気候変動によるアマゾンの水域の極端な温暖化
Ayan Santos Fleischmann1, Fabrice Papa2,3, Stephen K Hamilton4
1Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil.
まとめ
アマゾンの水域は 干ばつにより2023年に極端な高温を経験し,魚やイルカの死因となった. この温暖化傾向は 気候変動と関連しており 水生生態系を脅かしています
科学分野:
- 環境科学
- 気候科学
- 水生生態学
背景:
- アマゾンの水域は2023年に前例のない干ばつと熱波に直面しました.
- この出来事は魚とイルカの大量死につながった.
研究 の 目的:
- 2023年のイベント中にアマゾンの湖の極端な水温のドライバーを調査する.
- アマゾン湖の温度における長期的な傾向を分析し,将来の影響を予測する.
主な方法:
- アマゾンの10つの湖の水温をモニターしています
- 1990年から2023年までの地域的な湖の気温の動向を評価するために衛星データを活用する.
- 高温に寄与する重要な要因を特定するためにモデリングを使用します.
主要な成果:
- 監視された5つの湖は昼間は37°Cを超え,1つの湖は41°Cに達した.
- 主要な要因として 高い太陽放射線,水深の低下,風速の低下,水質のぼやきが挙げられました
- 1990年から2023年の間,地域の湖で10年ごとに0.6°Cの温暖化傾向が観察されました.
結論:
- アマゾンの水域では 極端な暑さが発生し 激化しています
- 気候の変化は水生生物の許容範囲を超えた温度を 増加させると予測されています
- アマゾンの水生生態系には 緊急の保全と気候変動緩和戦略が必要です
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