• 환경영향평가
• /
• 제32권4호
• /
• pp.203-213
• /
• 2023

우리나라 환경영향평가서의 대기모델 적용 실태를 조사하기 위하여 2021년부터 2022년까지 협의가 완료되어 환경영향평가정보지원시스템(EIASS)에 공개된 환경영향평가서를 분석한 결과 AERMOD가 89.0%로 가장 많이 사용되었다. AERMET과 AERMOD의 버전 불일치는 25.3%로 나타났으며, 산업단지 및 도시개발사업의 발생하는 오염물질 배출량 산정시 적용한 가동시간과 모델에 적용한 가동시간의 불일치는 50.6%로 나타났다. 군산지역의 단순 및 복잡지형에서 다양한 버전의 AERMET과 AERMOD 모델을 면오염원과 점오염원에 적용한 결과, AERMOD 버전 12(15181) 이후부터는 동일한 값을 나타내었다. 배출량은 24시간 가동을 기준으로 산정하고, 모델에는 주간 8시간 가동을 적용하는 가변 배출계수 옵션을 사용할 때, 예측농도는 단순 및 복잡지형에서 면오염원은 32.06~74.27%, 점오염원은 14.85~43.13% 축소되는 것으로 나타났다. 따라서 AERMOD 모델의 가변 배출계수 적용 오류를 방지하기 위해서는 환경영향평가서에 배출량 산정과정을 명확히 제시하고, 모델링 입력자료 구성에 대한 구체적인 설명이 요구되며, 환경영향평가 전문 검토기관에서는 보다 철저한 검토가 필요하다.

• 한국대기환경학회지
• /
• 제27권1호
• /
• pp.87-96
• /
• 2011

In this study, the AERMOD dispersion model was used for predicting odor concentrations and back-calculating industrial area source odor emission rate. The studied area was Sihwa industrial complex in Korea. Odor samples were collected during two days over a year period in 2009. The comparison between the predicted and observed concentrations indicates that the AERMOD model could fairly well predict average downwind odor concentrations. The results show odor emission rates of Sihwa industrial complex area source were ranged from 0.204 to 2.320 $OUms^{-1}$ (average 0.476 $OUms^{-1}$). The results also show wind speed and direction are important parameters to the odor dispersion.

• Asian Journal of Atmospheric Environment
• /
• 제5권1호
• /
• pp.1-7
• /
• 2011

This study assesses the dispersion and emission rates of odor form industrial area source. CALPUFF and AERMOD Gaussian models were used for predicting downwind odor concentration and calculating odor emission rates. The studied region was Seobu industrial complex in Korea. Odor samples were collected five days over a year period in 2006. In-site meteorological data (wind direction and wind speed) were used to predict concentration. The BOOT statistical examination software was used to analyze the data. Comparison between the predicted and field sampled downwind concentration using BOOT analysis indicates that the CALPUFF model prediction is a little better than AERMOD prediction for average downwind odor concentrations. Predicted concentrations of AERMOD model have a little larger scatter than that of CALPUFF model. The results also show odor emission rates of Seobu industrial complex area were an order of 10 smaller than that of beef cattle feed lots.

• Environmental Engineering Research
• /
• 제24권4호
• /
• pp.572-581
• /
• 2019

The emission of hydrogen sulfide (H₂S) from the Kahrizak landfill was studied. Firstly, the field measurements were conducted in the summer and winter seasons; and the samples were analyzed using Jacob method. We predicted the H₂S concentrations in the downwind using AERMOD and ISCST3. According to the AERMOD, the maximum concentration of H₂S in the summer and winter were 117 ㎍/㎥ and 205 ㎍/㎥ respectively. The downwind concentrations reached zero at the distance of 35 km from the leachate treatment plant. The Geometric mean bias, Geometric variance, Fractional bias, Fraction of predictions within a factor of two of the observations and Normalized mean square error for the AERMOD were 0.58, 1.35, -0.12, 1.91 and 0.042, respectively in the summer and 1.39, 1.35, -0.05, 1.46 and 0.027 in the winter; and for the ISCST3, were 0.85, 1.03, 0.02, 1.45 and 0.04 in the summer and 1.18, 1.03, 0.15, 1.16 and 0.04 in the winter. The results of the AERMOD were compared with the ISCST3 and indicated that the AERMOD performance was more suitable than the ISCST3.

• 한국환경보건학회지
• /
• 제35권4호
• /
• pp.304-314
• /
• 2009

A new harbor as been constructing in Gadukdo. However, a lot of fugitive dust gas been often generated from construction site reclaiming sea sand, especially when the Northwester is blown strongly. It has resulted insome appeals of residents in Gadukdo. In this study, we estimated the amount of fugitive dust caused by new harbor construction using Fugitive dust formula. Also, the concentration of PM10 for recipient is predicted by AERMOD. The amount of fugitive dust is 26.56 ${\mu}g/sec{\cdot}m^2$ and 11.84 ${\mu}g/sec{\cdot}m^2$ respectively by the Fugitive dust formula. PM10 outlet concentration and the amount of fugitive dust increase according to wind velocity and directions. AERMOD is performed on the basis of weather data and the amount of fugitive dust generated with wind velocity. As a result of AERMOD, the PM10 concentration of Sunchang and Oinul are predicted over 100 ${\mu}g/m^3$. The PM10 concentration of Sunchang and Oinul are predicted over 130 ${\mu}g/m^3$ when wind velocity of northwester in winter is over 11 m/s (Air Quality for Particulate Matter (100 ${\mu}g/m^3$ for 24 hours)). Also, the measured error between AERMOD and actual measurement is lower than 5%.

