Articles | Volume 16, issue 4
https://doi.org/10.5194/acp-16-2207-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-2207-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
25 Feb 2016
Research article |
| 25 Feb 2016
Water vapour variability in the high-latitude upper troposphere – Part 2: Impact of volcanic eruptions
Christopher E. Sioris
CORRESPONDING AUTHOR
Department of Earth and Space Science and Engineering, York
University, Toronto, Canada, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
Jason Zou
Department of Physics, University of Toronto, 60 St. George. St.,
Toronto, ON, M5S 1A7, Canada
C. Thomas McElroy
Department of Earth and Space Science and Engineering, York
University, Toronto, Canada, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
Chris D. Boone
Department of Chemistry, University
of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
Patrick E. Sheese
Department of Physics, University of Toronto, 60 St. George. St.,
Toronto, ON, M5S 1A7, Canada
Peter F. Bernath
Department of Chemistry, University
of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
Department of Chemistry & Biochemistry, Old Dominion University,
4541 Hampton Blvd., Norfolk, VA 23529, USA
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William G. Read, Gabriele Stiller, Stefan Lossow, Michael Kiefer, Farahnaz Khosrawi, Dale Hurst, Holger Vömel, Karen Rosenlof, Bianca M. Dinelli, Piera Raspollini, Gerald E. Nedoluha, John C. Gille, Yasuko Kasai, Patrick Eriksson, Christopher E. Sioris, Kaley A. Walker, Katja Weigel, John P. Burrows, and Alexei Rozanov
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Paul A. Makar, Ayodeji Akingunola, Jack Chen, Balbir Pabla, Wanmin Gong, Craig Stroud, Christopher Sioris, Kerry Anderson, Philip Cheung, Junhua Zhang, and Jason Milbrandt
Atmos. Chem. Phys., 21, 10557–10587, https://doi.org/10.5194/acp-21-10557-2021, https://doi.org/10.5194/acp-21-10557-2021, 2021
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We have examined the effects of airborne particles on absorption and scattering of incoming sunlight by the particles themselves via cloud formation. We used an advanced, combined high-resolution weather forecast and chemical transport computer model, for western North America, and simulations with and without the connections between particles and weather enabled. Feedbacks improved weather and air pollution forecasts and changed cloud behaviour and forest-fire pollutant amount and height.
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Earth Syst. Sci. Data, 13, 1855–1903, https://doi.org/10.5194/essd-13-1855-2021, https://doi.org/10.5194/essd-13-1855-2021, 2021
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An overview of the SPARC Data Initiative is presented, to date the most comprehensive assessment of stratospheric composition measurements spanning 1979–2018. Measurements of 26 chemical constituents obtained from an international suite of space-based limb sounders were compiled into vertically resolved, zonal monthly mean time series. The quality and consistency of these gridded datasets are then evaluated using a climatological validation approach and a range of diagnostics.
Patrick E. Sheese, Kaley A. Walker, Chris D. Boone, Doug A. Degenstein, Felicia Kolonjari, David Plummer, Douglas E. Kinnison, Patrick Jöckel, and Thomas von Clarmann
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Output from climate chemistry models (CMAM, EMAC, and WACCM) is used to estimate the expected geophysical variability of ozone concentrations between coincident satellite instrument measurement times and geolocations. We use the Canadian ACE-FTS and OSIRIS instruments as a case study. Ensemble mean estimates are used to optimize coincidence criteria between the two instruments, allowing for the use of more coincident profiles while providing an estimate of the geophysical variation.
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Short summary
This paper shows that volcanic eruptions occurring at higher latitudes in windy environments can lead to significant perturbations to upper tropospheric (UT) humidity mostly due to entrainment of lower tropospheric moisture by wind-blown plumes.
This research was performed for the purpose of determining long-term trends in high-latitude UT water vapour. The steps involve building a monthly climatology and using it to deseasonalize the time series. Large observed anomalies are then studied.
This paper shows that volcanic eruptions occurring at higher latitudes in windy environments can...
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