Oceans soaking up more heat than estimated

"We thought that we got away with not a lot of warming in both the ocean and the atmosphere for the amount of CO2 that we emitted. But we were wrong" Laure Resplandy a geoscientist at Princeton University who led the new study told the Washington Post

The world's oceans have absorbed 60 percent more heat than previously thought over the last quarter of a century, scientists said Thursday, leaving Earth more sensitive still to the effects of climate change.

Scientists base their predictions about how much the Earth is warming by adding up all the excess heat that is produced by the known amount of greenhouse gases that have been emitted by human activities. If they did, they would be more careful with nature and the environment, especially now, when we know that climate change has become a big threat for all of us.

The U.S. has since pulled out of that climate agreement, but most of the rest of the world remains focused on limiting the rise of the world's average temperatures.

The UN report found that the planet will reach the crucial threshold of 1.5 degrees Celsius above pre-industrial levels by as early as 2030, precipitating the risk of extreme drought, wildfires, floods and food shortages for hundreds of millions of people.

This new study says that will be very hard indeed.

"We thought that we got away with not a lot of warming in both the ocean and the atmosphere for the amount of Carbon dioxide that we emitted", Laure Resplandy, a Princeton geoscientist who led the study told the Washington Post. "This is a new complementary method, and the results are quite compatible with our estimates for the most part", he wrote in an email.Dr. Resplandy said her work did not upend the I.P.C.C. report's warnings that humanity has only a couple of decades to ward off some of climate change's most catastrophic effects."It doesn't change the results", she said.

"When you stop the greenhouse gases, the ocean continues to warm for like another two decades, and so everything continues to warm", said Ralph Keeling, climate scientist at Scripps Institution of Oceanography and coauthor of the report.

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"A warmer ocean will hold less oxygen, and that has implications for marine ecosystems", said Dr Resplandy. Warm water will also lead to thermal expansion and, therefore, sea level rising.

Since 2007, scientists have been using a system of almost 4,000 Argo floats to record temperature and the amount of salinity in Earth's oceans.

By contrasting the progressions in APO they saw with the progressions anticipated that due would petroleum derivative utilize and carbon dioxide take-up, the scientists could figure the amount APO radiated from the sea getting to be hotter. Researchers found that the oceans have soaked about 150 times the amount of energy needed to generate electricity around the world. Global temperature records were spotty before 2007, when an worldwide consortium began a program, known as Argo, creating an worldwide network of ocean-temperature-measuring instruments.

In the current study, the team - rather than measuring the temperature of oceans directly - measured the volume of carbon dioxide, oxygen and other gases that escaped the oceans (as they heated) in recent decades and moved into the atmosphere.

"When the ocean warms, it loses some gas to the atmosphere", Resplandy said.

What can we do to slower the rate of global warming?

Moreover, he warned that the heat the oceans have been absorbing can still be transferred back to the atmosphere in the centuries to come.

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