利用卫星遥感大气气溶胶进行待建环境监测站点位评估

利用MTSAT-1R卫星资料中的红外1、红外2和水汽通道亮温数据, 在目标云块识别对比的基础上计算对流初生(CI)预报的8个指标值。根据京津地区的实际情况, 给出修正后的预报指标阈值, 并对2006-2007年京津地区进行17日次对流初生预报实验。实验结果表明, 该预报方法能够对1小时内的对流初生现象进行有效预报。结合云导风矢量给出检验预报结果的方法, 对该预报方法的预报效果进行量化统计。统计结果表明, 该方法预报对流初生的TS (threat score) 评分为0.545, 检测概率(POD)为0.654, 空报率(FAR)为0.435。

Assessment of the Location of One Background Monitoring Station to be Built with Particulate Matter Remote Sensing from Space

The aerosol optical parameters derived from satellite remote sensing and the related surface PM10 mass concentration data in 2011?2012 over Suzhou and Wuxi Cities were used to assess the location selection of one background monitoring station to be built. The results showed that satellite remote sensing products with 10 km, 5 km and 2 km space average were all significantly correlated to the hourly PM10 concentration. Showing in the annual average regional distribution of satellite remote sensing results, the annual average PM10 mass concentration over the Xishan (the site to be built in Suzhou) will be significantly lower than those over the urban stations in the magnitude up to 14%. Statistical analysis based on an objective weather classification technique showed that the mean concentration of particulate matter over Xishan were lower than that of urban stations in the amplitude range of 7%?21% in various weather patterns. The smaller (7%?9%) concentration difference between the urban stations and the Xishan station could be found at two types of weather conditions, when there were a regional heavy pollution or a regional clean air quality, respectively.