Studies of the human breathing

Neronov, Roman; Luk'yanov, G. A.; Rassadina, Anna; Voronin, A. A.; Malyshev, Aleksey; Seeger, Thomas

doi:10.23919/fruct.2017.8071330

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The first feature of human respiration is that we inhale fresh air mainly composed of nitrogen (78%) and oxygen (21%) and of various minor species including carbon dioxide (0.04%), natural aerosols and possible pollutants. In the exhaled air the concentration of carbon dioxide is enhanced to a much larger value, typically about 4-5% (Neronov et al ., 2017). It also contains a variety of microdroplets of various sizes that come from the respiratory tract and are mainly composed of water (98.2%) (Chen and Zhao, 2010).…”

Section: Human Emissionsmentioning

confidence: 99%

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and covid-19

Rowe¹,

Canosa

Drouffe³

et al. 2021

Preprint

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In this paper we develop a simple model of the inhaled flow rate of aerosol particles of respiratory origin i.e. that have been exhaled by other humans. A connection is made between the exposure dose and the probability of developing an airborne disease. This allows a simple assessment of the outdoor versus indoor risk of contamination to be made in a variety of meteorological situations. It is shown quantitatively that for most cases, the outdoor risk is orders of magnitude less than the indoor risk and that it can become comparable only for extremely specific meteorological and geographical situations. It sheds a light on various observations of Covid-19 spreading in mountain valleys with temperature inversions while at the same time other areas are much less impacted.HighlightsRisk of covid-19 airborne transmission.Quantitative assessment of outdoor versus indoor airborne risk of transmission.Meteorological and geographical influence on covid-19 airborne transmission.

show abstract

Section: Human Emissionsmentioning

confidence: 99%

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and covid-19

Rowe¹,

Canosa

Drouffe³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The first feature of human respiration is that we inhale fresh air mainly composed of nitrogen (78%) and oxygen (21%) and of various minor species including carbon dioxide (0.04%), natural aerosols and possible pollutants. In the exhaled air, the concentration of carbon dioxide is enhanced to a much larger value, typically about 4-5% ( Neronov et al , 2017 ). It also contains a variety of microdroplets of various sizes that come from the respiratory tract and are mainly composed of water (98.2%) ( Chen and Zhao, 2010 ).…”

Section: Human Emissionsmentioning

confidence: 99%

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and COVID-19

Rowe¹,

Canosa

Drouffe³

et al. 2021

Environmental Research

View full text Add to dashboard Cite

In this paper we develop a simple model of the inhaled flow rate of aerosol particles of respiratory origin i.e. that have been exhaled by other people. A connection is made between the exposure dose and the probability of developing an airborne disease. This allows a simple assessment of the outdoor versus indoor risk of contamination to be made in a variety of meteorological situations. It is shown quantitatively that for most cases, the outdoor risk is orders of magnitude less than the indoor risk and that it can become comparable only for extremely specific meteorological and topographical situations. It sheds light on various observations of COVID-19 spreading in mountain valleys with temperature inversions while at the same time other areas are much less impacted.

show abstract

Studies of the human breathing

Cited by 2 publications

References 14 publications

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and covid-19

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and covid-19

Simple quantitative assessment of the outdoor versus indoor airborne transmission of viruses and COVID-19

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