Ifferent cities. Study Zone Beijing Taihu Lanzhou Spring 23 7 two Summer season 13 3 five Autumn 24 13 23 Winter 35 16 205. Conclusions This study utilised two years of EBC concentration measurements at seven wavelengths in an urban location in Xuzhou, China. We found that the EBC concentrations in Xuzhou throughout the heating season have been drastically greater than those throughout the nonheating season, as well as the brown carbon content throughout the heating season was higher than that during the nonheating season. In terms of the supply of EBC, our study shows that the source during the heating season is primarily coal and biomass employed for heating. The sources of aerosols throughout the nonheating season mainly consist of petroleum and also other liquid sources used for transportation. Through the period of higher EBC concentrations, the heating season was mainly concentrated throughout the Chinese Spring Festival, along with 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 outcomes show that the provinces to the north would be the primary supply of EBC in Xuzhou. The possible supply contribution function (PSCF) model obtains related outcomes as the backward trajectory analysis. The majority from the heating season pollution comes from the north, along with the sources from the nonheating season are evenly distributed from the region surrounding Xuzhou. Thus, these final results indicate that EBC emissions during the heating season in northern China, which includes these of Xuzhou, are higher and that there’s a threat that pollutants will diffuse into low-concentration locations inside the atmosphere. While controlling EBC emissions and suppressing pollution sources, consideration need to be offered to the diffusion of pollution sources.Author Contributions: Writing, visualization, formal evaluation, 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 research was funded by the National Natural Science Foundation of China (grant quantity 41701391) and Crucial Investigation and Improvement System of Guangxi (AB18050014). Institutional Critique Board (S Description Statement: Not FGF-2 Protein Purity & Documentation 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 Method on Recoil of Sodium Laser Guide StarXiangyuan Liu 1,2, , 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 Crucial Laboratory of Pulsed Energy Laser Technologies, School of Electronic Countermeasures, National University of Defense Technology, 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.
