北半球 の 雪 の 減少 に 人間 の 影響 が ある 証拠
PubMedで要約を見る
まとめ
この要約は機械生成です。人為的な温暖化により 北半球の積雪が減っています この雪の減少は 特に人口密度が高い地域では 将来の温暖化に伴い 急速になり 水源の確保のリスクを高めます
科学分野
- 気候科学
- 水学
- 環境科学
背景
- 気候変動のベンチマークと水資源の確保管理に 重要な役割を果たしています
- 観測の不確実性は以前,人為的な雪の損失の検出と帰属を妨げていました.
研究 の 目的
- 人為的な温暖化が 北半球の雪積みの減少につながったことを示すために
- 雪の積もりの減少を 人間の影響と結びつけ 温度の感受性を分析する
主な方法
- 1981年から2020年までのトレンドを分析するために,スノーパックの再構築のアンサンブルを使用しました.
- 北半球の河川流域の雪積みの変化に対する人間の影響を特定するために適用された分類方法.
主要な成果
- 人為的な温暖化が確認され,北半球の3月の積雪 (1981-2020年) が減少した.
- 169の川流域のうち82の川流域で 顕著な雪の傾向が確認され 31の川流域は人間の影響によるものだと確信しています
- 雪積みの非線形温度感度が示され,冬の温度は -8°Cを超えて減速した.
結論
- 人為的な雪の損失は 原因であり,近年の温暖化に伴い加速するだろう.
- 非線形温度感度は過去の傾向を説明し,将来の水の安全性のリスクを予測します.
- 深刻な水資源の影響を回避するには 気候変動を大幅に緩和する必要があります
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