Comparison of OH rotational temperatures measured by the spectral airglow temperature imager (SATI) and by a tilting-filter photometer

Details Comparison of OH rotational temperatures measured by the spectral airglow temperature imager (SATI) and by a tilting-filter photometer Comparison of OH rotational temperatures measured by the spectral airglow temperature imager (SATI) and by a tilting-filter photometer

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jastp..66..891s&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 66, Issue 11, p. 891-897.

Physics

2

Airglow, Rotational Temperature, Mesopause Region, Spectral Measurement, Sati, Aeronomy

Scientific paper

Measurements of OH rotational temperatures have been carried out at Shigaraki, Japan (34.8°N, 136.1°E), for 8 nights in September-December 2000, using the Spectral Airglow Temperature Imager (SATI) and a tilting-filter zenith photometer (MC4), simultaneously. Clear positive correlation was obtained between the two temperatures. However, the absolute temperatures obtained by SATI were unusually low (~130-180K) with differences of ~60K from the MC4 temperatures. We discuss possible causes of the temperature differences, particularly for SATI, which newly uses OH(6-2) Q-branch lines (MC4 uses OH(6-2) P-branch lines) and imaging optics for the temperature measurement.

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