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“Simpson's Law” and the Spectral Cancellation of Climate Feedbacks
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2021
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Source: Geophysical Research Letters, 48(14)
[PDF-569.93 KB]
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Journal Title:Geophysical Research Letters
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Description:We spectrally resolve the conventional clear-sky temperature and water vapor feedbacks in an idealized single-column framework, and show that the well-known partial compensation of these feedbacks is actually due to an almost perfect cancellation of the spectral feedbacks at wavenumbers where H 2O is optically thick. This cancellation is a natural consequence of “Simpson's Law”, which says that H 2O emission temperatures do not change with surface warming if relative humidity (RH) is fixed. We provide an explicit formulation and validation of Simpson's Law, and furthermore show that this spectral cancellation of feedbacks is naturally incorporated in the alternative RH-based framework
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Source:Geophysical Research Letters, 48(14)
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ISSN:0094-8276;1944-8007;
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Rights Information:CC BY
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Compliance:Library
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