Ifferent cities. Study Zone Beijing Taihu Lanzhou Spring 23 7 2 Summer time 13 3 5 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 discovered that the EBC concentrations in Xuzhou through the heating season were drastically greater than these through the nonheating season, and the brown carbon content through the heating season was greater than that through the nonheating season. In terms of the source of EBC, our study shows that the supply through the heating season is mainly coal and biomass applied for heating. The sources of aerosols through the nonheating season mostly consist of petroleum and also other liquid sources employed for transportation. Throughout the period of higher EBC concentrations, the heating season was primarily concentrated throughout the Chinese Spring Festival, and the nonheating season was concentrated throughout periods of low rainfall. Backward trajectory analysis shows that through the heating season, the vast majority of EBC concentrations are derived from northern and northwestern winds. The results show that the provinces to the north would be the major supply of EBC in Xuzhou. The possible supply contribution function (PSCF) model obtains similar results because the backward trajectory analysis. The majority in the heating season pollution comes in the north, as well as the sources in the nonheating season are evenly distributed in the location surrounding Xuzhou. As a result, these final results indicate that EBC o-Phenanthroline Protocol emissions during the heating season in northern China, including these of Xuzhou, are higher and that there is a danger that pollutants will diffuse into low-concentration regions inside the atmosphere. While controlling EBC emissions and suppressing pollution sources, Interest need to be offered towards 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 of your manuscript. Funding: This analysis was funded by the National Organic Science Foundation of China (grant quantity 41701391) and Essential Research and Development System of Guangxi (AB18050014). Institutional Critique Board Statement: Not applicable. Informed Consent Statement: Not applicable. Information Availability Statement: Data sharing just isn’t applicable. Conflicts of Interest: The authors declare no conflict of interest.
atmosphereArticleEffects of Linewidth Broadening Approach 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 Essential Laboratory of Pulsed Power Laser Technology, School 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 Strategy on Recoil of Sodium Laser Guide Star. Atmosphere 2021, 12, 1315. https://doi.org/10.3390/ atmos12101315 Academic Editors: Nataliya V.
