DOI: 10.1175/JCLI-D-17-0600.1
Scopus记录号: 2-s2.0-85047063232
论文题名: Contrasting local and remote impacts of surface heating on polar warming and amplification
作者: Park K. ; Kang S.M. ; Kim D. ; Stuecker M.F. ; Jin F.-F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 8 起始页码: 3155
结束页码: 3166
语种: 英语
英文关键词: Climate change
; Energy transport
; Feedback
Scopus关键词: Climate change
; Feedback
; Greenhouse gases
; Heating
; Cloud radiative effects
; Energy transport
; External heating
; Greenhouse gas (GHG)
; Poleward heat transport
; Relative contribution
; Temperature response
; Warming patterns
; Amplification
英文摘要: The polar region has been one of the fastest warming places on Earth in response to greenhouse gas (GHG) forcing. Two distinct processes contribute to the observed warming signal: (i) local warming in direct response to the GHG forcing and (ii) the effect of enhanced poleward heat transport from low latitudes. A series of aquaplanet experiments, which excludes the surface albedo feedback, is conducted to quantify the relative contributions of these two physical processes to the polar warming magnitude and degree of amplification relative to the global mean. The globe is divided into zonal bands with equal area in eight experiments. For each of these, an external heating is prescribed beneath the slab ocean layer in the respective forcing bands. The summation of the individual temperature responses to each local heating in these experiments is very similar to the response to a globally uniform heating. This allows the authors to decompose the polar warming and amplification signal into the effects of local and remote heating. Local polar heating that induces surface-trapped warming due to the large tropospheric static stability in this region accounts for about half of the polar surface warming. Cloud radiative effects act to enhance this local contribution. In contrast, remote nonpolar heating induces a robust polar warming pattern that features a midtropospheric peak, regardless of the meridional location of the forcing. Among all remote forcing experiments, the deep tropical forcing case contributes most to the polar-amplified surface warming pattern relative to the global mean, while the high-latitude forcing cases contribute most to enhancing the polar surface warming magnitude. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111599
Appears in Collections: 气候减缓与适应
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作者单位: School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Cooperative Programs for the Advancement of Earth System Science, University Corporation for Atmospheric Research, Boulder, CO, United States; Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology, University of Hawai'i at Manoa, Honolulu, HI, United States
Recommended Citation:
Park K.,Kang S.M.,Kim D.,et al. Contrasting local and remote impacts of surface heating on polar warming and amplification[J]. Journal of Climate,2018-01-01,31(8)