Ifferent cities. Study Zone Beijing Taihu Lanzhou Spring 23 7 2 Summer DMPO In stock season 13 3 five Autumn 24 13 23 Winter 35 16 205. Conclusions This study used two years of EBC concentration measurements at seven wavelengths in an urban region in Xuzhou, China. We found that the EBC concentrations in Xuzhou during the heating season were substantially higher than these throughout the nonheating season, as well as the brown carbon content material throughout the heating season was larger than that during the nonheating season. When it comes to the supply of EBC, our study shows that the supply through the heating season is mainly coal and biomass used for heating. The sources of aerosols through the nonheating season mostly consist of petroleum as well as other liquid sources employed for transportation. Through the period of high EBC concentrations, the heating season was mostly concentrated throughout the Chinese Spring Festival, and also the nonheating season was concentrated throughout periods of low rainfall. Backward trajectory analysis shows that throughout the heating season, the vast majority of EBC concentrations are derived from northern and northwestern winds. The results show that the DPX-JE874 Purity & Documentation provinces to the north would be the key source of EBC in Xuzhou. The potential supply contribution function (PSCF) model obtains comparable outcomes as the backward trajectory evaluation. The majority from the heating season pollution comes in the north, along with the sources in the nonheating season are evenly distributed from the region surrounding Xuzhou. As a result, these outcomes indicate that EBC emissions throughout the heating season in northern China, which includes those of Xuzhou, are high and that there is a risk that pollutants will diffuse into low-concentration places inside the atmosphere. While controlling EBC emissions and suppressing pollution sources, focus need to be offered to the diffusion of pollution sources.Author Contributions: Writing, visualization, formal analysis, G.S.; methodology, W.C.; conceptualization, H.Z.; supervision, S.S.; validation, Y.W. All authors have study and agreed towards the published version in the manuscript. Funding: This research was funded by the National All-natural Science Foundation of China (grant quantity 41701391) and Essential Analysis and Improvement System of Guangxi (AB18050014). Institutional Critique Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: Data sharing just isn’t applicable. Conflicts of Interest: The authors declare no conflict of interest.
atmosphereArticleEffects of Linewidth Broadening Process on Recoil of Sodium Laser Guide StarXiangyuan Liu 1,two, , Xianmei Qian 3 , Rui He 1 , Dandan Liu 1 , Chaolong Cui three , Chuanyu Fan 1 and Hao YuanSchool of Electrical and Photoelectronic Engineering, West Anhui University, Lu’an 237012, China; [email protected] (R.H.); [email protected] (D.L.); [email protected] (C.F.); [email protected] (H.Y.) State Key Laboratory of Pulsed Energy Laser Technology, College of Electronic Countermeasures, National University of Defense Technologies, Hefei 230031, China Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; [email protected] (X.Q.); [email protected] (C.C.) Correspondence: [email protected]; Tel.: +86-Citation: Liu, X.; Qian, X.; He, R.; Liu, D.; Cui, C.; Fan, C.; Yuan, H. Effects of Linewidth Broadening Technique on Recoil of Sodium Laser Guide Star. Atmosphere 2021, 12, 1315. https://doi.org/10.3390/ atmos12101315 Academic Editors: Nataliya V.