| 摘要 |
Based on the monitoring data of PM10 concentration from six environmental monitoring stations and the ground meteorological observation data in Yantai City from 2019 to 2021, the spatial and temporal variation of PM10 concentration and its relationship with meteorological factors were studied. The results show that from the perspective of temporal variation, the annual average of PM10 concentration in Yantai City tended to decrease year by year. It was high in winter and spring and low in summer and autumn. In terms of monthly variation, the changing curve is U-shaped, and it was high in December and January but low in July and August. During a day, PM10 concentration had two peaks. The first peak appeared approximately from 09:00 to 11:00, and the second peak can be found from 21:00 to 23:00. From the perspective of spatial distribution, PM10 concentration was the highest in the development area and Fushan District. It was the highest in the west, followed by the east, while it was the lowest in the middle. The spatial difference rate was the highest in summer. Average temperature, relative humidity, wind speed and precipitation were the main meteorological factors influencing PM10 concentration in Yantai area. PM10 concentration was negatively correlated with average temperature and relative humidity, and the correlation was the most significant from June to October. It was negatively correlated with wind speed and precipitation, and the correlation was different in various months. The negative correlation was significant in summer and winter. |
