July 29, 2021

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Earth is Trapping ‘Unprecedented’ Amount of Heat, NASA Says

Earth is Trapping ‘Unprecedented’ Amount of Heat, NASA Says

The Earth is trapping nearly twice as much heat as it did in 2005, according to new research, described as an “unprecedented” increase amid the climate crisis. From a report: Scientists from NASA, the US space agency, and the National Oceanic and Atmospheric Administration (Noaa), reported in a new study that Earth’s “energy imbalance approximately doubled” from 2005 to 2019. The increase was described as “alarming.” “Energy imbalance” refers to the difference between how much of the Sun’s “radiative energy” is absorbed by Earth’s atmosphere and surface, compared to how much “thermal infrared radiationĂ¢ bounces back into space.

“A positive energy imbalance means the Earth system is gaining energy, causing the planet to heat up,” NASA said in a statement about this study. Scientists determined there was an energy imbalance by comparing data from satellite sensors — which track how much energy enters and exits Earth’s system — and data from ocean floats. This system of data-gathering floats, which stretches across the globe, allows for “an accurate estimate of the rate at which the world’s oceans are heating up.” Because about 90% of excess energy from an imbalance winds up in the ocean, the satellite sensors’ data should correspond with temperature changes in oceans.

Read more of this story at Slashdot.