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https://repository.kopri.re.kr/handle/201206/9422
2024-01-21T05:09:47ZArctic/North Atlantic atmospheric variability causes severe PM10 events in South Korea
https://repository.kopri.re.kr/handle/201206/15089
Title: Arctic/North Atlantic atmospheric variability causes severe PM10 events in South Korea
Authors: 김정훈; 김맹기; Kim, Seong-Joong; Kim, Joo-Hong; 예상욱; 이상현; 이영석
Abstract: Severe PM10 (particulate matter with a diameter of <10 μm) events in South Korea are known to be caused by stable atmospheric circulation conditions related to high-pressure anomalies in the upper troposphere. However, research on why these atmospheric circulation patterns occur is unknown. In this study, we propose new large-scale teleconnection pathways that cause severe PM10 events during the midwinter in South Korea. This study investigated instances of extremely high (EH)-PM10 in South Korea during mid-winter and examined the corresponding atmospheric teleconnection patterns to identify the factors contributing to EH-PM10 events. K-means clustering analysis revealed that EH-PM10 instances were associated with two large-scale teleconnection patterns. Cluster 1 exhibited a wave train pattern originating in the North Atlantic that developed from Eurasia to the Korean Peninsula. Cluster 2 was associated with a wave-like teleconnection pattern from the Barents-Kara Sea to the Korean Peninsula. The Rossby waves, triggered by the North Atlantic and the Arctic, propagated and weakened the surface pressure system. This led to a high-pressure anomaly over the Korean Peninsula, reducing atmospheric ventilation and causing a rapid increase in PM10 concentration within a few days. Furthermore, an experiment involving a linear baroclinic model established that atmospheric forcing in upstream regions has the potential to induce large-scale atmospheric teleconnection patterns, resulting in EH-PM10 cases in South Korea. These findings emphasize the ventilation effect and transport of PM10 concentrations modulated by two large-scale teleconnection patterns originating from the Arctic and North Atlantic, leading to EH-PM10 events in South Korea. Understanding this combined phenomenon may assist in the implementation of emission reduction measures based on the results of short-term forecasts of severe PM10 events.2024-01-01T00:00:00ZInterrelationship Investigation and Comprehensive Monitoring based on Permafrost-Atmospheric Environment
https://repository.kopri.re.kr/handle/201206/14763
Title: Interrelationship Investigation and Comprehensive Monitoring based on Permafrost-Atmospheric Environment
Authors: Lee, Bang Yong2023-11-28T00:00:00ZUnderstanding of Antarctic climate and environment and assessments of global influence
https://repository.kopri.re.kr/handle/201206/14587
Title: Understanding of Antarctic climate and environment and assessments of global influence
Authors: Kim, Seong-Joong2023-08-16T00:00:00ZA study of propagation of ULF waves using Antarctic magnetometer network and satellite measurements
https://repository.kopri.re.kr/handle/201206/14552
Title: A study of propagation of ULF waves using Antarctic magnetometer network and satellite measurements
Authors: Kwon, Hyuck-Jin2023-07-28T00:00:00Z