石家庄市冬季重污染过程特征及成因研究

发布时间：2018-04-28 09:53

本文选题：重污染 + 气象影响　；参考：《科学技术与工程》2016年34期

【摘要】：利用石家庄市大气环境监测数据和气象观测资料,对比分析了2015年12月6日至13日和12月21日至26日石家庄市两次持续性重污染天气过程的演变特征及主要影响因素。结果表明:两次重污染过程持续时间长、污染程度重,PM2.5对污染过程的影响大,但污染物变化趋势和浓度水平存在差异。高低空稳定的天气形势配置是两次重污染过程形成的直接原因。在这些天气形势影响下,气温低(1.5℃)、湿度高(平均相对湿度75%)、风速小(1.5 m/s)、气压低(1016 h Pa),大气层结稳定,逆温层厚、混合层高度低(750 m),是造成两次重污染过程的重要原因。燃煤、机动车尾气是石家庄冬季重污染的主要污染源,东北部、北部和西南部周边污染物的输送对重污染天气的形成发展也有一定的影响。
[Abstract]:Using Shijiazhuang atmospheric environmental monitoring data and meteorological observation data, the evolution characteristics and main influencing factors of the twice persistent heavy pollution weather process in Shijiazhuang city in from December 6 to 13, 2015 and from December 21st to 26th are compared and analyzed. The results show that the two times of heavy pollution process is long, the degree of pollution is heavy, and the pollution process is PM2.5 to the process of pollution. The influence is large, but the variation trend and concentration level are different. The high and low altitude weather situation configuration is the direct cause of the formation of the two heavy pollution process. Under the influence of these weather conditions, the temperature is low (1.5), the humidity is high (average relative humidity 75%), the wind speed is small (1.5 m/s), the pressure is low (1016 h Pa), the atmosphere is stable and the inversion layer is thick. The low height of the mixed layer (750 m) is an important cause of the two heavy pollution process. The coal exhaust is the main pollution source of heavy pollution in Shijiazhuang in winter. The transportation of the pollutants in the northeast, the north and the southwest also has a certain effect on the formation and development of heavy polluted weather.

【作者单位】：石家庄市环境监测中心;石家庄市气象局;
【分类号】：X51

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