登录
 机构网站
  1. 首页
  2. 情报产品
  3. 快讯详情

《Air–sea interaction over ocean fronts and eddies》

  • 来源专题：物理海洋学知识资源中心
  • 编译者： cancan
  • 发布时间：2018-11-14

  • Small R J, Deszoeke S P, Xie S P, et al. Air–sea interaction over ocean fronts and eddies.

    来源: Dynamics of Atmospheres & Oceans, 2008, 45(3):274-319.

    摘要: Air–sea interaction at ocean fronts and eddies exhibits positive correlation between sea surface temperature (SST), wind speed, and heat fluxes out of the ocean, indicating that the ocean is forcing the atmosphere. This contrasts with larger scale climate modes where the negative correlations suggest that the atmosphere is driving the system. This paper examines the physical processes that lie behind the interaction of sharp SST gradients and the overlying marine atmospheric boundary layer and deeper atmosphere, using high resolution satellite data, field data and numerical models. The importance of different physical mechanisms of atmospheric response to SST gradients, such as the effect of surface stability variations on momentum transfer, pressure gradients, secondary circulations and cloud cover will be assessed. The atmospheric response is known to create small-scale wind stress curl and divergence anomalies, and a discussion of the feedback of these features onto the ocean will also be presented. These processes will be compared and contrasted for different regions such as the Equatorial Front in the Eastern Pacific, and oceanic fronts in mid-latitudes such as the Gulf Stream, Kuroshio, and Agulhas Return Current.

    全文网址：https://www.sciencedirect.com/science/article/pii/S0377026508000341

  • 原文来源：https://www.sciencedirect.com/journal/dynamics-of-atmospheres-and-oceans
25浏览量
原文链接
相关报告

  • 《Climatological mean and decadal change in surface ocean pCO 2, and net sea–air CO 2, flux over the global oceans》
    • 来源专题：物理海洋学知识资源中心
    • 编译者：cancan
    • 发布时间：2018-11-14
    • Takahashi T, Sutherland S C, Wanninkhof R, et al. Climatological mean and decadal change in surface ocean pCO 2, and net sea–air CO 2, flux over the global oceans. 来源: Deep-Sea Research Part I, 2009, 56(11):2075-2076. 摘要: A climatological mean distribution for the surface water pCO2 over the global oceans in non-El Niño conditions has been constructed with spatial resolution of 4° (latitude) ×5° (longitude) for a reference year 2000 based upon about 3 million measurements of surface water pCO2 obtained from 1970 to 2007. The database used for this study is about 3 times larger than the 0.94 million used for our earlier paper [Takahashi et al., 2002. Global sea–air CO2 flux based on climatological surface ocean pCO2, and seasonal biological and temperature effects. Deep-Sea Res. II, 49, 1601–1622]. A time-trend analysis using deseasonalized surface water pCO2 data in portions of the North Atlantic, North and South Pacific and Southern Oceans (which cover about 27% of the global ocean areas) indicates that the surface water pCO2 over these oceanic areas has increased on average at a mean rate of 1.5 μatm y−1 with basin-specific rates varying between 1.2±0.5 and 2.1±0.4 μatm y−1. A global ocean database for a single reference year 2000 is assembled using this mean rate for correcting observations made in different years to the reference year. The observations made during El Niño periods in the equatorial Pacific and those made in coastal zones are excluded from the database. 全文网址：https://www.sciencedirect.com/science/article/pii/S0967064508004311
    24浏览量
    原文链接

  • 《Turbulent heat and momentum fluxes in the upper ocean under Arctic sea ice》
    • 来源专题：物理海洋学知识资源中心
    • 编译者：cancan
    • 发布时间：2018-11-14
    • Peterson A K, Fer I, Mcphee M G, et al. Turbulent heat and momentum fluxes in the upper ocean under Arctic sea ice. 来源:Journal of Geophysical Research Oceans, 2017, 122(2) 摘要: We report observations of heat and momentum fluxes measured in the ice-ocean boundary layer from four drift stations between January and June 2015, covering from the typical Arctic basin conditions in the Nansen Basin to energetic spots of interaction with the warm Atlantic Water branches near the Yermak Plateau and over the North Spitsbergen slope. A wide range of oceanic turbulent heat flux values are observed, reflecting the variations in space and time over the five month duration of the experiment. Oceanic heat flux is weakly positive in winter over the Nansen Basin during quiescent conditions, increasing by an order of magnitude during storm events. An event of local upwelling and mixing in the winter-time Nansen basin highlights the importance of individual events. Spring-time drift is confined to the Yermak Plateau and its slopes, where vertical mixing is enhanced. Wind events cause an approximate doubling of oceanic heat fluxes compared to calm periods. In June, melting conditions near the ice edge lead to heat fluxes of O(100 W m−2). The combination of wind forcing with shallow Atlantic Water layer and proximity to open waters leads to maximum heat fluxes reaching 367 W m−2, concurrent with rapid melting. Observed ocean-to-ice heat fluxes agree well with those estimated from a bulk parameterization except when accumulated freshwater from sea ice melt in spring probably causes the bulk formula to overestimate the oceanic heat flux. This article is protected by copyright. 全文网址：https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016JC012283
    154浏览量
    原文链接