[1] Zhang K, de Leeuw G, Yang Z, et al. The Impacts of the COVID-19 Lockdown on Air Quality in the Guanzhong Basin, China[J]. Remote Sensing, 2020, 12(18):3042.
[2] Guo J P, Xia F, Zhang Y, et al. Impact of Diurnal Variability and Meteorological Factors on the PM2.5-AOD Relationship:Implications for PM2.5 Remote sensing[J]. Environmental Pollution, 2017, 221:94-104.
[3] Zheng Y, Che H Z, Xia X G, et al. Five-year Observation of Aerosol Optical Properties and its Radiative Effects to Planetary Boundary Layer During Air Pollution Episodes in North China:Intercomparison of a Plain Site and a Mountainous Site in Beijing[J]. Science of The Total Environment, 2019, 674:140-158.
[4] Sarangi C, Tripathi S N, Kanawade V P, et al. Investigation of the Aerosol-Cloud-Rainfall Association Over the Indian Summer Monsoon Region[J]. Atmospheric Chemistry and Physics, 2017, 17(8):5185-5204.
[5] Li Z Q, Guo J P, Ding A J, et al. Aerosol and Boundary-layer Interactions and Impact on Air Quality[J]. National Science Review, 2017, 4(6):810-833.
[6] Von Schneidemesser E, Monks P S, Allan J D, et al. Chemistry and the Linkages Between Air Quality and Climate Change[J]. Chemical reviews, 2015, 115(10):3856-3897.
[7] Kong L, Tang X, Zhu J, et al. A 6-Year-Long (2013-2018) High-resolution Air Quality Reanalysis Dataset in China Based on the Assimilation of Surface Observations from CNEMC[J]. Earth System Science Data, 2021, 13(2):529-570.
[8] Che H., Gui K., Xia X., et al. Large Contribution of Meteorological Factors to Inter-decadal Changes in Regional Aerosol Optical Depth[J]. Atmospheric Chemistry and Physics, 2019, 19(16):10497-10523.
[9] Bevis M, Businger S, Herring T A, et al. GPS Meteorology:Remote Sensing of Atmospheric Water Vapor Using the Global Positioning System[J]. Journal of Geophysical Research:Atmospheres, 1992, 97(D14):15787-15801.
[10] Xu J, Ge X, Zhang X, et al. COVID-19 Impact on the Concentration and Composition of Submicron Particulate Matter in a Typical City of Northwest China[J]. Geophysical research letters, 2020, 47(19):e2020GL089035.
[11] Yang Y, Ren L, Li H, et al. Fast Climate Responses to Aerosol Emission Reductions During the COVID-19 Pandemic[J]. Geophysical Research Letters, 2020, 47(19):e2020GL089788.
[12] Yang Y, Smith S J, Wang H, et al. Variability, Timescales, and Nonlinearity in Climate Responses to Black Carbon Emissions[J]. Atmospheric Chemistry and Physics, 2019, 19(4):2405-2420.
[13] Le T, Wang Y, Liu L, et al. Unexpected Air Pollution With Marked Emission Reductions During the COVID-19 Outbreak in China[J]. Science, 2020, 369(6504):702-706.
[14] Huang X, Ding A, Gao J, et al. Enhanced Secondary Pollution Offset Reduction of Primary Emissions During COVID-19 Lockdown in China[J]. National Science Review, 2020, 8(2):nwaa137.
[15] Nichol J E, Bilal M, Ali M, et al. Air Pollution Scenario Over China During COVID-19[J]. Remote Sensing, 2020, 12(13):2100.
[16] Filonchyk M, Hurynovich V, Yan H, et al. Impact Assessment of COVID-19 on Variations of SO2, NO2, CO and AOD over East China[J]. Aerosol and Air Quality Research, 2020, 20(7):1530-1540.
[17] Ding J S, Chen J P. Assessment of Empirical Troposphere Model GPT3 Based on NGL's Global Troposphere Products[J]. Sensors, 2020, 20(13):3631.
[18] Saastamoinen J. Atmospheric Correction for the Troposphere and Stratosphere in Radio Ranging Satellites[J]. The use of artificial satellites for geodesy, 1972, 15:247-251.
[19] Huang L, Liu L, Chen H, et al. An Improved Atmospheric Weighted Mean Temperature Model and its Impact on GNSS Precipitable Water Vapor Estimates for China[J]. GPS Solutions, 2019, 23(2):51.
[20] Sun E, Xu X, Che H, et al. Variation in MERRA-2 Aerosol Optical Depth and Absorption Aerosol Optical Depth over China from 1980 to 2017[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2019, 186:8-19.
