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Updated: Mar 25, 2026

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気候変動による水位上昇が減速した10年
J T Reager1, A S Gardner2, J S Famiglietti3
1Jet Propulsion Laboratory, California Institute of Technology, CA, USA. john.reager@jpl.nasa.gov.
まとめ
2002年から2014年の間に 気候の変動により 陸上水の貯蔵が大きく変化し 海面上昇が減速しました この陸上の貯水量は 氷の融解と地下水の枯渇を 部分的に相殺します
科学分野:
- 地球科学
- 気候科学
- 水学
背景:
- 観測の難しさのために 気候に起因する陸地水貯蔵の変化は 歴史的に省略されています
- 陸上の水域の動態を含むすべての要因を定量化する必要があります.
研究 の 目的:
- 気候による陸地貯水量の変動が海面予算に与える影響を定量化する.
- これらの変動が世界の海面上昇速度に与える影響を評価する.
主な方法:
- 衛星による時間変数重力の測定を 利用した.
- 統合された世界の氷河の損失の見積もり
- 水の貯蔵効果を隔離するために分散された大陸の陸地質の変化.
主要な成果:
- 2002年から2014年の間に,気候の変動により,陸上水の貯蔵量は3200±900ギガトン増加しました.
- 陸上の貯水量の増加は海面上昇の速度を 年間0.71±0.20ミリメートル減速させた.
- 氷床,氷河,地下水の採取による損失を補う.
結論:
- 陸上の水貯蔵の気候による変化は,10年にわたる海面の変化の重要な要因です.
- 陸上の貯水力学を組み込むことは,海面上昇の正確な帰属に不可欠です.
- 将来の海平面予測は,水循環の変動を考慮する必要があります.
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