Spatio-temporal change and influencing factors of tropospheric NO2 column density of Beijing-Tianjin-Hebei Region in the decade based OMI product. - Chunyan Zhou; Qing Li 023; Yingxia He; Pengfei Ma; Hui Chen; Zhongting Wang; Lijuan Zhang; Huiqin Mao; Yuhuan Zhang; Cuihong Chen (IGARSS, 2016)