摘要
应用天气研究与预报(weather research and forecasting,WRF)模式以及三维拉格朗日轨迹模式,以北京2003年10月18—22日出现一次重污染过程为例,研究反气旋系统控制下污染物的输送规律和移动路径,并分析环境和气象观测数据,阐述其成因.结果表明,当反气旋均压控制北京地区时,由于地方性环流起主导作用,污染物在反气旋控制区内徘徊,形成地方性风输送积累;当反气旋后部偏南风经过北京地区时,本地区累积的污染物向东北输送,最终在低压区汇聚垂直抬升,进入自由大气.
Based on a Lagrangian particle dispersion model FLEXPART 3-D in conjunction with a weather research and forecasting （WRF） model, this study investigates the mechanism and trajectory of pollutants under the anti-cyclonic weather system that took place during October 18-22, 2003 in Beijing. The reasons for this heavy air pollution episode were also analyzed by using the environmental and meteorological observational data. The findings indicate that pollutants hovered in Beijing by local wind under the control of anticyclone, the accumulated pollutants was transported to the northeast during the back of anticyclone, and the pollutants finally converged to the low-pressure area and elevated to free atmosphere.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2012年第8期1264-1268,共5页
Journal of Beijing University of Technology
基金
国家自然科学基金资助项目(51038001)
环境保护部公益性专项课题(200909008)
关键词
污染物输送轨迹
天气研究与预报
反气旋
air pollutants transport
weather research and forecasting （WRF）
anticyclone
作者简介
尉鹏（1981-），男，博士研究生，主要从事大气环境重污染方面的研究，E—mail：weipeng-1981@hotmail．com．
