The Influence of Climate Feedbacks on Regional Hydrological Changes Under Global Warming

Bonan, David B.; Feldl, Nicole; Siler, Nicholas; Kay, Jennifer E.; Armour, Kyle C.; Eisenman, Ian; Roe, Gerard H.

doi:10.1029/2023gl106648

i

The Influence of Climate Feedbacks on Regional Hydrological Changes Under Global Warming

2024
By Bonan, David B. ; Feldl, Nicole ; Siler, Nicholas ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Bonan, David B. ; Feldl, Nicole ; Siler, Nicholas ; Kay, Jennifer E. ; Armour, Kyle C. ; Eisenman, Ian ; Roe, Gerard H.
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:

The influence of climate feedbacks on regional hydrological changes under warming is poorly understood. Here, a moist energy balance model (MEBM) with a Hadley Cell parameterization is used to isolate the influence of climate feedbacks on changes in zonal‐mean precipitation‐minus‐evaporation (P − E) under greenhouse‐gas forcing. It is shown that cloud feedbacks act to narrow bands of tropical P − E and increase P − E in the deep tropics. The surface‐albedo feedback shifts the location of maximum tropical P − E and increases P − E in the polar regions. The intermodel spread in the P − E changes associated with feedbacks arises mainly from cloud feedbacks, with the lapse‐rate and surface‐albedo feedbacks playing important roles in the polar regions. The P − E change associated with cloud feedback locking in the MEBM is similar to that of a climate model with inactive cloud feedbacks. This work highlights the unique role that climate feedbacks play in causing deviations from the “wet‐gets‐wetter, dry‐gets‐drier” paradigm.
Source:

Geophysical Research Letters, 51(3)
DOI:

https://doi.org/10.1029/2023gl106648
ISSN:

0094-8276 ; 1944-8007
Format:

pdf
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

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

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha-512:834d9b74b585cd7f9302b59e99ea0d1a7527a25436fd5ef4c72ba0b3c32d4847c165039b0e508c3154c9c0c0ce3364db49b258d5ed043c2b9edbd17cffc17e2d
Download URL:

https://repository.library.noaa.gov/view/noaa/68603/noaa_68603_DS1.pdf
File Type:

[PDF - 1.62 MB ]

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