Journal Pre-proof Variation of near surface atmosphere microbial communities at an urban and a suburban site in Philadelphia, PA, USA Justin Stewart, Kabindra M. Shakya, Teresa Bilinski, James Wilson, Sujith Ravi, Chong Seok Choi PII: S0048-9697(20)31866-0 DOI: https://doi.org/10.1016/j.scitotenv.2020.138353 Reference: STOTEN 138353 To appear in: Science of the Total Environment Received date: 2 February 2020 Revised date: 28 March 2020 Accepted date: 30 March 2020 Please cite this article as: J. Stewart, K.M. Shakya, T. Bilinski, et al., Variation of near surface atmosphere microbial communities at an urban and a suburban site in Philadelphia, PA, USA, Science of the Total Environment (2020), https://doi.org/10.1016/ j.scitotenv.2020.138353 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier.