globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-14-00591.1
Scopus记录号: 2-s2.0-84949883891
论文题名:
Variability and trends in surface meteorology and air-sea fluxes at a site off northern Chile
作者: Weller R.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期:8
起始页码: 3004
结束页码: 3023
语种: 英语
Scopus关键词: Meteorology ; Oceanography ; Weather forecasting ; Wind ; Wind stress ; Air-sea exchange ; Air-sea heat flux ; Annual variability ; Atmosphere-ocean coupling ; Interannual variability ; Numerical weather prediction models ; Short-wave radiation ; Stratocumulus clouds ; Heat flux
英文摘要: Time series of surface meteorology and air-sea exchanges of heat, freshwater, and momentum collected from a long-term surface mooring located 1600 km west of the coast of northern Chile are analyzed. The observations, spanning 2000-10, have been withheld from assimilation into numerical weather prediction models. As such, they provide a unique in situ record of atmosphere-ocean coupling in a trade wind region characterized by persistent stratocumulus clouds. The annual cycle is described, as is the interannual variability. Annual variability in the air-sea heat flux is dominated by the annual cycle in net shortwave radiation. In austral summer, the ocean is heated; the 9-yr mean annual heating of the ocean is 38Wm-2. Ocean cooling is seen in 2006-08, coincident with La Niña events. Over the full record, significant trends were found. Increases in wind speed, wind stress, and latent heat flux over 9 yr were 0.8ms-1, 0.022Nm-2, and 20Wm-2 or 13%, 29%, and 20% of the respective 9-yr means. The decrease in the annual mean net heat flux was 39Wm-2 or 104% of the mean. These changes were found to be largely associated with spring and fall. If this change persists, the annual mean net air-sea heat flux will change sign by 2016, when the magnitude of the wind stress will have increased by close to 60%. © 2015 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50705
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作者单位: Woods Hole Oceanographic Institution, Woods Hole, MA, United States

Recommended Citation:
Weller R.A.. Variability and trends in surface meteorology and air-sea fluxes at a site off northern Chile[J]. Journal of Climate,2015-01-01,28(8)
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