Xue Zhang

• Jinan University

Extremely high-temperature lightning generates NOx by electrolyzing nitrogen and oxygen molecules, regulating ozone concentration. The Pearl River Delta (PRD) is located in the world's high-value area of lightning density, and lightning-generated NOx (LNOx) cannot be ignored. Using the lightning flash data from Guangdong-Hong Kong-Macao Lightning L...

本研究利用武汉2020年7月（夏季）和10月（秋季）的在线观测数据,同时将颗粒物的光学参数和化学组分数据输入正定矩阵因子分解(PMF)源解析模型,对PM2.5消光系数的源贡献进行定量解析.研究发现,对吸收系数贡献较大的源为机动车(66.3%)和工业源(14.2%),对散射系数贡献较大的源为以硝酸盐为主的二次无机盐 Ⅰ (38.4%)和机动车(27.0%),光散射的源贡献率呈现出明显的季节变化,二次无机盐 Ⅰ 在夏季(14.6%)的贡献较秋季(47.4%)显著降低.消光系数源贡献方面,夏季机动车(37.2%)和以硫酸盐为主的二次无机盐 Ⅱ (21.2%)对消光的贡献较大,而秋季主要的消光源为二次无机盐 Ⅰ (44.7%)和机动车(26.7%).最后,本文还获取了几个重要源的波长吸收指数(AAE...

Based on regular surface observation meteorological data, data of six kinds of air quality parameters, actinic radiation data, aerosol scattering and absorption coefficients, single scattering albedo, and aerosol extinction coefficient and depolarization ratio retrieved by lidar data from December 6, 2017 to January 3, 2018 in Guangzhou, this paper...

In late September 2019, the longest and most extensive ozone (O3) pollution process occurred at Pearl River Delta. Base on the observational data, surface-level O3, vertical distribution characteristics boundary layer O3 as well as its effect on surface-level O3 are thoroughly analyzed. The O3 lidar results showed similar vertical O3 profiles both...