ATMOSPHERIC CARBON DIOXIDE CONCENTRATION AT SYOWA STATION (69°00′S, 39°35′E), ANTARCTICA (1985)

• Main Authors: ムラヤマ, ハルタ, タナカ, マサユキ, ナカザワ, タカキヨ, カワグチ, サダオ, ヤマノウチ, タカシ, アオキ, シュウジ, シオバラ, マサタカ, MURAYAMA, Haruta, TANAKA, Masayuki, NAKAZAWA, Takakiyo, KAWAGUCHI, Sadao, YAMANOUCHI, Takashi, AOKI, Shuji, SHIOBARA, Masataka
• Language: English
• Published: National Institute of Polar Research 1987
• Subjects: Syowa Station; Antarc*; Antarctica; E. Antarctica; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/record/3537/files/KJ00000767745.pdf; https://doi.org/10.15094/00003537; https://nipr.repo.nii.ac.jp/records/3537

P(論文) Since 1984,continuous measurements of the atmospheric CO_2 concentration have been carried out at Syowa Station, Antarctica. Preliminary inspection of the data showed that; (1) a regular diurnal variation is not observable; (2) irregular variations are sometimes observed with an extremely small amplitude of 0.2ppmv at most; (3) a seasonal variation with the minimum concentration in mid-April and the maximum concentration in mid-October and peak-to-peak amplitude of about 1.2ppmv is detected; and (4) an annual mean value of CO_2 concentration is 342.6ppmv. The results obtained in 1985 are as follows : An annual mean value of CO_2 concentration is 343.8ppmv. The pattern of seasonal variation is almost the same as that of the previous year. But a secular increase trend of the CO_2 content is larger than 1984. departmental bulletin paper