北极/北大西洋大气的变化导致韩国发生严重的PM事件
Jeong-Hun Kim1, Maeng-Ki Kim2, Seong-Joong Kim3
1Department of Atmospheric Sciences, Kongju National University, Gongju 32588, Republic of Korea; Division of Atmospheric Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Earth Environment Research Center, Kongju National University, Gongju 32588, Republic of Korea.
The Science of the total environment
|January 4, 2024
概括
韩国严重的颗粒物事件 (PM10) 与特定的大气模式有关. 新的研究确定了从北大西洋和北极的远程连接路径,通过削弱空气循环引起这些高污染事件.
科学领域:
- 大气科学 大气科学
- 环境科学 环境科学
- 气候学 气候学 气候学
背景情况:
- 韩国严重的颗粒物事件 (PM10) 与稳定的大气循环和上层热层高压异常有关.
- 这些特定的大气循环模式的根本原因在很大程度上仍未知.
研究的目的:
- 为了调查大规模的远程连接通道,负责在韩国中冬期间严重的PM10事件.
- 确定有助于极高 (EH) -PM10事件的大气因素.
主要方法:
- K-意味着集群分析以确定与EH-PM10事件相关的大气远程连接模式.
- 利用线性巴洛克林尼克模型来测试上游大气强迫的影响.
主要成果:
- 确定了两个不同的大型远程连接模式:一个来自北大西洋通过欧亚大陆,另一个来自巴伦茨-卡拉海.
- 来自北大西洋和北极的罗斯比波削弱了表面压力系统,在韩国创造了高压异常.
- 这些异常减少了大气通风,导致PM10度迅速增加.
结论:
- 来自北极和北大西洋的大规模远程连接模式通过调节通风来显著影响韩国的PM10水平.
- 了解这些远程连接可以帮助制定减排战略和对严重的PM10事件的短期预测.
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