气候变化领域集成服务门户(CCPortal): Wave climate in the Arctic 1992-2014: Seasonality and trends

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DOI	10.5194/tc-10-1605-2016
	Wave climate in the Arctic 1992-2014: Seasonality and trends
	Stopa J.E.; Ardhuin F.; Girard-Ardhuin F.
发表日期	2016
ISSN	19940416
卷号	10 期号:4
英文摘要	Over the past decade, the diminishing Arctic sea ice has impacted the wave field, which depends on the ice-free ocean and wind. This study characterizes the wave climate in the Arctic spanning 1992-2014 from a merged altimeter data set and a wave hindcast that uses CFSR winds and ice concentrations from satellites as input. The model performs well, verified by the altimeters, and is relatively consistent for climate studies. The wave seasonality and extremes are linked to the ice coverage, wind strength, and wind direction, creating distinct features in the wind seas and swells. The altimeters and model show that the reduction of sea ice coverage causes increasing wave heights instead of the wind. However, trends are convoluted by interannual climate oscillations like the North Atlantic Oscillation (NAO) and Pacific Decadal Oscillation. In the Nordic Greenland Sea the NAO influences the decreasing wind speeds and wave heights. Swells are becoming more prevalent and wind-sea steepness is declining. The satellite data show the sea ice minimum occurs later in fall when the wind speeds increase. This creates more favorable conditions for wave development. Therefore we expect the ice freeze-up in fall to be the most critical season in the Arctic and small changes in ice cover, wind speeds, and wave heights can have large impacts to the evolution of the sea ice throughout the year. It is inconclusive how important wave-ice processes are within the climate system, but selected events suggest the importance of waves within the marginal ice zone. © Author(s) 2016.
学科领域	hindcasting; marginal ice zone; North Atlantic Oscillation; Pacific Decadal Oscillation; satellite altimetry; sea ice; seasonality; wave climate; wave height; wind velocity; Arctic; Arctic Ocean; Greenland Sea; Norwegian Sea
语种	英语
scopus关键词	hindcasting; marginal ice zone; North Atlantic Oscillation; Pacific Decadal Oscillation; satellite altimetry; sea ice; seasonality; wave climate; wave height; wind velocity; Arctic; Arctic Ocean; Greenland Sea; Norwegian Sea
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/119611
作者单位	Univ. Brest, CNRS, IRD, Ifremer, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM, Brest, 29280, France; École Centrale de Nantes, Nantes, 44321, France
推荐引用方式 GB/T 7714	Stopa J.E.,Ardhuin F.,Girard-Ardhuin F.. Wave climate in the Arctic 1992-2014: Seasonality and trends[J],2016,10(4).
APA	Stopa J.E.,Ardhuin F.,&Girard-Ardhuin F..(2016).Wave climate in the Arctic 1992-2014: Seasonality and trends.Cryosphere,10(4).
MLA	Stopa J.E.,et al."Wave climate in the Arctic 1992-2014: Seasonality and trends".Cryosphere 10.4(2016).