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世界の淡水利用の新興傾向

M Rodell1, J S Famiglietti2,3, D N Wiese2

  • 1Hydrological Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA. Matthew.Rodell@nasa.gov.

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PubMed
まとめ

世界の淡水資源は 変化しています 衛星データから 2002年から2016年にかけての 34の陸上水貯蔵の傾向が明らかになり,自然変動,地下水の利用,気候変動により,水資源の確保に影響を与えています.

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科学分野:

  • 地球と環境科学
  • 水学
  • 気候科学

背景:

  • 世界の淡水資源は 供給量の変化により 圧力が強くなっています
  • これらの変化の原動力を理解することは 水資源の管理に不可欠です
  • 陸上水貯蔵 (TWS) は淡水の利用可能性の重要な指標です.

研究 の 目的:

  • 地上水貯蔵 (TWS) の動向を衛星観測を用いて定量化する.
  • 自然の変動,地下水の消費,気候変動など,観測されたTWSの動因を特定する.
  • 人間の影響と気候変動に対する世界の水景観の反応を評価する.

主な方法:

  • GRACE (重力回復と気候実験) 衛星からのデータを使用した.
  • 2002年から2016年までの地上水貯蔵の 34の異なるトレンドを分析した.
  • TWSの変化の要因を自然変動,持続不可能な地下水消費,気候変動,またはそれらの組み合わせに分類しました.

主要な成果:

  • 2002年から2016年の間,地球上の陸地水貯蔵における 34の重要な傾向を特定し,定量化しました.
  • 中国北西部やオカヴァンゴ・デルタのような 大規模な変化を伴う地域を強調しています
  • 観測された傾向は,気候モデルの予測と一致し,人間の活動と気候の変動の両方に反応することを示しています.

結論:

  • この研究は,世界の淡水利用可能性の観測に基づく評価を提供します.
  • この発見は,水と食料の安全保障に対する新たな脅威を評価し,予測するための青写真です.
  • 持続可能な水資源管理と政策開発には,TWSの動向とその要因を理解することが不可欠です.