Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Arid Meteorology》 2017-04
Add to Favorite Get Latest Update

Analysis of Fog and Haze Weather Characteristics and Its Impact Factors in Ji'nan of Shandong Province

YU Lijuan;YIN Chengmei;HE Jianjun;ZHANG Yongjing;LI Rui;Ji'nan Meteorological Bureau of Shandong Province;Chinese Academy of Meteorological Sciences,State Key Laboratory of Severe Weather &Key Open Laboratory of Atmospheric Chemistry of CMA;  
The characteristics of climatological variation for fog and haze weather in Ji'nan of Shandong Province during 2000-2013 were analyzed by using daily meteorological observation data firstly. Nine categories of weather types were identified using T-mode principal component analysis and K-means cluster method based on NCEP FNL sea level pressure data. The occurrence frequency of fog and haze weather under different weather types was investigated. The results are as follows:(1) The fog days decreased with a rate of 0. 4 d per year during 2000-2013,which was closely related to the inter-annual variation of relative humidity. The hazy days had a normal fluctuation before 2011,but significantly increased during 2011-2013. Correlation analysis revealed that the inter-annual variation of haze day was obviously correlated with the inter-annual variation of the frequency of inversion between 850 and 700 h Pa.(2) The high occurrence frequency of fog day was found under weak low pressure type(WT6) and north road cold air type(WT9)weather patterns in winter. The frequency of haze day was high under uniform pressure field type(WT1),weak cold air type(WT5)and north road cold air type(WT9) in winter and under weak high pressure center type(WT3) in autumn.
【Fund】: 国家自然科学基金(41475038);; 山东省气象局重点科研课题(2013sdqxz01);山东省气象局预报员专项项目(SDYBY2014-15);; 中国科学院寒旱区陆面过程与气候变化重点实验室开放基金(LPCC201405)共同资助
【CateGory Index】: P426.4;X513
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved