“Simpson's Law” and the Spectral Cancellation of Climate Feedbacks

Jeevanjee, Nadir; Koll, Daniel D. B.; Lutsko, Nicholas

doi:10.1029/2021gl093699

i

“Simpson's Law” and the Spectral Cancellation of Climate Feedbacks

Supporting Files

2021
By Jeevanjee, Nadir ; Koll, Daniel D. B. ; Lutsko, Nicholas

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Jeevanjee, Nadir ; Koll, Daniel D. B. ; Lutsko, Nicholas
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)
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
Keywords:

General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
Source:

Geophysical Research Letters, 48(14)
DOI:

https://doi.org/10.1029/2021gl093699
ISSN:

0094-8276 ; 1944-8007
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4310387
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha256:8cdaf475dc0167607a04981ac21460c118602b82a0cf8fb6dd22851da1a6bb99
Download URL:

https://repository.library.noaa.gov/view/noaa/53544/noaa_53544_DS1.pdf
File Type:

[PDF - 569.93 KB ]

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