라디오존데 관측을 활용한 양평지역 5월 대기 특성 분석
Analysis of Atmospheric Pattern in May at Yangpyeong, Korea Based on the Radiosonde Measurement
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초록
We analyzed 3 radiosonde measurements in May at Yangpyeong (10 May 2019, 19 May 2023, and 10 May 2024), as conducted for the educational purpose. While the number of measurements is limited, we find interesting features using these measured data. First, the Modern- Era Retrospective Analysis for Research and Applications version 2 (MERRA-2) reanalysis data at the same time at Yangpyeong show the similar vertical temperature profile to that of radiosonde measurements. Vertical profiles of wind speed and relative humidity from the MERRA-2 data also look similar to those of radiosonde measurements, but the consistency was not much guaranteed in the upper atmosphere (higher than 5 km altitude). Second, the temperature profile from the radiosonde measurement and MERRA-2 dataset at Yangpyeong (located in the east of Seoul) is very analogous to that from the radiosonde measurement at Osan (located in the south of Seoul). Considering that the straight distance between Yangpyeong and Osan is about 60 km, the consistency of temperature profile is remarkable. Vertical wind profile is also generally similar between two regions, but the gap becomes larger as the altitude goes up. While the vertical profile of relative humidity is somewhat different between two regions, the vertical profile of water vapor mixing ratio derived from the relative humidity is rather similar between two regions. This study shows that only small number of additional radiosonde measurements enable us much better evaluation of regional meteorology in a vertical scale.
Abstract
We analyzed 3 radiosonde measurements in May at Yangpyeong (10 May 2019, 19 May 2023, and 10 May 2024), as conducted for the educational purpose. While the number of measurements is limited, we find interesting features using these measured data. First, the Modern- Era Retrospective Analysis for Research and Applications version 2 (MERRA-2) reanalysis data at the same time at Yangpyeong show the similar vertical temperature profile to that of radiosonde measurements. Vertical profiles of wind speed and relative humidity from the MERRA-2 data also look similar to those of radiosonde measurements, but the consistency was not much guaranteed in the upper atmosphere (higher than 5 km altitude). Second, the temperature profile from the radiosonde measurement and MERRA-2 dataset at Yangpyeong (located in the east of Seoul) is very analogous to that from the radiosonde measurement at Osan (located in the south of Seoul). Considering that the straight distance between Yangpyeong and Osan is about 60 km, the consistency of temperature profile is remarkable. Vertical wind profile is also generally similar between two regions, but the gap becomes larger as the altitude goes up. While the vertical profile of relative humidity is somewhat different between two regions, the vertical profile of water vapor mixing ratio derived from the relative humidity is rather similar between two regions. This study shows that only small number of additional radiosonde measurements enable us much better evaluation of regional meteorology in a vertical scale.
참고문헌 (22)
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