本文關鍵詞： 重污染 氣象要素 地面形勢場　出處：《環(huán)境科學與技術》2016年S2期 　論文類型：期刊論文

【摘要】：利用常規(guī)氣象觀測資料和邯鄲環(huán)境監(jiān)測資料,針對邯鄲2015年12月26日下午PM_(10)和PM_(2.5)污染指數(shù)驟升的重污染天氣過程,從逐時污染指數(shù)變化、氣象要素的演變、氣象擴散條件和逐時地面要素場特征等方面進行了分析。結(jié)果表明:PM_(10)和PM_(2.5)污染指數(shù)的陡升與氣溫驟降、相對濕度驟升相對應;逆溫層的存在不利于空氣污染物的擴散;地面風場的輻合早于污染指數(shù)的快速增加,地面風速逐漸增大和北方濕冷空氣的南下,與污染指數(shù)陡升相對應,導致本次重污染天氣過程的產(chǎn)生。
[Abstract]:Based on the conventional meteorological observation data and the Handan environmental monitoring data, according to the heavy pollution weather process in the afternoon of December 26th 2015 in Handan, where the pollution index suddenly rises, the change of the pollution index is from time to time, and the evolution of meteorological elements. The results show that the sharp rise of the pollution index corresponds to the sudden drop of air temperature and the sudden rise of relative humidity, and the existence of inversion layer is not conducive to the diffusion of air pollutants. The convergence of the surface wind field is earlier than the rapid increase of the pollution index, and the surface wind speed gradually increases and the wet cold air in the north goes south, corresponding to the sharp rise of the pollution index, which leads to the production of the heavy polluted weather process.
【作者單位】： 邯鄲市氣象局;涉縣氣象局;
【基金】：河北省科技計劃項目(13275416)
【分類號】：X51

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本文編號：1554596