Differences of the atmospheric CH4 concentration between the Arctic and Antarctic regions in pre‐industrial/pre‐agricultural era

T. Nakazawa, T. Machida, M. Tanaka, Y. Fujii, S. Aoki, O. Watanabe

研究成果: Article査読

50 被引用数 (Scopus)

抄録

Air samples in ice cores from Site J, Greenland and Mizuho, Antarctica were analyzed to reconstruct the past concentrations of atmospheric CH4 at northern and southern high latitudes. The results showed that the CH4 concentrations were fairly constant in the pre‐industrial/pre‐agricultural era covered by this study, average values being 756±10 and 701±10 ppbv for the Site J and Mizuho cores, respectively, and then increased significantly with time. The pre‐industrial/pre‐agricultural levels of the CH4 concentration obtained from the Site J core were higher by 55±20 ppbv than those from the Mizuho core, suggesting that natural CH4 sources had been stronger in the northern hemisphere than in the southern hemisphere.

本文言語English
ページ(範囲)943-946
ページ数4
ジャーナルGeophysical Research Letters
20
10
DOI
出版ステータスPublished - 1993 5月 21
外部発表はい

ASJC Scopus subject areas

  • 地球物理学
  • 地球惑星科学(全般)

フィンガープリント

「Differences of the atmospheric CH4 concentration between the Arctic and Antarctic regions in pre‐industrial/pre‐agricultural era」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル