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Research
Jacques Piazzola
Mediterranean Institute of Oceanography
Corresponding Author
ORCiD: https://orcid.org/0000-0001-8346-5732
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This work is licensed under a CC BY 4.0 License. Read Full License
Even if the people density, habits and displacements probably represent the most important causes of the SARS-Cov-2 virus propagation, the role of the atmospheric aerosol in COVID-19 outbreaks is significant and it needs to be further investigated. Therefore, we aimed to study if the aerosol properties related to the different sources and meteorological conditions we can observe in continental and coastal urbanized areas can have an influence on the atmospheric transport of the SARS-Cov-2 virus. This paper focuses on the lockdown period to reduce the differences in the social behavior. As an example, we investigated the contamination cases during March 2020 in two specific French areas located in both continental and coastal areas with regard to the meteorological conditions and the corresponding aerosol properties. To this end, we used both the optical depth (AOD) and the Angstrom exponent provided by the AERONET network. The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. In particular, our data show that moderate to strong onshore winds occurring in coastal regions, which allow large sea-spray production episodes, deal with smaller COVID-19 contamination rates. This suggests that the coagulation of SARS-Cov-2 viral particles with hygroscopic salty sea-spray aerosols would tend to inhibit its viral infectivity via possible reaction with NaCl, especially in high relative humidity environments.
Capsule: Our results suggest that maritime air-masses limit the SARS-Cov-2 impact via the role of the sea-spray.
Keywords
aerosols, sea-spray, SARS-Cov-2, AERONET
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A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research
Jacques Piazzola
Mediterranean Institute of Oceanography
Corresponding Author
ORCiD: https://orcid.org/0000-0001-8346-5732
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 3
Posted 21 Jan, 2021
No community comments so far
No comments provided
No comments provided
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Even if the people density, habits and displacements probably represent the most important causes of the SARS-Cov-2 virus propagation, the role of the atmospheric aerosol in COVID-19 outbreaks is significant and it needs to be further investigated. Therefore, we aimed to study if the aerosol properties related to the different sources and meteorological conditions we can observe in continental and coastal urbanized areas can have an influence on the atmospheric transport of the SARS-Cov-2 virus. This paper focuses on the lockdown period to reduce the differences in the social behavior. As an example, we investigated the contamination cases during March 2020 in two specific French areas located in both continental and coastal areas with regard to the meteorological conditions and the corresponding aerosol properties. To this end, we used both the optical depth (AOD) and the Angstrom exponent provided by the AERONET network. The results show that the analysis of aerosol ground-based data can be of interest to assess a virus survey. In particular, our data show that moderate to strong onshore winds occurring in coastal regions, which allow large sea-spray production episodes, deal with smaller COVID-19 contamination rates. This suggests that the coagulation of SARS-Cov-2 viral particles with hygroscopic salty sea-spray aerosols would tend to inhibit its viral infectivity via possible reaction with NaCl, especially in high relative humidity environments.
Capsule: Our results suggest that maritime air-masses limit the SARS-Cov-2 impact via the role of the sea-spray.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
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