The Galapagos Islands are already famed for biodiversity. Could the water offshore become a refuge for marine animals seeking cold water in a warming world? (via hakaimagazine)
Pushed by climate change, almost every part of the ocean is heating up. But off the west coast of the Galapagos Islands, there is a patch of cold, nutrient-rich water. This prosperous patch feeds phytoplankton and breathes life into the archipelago.
There are other cold pools on the planet. One, in the North Atlantic just south of Greenland, is caused by the weakening of a global current that carries heat north. But according toled by Kris Karnauskas and Donata Giglio, climate scientists at the University of Colorado Boulder, the Galapagos cold pool is a product of the shape of the seafloor and the rotation of the planet—two things unlikely to change because of rising greenhouse gases.
Karnauskas and Giglio’s work shows that when the EUC gets within 100 kilometers west of the Galapagos Islands, it suddenly intensifies as it’s diverted upward by the islands. This causes the water to be up to 1.5 °C cooler than the water outside this cold pool. The researchers found a similar, yet weaker, effect west of the Gilbert Islands in the western Pacific Ocean.
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