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Joint Dependence of Longwave Feedback on Surface Temperature and Relative Humidity
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2021
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Source: Geophysical Research Letters, 48(18)
[PDF-1.40 MB]
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Journal Title:Geophysical Research Letters
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Description:Various studies have suggested that Earth's clear-sky outgoing longwave radiation (OLR) varies linearly with surface temperature, with a longwave clear-sky feedback that is, independent of surface temperature and relative humidity. However, this uniformity conflicts with the notion that humidity controls tropical stability (e.g., the “furnace” and “radiator fins” of Pierrehumbert (1995, https:// doi.org/10.1175/1520-0469(1995)052%3C1784:TRFATL%3E2.0.CO;2 )). Here, we use a column model to explore the dependence of longwave clear-sky feedback on both surface temperature and relative humidity. We find that a strong humidity dependence in the feedback emerges above 275 K, which stems
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Source:Geophysical Research Letters, 48(18)
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DOI:
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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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