%0 Journal Article
%T 宁波持续型霾的天气分型研究<br>The Classification Study of the Persistent Haze in Ningbo
%A 薛国强
%A 孙仕强
%A 王文典
%A 王珊珊
%J Advances in Geosciences
%P 1-10
%@ 2163-3975
%D 2020
%I Hans Publishing
%R 10.12677/AG.2020.101001
%X <div style=\"text-align:justify;\">
	<span style=\"line-height:1.5;\">利用常规气象站地面观测资料，探空资料和空气质量数据，分析了宁波市2010~2018年霾情况，结果表明，《大气污染防治条例》颁布以来，宁波市霾日数明显减少，持续型霾过程一般持续4天左右。造成持续型霾的地面气压场可分为高压场，均压场，冷空气缓慢扩散场三种主要类型，分别占总数的72%，11%，17%。霾过程的高空形势主要有平直西风型和副高控制型。低空风切变和地面风速与能见度在高压场控制期成正相关，而在弱冷空气扩散场控制时相关性不明显。K值或T925-850越大，则越利于污染物垂直扩散稀释，提高能见度，反之会导致霾加重。<br />
Based on the ground weather observation data, sounding data, and air quality data, the haze situation of Ningbo City in 2010-2018 was analyzed. The results show that: since the “Air Pollution Control Regulations” were promulgated, the number of haze days in Ningbo has been significantly reduced, and the persistent haze process usually lasts about 4 days. The surface pressure field which causes continuous haze can be divided into three main types: high pressure field, equal pressure field, and cold air slow diffusion field, which account for 72%, 11%, and 17% of the total, respectively. And the high-altitude situation in the haze process can be mainly straight westerly and sub-tropic high control. Low-altitude wind shear and ground wind speed have a positive correlation with visibility during the control period of the high-pressure field, but the correlation is not obvious when controlled by the weak-cold air diffusion field. The larger the K value or T925-850 is, the more conducive it is to the vertical diffusion and dilution of pollutants, so the visibility can be improved, and conversely, haze will be aggravated.</span><span style=\"line-height:1.5;\"></span> 
</div>
%K 宁波，持续型霾，天气分型，气象因子<br>Ningbo
%K Persistent Haze
%K Weather Classification
%K Meteorological Factor
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=33892