海面 の 急激 な 上昇 と 地球 の 漸進 的 な ポール 移転 は,21 世紀 の 恒久 的 な 水質 体制 の 変化 を 示し て い ます
Ki-Weon Seo1, Dongryeol Ryu2, Taehwan Jeon3
1Department of Earth Science Education, Seoul National University, Seoul, South Korea.
まとめ
21世紀初頭には 地球の土壌の湿度が著しく低下し 膨大な量の水を失いました この傾向は気候変動対策がなければ 逆転する可能性は低いです
科学分野:
- 気候科学
- 水学
- 地球システム科学
背景:
- 地球温暖化によって陸上の水循環と陸面の流れが変化します
- 陸上の水貯蔵には大きな変化が起こっています
- 欧州中期気象予報センター (ECMWF) Reanalysis v5 (ERA5) は,重要な気候データを提供しています.
研究 の 目的:
- 21世紀初頭における土壌の湿度傾向を分析する.
- 土壌の水分減少の程度を定量化するために
- 土壌の湿度低下の要因と影響を調査する.
主な方法:
- ERA5の土壌水分を分析した.
- グリーンランドの氷の減少と比較して
- 地球の平均海面上昇と 極の移動と相関する 土壌の水分の変化
主要な成果:
- 2000年から2002年の間に約1614ギガトンの急激な土壌水分減少が発生しました.
- 2003年から2016年にかけてさらに1009ギガトンの損失が認められた.
- 土壌の水分減少は海面上昇と ポールシフトのデータと一致しています
結論:
- 降水不足と安定した蒸気流出が土壌の水分減少の原因である可能性が高い.
- 土壌の水分は2021年までに回復していない.
- 現在の気候条件では,将来の土壌の水分回復は不可能です.
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