Ny studie handlar om hur värmetransporter ändrar mönster till följd av uppvärmningen. Haven har tagit hand om över 90 % av överskottsvärmen, men den värmen kan flöda tillbaka till atmosfären, säger man. Det skulle betyda kraftigt ökade temperaturer över land.
Climate change reshaping how heat moves around globe
The Earth's atmosphere and oceans play important roles in moving heat from one part of the world to another, and new research is illuminating how those patterns are changing in the face of climate change.
"The greenhouse effect and carbon dioxide aren't the only issues to consider as the planet grows warmer -- they are just one part of the equation. The way that the atmosphere and oceans move heat around is changing, too, and this could have significant effects on temperatures around the world," said Zhengyu Liu, co-lead author of the study and professor of climate dynamics in the Department of Geography at The Ohio State University.
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"The ocean stores a lot of heat and in the last 50 years that has increased. And we can correlate that directly with increases in atmospheric carbon dioxide caused by human activity," Liu said. "Most studies like this have looked at future changes, hundreds of years from now. We examined the near-term differences of a warming climate."
For now, that heat is not re-entering the atmosphere, but at some point it may. If that were to happen, changes in heat transfer could contribute to significant shifts in normal temperatures worldwide, he said.
https://www.sciencedaily.com/releases/2019/01/190128125334.htm
Climate change reshaping how heat moves around globe
The Earth's atmosphere and oceans play important roles in moving heat from one part of the world to another, and new research is illuminating how those patterns are changing in the face of climate change.
"The greenhouse effect and carbon dioxide aren't the only issues to consider as the planet grows warmer -- they are just one part of the equation. The way that the atmosphere and oceans move heat around is changing, too, and this could have significant effects on temperatures around the world," said Zhengyu Liu, co-lead author of the study and professor of climate dynamics in the Department of Geography at The Ohio State University.
…
"The ocean stores a lot of heat and in the last 50 years that has increased. And we can correlate that directly with increases in atmospheric carbon dioxide caused by human activity," Liu said. "Most studies like this have looked at future changes, hundreds of years from now. We examined the near-term differences of a warming climate."
For now, that heat is not re-entering the atmosphere, but at some point it may. If that were to happen, changes in heat transfer could contribute to significant shifts in normal temperatures worldwide, he said.
https://www.sciencedaily.com/releases/2019/01/190128125334.htm


