Variations of OH rotational temperature over Syowa Station in the austral winter of 2008 | Zendy

Hidehiko Suzuki | Zendy; Yoshihiro Tomikawa | Zendy; Makoto Taguchi | Zendy; Takuji Nakamura | Zendy; Masaki Tsutsumi | Zendy

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Variations of OH rotational temperature over Syowa Station in the austral winter of 2008

Author(s) -

Hidehiko Suzuki,

Yoshihiro Tomikawa,

Makoto Taguchi,

Takuji Nakamura,

Masaki Tsutsumi

Publication year - 2010

Publication title -

earth planets and space

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.835

H-Index - 74

eISSN - 1880-5981

pISSN - 1343-8832

DOI - 10.5047/eps.2010.07.010

Subject(s) - mesopause , rotational temperature , latitude , atmospheric sciences , airglow , environmental science , zonal and meridional , variation (astronomy) , spectrometer , polar , winter season , climatology , meteorology , geodesy , physics , geology , mesosphere , stratosphere , optics , spectral line , astrophysics , astronomy

A grating spectrometer for hydroxyl (OH) airglow installed at Syowa Station (69°S, 39.6°E) by the 49th Japanese Antarctic Research Expedition (JARE49) has been in operation since late February, 2008. A dataset of 153 nights was acquired at this location in the austral winter season of 2008. This dataset shows variations in the rotational temperature over a range of temporal scales. The rotational temperature around the polar mesopause region is high in winter and decreases toward summer, which is a pattern similar to that observed at Davis Station, located at almost the same latitude as Syowa Station. A large temperature variation with a period of several days was observed in early May, 2008. Based on a comparison with a simultaneous dataset obtained by the SABER instrument onboard the TIMED satellite, it is inferred that this rotational temperature variation was due to the modulation of vertical motions around the mesopause.

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