ATMOSPHERIC CARBON DIOXIDE MEASUREMENTS AT SYOWA STATION, ANTARCTICA, 1984-1988

元データ 国立極地研究所

概要

Precise and continuous measurements of atmospheric CO_2 concentration have been continued at Syowa Station (69°00'S, 39°35'E), Antarctica since February 1984. Diurnal CO_2 variation was hardly observable throughout the year. The secular CO_2 trend was variable with time, showing slow increase in 1984,1986 and 1988 and rapid increase in 1985 and 1987. The annual CO_2 increase was remarkable, especially in 1987,which may be related to the 1987 ENSO event. The average rate of annual CO_2 increase over the last 5 years was about 1.6 ppmv yr^<-1>. The average seasonal CO_2 cycle showed minimum and maximum concentrations in mid-April and in early October, respectively. Its peak-to-peak amplitude was about 1.1 ppmv for the period 1984-1988. The seasonal cycle was variable from year to year, but there was no indication of long-term amplitude increase. It was found that irregular CO_2 variations with amplitudes of about 0.2 ppmv and with periods of a few tens of days have high correlation with air mass exchange by synoptic scale weather disturbances.

著者

張 紀久夫 阪大基:福井工大工
Yamanouchi Takashi National Institute of Polar Research
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
Aoki Shuji Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
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
FUKABORI Masashi Meteorological Research Institute
MURAYAMA Shohei Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University
MURAYAMA Haruta Faculty of Education, Yokohama National University
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
Mae Shinji Department Of Applied Physics Hokkaido University
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Faculty Of Science
Murayama Shohei Center For Atmospheric And Oceanic Studies Tohoku University
Shiobara M Meteorological Res. Inst. Tsukuba Jpn
Fukabori M Meteorological Res. Inst. Ibaraki Jpn
Muramatsu Hisafumi Faculty Of Education Yokohama National University
Shinbori K Hokkaido Univ. Sapporo
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
Yamanouchi Takashi National Institute Of Polar Research 10-3 Midoricho Tachikawa Tokyo Japan.
Mae Shinji National Institute For Resources And Environment
Shinbori K Nagaoka National College Of Technology
Yamada Tomomi Geosystems Inc.
Murayama Haruta Faculty Of Education Yokohama National University

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