Characterization of aerosol growth events over Ellesmere Island during the summers of 2015 and 2016

Tremblay, Samantha; Picard, Jean-Christophe; Bachelder, Jill O.; Lutsch, Erik; Strong, Kimberly; Fogal, Pierre; Leaitch, W. Richard; Sharma, Sangeeta; Kolonjari, Felicia; Cox, Christopher J.; Chang, Rachel Y.-W.; Hayes, Patrick L.

doi:10.5194/acp-19-5589-2019

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Characterization of aerosol growth events over Ellesmere Island during the summers of 2015 and 2016

2019
By Tremblay, Samantha ; Picard, Jean-Christophe ; Bachelder, Jill O. ; ...
Source: Atmos. Chem. Phys., 19, 5589–5604, 2019

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Journal Title:

Atmospheric Chemistry and Physics
Personal Author:

Tremblay, Samantha ; Picard, Jean-Christophe ; Bachelder, Jill O. ; Lutsch, Erik ; Strong, Kimberly ; ... More +

Tremblay, Samantha ; Picard, Jean-Christophe ; Bachelder, Jill O. ; Lutsch, Erik ; Strong, Kimberly ; Fogal, Pierre ; Leaitch, W. Richard ; Sharma, Sangeeta ; Kolonjari, Felicia ; Cox, Christopher J. ; Chang, Rachel Y.-W. ; Hayes, Patrick L. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

The occurrence of frequent aerosol nucleation and growth events in the Arctic during summertime may impact the region's climate through increasing the number of cloud condensation nuclei in the Arctic atmosphere. Measurements of aerosol size distributions and aerosol composition were taken during the summers of 2015 and 2016 at Eureka and Alert on Ellesmere Island in Nunavut, Canada. These results provide a better understanding of the frequency and spatial extent of elevated Aitken mode aerosol concentrations as well as of the composition and sources of aerosol mass during particle growth. Frequent appearances of small particles followed by growth occurred throughout the summer. These particle growth events were observed beginning in June with the melting of the sea ice rather than with the polar sunrise, which strongly suggests that influence from the marine boundary layer was the primary cause of the events. Correlated particle growth events at the two sites, separated by 480 km, indicate conditions existing over large scales play a key role in determining the timing and the characteristics of the events.
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Aerosols
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Atmos. Chem. Phys., 19, 5589–5604, 2019
DOI:

https://doi.org/10.5194/acp-19-5589-2019
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Journal Article
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CC BY
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urn:sha256:65556848cb6c4792abb239ef8be5e4453efc4122f16ff57ce81560820decaae7
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Characterization of aerosol growth events over Ellesmere Island during the summers of 2015 and 2016

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