2013年京津冀重污染特征及其气象条件分析

被引:18
作者
郝建奇 [1 ,2 ]
葛宝珠 [1 ]
王自发 [1 ]
王哲 [1 ]
黄思 [3 ]
姚雪峰 [1 ,2 ]
机构
[1] 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室
[2] 中国科学院大学
[3] 国际商业机器(中国)投资有限公司
关键词
PM2.5重污染事件; 气象要素; 天气形势;
D O I
10.13671/j.hjkxxb.2017.0087
中图分类号
X16 [环境气象学]; X51 [大气污染及其防治];
学科分类号
0706 ; 070602 ;
摘要
2013年中国东部地区多次发生持续的重霾污染事件.为探究其气象条件与重污染事件的关系,本文使用欧洲中心2013年东亚地区的逐日气象数据和北京、天津、石家庄的逐时PM2.5浓度数据以及2013年MICAPS观测数据,分析了重污染事件对应的天气形势,并使用NAQMPS针对2013年1月的重污染事件进行情景模拟.研究结果表明:(1)北京、天津和石家庄地区PM2.5浓度,夏秋季节日变化不显著,秋冬季节白天低夜间高;3地PM2.5浓度均表现为12—1月浓度最高,7月最低;.(2)500 hPa平直西风气流,850 h Pa弱暖平流,地面处于弱高压后部或高压底部高低空配置下的天气系统,对应着重污染事件的高发期;(3)源强不变的情况下,京津冀地区由弱高压前部控制转为弱高压控制时,地面温度升高0~5°C,相对湿度增加30%50%,风速下降2~3 m·s-1,PM2.5浓度变化可达300μg·m-3.
引用
收藏
页码:3032 / 3043
页数:12
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