• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanographic Literature Review >Observational analysis of extratropical cyclone interactions with northeast pacific sea surface temperature anomalies
【24h】

Observational analysis of extratropical cyclone interactions with northeast pacific sea surface temperature anomalies

机译：与东北太平洋海洋温度异常的潜在旋风间相互作用的观察分析

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

This study examines the interaction between a northeast Pacific upper-ocean thermal anomaly and individual fall storm events between 2013 and 2016. In 2013, a large upper-ocean thermal anomaly formed in the Gulf of Alaska (GOA) with sea surface temperatures (SST) warmer than 48C above the climatological norm. Formation of the anomaly was associated with a persistent atmospheric ridge in theGOAthat produced a lull in storm activity in the boreal winter of 2013/14. While reduced storm activity was the apparent cause of this SST anomaly, we present cases where extratropical cyclones significantly eroded its mixed layer heat content on synoptic time scales. Case studies during the 4-yr period 2013-16 using satellite and Argo hydrographic observations show that early fall storms produced the largest surface heat fluxes and the greatest cooling of SST. The magnitude of thermal energy transfer from the ocean to the atmosphere during individual storm events was then determined using vertically integrated heat budgets based on Argo temperature profiles and reanalysis surface heat fluxes. Storm-induced surface heat flux anomalies accounted for approximately 50% of the warm anomaly cooling observed by Argo profiles. This rapid heat loss occurred over time scales of approximately 3-5 days. The decay of the warm SST anomaly (SSTa) occurred much more quickly than expected from classic thermal damping by SST-induced turbulent heat fluxes, which may be attributed here at least partly to much shallower mixed layers during early fall. Analysis of the individual surface flux terms indicated that the latent heat flux was the dominant contributor to storm-induced heat exchange across the air-sea interface.
机译：本研究探讨了2013年至2016年东北太平洋高海洋热异常和个人秋季风暴事件之间的互动。2013年，在阿拉斯加湾（果阿）的大型海洋热异常，海景温度（SST）比48℃更温暖，高于气候常态。异常的形成与Thegoathat的持续的大气脊有关，在2013/14年的北冬季产生了暴风雨活动。虽然降低风暴活动是该SST异常的明显原因，但我们存在潜水旋风器在概要时间尺度上显着侵蚀其混合层热含量的情况。案例研究在2013-16期间使用卫星和Argo水文观测结果表明，早期暴风雨产生了最大的表面热量和最大的SST冷却。然后使用基于Argo温度曲线和再分析表面热通量的垂直集成的热预算确定从海洋的热能转移到大气的大气。风暴诱导的表面热通量异常占ARGO型材观察到的温暖异常冷却的50％。这种快速的热量损失发生在大约3-5天的时间尺度上。 SST异常（SSTA）的衰减发生得比经过SST诱导的湍流热通量从经典的热阻尼的预期迅速地发生，这可能在此归因于早期秋季期间的较浅的混合层。对各个表面助焊剂术语的分析表明，潜热通量是风暴引起的横跨空中海界面的热交换的主要因素。

著录项

  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2116-2116|共1页
  • 作者

    B. PHILLIPS; L. ONEILL;

  • 作者单位

    College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis OR United States;

    College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis OR United States;

  • 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