Globally consistent assessment of coastal eutrophication

• DOI: 10.1038/s41467-021-26391-9
• Publication Date: 2021-10-22T10:09:32Z
• Authors: Elígio de Raús Maúre; Genki Terauchi; Joji Ishizaka; Nicholas Clinton; Michael DeWitt
• Keywords: Science; Chlorophyll A; Oceans and Seas; Q; Eutrophication; 15. Life on land; 01 natural sciences; Article; 13. Climate action; Remote Sensing Technology; Seawater; 14. Life underwater; Environmental Monitoring; 0105 earth and related environmental sciences

Abstract Eutrophication is an emerging global issue associated with increasing anthropogenic nutrient loading. The impacts and extent of eutrophication are often limited to regions dedicated monitoring programmes. Here we introduce the first Google Earth Engine-based interactive assessment tool coastal potential (CEP). evaluates trends in satellite-derived chlorophyll- a (CHL) devise map CEP. Our analyses suggest that, globally, waters (depth ≤200 m) covering ∼1.15 million km 2 eutrophic potential. Also, CHL trends—eutrophication potential—are twofold higher than those showing signs recovery. effectively identified areas known severe symptoms, like dead zones, as well no information eutrophication. introduces prospect for consistent major implications Sustainable Development Goals (SDGs) application Observations support SDGs.