...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Mean full-depth summer circulation and transports at the northern periphery of the Atlantic Ocean in the 2000s
【24h】

Mean full-depth summer circulation and transports at the northern periphery of the Atlantic Ocean in the 2000s

机译：2000年代大西洋北缘的夏季全周平均流通量和运输量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A mean state of the full-depth summer circulation in the Atlantic Ocean in the region in between Cape Farewell (Greenland),Scotland and the Greenland-Scotland Ridge (GSR) is assessed by combining 2002-2008 yearly hydrographic measurements at 59.5°N,mean dynamic topography, satellite altimetry data and available estimates of the Atlantic—Nordic Seas exchange.The mean absolute transports by the upper-ocean, mid-depth and deep currents and the Meridional Overturning Circulation (MOCσ = 16.5 ± 2.2 Sv,at σ_0 = 27.55) at 59.5°N are quantified in the density space.Inter-basin and diapycnal volume fluxes in between the 59.5°N section and the GSR are then estimated from a box model. The dominant components of the meridional exchange across 59.5°N are the North Atlantic Current (NAC,15.5 ± 0.8 Sv,σ_0 < 27.55) east of the Reykjanes Ridge,the northward Irminger Current (IC, 12.0 ± 3.0 Sv) and southward Western Boundary Current (WBC, 32.1 + 5.9 Sv) in the Irminger Sea and the deep water export from the northern Iceland Basin (3.7 ± 0.8 Sv,σ_0 > 27.80).About 60% (12.7 ± 1.4 Sv) of waters carried in the MOCσ upper limb (σ_0 < 27.55) by the NAC/IC across 59.5°N (21.1 ± 1.0 Sv) recirculates westward south of the GSR and feeds the WBC.80% (10.2 ± 1.7 Sv) of the recirculating NAC/IC-derived upper-ocean waters gains density of σ_0 > 27.55 and contributes to the MOCσ lower limb.Accordingly,the contribution of light-to-dense water conversion south of the GSR (～10 Sv) to the MOCσ lower limb at 59.5°N is one and a half times larger than the contribution of dense water production in the Nordic Seas (～6 Sv).
机译：通过结合2002-2008年59.5°N的年度水文学测量结果，评估了告别海角（格陵兰），苏格兰和格陵兰-苏格兰脊（GSR）之间的大西洋夏季全深度平均水平，平均动态地形，卫星测高数据以及大西洋-北欧海交换的可用估算值。洋流，中深度和深流以及子午翻转环流的平均绝对输运量（MOCσ= 16.5±2.2 Sv，在σ_0=在密度为59.5°N的空间中对27.55）进行定量，然后根据盒模型估算59.5°N断面与GSR之间的盆地之间和两面的通量。跨59.5°N的子午交换的主要成分是雷克雅尼斯海脊以东的北大西洋海流（NAC，15.5±0.8 Sv，σ_0<27.55），北向的艾明格海流（IC，12.0±3.0 Sv）和南侧的西边界当前在艾明格海中的水（WBC，32.1 + 5.9 Sv）和冰岛盆地北部的深水出口（3.7±0.8 Sv，σ_0> 27.80）.MOCσ上部携带的水约占60％（12.7±1.4 Sv） NAC / IC在59.5°N（21.1±1.0 Sv）的四肢（σ_0<27.55）沿GSR向南再循环，并向WBC供水。80％（10.2±1.7 Sv）的再循环NAC / IC衍生的上层-海洋水的密度为σ_0> 27.55，并有助于MOCσ下肢。因此，在59.5°N处，GSR以南（〜10 Sv）的轻到密水转换对MOCσ下肢的贡献是一和一。比北欧海（〜6 Sv）浓水生产的贡献大一半。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号