• 한국환경보건학회지
• /
• 제47권3호
• /
• pp.267-278
• /
• 2021

Objectives: Using atmospheric dispersion representative models (AERMOD and CALPUFF), the emissions characteristics of each model were compared and analyzed in ready-mixed concrete manufacturing facilities that generate a large amount of particulate matter (PM-10, PM-2.5). Methods: The target facilities were the ready-mixed concrete manufacturing facilities (Siheung RMC, Goyang RMC, Ganggin RMC) and modeling for each facility was performed by dividing it into construction and operation times. The predicted points for each target facility were selected as 8-12ea (Siheung RMC 10, Goyang RMC 8, and Gangjin RMC 12ea) based on an area within a two-kilometer radius of each project district. The terrain input data was SRTM-3 (January-December 2019). The meteorological input data was divided into surface weather and upper layer weather data, and weather data near the same facility as the target facility was used. The predicted results were presented as a 24-hour average concentration and an annual average concentration. Results: First, overall, CALPUFF showed a tendency to predict higher concentrations than AERMOD. Second, there was almost no difference in the concentration between the two models in non-complex terrain such as in mountainous areas, but in complex terrain, CALPUFF predicted higher concentrations than AERMOD. This is believed to be because CALPUFF better reflected topographic characteristics. Third, both CALPUFF and AERMOD predicted lower concentrations during operation (85.2-99.7%) than during construction, and annual average concentrations (76.4-99.9%) lower than those at 24 hours. Fourth, in the ready-mixed concrete manufacturing facility, PM-10 concentration (about 40 ㎍/m³) was predicted to be higher than PM-2.5 (about 24 ㎍/m³). Conclusions: In complex terrain such as mountainous areas, CALPUFF predicted higher concentrations than AERMOD, which is thought to be because CALPUFF better reflected topographic characteristics. In the future, it is recommended that CALPUFF be used in complex terrain and AERMOD be used in other areas to save modeling time. In a ready-mixed concrete facility, PM-10, which has a relatively large particle size, is generated more than PM-2.5 due to the raw materials used and manufacturing characteristics.

• 한국화재소방학회논문지
• /
• 제29권1호
• /
• pp.7-11
• /
• 2015

유해화학물질 누출사고 시 피해 예상지역의 주민안전 확보를 위해 국내에서는 캐나다의 ERG를 기반으로 한 방호활동거리를 활용하고 있다. 그러나 국가별 지형적인 특성이나 기상조건 등이 상이하여 신뢰성 있는 대응에는 한계를 보여 왔다. 본 연구에서는 국내 특정 석유화학공단을 대상으로 지형자료, 기상조건 등을 반영한 AERMOD 모델링 분석을 통해 방호활동거리가 계절별, 지형별로 다소 차이가 있음을 알 수 있었다.

• 한국대기환경학회:학술대회논문집
• /
• 한국대기환경학회 2007년도 추계학술대회 논문집
• /
• pp.455-456
• /
• 2007

• 환경영향평가
• /
• 제31권5호
• /
• pp.271-285
• /
• 2022

본 연구에서는 AERMOD 기상 전처리 프로그램인 AERMET에 대표적 지표기상 형식인 CD-144와 ISHD를 적용하여 처리 결과를 비교하고, 환경부 토지피복도를 고려하여 대기확산 정도를 분석하였다. 연구결과, knot 단위를 사용하는 CD-144 형식의 경우 단위 변환 오차로 인해 실제 풍속을 고려하지 못하였으나 ISHD 형식은 그대로 반영하는 것으로 나타났다. 점오염원 1시간 최대 농도값은 ISHD가 CD-144에 비해 높았으며, 그 외에는 동일하거나 낮아지는 것으로 나타났다. 환경부 토지피복도를 반영한 농도값은 토지피복도를 고려하지 않은 경우보다 최대 387% 증가하였으며, 등농도곡선 형태(곡선의 방향 및 길이)에도 차이가 있는 것으로 나타났다. 환경영향평가 및 통합환경허가에서의 모델 사용은 동일한 조건에서의 통일된 판단을 요구하므로 AERMET 사용시 ISHD 형식의 사용과 함께 모델링 지역의 토지피복을 고려할 필요가 있다.

• 한국대기환경학회:학술대회논문집
• /
• 한국대기환경학회 2008년도 추계학술대회 논문집
• /
• pp.408-410
• /
• 2008