DMSと地球上の海面における太陽放射線量との強い関係がある
1Institut de Ciències del Mar (CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain. sergio.vallina@icm.csic.es
まとめ
海洋生物学的ダイメチル硫化物 (DMS) の排出は,太陽放射線と密接に関連しています. この発見は,太陽光が海洋のDMS生産に影響を与える潜在的な気候フィードバックループをサポートしています.
科学分野:
- マリン・バイオジオケミストリー
- 大気化学 大気化学
- 気候科学 気候科学
背景:
- 海洋生物学的ダイメチル硫化物 (DMS) は,大気中の硫黄の重要な天然源である.
- DMSは,雲の形成と,遠隔の海洋上の地球のアルベドの決定的な役割を果たしています.
研究 の 目的:
- 海洋DMS濃度と環境要因との関係を調査する.
- DMSと太陽放射線を含む気候フィードバックメカニズムの可能性を評価する.
主な方法:
- DMS濃度のグローバルデータ分析.
- 上部海洋混合層における太陽放射線量との相関分析.
主要な成果:
- DMS濃度は,太陽放射線量と高い正の相関を示しています.
- この相関関係は,異なる緯度,プランクトンバイオマスレベル,および温度において一貫しています.
結論:
- 太陽放射線は,海洋DMS生産の主要な原動力である.
- これは,DMS排出を介して気候を調節する負のフィードバックループの仮説を支持する.
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