...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Theoretical and applied climatology >Impact of local atmospheric circulation and sea surface temperature of the East Sea (Sea of Japan) on heat waves over the Korean Peninsula
【24h】

Impact of local atmospheric circulation and sea surface temperature of the East Sea (Sea of Japan) on heat waves over the Korean Peninsula

机译：朝鲜半岛东海（日本海洋）局部大气循环和海景温度的影响

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

摘要

South Korea has frequently suffered from heat waves, which are mainly attributable to anomalously prolonged high-pressure systems. There have been many studies regarding the role of large-scale circulation in the Korean Peninsula heatwaves, but the contribution of local-scale circulation and sea surface temperature has not been analyzed. This study investigates the impact of local circulation and sea surface temperature (SST) of the East Sea (Sea of Japan) on the surface temperature variations of the Korean Peninsula. Based on empirical orthogonal function (EOF) analysis of the detrended daily surface temperature anomalies from July to August, 1991-2020, high-temperature days were classified into three categories: high pressure (HP), easterly wind (EW), and both high pressure and easterly wind (HPEW). On EW days, the mean surface temperatures in the western part of the peninsula are 1.75 degrees C higher than those on the eastern part of the windward side, indicating foehn wind warming on the leeward side. Under the synergistic effects of foehn wind warming and high-pressure anomalies, the surface temperature is the highest on HPEW days. Regression analysis also shows that, when the SST of the East Sea increased by 1 degrees C, the surface temperatures in the western region on HPEW and EW days increased by 0.36 degrees C and 0.22 degrees C, respectively. In contrast, the SST effect in the western region is negligible on HP days owing to the lack of foehn wind warming. Sensitivity experiments using the high-resolution Weather Research and Forecasting (WRF) model also showed that foehn wind warming becomes stronger on EW and HPEW days with warmer East Sea SST. Our results suggest that local circulation and SST are important factors in high-temperature events in the Korean Peninsula.
机译：韩国经常遭受热浪，主要是占大使延长的高压系统。有很多关于大规模循环在朝鲜半岛热浪中的作用的研究，但局部循环和海面温度的贡献尚未分析。本研究调查了东海（日本海洋）对朝鲜半岛的表面温度变化的影响和海面温度（SST）的影响。基于经验正交功能（EOF）分析7月至8月至8月，1991 - 2020年8月，高温天数分为三类：高压（HP），东风（EW），以及高压力和东风（HPEW）。在EW天，半岛西部的平均表面温度高于迎风侧的东部的1.75摄氏度，指示在背风侧升温的FOEHN风。在FOEHN风暖和高压异常的协同作用下，表面温度在HPEW天中最高。回归分析还表明，当东海的SST增加1摄氏度时，西部地区对HPEW和EW天的表面温度分别增加0.36℃和0.22摄氏度。相比之下，由于缺乏FOEHN风暖，西部地区的SST效果可以忽略不计。使用高分辨率的天气研究和预测（WRF）模型的敏感性实验还表明，在EW和HPEW天中，FOEHN风变暖变得更加温暖。我们的研究结果表明，本地循环和SST是朝鲜半岛高温事件中的重要因素。

著录项

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