Meteorological observations at Syowa Station in 1989 by the 30th Japanese Antarctic Research Expedition

• Main Authors: Yasuo Shudo, Yoshiyuki Fukuyama, Yoshio Kato, Hitomi Miyamoto
• Format: Article in Journal/Newspaper
• Language: English; Japanese
• Published: National Institute of Polar Research 1991
• Subjects: Geography (General); G1-922; Antarctic; The Antarctic; Syowa Station; Antarc*
• Online Access: https://doi.org/10.15094/00008737; https://doaj.org/article/ca94ffdf079c459e9357f17a45ecdc9c

This paper describes the results of meteorological observations at Syowa Station from February 1,1989 to January 31,1990 carried out by Meteorological Observation Team of the 30th Japanese Antarctic Research Expedition. The new data processing system (AMOS-2 : Automated Meteorological Observation System 2) was set up in January 1989,and the automated upper-air observation and surface observation by means of this system began in February 1989. Remarkable characteristics are as follows. 1) Monthly mean temperature of May was -21.1℃, which was the minimum record in May for the total period of observation. 2) Extremely low amount of total ozone was observed for the period of late September through mid October. Monthly mean amounts of total ozone in September, October and November recorded the third lowest in those months since 1961. These results showed the influence of the Antarctic ozone hole. 3) Strong cyclone hit our station and strong wind blew on February 3. Maximum wind speed and maximum peak gust were 41.6m/s and 50.8m/s, respectively, which were maximum records in February for the total period of observation.