CAJ | 학술논문

利用 MM5中尺度气象模式和 CALPUFF 空气质量模式，采用不同的边界层（PBL）参数化方案，模拟乌鲁木齐市的大气流场和湍流运动，比较不同 PBL 参数化方案下大气污染物的模拟浓度值，以发现 PBL 参数化对城市尺度空气质量模拟效果的影响。结果表明，在高分辨率的 Blacka-dar PBL 方案、Eta PBL、MRF PBL 和 Gayno - Seaman PBL 参数化方案中，没有哪个方案对所有气象要素的数值模拟拥有绝对优势，整体看来，对空气质量模拟影响较大的气象要素，如风场等模拟效果较好，与实测结果比较吻合；各方案对风速、风向及温度层结等的模拟值结果略有不同。4种方案模拟的污染物浓度值变化趋势大致相似，其中，MRF PBL 方案和 Eta PBL 方案对 PM10和 SO2的模拟效果较好，模拟值与实测值较为接近。不同 PBL 方案导致的风速及逆温层厚度差异是造成污染物浓度模拟值差异的主要原因。
이용 MM5중척도기상모식화 CALPUFF 공기질량모식，채용불동적변계층（PBL）삼수화방안，모의오로목제시적대기류장화단류운동，비교불동 PBL 삼수화방안하대기오염물적모의농도치，이발현 PBL 삼수화대성시척도공기질량모의효과적영향。결과표명，재고분변솔적 Blacka-dar PBL 방안、Eta PBL、MRF PBL 화 Gayno - Seaman PBL 삼수화방안중，몰유나개방안대소유기상요소적수치모의옹유절대우세，정체간래，대공기질량모의영향교대적기상요소，여풍장등모의효과교호，여실측결과비교문합；각방안대풍속、풍향급온도층결등적모의치결과략유불동。4충방안모의적오염물농도치변화추세대치상사，기중，MRF PBL 방안화 Eta PBL 방안대 PM10화 SO2적모의효과교호，모의치여실측치교위접근。불동 PBL 방안도치적풍속급역온층후도차이시조성오염물농도모의치차이적주요원인。
With employing four planetary boundary layer(PBL)parameterization schemes(Blacka-dar,ETA,MRF,and Gayno - Seaman),MM5 was applied to simulate the meteorological field and the turbulence in Urumchi. And then,urban air quality simulations were conducted to examine the impacts of different schemes by using CALPUFF model. Results show that among four PBL parame-terization schemes,no one is distinguishable from the rest in terms of the simulation results of all the meteorological elements. Generally speaking,for those meteorological elements that have great im-pacts on the air quality simulation results,e. g. the wind field,good results are obtained as against observation. Only little difference in the simulation values in terms of wind speed,wind direction as well as temperature are witnessed for all the PBL concerned. Variations of simulated concentration of pollutants are of similar for those four simulations,among which,MRF PBL and Eta PBL schemes are better than the rest with regard to PM10 and SO2 simulation since simulation results thereof are closer to the observation. Differences in wind speed and the thickness of the inversion layer due to different PBL schemes employed are the major contribution to the differences in simulated concentra-tion values.