BROWSE

Related Researcher

Author

Kang, Sarah M.
Climate Dynamics Lab
Research Interests
  • Climate change, ITCZ, Atmospheric general circulation, Polar amplification

ITEM VIEW & DOWNLOAD

Dependence of climate response on meridional structure of external thermal forcing

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Dependence of climate response on meridional structure of external thermal forcing
Author
Kang, Sarah M.Xie, Shang-Ping
Keywords
Climate sensitivity; Cloud radiative effects; Temperature
Issue Date
201407
Publisher
AMER METEOROLOGICAL SOC
Citation
JOURNAL OF CLIMATE, v.27, no.14, pp.5593 - 5600
Abstract
This study shows that the magnitude of global surface warming greatly depends on the meridional distribution of surface thermal forcing. An atmospheric model coupled to an aquaplanet slab mixed layer ocean is perturbed by prescribing heating to the ocean mixed layer. The heating is distributed uniformly globally or confined to narrow tropical or polar bands, and the amplitude is adjusted to ensure that the global mean remains the same for all cases. Since the tropical temperature is close to a moist adiabat, the prescribed heating leads to a maximized warming near the tropopause, whereas the polar warming is trapped near the surface because of strong atmospheric stability. Hence, the surface warming is more effectively damped by radiation in the tropics than in the polar region. As a result, the global surface temperature increase is weak (strong) when the given amount of heating is confined to the tropical (polar) band. The degree of this contrast is shown to depend on water vapor-and cloud-radiative feedbacks that alter the effective strength of prescribed thermal forcing.
URI
Go to Link
DOI
http://dx.doi.org/10.1175/JCLI-D-13-00622.1
ISSN
0894-8755
Appears in Collections:
UEE_Journal Papers
Files in This Item:
84904490458.pdfDownload

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU