Sodium temperature lidar observation at Syowa Station: Summary of three-year observations and unusually high temperature in 2002

Total 223 nights (2002 hours) of temperature measurement in the mesopause region (80-105 km) was successfully done in wintertime at Syowa Station (69ºS, 39ºE) starting from 2000 through 2002. Monthly mean temperatures were calculated using nightly mean temperatures and year-to-year variation was exa...

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Bibliographic Details
Main Authors: Takuya D. Kawahara, Tsukasa Kitahara, Joji Yamashita, Fumitoshi Kobayashi, Yasunori Saito, Akio Nomura
Format: Report
Language:English
Published: Faculty of Engineering, Shinshu University/Faculty of Engineering, Shinshu University/Faculty of Engineering, Shinshu University/Faculty of Engineering, Shinshu University/Faculty of Engineering, Shinshu University/Faculty of Engineering, Shinshu University 2004
Subjects:
lidar
Syowa Station
Antarctica
mesopause region
temperature
Antarc*
Advances in polar upper atmosphere research
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6388
http://id.nii.ac.jp/1291/00006388/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6388&item_no=1&attribute_id=18&file_no=1
Description
Summary:Total 223 nights (2002 hours) of temperature measurement in the mesopause region (80-105 km) was successfully done in wintertime at Syowa Station (69ºS, 39ºE) starting from 2000 through 2002. Monthly mean temperatures were calculated using nightly mean temperatures and year-to-year variation was examined. The monthly temperature of 2002 shows unusually higher (25 K and 20 K) in June and July compared with previous 2 years. Variations of individual nights showed the temperatures at 80 km, 85 km and 110 km are in good agreement among three years through the observation period. The temperature of 2002 began to increase from the middle of May and was back to normal around the end of July in the limited altitude range of 90-105 km.

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