文章摘要
罗碧瑜,陈清耀,郭青,张小石.2014—2016年梅州市空气质量特征及其与气象条件的关系[J].广东水利水电,2018,(4):64-67
2014—2016年梅州市空气质量特征及其与气象条件的关系
Characteristics of Air Quality and its Correlation with Meteorological Conditionsof Meizhou City in 2014 to 2016
投稿时间:2018-03-08  最后修改时间:2018-03-23
DOI:
中文关键词: 梅州市  空气质量  气象条件
英文关键词: Meizhou  air quality  weather condition
基金项目:
作者单位
罗碧瑜 广东省梅州市气象局,广东 梅州 514000 
陈清耀 广东省梅州市气象局,广东 梅州 514000 
郭青 广东省梅州市气象局,广东 梅州 514000 
张小石 广东省丰顺县气象局,广东 丰顺 514300 
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中文摘要:
      利用2014—2016年梅州市空气质量监测资料和气象资料,分析了梅州市空气质量特征及其与气象要素的关系。结果表明: ① 梅州市近3 a平均空气质量(AQI)优良率达95%以上,其中I级优最多,占48.9%,近3 a梅州的空气质量逐年提高,且6月空气质量最好,1月空气质量状况最差。 ② 梅州市的首要污染物是细颗粒物(PM2.5)和O3,在10月—次年3月,首要污染物是细颗粒物PM2.5;在6—8月,首要污染物主要为O3。 ③ 梅州AQI与气象要素密切相关,其与气压呈显著正相关,与气温、相对湿度、雨量呈显著负相关。反映了当气压低,温度高,湿度大,有利于污染物的扩散,导致污染物浓度降低。反之,气压高(如冷空气影响) ,温度低,湿度小,无降水,不利于污染物的扩散,污染物浓度升高。
英文摘要:
      Based on the air quality monitoring data and meteorological data of Meizhou City from 2014 to 2016, the air quality characteristics of Meizhou City and its correlation with meteorological elements are analyzed. The results show: 1)The average air quality (AQI) rate in Meizhou City in the past three years was 95 or more, with the highest grade I, standing at 48.9%. The air quality in Meizhou has been increasing year by year. Meizhou has the best air quality in June, with the worst air quality in January. 2)The primary pollutants in Meizhou are fine particulate matter (PM2.5) and O3. From October to March of the following year, the primary pollutant is PM2.5; in June-August, the primary pollutant is mainly O3. 3)Meizhou AQI is closely related to meteorological elements. It has a significant positive correlation with atmospheric pressure and a significant negative correlation with temperature, relative humidity, and rainfall.It means that when the pressure is low (the development of low troughs on the ground), the temperature is high and the humidity is high , which is conducive to the diffusion of pollutants. Precipitation plays a role of scouring and the concentration of pollutants decreases. On the contrary, high pressure (such as cold air), low temperature, low humidity, no precipitation, is not conducive to the proliferation of pollutants, pollutant concentration increased.
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