Researchers from the University of California at Santa Barbara have discovered some of the strongest evidence yet for a direct linkage between temperatures around tropical regions on Earth and the amount of greenhouse gases that are present in the atmosphere.
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“The relationship between tropical climate and greenhouse gases is particularly critical because tropical regions receive the highest proportion of solar output and act as a heat engine for the rest of the earth,” said Lea.
Modern observations of tropical sea surface temperature indicate a rise of one to two degrees Fahrenheit over the last 50 years, a trend consistent with rising carbon dioxide in the atmosphere due to fossil fuel combustion, according to the authors. The paleoclimate evidence from this new study supports the attribution of the tropical temperature trend to the ever-increasing greenhouse gas burden in the atmosphere.
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