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Title: Vertical stratification of the air microbiome in the lower troposphere
Authors: Drautz-Moses, Daniela Isabel
Luhung, Irvan
Gusareva, Elena S.
Kee, Carmon
Gaultier, Nicolas Eugene
Premkrishnan, Balakrishnan N. V.
Lee, Choou Fook
Leong, See Ting
Park, Changsook
Yap, Zhei Hwee
Heinle, Cassie Elizabeth
Lau, Kenny Jia Xu
Purbojati, Rikky Wenang
Lim, Serene Boon Yuean
Lim, Yee Hui
Kutmutia, Shruti Ketan
Aung, Ngu War
Oliveira, Elaine Lopes
Ng, Soo Guek
Dacanay, Justine
Ang, Poh Nee
Spence, Samuel D.
Phung, Wen Jia
Wong, Anthony
Kennedy, Ryan J.
Kalsi, Namrata
Sasi, Santhi Puramadathil
Chandrasekaran, Lakshmi
Uchida, Akira
Junqueira, Ana Carolina M.
Kim, Hie Lim
Hankers, Rudolf
Feuerle, Thomas
Corsmeier, Ulrich
Schuster, Stephan Christoph
Keywords: Engineering::Environmental engineering
Issue Date: 2022
Source: Drautz-Moses, D. I., Luhung, I., Gusareva, E. S., Kee, C., Gaultier, N. E., Premkrishnan, B. N. V., Lee, C. F., Leong, S. T., Park, C., Yap, Z. H., Heinle, C. E., Lau, K. J. X., Purbojati, R. W., Lim, S. B. Y., Lim, Y. H., Kutmutia, S. K., Aung, N. W., Oliveira, E. L., Ng, S. G., ...Schuster, S. C. (2022). Vertical stratification of the air microbiome in the lower troposphere. Proceedings of the National Academy of Sciences of the United States of America, 119(7).
Project: MOE2013-T3-1-013 
Journal: Proceedings of the National Academy of Sciences of the United States of America 
Abstract: The troposphere constitutes the final frontier of global ecosystem research due to technical challenges arising from its size, low biomass, and gaseous state. Using a vertical testing array comprising a meteorological tower and a research aircraft, we conducted synchronized measurements of meteorological parameters and airborne biomass (n = 480) in the vertical air column up to 3,500 m. The taxonomic analysis of metagenomic data revealed differing patterns of airborne microbial community composition with respect to time of day and height above ground. The temporal and spatial resolution of our study demonstrated that the diel cycle of airborne microorganisms is a ground-based phenomenon that is entirely absent at heights >1,000 m. In an integrated analysis combining meteorological and biological data, we demonstrate that atmospheric turbulence, identified by potential temperature and high-frequency three-component wind measurements, is the key driver of bioaerosol dynamics in the lower troposphere. Multivariate regression analysis shows that at least 50% of identified airborne microbial taxa (n = ∼10,000) are associated with either ground or height, allowing for an understanding of dispersal patterns of microbial taxa in the vertical air column. Due to the interconnectedness of atmospheric turbulence and temperature, the dynamics of microbial dispersal are likely to be impacted by rising global temperatures, thereby also affecting ecosystems on the planetary surface.
ISSN: 0027-8424
DOI: 10.1073/pnas.2117293119
Rights: © The Authors. This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ASE Journal Articles
SCELSE Journal Articles

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