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Stronger local overturning in convective-permitting regional climate model improves simulation of the subtropical annual cycle

Abstract:

Global climate models fail to represent the annual cycle of tropical-extratropical cloud bandsand produce too much summer rainfall over subtropical southern Africa. This study demonstrates thatrunning a regional convective-permitting climate simulation alleviates these biases, counteracting biasesthat are present in the parent model. The improvement emerges from stronger vertical mass flux in thetropics, which forces a stronger local Hadley overturning into the summer hemisphere. This enhanced...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1029/2018GL079563

Authors


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Institution:
University of Oxford
Division:
SSD
Department:
SOGE
Sub department:
Geography
Oxford college:
Christ Church
Role:
Author
ORCID:
0000-0002-6902-8699
More by this author
Institution:
University of Oxford
Division:
Social Sciences Division
Department:
SOGE
Sub department:
Geography
Role:
Author
More from this funder
Name:
Natural Environment Research Council
Grant:
NE/M020207/1
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Name:
UK Department for International Development
More from this funder
Name:
Future Climate for Africa UMFULA project
Publisher:
American Geophysical Union
Journal:
Geophysical Research Letters More from this journal
Volume:
45
Issue:
20
Pages:
11,334-11,342
Publication date:
2018-10-09
Acceptance date:
2018-10-05
DOI:
EISSN:
1944-8007
ISSN:
0094-8276
Keywords:
Pubs id:
pubs:926689
UUID:
uuid:adb1a42f-88d7-4e18-9a59-61d59912387b
Local pid:
pubs:926689
Source identifiers:
926689
Deposit date:
2018-10-11

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