VARIATIONS OF ATMOSPHERIC CO_2 CONCENTRATION OVER SYOWA STATION, ANTARCTICA AND AIR TRANSPORT PROCESS

元データ 国立極地研究所

概要

Aircraft and ground-based measurements of the atmospheric CO_2 concentration have been made respectively at and over Syowa Station, Antarctica since January 1983. The minimum concentration of the average seasonal CO_2 cycle occurs in March throughout the troposphere and the maximum concentration appears in mid-August and late in September in the upper troposphere and in the lower and middle troposphere, respectively. The peak-to-peak amplitude of the cycle decreases slightly with height. The CO_2 concentration increases with height during most of the year and the height-dependent concentration difference is smaller from late winter to spring than in the remaining seasons. To interpret these variations of the CO_2 concentration, 3-dimensional trajectory analysis was done using U.S. NMC data. From the results obtained, it is suggested that the northern hemispheric air with high CO_2 concentration is transported to the Antarctic region through the upper troposphere from late fall to winter, while the air with low CO_2 concentration is transported from southern middle latitudes into the Antarctic region through the lower troposphere in the remaining seasons. These air transport processes are especially important for variations of the CO_2 concentration over the station.

著者

山崎 孝治 北大院地球環境
張 紀久夫 阪大基:福井工大工
Yamanouchi Takashi National Institute of Polar Research
HAYASHI Masahiko Solar Terrestrial Environment Laboratory, Nagoya University
YAMAZAKI Koji Meteorological Research Institute, Nagamine
Takata Morimasa National Institute Of Polar Research
Kawaguchi Sadao Nagaoka National College Of Technology
Shiobara Masataka National Institute For Polar Research
Shiobara Masataka Meteorological Research Institute
Morimoto S National Institute Of Polar Research Organization Of Information And Systems
Shimohara Kimiko Kitami Institute of Technology
Nakazawa Takakiyo Center for Atmospheric and Oceanic Studies, Tohoku University
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Aoki Shuji Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
MURAYAMA Shohei National Institute for Resources and Environment
SHIMIZU Akira National Institute for Environmental Studies
KAWAGUCHI Sadao National Institute of Polar Research
TANAKA Masayuki Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University
AOKI Shuhji National Institute of Polar Research
MAKINO Yukio Meteorological Research Institute
FUKABORI Masashi Meteorological Research Institute
Murayama Shohei National Inst. Of Advanced Industrial Sci. And Technol. (aist)
Yamanouchi Takashi National Institute For Polar Research
Morimoto S National Inst. Polar Res. Tokyo Jpn
Aoki Shuhji Faculty Of Science Tohoku University
Tanaka Masayuki Center For Atmospheric And Oceanic Studies Faculty Of Science Tohoku University
Satow Kazuhide Nagoya Technical College
Mae Shinji Department Of Applied Physics Hokkaido University
Makino Yukio Hakodate Marine Observatory, Japan Meteorological Agency
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
Hayashi Masahiko Solar Terrestrial Environment Laboratory Nagoya University
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Faculty Of Science
Shiobara M Meteorological Res. Inst. Tsukuba Jpn
Fukabori M Meteorological Res. Inst. Ibaraki Jpn
清水 明 Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Mae S Hokkaido Univ. Sapporo
Shinbori K Hokkaido Univ. Sapporo
Nakazawa T Center For Atmospheric And Oceanic Studies Faculty Of Science
Yamada T Geosystems Inc.
Kawaguchi Sadao Nagoya University
Yamanouchi Takashi National Inst. Of Polar Res. And Dep. Of Polar Sci. The Graduate Univ. For Advanced Studies 10-3 Mid
Yamazaki Koji Graduate School Of Environmental Earth Science Hokkaido University
Yamazaki Koji Meteorological Research Institute
Yamanouchi Takashi National Institute Of Polar Research 10-3 Midoricho Tachikawa Tokyo Japan.
Tanaka Masayuki Department Of Materials Science And Processing Graduate School Of Engineering Osaka University
Mae Shinji National Institute For Resources And Environment
Shinbori K Nagaoka National College Of Technology
Yamada Tomomi Geosystems Inc.

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