乌鲁木齐市冬季严重污染日的环流分型特征  

Weather situation classification and its feature in severe air pollution days in winter in Urumqi

作　　者：王健[1] 李景林[2] 张月华[1] 

机构地区：[1]乌鲁木齐市气象局,新疆乌鲁木齐830002 [2]新疆维吾尔自治区气象局,新疆乌鲁木齐830002

出　　处：《气象与环境学报》2013年第1期28-32,共5页Journal of Meteorology and Environment

基　　金：新疆气象局科研课题"乌鲁木齐冬季空气污染与环流形势的统计分析研究"(200913);科技部项目"西部干旱区煤烟型城市大气污染成因研究"共同资助

摘　　要：根据2000—2008年冬季逐日08时高空500 hPa、地面天气图和官方网站发布的乌鲁木齐市逐日大气污染指数API值,分析了全市大气污染概况及季节分布、月际变化特征,研究了环流形势对全市空气质量的影响。结果表明:影响乌鲁木齐市的环流形势可分为高空7型和地面5型,分析各型环流形势与冬季严重污染日相关性表明,最易引发冬季严重污染的环流形势是高空脊中型、地面低压型,其次为脊前型或空档型、地面高压后型。Based on the daily ground synoptic chart and the upper synoptic chart at 500 hPa at 08：00 in winter from 2000 to 2008 as well as the daily air pollution index （API） in Urumqi from the lntemet, the seasonal and monthly atmospheric pollution characters were analyzed. The effect of circulation situation on air quality was dis- cussed. The results indicate that circulation situation influencing Urumqi could be divided into 7 types in upper lev- el and 5 types on the ground. The analysis of correlation between the different circulation situations and the serious pollution days in winter shows that circulation situations that causes easily the heavy pollution are high pressure ridge type and low vortex type, followed by a high pressure ridge front type and ground cold high pressure type.

关 键 词：环流分型 大气污染指数(API) 严重污染 乌鲁木齐 

分 类 号：X511[环境科学与工程—环境工程] P434[天文地球—大气科学及气象学]