in most cases, but there are times when there is a constant wind offset for several hours, and a few occasions of major disagreement. It is concluded that the constant offset results from the 50 km difference in the locations of the two stations; the major disagreement may result from contamination, for the MI, of winds in the F-region during ionospheric disturbances.
