まとめ
極域外の氷河は,海面上昇に大きく貢献しています. これらの氷河は,観測された海面上昇の3分の1から半分を占め,海洋温暖化によって説明できないかなりの量です.
科学分野:
- 氷河学 氷河学とは
- 海洋学 海洋学 海洋学
- 気候科学 気候科学
背景:
- 世界的な氷河の体積の変化は,気候変動の重要な指標である.
- 氷河の融水が海洋に与える影響を理解することは,海面上昇予測に不可欠です.
研究 の 目的:
- 氷河 (グリーンランドと南極を除く) が1884年から1975年までの海面上昇に与える影響を定量化する.
- 観測された氷河の体積の変化を用いて質量バランスモデルを校正する.
主な方法:
- 氷河の体積の観測された長期的な変化を利用して.
- 水気天気学的質量バランスモデルを使用しています.
- 季節的な質量均衡の振幅を用いて,世界の平均値に平均体積の変化をスケーリングする.
主要な成果:
- 極域の外の氷河は,1884年から1975年の間に観測された海面上昇のおよそ3分の1から半分に貢献した.
- この貢献は,熱膨張とともに,全体的な海面上昇を説明する重要な要因です.
結論:
- 非極の氷河は,世界の海面上昇に重要な役割を果たしています.
- 氷河の質量バランスの正確なモデリングは,将来の海面の変化を予測するために不可欠です.
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