大气科学2013，Vol.37Issue(1)：14-22,9.DOI:10.3878/j.issn.1006-9895.2012.11089
复杂地形上气象场对空气质量数值模拟结果影响的研究
The Impacts of Various Meteorological Conditions on Air Quality Modeling Results over Complex Terrain
摘要
Abstract
Meteorological conditions are critical in the transport and final fate of air pollutants. In this paper, meteorological data simulated by three different planetary boundary layer (PBL) schemes in the Weather Research and Forecasting (WRF) model for the period January 27-February 2, 2005, were used to drive the Community Multi-scale Air Quality (CMAQ) model. The results show that discrepancies in the turbulent closure method employed by the various PBL schemes in the WRF cause a significant impact on the wind and the temperature fields in the PBL and lead to differences in pollutant concentrations simulated by the CMAQ model. Compared with monitored pollutant concentration, the CMAQ model has been determined as suitable for obtaining high spatial and temporal resolution pollutant characteristics in complex terrain areas. In addition, the results of WRF simulation with the Asymmetric Convective Model version 2 (ACM2) PBL scheme coupled with CMAQ yields more reasonable results than those of other two schemes. The local and non-local combined ACM2 scheme represents actual meteorological conditions more accurately due to its reasonable turbulence transport mechanism. Thus, usage of the same vertical turbulent mixing scheme in a coupled meteorological and air quality model would be advantageous. This tight coupling would improve mass conservation because air density and pollutants mix in the same manner, eliminating the risk of accruing mass error in mixing ratios of trace species in air mass.关键词
CMAQ模式/PBL参数化方案/高分辨率/复杂地形Key words
CMAQ, PBL, Parameterization, High resolution, Complex terrain分类
资源环境引用本文复制引用
王颖,隆霄,余晔,左洪超,梁依玲..复杂地形上气象场对空气质量数值模拟结果影响的研究[J].大气科学,2013,37(1):14-22,9.基金项目
国家重点基础研究发展计划(973计划)项目2011CB706900,自然科学基金资助项目41205077,中国科学院百人计划项目290827631 （973计划）
