...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of oceanography >Frontolysis by surface heat flux in the eastern Japan Sea: importance of mixed layer depth
【24h】

Frontolysis by surface heat flux in the eastern Japan Sea: importance of mixed layer depth

机译：东日本海表面热通量的前溶作用：混合层深度的重要性

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

Frontolysis mechanisms by which surface heat flux relaxes the sea surface temperature (SST) front in the eastern Japan Sea (JS) are investigated in detail using observational datasets. On the warm southern side of the front, larger air-sea specific humidity and temperature differences induce stronger turbulent heat release compared to the cool northern side. As a result, stronger wintertime cooling and weaker summertime warming occur south of the front, and the meridional gradient in the surface net heat flux (NHF) tends to relax the SST front throughout the year. In the mixed-layer deepening phase (September-January), a higher entrainment velocity occurs on the warm southern side because of weaker stratification. Since the resulting thicker mixed layer on the southern side is less sensitive to surface cooling, the mixed layer depth (MLD) gradient damps the frontolysis by the NHF gradient. In the shoaling phase (April-June), a deeper mixed layer south of the front is caused by the weaker warming and reduced sensitivity of the thicker mixed layer to a shoaling effect by shortwave radiation. Owing to weaker sensitivity of the thicker mixed layer on the southern side to surface warming, the MLD gradient enhances the frontolysis by the NHF gradient. Therefore, it is shown that the mixed layer processes cause seasonality of weaker (stronger) frontolysisby surface heat fluxes, damping (enhancing) the frontolysis by the NHF gradient in winter (summer). This study reveals unique features of the frontolysis in the eastern JS compared with the Agulhas Return Current and Kuroshio Extension regions.
机译：使用观测数据集详细研究了表面热通量放松东日本海（JS）的海面温度（SST）前沿的额解机制。在正面温暖的南部，与凉爽的北部相比，更大的海气比湿度和温度差会引起更强的湍流热释放。结果，在锋面的南部发生了更强的冬季降温和较弱的夏季变暖，并且表层净热通量（NHF）的子午梯度趋于使全年的SST锋面松弛。在混合层加深阶段（9月至1月），由于较弱的分层，较高的夹带速度在温暖的南侧发生。由于在南侧生成的较厚的混合层对表面冷却较不敏感，因此混合层深度（MLD）梯度通过NHF梯度抑制了正面溶解。在浅滩阶段（4月至6月），由于较弱的变暖和较厚的混合层对短波辐射造成的浅滩效应的敏感性降低，导致前部南部的混合层更深。由于南侧较厚的混合层对表面变暖的敏感性较弱，因此MLD梯度会通过NHF梯度来增强锋线分解作用。因此，显示出混合层过程通过表面热通量导致季节变弱的季节（强），而冬季（夏季）则通过NHF梯度抑制（增加）额层的分解。这项研究揭示了与Agulhas Return Current和Kuroshio Extension地区相比，JS东南部的前溶作用的独特特征。

著录项

  • 来源
    《Journal of oceanography》 |2019年第3期|283-297|共15页
  • 作者

    Ohishi Shun; Aiki Hidenori; Tozuka Tomoki; Cronin Meghan F.;

  • 作者单位

    Nagoya Univ, Inst Space Earth Environm Res, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan;

    Nagoya Univ, Inst Space Earth Environm Res, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan|Japan Agcy Marine Earth Sci & Technol, Applicat Lab, Yokohama, Kanagawa, Japan;

    Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan|Japan Agcy Marine Earth Sci & Technol, Applicat Lab, Yokohama, Kanagawa, Japan;

    NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Frontolysis; Mixed layer processes; Entrainment; Japan Sea; Sea surface temperature front;

    机译：额解;混合过程;夹带;日本海;海面温度锋;

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