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DOI	10.1175/JCLI-D-19-0761.1
	Impacts of oceanic and atmospheric heat transports on sea ice extent
	Aylmer J.; Ferreira D.; Feltham D.
发表日期	2020
ISSN	0894-8755
起始页码	7197
结束页码	7215
卷号	33 期号:16
英文摘要	Climate-model biases in ocean heat transport (OHT) have been proposed as a major contributor to uncertainties in projections of sea ice extent. To better understand the impact of OHT on sea ice extent and compare it to that of atmospheric heat transport (AHT), an idealized, zonally averaged energy balance model (EBM) is developed. This is distinguished from previous EBM work by coupling a diffusive mixed layer OHT and a prescribed OHT contribution, with an atmospheric EBM and a reduced-complexity sea ice model. The ice-edge latitude is roughly linearly related to the convergence of each heat transport component, with different sensitivities depending on whether the ice cover is perennial or seasonal. In both regimes, Bjerknes compensation (BC) occurs such that the response of AHT partially offsets the impact of changing OHT. As a result, the effective sensitivity of ice-edge retreat to increasing OHT is only;2/3 of the actual sensitivity (i.e., eliminating the BC effect). In the perennial regime, the sensitivity of the ice edge to OHT is about twice that to AHT, while in the seasonal regime they are similar. The ratio of sensitivities is, to leading order, determined by atmospheric longwave feedback parameters in the perennial regime. Here, there is no parameter range in which the ice edge is more sensitive to AHT than OHT. © 2020 American Meteorological Society
英文关键词	Climate models; Heat transfer; Sea ice; Atmospheric heat; Energy balance models; Feedback parameters; Leading orders; Ocean heat transport; Parameter range; Reduced complexity; Sea ice modeling; Atmospheric movements; air-sea interaction; climate modeling; energy balance; heat transfer; longwave radiation; mixed layer; sea ice
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171185
作者单位	Department of Meteorology, University of Reading, Reading, United Kingdom; Centre for Polar Observation and Modelling, Department of Meteorology, University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Aylmer J.,Ferreira D.,Feltham D.. Impacts of oceanic and atmospheric heat transports on sea ice extent[J],2020,33(16).
APA	Aylmer J.,Ferreira D.,&Feltham D..(2020).Impacts of oceanic and atmospheric heat transports on sea ice extent.Journal of Climate,33(16).
MLA	Aylmer J.,et al."Impacts of oceanic and atmospheric heat transports on sea ice extent".Journal of Climate 33.16(2020).