气候变化领域集成服务门户(CCPortal): Evaluation of Arctic sea ice drift and its dependency on near-surface wind and sea ice conditions in the coupled regional climate model HIRHAM-NAOSIM

CCPortal

DOI	10.5194/tc-14-1727-2020
	Evaluation of Arctic sea ice drift and its dependency on near-surface wind and sea ice conditions in the coupled regional climate model HIRHAM-NAOSIM
	Yu X.; Rinke A.; Dorn W.; Spreen G.; Lüpkes C.; Sumata H.; Gryanik V.M.
发表日期	2020
ISSN	19940416
起始页码	1727
结束页码	1746
卷号	14 期号:5
英文摘要	We examine the simulated Arctic sea ice drift speed for the period 2003-2014 in the coupled Arctic regional climate model HIRHAM-NAOSIM 2.0. In particular, we evaluate the dependency of the drift speed on the near-surface wind speed and sea ice conditions. Considering the seasonal cycle of the Arctic basin averaged drift speed, the model reproduces the summer-autumn drift speed well but significantly overestimates the winter-spring drift speed, compared to satellite-derived observations. Also, the model does not capture the observed seasonal phase lag between drift and wind speed, but the simulated drift speed is more in phase with the near-surface wind. The model calculates a realistic negative correlation between drift speed and ice thickness and between drift speed and ice concentration during summer-autumn when the ice concentration is relatively low, but the correlation is weaker than observed. A daily grid-scale diagnostic indicates that the model reproduces the observed positive correlation between drift and wind speed. The strongest impact of wind changes on drift speed occurs for high and moderate wind speeds, with a low impact for rather calm conditions. The correlation under low-wind conditions is overestimated in the simulations compared to observation/ reanalysis data. A sensitivity experiment demonstrates the significant effects of sea ice form drag from floe edges included by an improved parameterization of the transfer coefficients for momentum and heat over sea ice. However, this does not improve the agreement of the modeled drift speed / wind speed ratio with observations based on reanalysis data for wind and remote sensing data for sea ice drift. An improvement might be achieved by tuning parameters that are not well established by observations. © Author(s) 2020.
英文关键词	climate modeling; coupling; drag; ice drift; ice thickness; parameterization; regional climate; sea ice; surface wind; wind velocity; Arctic Ocean
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202260
作者单位	Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam, Germany; School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, China; Institute of Environmental Physics, University of Bremen, Bremen, Germany; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Ocean and Sea Ice, Norwegian Polar Institute, Tromsø, Norway
推荐引用方式 GB/T 7714	Yu X.,Rinke A.,Dorn W.,et al. Evaluation of Arctic sea ice drift and its dependency on near-surface wind and sea ice conditions in the coupled regional climate model HIRHAM-NAOSIM[J],2020,14(5).
APA	Yu X..,Rinke A..,Dorn W..,Spreen G..,Lüpkes C..,...&Gryanik V.M..(2020).Evaluation of Arctic sea ice drift and its dependency on near-surface wind and sea ice conditions in the coupled regional climate model HIRHAM-NAOSIM.Cryosphere,14(5).
MLA	Yu X.,et al."Evaluation of Arctic sea ice drift and its dependency on near-surface wind and sea ice conditions in the coupled regional climate model HIRHAM-NAOSIM".Cryosphere 14.5(2020).