Simulation of the Effects of Zero-Doppler Reference on the Extraction of Nighttime Thermospheric Vertical Neutral Winds from a Bi-Static FPI Experiment

Details Simulation of the Effects of Zero-Doppler Reference on the Extraction of Nighttime Thermospheric Vertical Neutral Winds from a Bi-Static FPI Experiment Simulation of the Effects of Zero-Doppler Reference on the Extraction of Nighttime Thermospheric Vertical Neutral Winds from a Bi-Static FPI Experiment

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa31b1971h&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SA31B-1971

Other

[2415] Ionosphere / Equatorial Ionosphere, [2427] Ionosphere / Ionosphere/Atmosphere Interactions, [3394] Atmospheric Processes / Instruments And Techniques

Scientific paper

We present results of the thermospheric neutral winds obtained from a bi-static Fabry-Perot interferometer (FPI) experiment carried out in northeastern Brazil. Using a common-volume observing mode, measurements of the vertical wind can be obtained by considering coincident measurements made by both FPIs from an inline direction. Results from this experiment suggest that the nighttime thermospheric vertical wind can, at times, be non-negligible. We discuss how the choice of the zero-Doppler reference, required to obtain absolute estimates of the neutral winds, affects the estimates of the vertical wind and investigate the possibility of using measurements of a frequency-stabilized HeNe laser or other line source as the zero-Doppler reference. We present a simulation to investigate how errors in the zero-Doppler reference map into the extracted vector wind estimates given a variety of multi-FPI setups.

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