DOI: 10.1175/JCLI-D-15-0190.1
Scopus记录号: 2-s2.0-84947105275
论文题名: Historical changes in the Beaufort-Chukchi-Bering Seas surface winds and waves, 1971-2013
作者: Wang X.L. ; Feng Y. ; Swail V.R. ; Cox A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 19 起始页码: 7457
结束页码: 7469
语种: 英语
Scopus关键词: Climate change
; Climatology
; Sea ice
; Surface waves
; Wave energy conversion
; Wind
; Climate variability
; Historical changes
; Interannual variability
; Ocean surface waves
; Oceanic variabilities
; Significant wave height
; Surface wind speed
; Trends
; Water waves
; annual variation
; climate variation
; significant wave height
; surface wind
; trend analysis
; wind direction
; wind velocity
; Arctic Ocean
; Beaufort Sea
; Bering Sea
; Canada
; Chukchi Sea
; Pacific Ocean
英文摘要: This study characterizes historical changes in surface wind speed and ocean surface waves in the Beaufort- Chukchi-Bering Seas using Environment Canada's Beaufort Wind and Wave Reanalysis for the period 1970-2013. The results show that both the significant wave height (Hs) and mean wave period (Tm) have increased significantly over the Bering Sea in July and August and over the Canadian Beaufort Sea westward to the northern Bering Sea in September, and that the 1992-2013 trends in September mean Hs agree well with satellite-based trend estimates for 1993-2010. Most outstandingly, the regional mean Tm has increased at a rate of 3%-4% yr-1 of the corresponding 1970-99 climatology; it has more than tripled since 1970. Also, the regional mean Hs has increased at a rate of 0.3% to 0.8% yr-1. The trends of lengthening wave period and increasing wave height imply a trend of increasing wave energy flux, providing a mechanism to break up sea ice and accelerate ice retreat. The results also show that changes in the local wind speeds alone cannot explain the significant changes in waves. The wind speeds show significant increases over the Bering Sea to the north of Alaska in July and over the central part of the domain in August and September, with decreases in the region off the Canadian coasts in August. In the region west of the Canadian coast, the climatological mean wind direction has rotated clockwise in July and August, with the climatological anticyclonic center being displaced northeastward in August. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50603
Appears in Collections: 气候变化事实与影响
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作者单位: Climate Research Division, Science and Technology Branch, Environment Canada, Toronto, ON, Canada; Oceanweather, Inc., Cos Cob, CT, United States
Recommended Citation:
Wang X.L.,Feng Y.,Swail V.R.,et al. Historical changes in the Beaufort-Chukchi-Bering Seas surface winds and waves, 1971-2013[J]. Journal of Climate,2015-01-01,28(19)