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Ocean Heat Content - Annual
How much heat energy is being stored in Earth’s ocean?  

Colors on the map show where instruments detected more or less heat energy in the top 2,300 feet of water than the long-term average annual heat content. Orange areas show where heat content was higher than the long-term average. Blue areas show where heat content was lower than the long-term average. The darker the shade of blue or orange, the larger the heat-content difference from the long-term average.

Where do these measurements come from?  

Oceanographers use a range of temperature-sensing instruments to measure heat energy in the ocean. Among them is a fleet of more than 3,000 robotic “floats” that measure ocean temperature in the top 2,300 feet of water. Scientists constantly comp...

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