The color of deep blue oceans, shallow turquoise waters, and emerald green coasts is quickly changing as the planet warms, according to a new study
The color of deep blue oceans, shallow turquoise waters, and emerald green coasts is quickly changing as the planet warms, according to new research published in the journalAnalyzing 20 years of satellite data, the study's authors found that over half the world's ocean, 56 percent, experienced a shift in color. The cause? Changes in the density and distribution of plankton.
Under a “business-as-usual” scenario in which greenhouse gas emissions continue unabated, the bluest subtropical zones of the ocean will become bluer, and greener regions along the equator and poles will become greener, that study found. Organic matter that blankets the surface of the ocean, like phytoplankton, changes this color. As the ocean warms, currents become more irregular, and the layers in the water become more stratified, meaning warm regions don't mix as easily with cold regions.
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