First mesopause temperature measurements using sodium lidar observations in the Antarctic region
The mesopause temperature structure was observed using a sodium temperature lidar system at Syowa Station (69°00' S, 39°35' E), beginning in February 2000. The laser transmitter was newly developed and included two injection-seeded Nd: YAG lasers. Regular observations were performed using...
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ftnipr:oai:nipr.repo.nii.ac.jp:00006328 2023-05-15T14:13:41+02:00 First mesopause temperature measurements using sodium lidar observations in the Antarctic region Takuya D. Kawahara Tsukasa Kitahara Fumitoshi Kobayashi Masaki Tsutsumi Yasunori Saito Akira Nomura 2001-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6328 http://id.nii.ac.jp/1291/00006328/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6328&item_no=1&attribute_id=18&file_no=1 en eng Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/National Institute of Polar Research/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6328 http://id.nii.ac.jp/1291/00006328/ AA11397422 Advances in polar upper atmosphere research, 15, 23-31(2001-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6328&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 2001 ftnipr 2023-03-18T20:23:29Z The mesopause temperature structure was observed using a sodium temperature lidar system at Syowa Station (69°00' S, 39°35' E), beginning in February 2000. The laser transmitter was newly developed and included two injection-seeded Nd: YAG lasers. Regular observations were performed using the two-frequency technique as demonstrated by C.Y. She et al. (Geophys. Res. Lett., 17, 929, 1990), with a spatial resolution of about 1 km and a temporal resolution of 6 min. The temperature structures of the 85km to 105km region of the upper atmosphere were measured by Na D_2 Doppler profile-fitting as well as the two-frequency technique. Temperatures derived from the two techniques agreed well and were consistent with the MSIS 90 model temperature structure. Night-time temperature variations over a 15-hour period were measured in May 2000. A large temperature fluctuation with an interval of about 4 hours, and an amplitude of 60 K (probably caused by gravity waves) was observed. From the average night temperature profile, the mesopause was determined to be located at 102km, and have a temperature of 180K. These values are similar to winter values observed in the northern hemisphere. Report Antarc* Antarctic Advances in polar upper atmosphere research National Institute of Polar Research Repository, Japan Antarctic The Antarctic Syowa Station |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
The mesopause temperature structure was observed using a sodium temperature lidar system at Syowa Station (69°00' S, 39°35' E), beginning in February 2000. The laser transmitter was newly developed and included two injection-seeded Nd: YAG lasers. Regular observations were performed using the two-frequency technique as demonstrated by C.Y. She et al. (Geophys. Res. Lett., 17, 929, 1990), with a spatial resolution of about 1 km and a temporal resolution of 6 min. The temperature structures of the 85km to 105km region of the upper atmosphere were measured by Na D_2 Doppler profile-fitting as well as the two-frequency technique. Temperatures derived from the two techniques agreed well and were consistent with the MSIS 90 model temperature structure. Night-time temperature variations over a 15-hour period were measured in May 2000. A large temperature fluctuation with an interval of about 4 hours, and an amplitude of 60 K (probably caused by gravity waves) was observed. From the average night temperature profile, the mesopause was determined to be located at 102km, and have a temperature of 180K. These values are similar to winter values observed in the northern hemisphere. |
format |
Report |
author |
Takuya D. Kawahara Tsukasa Kitahara Fumitoshi Kobayashi Masaki Tsutsumi Yasunori Saito Akira Nomura |
spellingShingle |
Takuya D. Kawahara Tsukasa Kitahara Fumitoshi Kobayashi Masaki Tsutsumi Yasunori Saito Akira Nomura First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
author_facet |
Takuya D. Kawahara Tsukasa Kitahara Fumitoshi Kobayashi Masaki Tsutsumi Yasunori Saito Akira Nomura |
author_sort |
Takuya D. Kawahara |
title |
First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
title_short |
First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
title_full |
First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
title_fullStr |
First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
title_full_unstemmed |
First mesopause temperature measurements using sodium lidar observations in the Antarctic region |
title_sort |
first mesopause temperature measurements using sodium lidar observations in the antarctic region |
publisher |
Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/National Institute of Polar Research/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University |
publishDate |
2001 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6328 http://id.nii.ac.jp/1291/00006328/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6328&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic The Antarctic Syowa Station |
geographic_facet |
Antarctic The Antarctic Syowa Station |
genre |
Antarc* Antarctic Advances in polar upper atmosphere research |
genre_facet |
Antarc* Antarctic Advances in polar upper atmosphere research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6328 http://id.nii.ac.jp/1291/00006328/ AA11397422 Advances in polar upper atmosphere research, 15, 23-31(2001-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6328&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766286182993362944 |