本文選題：霧霾天氣 + 穩(wěn)定層結(jié)　； 參考：《氣候與環(huán)境研究》2017年06期

【摘要】：為了深入了解發(fā)生在武漢地區(qū)一次重霧霾天氣過程的氣象條件、污染源和污染物的濕清除特征,本文利用空氣質(zhì)量監(jiān)測資料、地面觀測資料和遙感火點(diǎn)監(jiān)測資料和實(shí)測雨滴譜資料,詳細(xì)分析了這次過程。結(jié)果表明:此次持續(xù)10 d的重霧霾天氣過程發(fā)生在高壓天氣系統(tǒng)和靜風(fēng)條件下,輻射降溫形成的穩(wěn)定逆溫邊界層結(jié)構(gòu)有利于污染氣溶膠的積累和霧霾的形成和發(fā)展,尤其是來自南方持續(xù)不斷的濕平流使霧霾天氣得以長時間持續(xù)和發(fā)展,整個霧霾天氣期間能見度均小于2 km,最低能見度不足50 m。2014年11月23~24日降水過程對此類污染物有明顯的清除效果,清除率最高的是顆粒物污染,NO_2、SO_2和CO次之,最差的是O_3,通過與Scott(1982)按平均碰并系數(shù)E(E=0.65)得到的清除率和雨強(qiáng)的關(guān)系比較,武漢地區(qū)穩(wěn)定性降水對氣溶膠的平均碰并系數(shù)可取0.25~0.35。
[Abstract]:In order to understand the meteorological conditions of a heavy haze weather process, the characteristics of pollution sources and the wet removal of pollutants in Wuhan area, air quality monitoring data are used in this paper.The process is analyzed in detail by ground observation data, remote sensing fire monitoring data and observed raindrop spectrum data.The results show that the heavy haze weather process which lasts 10 days occurs in high pressure weather system and static wind. The stable boundary layer structure formed by radiation cooling is conducive to the accumulation of polluted aerosols and the formation and development of haze.In particular, the persistent wet advection from the South has allowed haze weather to persist and develop for a long time.During the whole haze weather, the visibility was less than 2 km.The minimum visibility was less than 50 m.2014 and the precipitation process from 23 to 24 November 2014 had obvious effect on the removal of these pollutants.The worst one is O _ 3s. Compared with Scott's 1982), the average collision coefficient of stable precipitation in Wuhan area is 0.25 ~ 0.35, compared with the average collision coefficient E ~ (0. 65)).
【作者單位】： 武漢市氣象局;湖北省氣象服務(wù)中心;武漢中心氣象臺;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃2016YFA0601704、2016YFC0203304 湖北省氣象局科技發(fā)展基金2016Y02、2016Q10~~
【分類號】：X513
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本文編號：1755923