[21] Green M, Kondragunta S, Ciren P, et al. Comparison of GOES and MODIS Aerosol Optical Depth (AOD) to Aerosol Robotic Network (AERONET) AOD and IMPROVE PM2.5 Mass at Bondville, Illinois[J]. Journal of the Air & Waste Management Association, 2009, 59(9):1082-1091.
[22] Ukhov A, Mostamandi S, da Silva A, et al. Assessment of Natural and Anthropogenic Aerosol Qir Pollution in the Middle East Using MERRA-2, CAMS Data Assimilation Products, and High-Resolution WRF-Chem model Simulations[J]. Atmospheric Chemistry and Physics, 2020, 20(15):9281-9310.
[23] Zhang Q, Ye J, Zhang S, et al. Precipitable Water Vapor Retrieval and Analysis by Multiple Data Sources:Ground-based GNSS, Radio Occultation, Radiosonde, Microwave Satellite, and NWP Reanalysis Data[J]. Journal of Sensors, 2018, 2018.
[24] Tatem A J. WorldPop, Open Data for Spatial Demography[J]. Scientific data, 2017, 4(1):1-4.
[25] Jiang C, Xu T, Wang S, et al. Evaluation of Zenith Tropospheric Delay Derived from ERA5 Data over China Using GNSS Observations[J]. Remote Sensing, 2020, 12(4):663.
[26] Aliyu Y A, Botai J O. Appraising the Effects of Atmospheric Aerosols and Ground Particulates Concentrations on GPS-derived PWV Estimates[J]. Atmospheric Environment, 2018, 193:24-32.
[27] Klos A, Hunegnaw A, Teferle F N, et al. Statistical Significance of Trends in Zenith Wet Delay from re-processed GPS solutions[J]. GPS Solutions, 2018, 22(2):51.
[28] Zhao Q, Ma X, Yao W, et al. A Drought Monitoring Method Based on Precipitable Water Vapor and Precipitation[J]. Journal of Climate, 2020, 33(24):10727-10741.
[29] Nikolaidis R. Observation of Geodetic and Seismic Deformation With the Global Positioning System[M]. University of California, San Diego, 2002.
[30] Xia XG, Eck T F, Holben B N, et al. Analysis of the Weekly Cycle of Aerosol Optical Depth Using AERONET and MODIS Data[J]. Journal of Geophysical Research:Atmospheres, 2008, 113(D14).
[31] Lu X. Effectiveness of Government Enforcement in Driving restrictions:A Case in Beijing, China[J]. Environmental Economics and Policy Studies, 2016, 18(1):63-92.
[32] Chen J, Wang B, Huang S, et al. The Influence of Increased Population Density in China on Air Pollution[J]. Science of The Total Environment, 2020, 735:139456.
[33] Xiao Q, Ma Z, Li S, et al. The Impact of Winter Heating on Air Pollution in China[J]. PloS one, 2015, 10(1):e0117311.
[34] Chen X, Lv Y, Zhang W, et al. Comparison Between Dust and Haze Aerosol Properties of the 2015 Spring in Beijing Using ground-based Sun Photometer and Lidar[C]//AOPC 2015:Optical and Optoelectronic Sensing and Imaging Technology. International Society for Optics and Photonics, 2015, 9674:96740O.
[35] Mishra A K. Quantifying the Impact of Global Warming on Precipitation Patterns in India[J]. Meteorological Applications, 2019, 26(1):153-160.
[36] Xu J, Li C, Shi H, et al. Analysis on the Impact of Aerosol Optical Depth on Surface Solar Radiation in the Shanghai Megacity, China[J]. Atmospheric Chemistry & Physics Discussions, 2011, 11(1).11
[37] Miao Y, Liu S, Zheng Y, et al. Modeling the Feedback Between Aerosol and Boundary Layer Processes:A Case Study in Beijing, China[J]. Environmental Science and Pollution Research, 2016, 23(4):3342-3357.
[38] Miao Y, Guo J, Liu S, et al. Classification of Summertime Synoptic Patterns in Beijing and their Associations with Boundary Layer Structure Affecting Aerosol Pollution[J]. Atmospheric Chemistry and Physics, 2017, 17(4):3097-3110.
[39] Ma Y, Zhao Y, Liu J, et al. Effects of Temperature Variation and Humidity on the Death of COVID-19 in Wuhan, China[J]. Science of the total environment, 2020, 724:138226.
[40] Fan C, Li Y, Guang J, et al. The Impact of the Control Measures During the COVID-19 Outbreak on Air Pollution in China[J]. Remote Sensing, 2020, 12(10):1613.