1999—2011年茂名市灰霾天气的气候特征分析  

Analysis of Climatological Characteristics of Hazy Weather in Maoming from 1999 to 2011

作　　者：萧飞 李英[2] 

机构地区：[1]茂名市气象局,广东茂名525000 [2]化州市气象局,广东化州525100

出　　处：《广东气象》2014年第1期47-50,54,共5页Guangdong Meteorology

摘　　要：利用茂名市区观测站1999-2011年的观测资料,对茂名市区灰霾天气特征进行了分析.结果表明：1999-2011年茂名灰霾天气的分布为1月最多、10月次之、7月最少;秋冬季霾日数占全年的79.4％,春夏季仅占20.6％.1999-2011年以来霾日总体呈上升趋势,霾日的年际变化非常明显,其中2003-2005年和2006-2008年为霾日急剧上升阶段,2009-2011年霾日出现下降趋势,但仍保持在较高的水平.霾日数的变化与气温、降水量成反比,与湿度呈正比.茂名市区灰霾天气发生时相对湿度主要为30％ ～70％;风速在1～3 m/s,风向在SE-S范围内概率较大.Using the observations of observation stations in urban Maoming from 1999 to 2011, this work studies the characteristics of hazy weather in the region. The statistics are analyzed and shown as follows. Over this period, the hazy weather occurs most frequently in January, followed by October, with July being the month with the least. There is the most number of hazy days in autumn and winter, taking up 79.4% of the yearly total while there is the least number in spring and summer, only 20.6%. For the trend in these years, the number of hazy days is generally increasing and the interannual variation is significant, with 2003 - 2005 and 2006 - 2008 being two periods of rapid rising and 2009 - 2011 a time of decreasing but still staying at relatively high levels. The changes in the number of hazy days are inversely proportional with temperature and rainfall amount but directly proportional with humidity. For the urban part of Maoming, the hazy weather is mostly likely to occur when the relative humidity is 30% to 70%, wind speed is 1 to 3 m/s and wind direction is from SE to S.

关 键 词：环境与天气 灰霾 气候特征 茂名市 

分 类 号：P466[天文地球—大气科学及气象学]