@article{oai:nipr.repo.nii.ac.jp:00003537,
 author = {ムラヤマ, ハルタ and タナカ, マサユキ and ナカザワ, タカキヨ and カワグチ, サダオ and ヤマノウチ, タカシ and アオキ, シュウジ and シオバラ, マサタカ and MURAYAMA, Haruta and TANAKA, Masayuki and NAKAZAWA, Takakiyo and KAWAGUCHI, Sadao and YAMANOUCHI, Takashi and AOKI, Shuji and SHIOBARA, Masataka},
 journal = {Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology},
 month = {Sep},
 note = {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.},
 pages = {148--149},
 title = {ATMOSPHERIC CARBON DIOXIDE CONCENTRATION AT SYOWA STATION (69°00′S, 39°35′E), ANTARCTICA (1985)},
 volume = {1},
 year = {1987}
}