...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Is the Ocean Speeding Up? Ocean Surface Energy Trends
【24h】

Is the Ocean Speeding Up? Ocean Surface Energy Trends

机译：海洋加快了吗？ 海面能量趋势

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 recent paper by Hu et al. (https://doi.org/10.1126/sciadv.aax7727) has raised the interesting question of whether the ocean circulation has been "speeding up" in the last decades. Their result contrasts with some estimates of the lack of major trends in oceanic surface gravity waves and wind stress. In general, both the increased energy and implied power inputs of the calculated circulation correspond to a small fraction of the very noisy background values. An example is the implied power increase of about 3 × 10~8 W, as compared to wind energy inputs of order 10~(12) W. Here the problem is reexamined using a state estimate that has the virtue of being energy, mass, etc. conserving. Because it is an estimate over an entire recent 26-yr interval, it is less sensitive to the strong changes in observational data density and distribution, and it does not rely upon nonconservative "reanalyses." The focus is on the energy lying in the surface layers of the ocean. A potential energy increase is found, but it is almost completely unavailable-arising from the increase in mean sea level. A weak increase in kinetic energy in the top layer (10m) is confirmed, corresponding to an increase of order 1 cms~(-1) yr~(-1) over 26 years. An estimate of kinetic energy in the full water column shows no monotonic trend, but the changes in the corresponding available potential energy are not calculated here.
机译：胡等人最近的一篇文章。 （https://doi.org/10.1126/sciadv.aax7727）已经提出了是否大洋环流已经在过去几十年“加快”一个有趣的问题。他们的结果与对比的缺乏海洋表面引力波和风应力主要趋势一些估计。一般情况下，无论是增加的能量和所计算出的循环对应于非常嘈杂背景值的一小部分的隐含功率输入。一个例子是大约为3×10 -8 W的隐含功率增加，相比于顺序10〜（12）的风的能量输入W.这里的问题是使用状态估计具有由于是能量，质量复查，等节约。因为它是在整个最近26年的间隔的估计值，它是在观测数据密度和分布的变化强较不敏感，而且它不依赖于非保守的“再分析”。重点是能量躺在海洋表面层。一个潜在的能量增加被发现，但它几乎是完全不可用，产生在平均海平面上升。在顶层（10米）的弱增加动能被确认，相应的增加的顺序1厘米〜（-1）年〜（-1）超过26年。在满水根柱显示单调趋势动能的估计，但在相应的可用势能的变化在这里没有计算。

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