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| Titel |
Simultaneous PMC and PMSE observations with a ground-based lidar and SuperDARN HF radar at Syowa Station, Antarctica |
| VerfasserIn |
Hokuto Suzuki, T. Nakamura, M. K. Ejiri, T. Ogawa, M. Tsutsumi, M. Abo, T. D. Kawahara, Y. Tomikawa, A. S. Yukimatu, N. Sato |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 10 ; Nr. 31, no. 10 (2013-10-24), S.1793-1803 |
| Datensatznummer |
250086130
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| Publikation (Nr.) |
 copernicus.org/angeo-31-1793-2013.pdf |
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| Zusammenfassung |
| A Rayleigh–Raman lidar system was installed in January 2011 at Syowa
Station, Antarctica (69.0° S, 39.6° E). Polar mesospheric
clouds (PMCs) were detected by lidar at around 22:30 UTC (LT −3 h) on 4
February 2011, which was the first day of observation. This was the first
detection of PMCs over Syowa Station by lidar. On the same day, a Super Dual
Auroral Radar Network (SuperDARN) HF radar with oblique-incidence beams
detected polar mesospheric summer echoes (PMSE) between 21:30 and 23:00 UTC.
This event is regarded as the last PMC activity around Syowa Station during
the austral summer season (2010–2011), since no other PMC signals were
detected by lidar in February 2011. This is consistent with results of PMC
and mesopause temperature observations by satellite-born instruments of AIM
(Aeronomy of Ice in the Mesosphere)/CIPS (Cloud Imaging and Particle Size)
and AURA/MLS (Microwave Limb Sounder) and horizontal wind measurements taken
by a separate MF radar. Doppler velocity of PMSE observed by the HF radar
showed motion toward Syowa Station (westward). This westward motion is
consistent with the wind velocities obtained by the MF radar. However, the
PMSE region showed horizontal motion from a north-to-south direction during
the PMC event. This event indicates that the apparent horizontal motion of
the PMSE region can deviate from neutral wind directions and observed Doppler
velocities. |
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