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| 北京市持续重污染天气分析 | |
| 引用本文： | 李国翠,范引琪,岳艳霞,张玉凤.北京市持续重污染天气分析[J].气象科技,2009,37(6):656-659. |
| 作者姓名： | 李国翠 范引琪 岳艳霞 张玉凤 |
| 作者单位： | 1. 石家庄市气象局,石家庄,050081;河北省气象与生态环境重点实验室 2. 河北省气象科技服务中心,石家庄,050021 3. 石家庄市气象局,石家庄,050081 |
| 摘 要： | 通过对2004-2008年北京市空气持续重污染过程的统计及其对非沙尘型持续重污染天气形势的特征分析,得到以下结论：持续重污染过程具有明显的季节分布特征,主要包括春季沙尘型污染和秋冬季节非沙尘型污染;非沙尘型持续重污染过程期间多对应着大雾、轻雾、霾、烟等低能见度天气,过程后期对应的天气现象多为大风或降水天气。其中大雾天气更易引发长时间持续的空气重污染事件。非沙尘型持续重污染的天气形势特点为：高空多为纬向环流,850 hPa多为暖脊控制,地面多处于弱气压场,鞍形场型污染尤为严重。北京持续重污染多对应区域性污染。 |
| 关 键 词： | 持续重污染 天气形势 大雾 非沙尘型 |
| 收稿时间： | 6/9/2009 12:00:00 AM |
| 修稿时间： | 2009/10/21 0:00:00 |
Weather Pattern Analysis during Continuing Heavy Pollution Episodes in Beijing |
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| Li Guocui,Fan Yinqi,Yue Yanxia and Zhang Yufeng.Weather Pattern Analysis during Continuing Heavy Pollution Episodes in Beijing[J].Meteorological Science and Technology,2009,37(6):656-659. | |
| Authors: | Li Guocui Fan Yinqi Yue Yanxia and Zhang Yufeng |
| Institution: | Li Guocui ,Fan Yinqi ,Yue Yanxia ,Zhang Yufeng (1 Shijiazhuang Meteorological Bureau, Shijiazhuang 050081 ; 2 Hebei Key Laboratory for Meteorology Eco-Environment, 3 Hebei Province Meteorological Observatory, Shijiazhuang 050021) |
| Abstract: | The continuing heavy pollution cases from 2004 to 2008 in Beijing are calculated, and the weather patterns without duststorm weather during the continuing heavy pollution episodes are analyzed. It is concluded that continuing heavy pollution processes exhibit distinct seasonality, including mainly sand/dust pollution in spring and non sand/dust pollution in fall to winter season; during continuing heavy pollution episodes, the non sand/dust continuing pollution processes correspond with low visibility weather, such as heavy fog, light fog, haze and smoke, etc.; in the later periods, pollution processes correspond with gale or precipitation weather, especially the long time heavy pollution events frequently occurring during heavy fog weather. The circulation characteristics during continuing pollution episodes without sand/dust weather are: there is zonal circulation in the upper air, a warm ridge at 850 hPa, a weak pressure field on the ground; serious pollution is often found under the saddle field pattern; continuing heavy pollution days are frequently related with regional pollution. |
| Keywords: | continuing heavy pollution weather situation bad fog non-sand dust |
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