エルニーニョのような反応が,火山の強制作用に起因した証拠の代理です
J Brad Adams1, Michael E Mann, Caspar M Ammann
1Department of Environmental Sciences, University of Virginia, Clark Hall, Charlottesville, Virginia 22903, USA. jba7g@virginia.edu
Nature
|November 25, 2003
まとめ
爆発的な火山噴火は,エルニーニョの気候現象の可能性を大幅に高めます. この研究は,火山活動とエルニーニョ/南方振動 (ENSO) 現象を結びつける強力な証拠を提供します.
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
- 気候科学 気候科学
- 火山学 火山学とは
背景:
- 過去の研究では,火山の噴火とエルニーニョ現象との関連が示唆されているが,この関連については議論が続いている.
- 気候変動の要因を理解することは,将来の気候変動の変動を予測する上で極めて重要です.
研究 の 目的:
- 爆発的な火山活動とエルニニョ・サザンオシレーション (ENSO) イベントとの関係を調査する.
- 熱帯太平洋の海洋-大気系における火山活動の影響について,実証的根拠を提供すること.
主な方法:
- エルニーニョ活動の2つの異なる古気候再構築を用いた.
- 1649年から現在までの爆発的な火山活動の2つの独立した,プロキシベースのクロノロジーを採用しました.
- 火山のフォースリングに対するエルニーニョのような反応を分析した.
主要な成果:
- 何世紀にもわたって爆発的な熱帯火山の強制に,多年にわたるエルニーニョのような有意な反応を示した.
- 火山の噴火が次の冬にエルニニョ現象が発生する可能性のおよそ2倍であることを発見しました.
- 過去の爆発的な火山活動とENSOの行動の間の強力な経験的リンクを確立しました.
結論:
- 爆発的な火山活動は,ENSOイベントの重要な要因である.
- この発見は,外部の放射線強制が熱帯太平洋にどのように影響するかについての理解を深めるものです.
- この研究は,自然および人為的な強制力に対する気候反応の予測に意味を持っています.
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