Development of four Fabry-Perot interferometers for measurements of thermospheric wind and temperature

Details Development of four Fabry-Perot interferometers for measurements of thermospheric wind and temperature Development of four Fabry-Perot interferometers for measurements of thermospheric wind and temperature

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa33a1446o&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA33A-1446

Other

[2427] Ionosphere / Ionosphere/Atmosphere Interactions, [2437] Ionosphere / Ionospheric Dynamics, [3369] Atmospheric Processes / Thermospheric Dynamics, [3394] Atmospheric Processes / Instruments And Techniques

Scientific paper

We are developing four Fabry-Perot interferometers (FPIs) to measure winds and temperatures in the thermosphere and winds in the mesosphere through airglow/aurora emissions at wavelengths of 558 nm and 630 nm. One FPI with 116mm-diameter etalon (d=15mm, 558 nm and 630 nm) was installed at the EISCAT Tromso site on January 2009 for coordinated measurements with the EISCAT radar. The other three FPIs with 70mm-diameter etalons (d=15mm, 630 nm only) will be installed in Japan, Indonesia, and Australia for wind and temperature measurements at conjugate middle latitudes and at the equator. These FPIs use low-noise cooled-CCDs with 1024x1024 pixels and 4-stage thermoelectric cooling system which can cool the CCD temperature down to -80C. The large maximum incident angle (1.3-1.4 degree) to the etalon increases the sensitivity of the FPIs. In the presentation, we describe details of these instrumentations and results of test observations at Tromso, Norway, and Shigaraki, Japan.

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