Trends and annual cycles in soundings of Arctic tropospheric ozone

Christiansen, Bo; Jepsen, Nis; Kivi, Rigel; Hansen, Georg; Larsen, Niels; Korsholm, Ulrik Smith

doi:https://doi.org/10.5194/acp-17-9347-2017

Articles | Volume 17, issue 15

https://doi.org/10.5194/acp-17-9347-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Twenty-five years of operations of the Network for the Detection...

https://doi.org/10.5194/acp-17-9347-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 15

Research article

|

04 Aug 2017

Research article |

| 04 Aug 2017

Trends and annual cycles in soundings of Arctic tropospheric ozone

Bo Christiansen, Nis Jepsen, Rigel Kivi, Georg Hansen, Niels Larsen, and Ulrik Smith Korsholm

Supplement

https://doi.org/10.5194/acp-17-9347-2017-supplement

Data sets

The ozonesonde data in the NDACC database NDACC http://www.ndsc.ncep.noaa.gov/data/

World Meteorological Organization-Global Atmosphere Watch Program (WMO-GAW)/World Ozone and Ultraviolet Radiation Data Centre (WOUDC) [Data] WMO/GAW Ozone Monitoring Community https://doi.org/10.14287/10000001

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Short summary

Ozone soundings in the troposphere from nine Arctic stations covering the period 1984–2014 have been analyzed. Stations with the best data coverage show a consistent and significant temporal variation with a maximum near 2005 followed by a decrease. Some significant changes are found in the annual cycle in agreement with the notion that the ozone summer maximum is appearing earlier in the year. Such changes in Arctic ozone in the free troposphere have not been reported before.