京津冀秋冬季工业生产热异常遥感监测探讨

为全面、客观掌握工业生产热排放对大气污染的影响,利用遥感手段分析了2018—2019年秋冬季京津冀工业生产热排放及其同比变化。结果显示:2018—2019年秋冬季,京津冀地区工业热异常点数量及秋冬热异常点辐射功率(FRP秋冬)较上年同期明显增加,工业生产活动规模及强度同比有所扩大,区域PM2. 5浓度呈增长趋势。根据FRP秋冬分布特点可将京津冀工业生产分为3类,密集型、分散型和稀少型。工业生产密集型城市FRP秋冬通常 1 500 MW,较为典型的城市如唐山、邯郸,FRP秋冬可达2 000 MW以上甚至上万MW,这些城市的空气质量也相对较差;保定是工业生产分散型城市,该城市热异常点增长显著,FRP秋冬也可达2 000 MW以上,但空间分布分散;工业生产稀少型城市热异常点较少且空气质量相对较好。

Discussion of Industrial Production in Beijing Tianjin Hebei Region Based on Thermal Anomaly Remote Sensing Monitoring during Autumn and Winter Seasons

In order to monitor the regional industrial production situation comprehensively and objectively and having a better understanding of industrial emission impact, remote sensing was used to identify the thermal emission from industrial production and growth in Beijing Tianjin Hebei region (BTH region). The distribution and comparative changes of thermal anomalies were analyzed in BTH region during Autumn and Winter Period from 2018 to 2019. The result showed that the number and fire radiation power (FRP) of industrial thermal anomalies increased significantly from 2018 to 2019, compared the same period of last year. The scale and intensity of industrial production expanded and the regional PM_2.5 concentration also increased. According to the distribution characteristics of FRP, industrial production in BTH region can be divided into three types: intensive, dispersal and rare. The FRP value in industrial intensive cities is usually higher than 1 500 MW. In typical intensive cities such as Tangshan and Handan, the FRP value can exceed 2 000 MW or even ten thousands MW. The air quality of these cities is also relatively poor. Dispersed city like Baoding, its thermal anomaly points have increased significantly, and the FRP value can reach more than 2 000 MW, but the spatial distribution is scattered. Industrial sparse cities have fewer thermal anomalies and generally have relatively good air quality.