Study on PM2.5 Emission Sources in the Vicinity of Busan Gamman Port using Scanning LIDAR Observation

IF 1 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES
Jaewon Kim, Youngmin Noh
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Abstract

Using a scanning LIDAR, we measured the PM 2.5 concentration with a horizontal resolution of 30 m in the port area, industrial zones, and residential areas including Gamman Port, Bukhang Port, and Yeongdo-gu in Busan, from March 2 to May 2, 2022. Among the observation areas, we categorized them into six zones: Gamman Port (A) with ships and cargo handling equipment, residential area (B) adjacent to the port, factory area (C) where steel mills are located, redevelopment area of Bukhang Port (D), industrial area (E) with shipbuilding yards, and industrial complex (F) with ship berthing facilities. We examined the characteristics of fine particle concentration based on the concentration changes of PM 2.5 in each zone. The average concentration for the entire observation period, including all zones, was 17.0 ± 10.0 μg/m 3 . For each zone, A to F, the concentrations were 19.0 ± 12.8, 21.0 ± 14.5, 18.6 ± 12.5, 15.0 ± 7.8, 14.2 ± 7.3, and 15.9 ± 8.8 μg/m 3 , respectively. Zones A, B, and C showed higher concentrations compared to zones D, E, and F. When the wind speed was strong, the concentration difference between zones A, B, and C and zones D, E, and F was small. However, as the wind speed decreased, the concentration difference between zones became more significant. The average PM 2.5 concentration, including all zones, varied with wind direction: 14.1 ± 11.6, 17.5 ± 9.3, 19.1 ± 8.7, and 17.7 ± 6.5 μg/m 3 for east, west, south, and north winds, respectively, showing the highest concentration during south winds and the lowest during east winds. Through scanning LIDAR observations, we were able to confirm the concentration changes in each zone according to the concentration difference and variations in wind direction and speed. The results of this study indicate that scanning LIDAR can provide important information for accurately understanding the fine particle status and formulating policies for mitigation and countermeasures.
激光雷达扫描观测釜山-金门港附近PM2.5排放源研究
2022年3月2日至5月2日,我们使用扫描激光雷达测量了港口区、工业区和居民区的PM2.5浓度,水平分辨率为30米,包括釜山的金门港、武航港和永都区。在观察区中,我们将其分为六个区域:有船舶和货物装卸设备的金门港(A)、港口附近的住宅区(B)、钢铁厂所在的工厂区(C)、武航港重建区(D)、有造船厂的工业区(E)和有船舶停泊设施的工业综合体(F)。我们根据各区域PM2.5的浓度变化,研究了细颗粒物浓度的特征。整个观察期(包括所有区域)的平均浓度为17.0±10.0μg/m3。对于每个区域,A至F,浓度分别为19.0±12.8、21.0±14.5、18.6±12.5、15.0±7.8、14.2±7.3和15.9±8.8μg/m3。与D、E和F区相比,A、B和C区显示出更高的浓度。当风速高时,A、B和C区与D、E和F区之间的浓度差异很小。然而,随着风速的降低,区域之间的浓度差异变得更加显著。包括所有区域在内的PM2.5平均浓度随风向变化:东风、西风、南风和北风分别为14.1±11.6、17.5±9.3、19.1±8.7和17.7±6.5μg/m3,南风期间浓度最高,东风期间浓度最低。通过扫描激光雷达观测,我们能够根据浓度差异以及风向和风速的变化来确认每个区域的浓度变化。这项研究的结果表明,扫描激光雷达可以为准确了解细颗粒物状态以及制定缓解和应对政策提供重要信息。
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来源期刊
Journal of Korean Society for Atmospheric Environment
Journal of Korean Society for Atmospheric Environment METEOROLOGY & ATMOSPHERIC SCIENCES-
CiteScore
2.00
自引率
60.00%
发文量
50
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