에르덴 황사감시기상탑 자료를 이용한 황사 발원 추세 및 기상인자의 상관성 분석 (Analysis of Asian Dust Outbreaks and Correlation with Meteorological Factors Using Erdene Dust Monitoring Tower)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 39권 / 2호 / 190 ~ 201페이지
· 저자명 : 정민재, 유희정, 오상민, 주승진, 부경온

초록

This study analyzed the characteristics of the Asian dust source region and examined the correlation between Asian dust outbreak and meteorological factors using data collected from a 20 m dust monitoring tower located in Dornogovi Erdene, Mongolia from 2019 to 2021. During this period, the hourly average PM10 concentrations were about 3,522 μg/m3 on May 4 in 2019, 2,958 μg/m3 on October 20 in 2020, and 3,812 μg/m3 on April 15 in 2021, recording the highest concentration in the spring and fall seasons. However, according to the Asian dust monitoring tower observations, it was analyzed that the Asian dust outbreak events of which the maximum hourly average PM10 concentration exceeding 200 μg/m3 occurred every month of the year. Through the correlation analysis between observed meteorological factors and PM10 concentration, it was found that high-concentration dust events occurred when the critical friction velocity exceeds 0.6 m/s. It was found that the dust concentration at this site was directly related to the wind speed exceeding the critical friction velocity during the winter to early spring. However, it was not only related to the wind speed but also related to the Normalized Difference Vegetation Index (NDVI) during the late spring to the late autumn due to the growth of vegetation. The Erdene dust monitoring tower data can be used to validate the model parameters in the Asian Dust Aerosol Model (ADAM) and to improve the operational ADAM forecasting performance in the Korea Meteorological Administration (KMA).

영어초록

This study analyzed the characteristics of the Asian dust source region and examined the correlation between Asian dust outbreak and meteorological factors using data collected from a 20 m dust monitoring tower located in Dornogovi Erdene, Mongolia from 2019 to 2021. During this period, the hourly average PM10 concentrations were about 3,522 μg/m3 on May 4 in 2019, 2,958 μg/m3 on October 20 in 2020, and 3,812 μg/m3 on April 15 in 2021, recording the highest concentration in the spring and fall seasons. However, according to the Asian dust monitoring tower observations, it was analyzed that the Asian dust outbreak events of which the maximum hourly average PM10 concentration exceeding 200 μg/m3 occurred every month of the year. Through the correlation analysis between observed meteorological factors and PM10 concentration, it was found that high-concentration dust events occurred when the critical friction velocity exceeds 0.6 m/s. It was found that the dust concentration at this site was directly related to the wind speed exceeding the critical friction velocity during the winter to early spring. However, it was not only related to the wind speed but also related to the Normalized Difference Vegetation Index (NDVI) during the late spring to the late autumn due to the growth of vegetation. The Erdene dust monitoring tower data can be used to validate the model parameters in the Asian Dust Aerosol Model (ADAM) and to improve the operational ADAM forecasting performance in the Korea Meteorological Administration (KMA).

참고자료

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