An Observational Constraint on Aviation-Induced Cirrus From the COVID-19-Induced Flight Disruption

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dc.contributor.authorDigby, Ruth A. R.
dc.contributor.authorGillett, Nathan P.
dc.contributor.authorMonahan, Adam H.
dc.contributor.authorCole, Jason N. S.
dc.date.accessioned2022-04-01T13:07:51Z
dc.date.available2022-04-01T13:07:51Z
dc.date.copyright2021en_US
dc.date.issued2021-10
dc.description.abstractGlobal aviation dropped precipitously during the Covid-19 pandemic, providing an unprecedented opportunity to study aviation-induced cirrus (AIC). AIC is believed to be responsible for over half of aviation-related radiative forcing, but until now, its radiative impact has only been estimated from simulations. Here, we show that satellite observations of cirrus cloud do not exhibit a detectable global response to the dramatic aviation reductions of spring 2020. These results indicate that previous model-based estimates may overestimate AIC. In addition, we find no significant response of diurnal surface air temperature range to the 2020 aviation changes, reinforcing the findings of previous studies. Though aviation influences the climate through multiple pathways, our analysis suggests that its warming effect from cirrus changes may be smaller than previously estimated.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC). Grant Number: RGPIN-2019-04968en_US
dc.identifier.citationDigby, R. A. R., Gillett, N. P., Monahan, A. H., & Cole, J. N. S. (2021). An observational constraint on aviation-induced cirrus from the COVID-19-induced flight disruption. Geophysical Research Letters, 48(20), e2021GL095882. https://doi.org/10.1029/2021GL095882en_US
dc.identifier.urihttps://doi.org/10.1029/2021GL095882
dc.identifier.urihttp://hdl.handle.net/1828/13822
dc.language.isoenen_US
dc.publisherGeophysical Research Lettersen_US
dc.subjectCOVID-19
dc.subjectaviation
dc.subjectcirrus
dc.subjectdiurnal temperature range
dc.subjectCanadian Centre for Climate Modelling and Analysis (CCCma)
dc.subject.departmentSchool of Earth and Ocean Sciences
dc.titleAn Observational Constraint on Aviation-Induced Cirrus From the COVID-19-Induced Flight Disruptionen_US
dc.typeArticleen_US

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