Improving data quality in long-term Canadian ozone sounding records

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https://gml.noaa.gov/publications/annual_meetings/2023/abs.php?refnum=78-230424-A

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http://hdl.handle.net/11603/41357

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UMBC GESTAR II
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https://orcid.org/0000-0002-7829-0920

Date

2023

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preprints
conference papers and proceedings
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

An abrupt change in ozone bias relative to several satellite sensors --a total column ozone (TCO) “dropoff” of about 2-3% –has been reported at number of ozonesonde stations (Stauffer et al., 2020), including Canadian stations. The dropoff affects stratospheric measurements from the EnSci ozonesonde, after about 2013 (approximately serial number 25000). Corrections and additional data have reduced the estimated dropoff at mostCanadian sites (Stauffer et al., 2022). The Canadian network recently switched to Science Pump sondes (after serial number 32000), and this has reversed the dropoff, and approximately restored agreement with satellite sensors.