...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Two Years of Observations of Warm-Core Anticyclones in the Labrador Sea and Their Seasonal Cycle in Heat and Salt Stratification
【24h】

Two Years of Observations of Warm-Core Anticyclones in the Labrador Sea and Their Seasonal Cycle in Heat and Salt Stratification

机译：拉布拉多海暖芯反气旋及其在热盐分层中的季节性周期的两年观测

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

Between 25 September 2007 and 28 September 2009, a heavily instrumented mooring was deployed in the Labrador Sea, offshore of the location where warm-core, anticyclonic Irminger rings are formed. The 2-year time series offers insight into the vertical and horizontal structure of newly formed Irminger rings and their heat and salt transport into the interior basin. In 2 years, 12 Irminger rings passed by the mooring. Of these, 11 had distinct properties, while 1 anticyclone likely passed the mooring twice. Eddy radii (11-35 km) were estimated using the dynamic height signal of the anticyclones (8-18 cm) together with the observed velocities. The anticyclones show a seasonal cycle in core properties when observed (1.9℃ in temperature and 0.07 in salinity at middepth) that has not been described before. The temperature and salinity are highest in fall and lowest in spring. Cold, fresh caps, suggested to be an important source of freshwater, were seen in spring but were almost nonexistent in fall. The heat and freshwater contributions by the Irminger rings show a large spread (from 12 to 108 MJ m~(-2) and from -0.5 to -4.7 cm, respectively) for two reasons. First, the large range of radii leads to large differences in transported volume. Second, the seasonal cycle leads to changes in heat and salt content per unit volume. This implies that estimates of heat and freshwater transport by eddies should take the distribution of eddy properties into account in order to accurately assess their contribution to the restratification.
机译：在2007年9月25日至2009年9月28日期间，在形成热芯，反气旋艾明格环的位置附近的拉布拉多海中部署了重型仪器系泊设备。两年的时间序列深入了解了新形成的艾明格环的垂直和水平结构，以及热量和盐分向内部盆地的传输。在2年中，有12枚Irminger戒指经过系泊设备。其中11个具有独特的特性，而1个反气旋可能通过了两次锚泊。利用反气旋的动态高度信号（8-18厘米）以及观测到的速度估算了涡旋半径（11-35公里）。当观察到时，反气旋显示出核心特性的季节性周期（温度为1.9℃，中深度盐度为0.07），这是以前没有描述的。温度和盐度在秋季最高，在春季最低。被认为是淡水的重要来源的冷鲜帽在春季出现，但在秋季几乎不存在。 Irminger环对热量和淡水的贡献表现出较大的扩展性（分别从12到108 MJ m〜（-2）和-0.5到-4.7 cm），这有两个原因。首先，大范围的半径导致运输量的巨大差异。其次，季节性周期导致单位体积中热量和盐含量的变化。这意味着对涡流的热量和淡水输送的估算应考虑涡流特性的分布，以便准确评估其对再定殖的贡献。

著录项

  • 来源
    《Journal of Physical Oceanography》 |2014年第2期|427-444|共18页
  • 作者

    M. F. de Jong; A. S. Bower; H. H. Furey;

  • 作者单位

    Woods Hole Oceanographic Institution, 266 Woods Hole Road, MS 21, Woods Hole, MA 02543;

    Woods Hole Oceanographic Institution, Woods Hole, Massachusetts;

    Woods Hole Oceanographic Institution, Woods Hole, Massachusetts;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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