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インド太平洋の温水プールから2,000年以上の温度と水文学的再構築が行われた
Delia W Oppo1, Yair Rosenthal, Braddock K Linsley
1Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA. doppo@whoi.edu
Nature
|August 29, 2009
まとめ
熱帯インド太平洋温水プールからの新しい海面温度再構築は,過去の気候の変動を明らかにします. この記録は,北半球の傾向に沿って,20世紀後半は以前の時期よりも暖かかったことを示しています.
科学分野:
- 古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは
- 海洋学 海洋学 海洋学
- 気候科学 気候科学
背景:
- 北半球の気温の再構築は,最近の温暖化を示しています.
- 熱帯地域,特にインド太平洋温水プール (IPWP) は,世界の気候にとって極めて重要です.
- 既存の再構築は,海洋の影響を無視して,陸上のデータに依存しています.
研究 の 目的:
- IPWPにおける過去2千年における海面温度 (SST) を再構築する.
- 代理ベースのSSTデータを,楽器記録と北半球の傾向と比較する.
- 東アジアのモンスーンシステムに対するIPWP水文学の影響を理解するために.
主な方法:
- マカサール海峡,インドネシアからの連続SST再構築が10年分解決されました.
- 直接比較のために,インストゥルメンタルレコードと重複するプロキシデータを利用した.
- 海水デルタのコンパニオン再構築 ((18) Oは塩分と水文学の指標として.
主要な成果:
- IPWPのSST再構築は,北半球の温度再構築と似た傾向を示しています.
- 復元されたSSTは,中世の温暖期 (1000-1250年) の現代的な値に匹敵していた.
- 小さな氷河期の海面気温は,現代の値よりも寒く,大きな変動がありました.
結論:
- IPWPのSST記録は,熱帯気候の変動性に関する貴重な長期的な視点を提供します.
- IPWPの水文学は,東アジアのモンスーンシステムと強く結びついている.
- 過去のIPWPの気温変動は,現在と将来の気候変動を理解するための文脈を提供します.
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