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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/amt-2017-397
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
04 Dec 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).
Homogenizing and Estimating the Uncertainty in NOAA’s Long Term Vertical Ozone Profile Records Measured with the Electrochemical Concentration Cell Ozonesonde
Chance W. Sterling1,2, Bryan J. Johnson1, Samuel J. Oltmans1, Herman G. J. Smit3, Allen F. Jordan1,2, Patrick D. Cullis1,2, Emrys G. Hall1,2, Anne M. Thompson4, and Jacquelyn C. Witte4,5 1National Oceanic and Atmospheric Administration, Boulder, CO, 80305, United States
2Cooperative Institute for Research in Environmental Sciences, Boulder, CO, 80309, United States
3Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research: Troposphere, Jülich, Germany
4NASA Goddard Space Flight Center, Greenbelt, MD, USA
5SSAI, Lanham, MD, USA
Abstract. NOAA’s program of long term monitoring of the vertical distribution of ozone with Electrochemical Concentration Cell (ECC) ozonesondes has undergone a number of changes over the 50 year record. In order to produce a homogenous data set, these changes must be documented and where necessary, appropriate corrections applied. This is the first comprehensive and consistent reprocessing of NOAA’s ozonesonde data records that corrects for these changes using the rawest form of the data (cell current and pump temperature) in native resolution as well as a point by point uncertainty calculation that is unique to each sounding. The reprocessing is carried out uniformly at all eight ozonesonde sites in NOAA’s network with differences in sensing solution and ozonesonde types accounted for in the same way at all sites. The corrections used to homogenize the NOAA ozonesonde data records greatly improve the ozonesonde measurements with an average one sigma uncertainty of ±4–6 % in the stratosphere and ±5–20 % in the troposphere. A comparison of the integrated column ozone from the ozonesonde profile with co-located Dobson spectrophotometers total column ozone measurements shows agreement within ±5 % for > 70 % of the profiles. Very good agreement is also found in the stratosphere between ozonesonde profiles and profiles retrieved from the Solar Backscatter Ultraviolet Instruments (SBUV).

Citation: Sterling, C. W., Johnson, B. J., Oltmans, S. J., Smit, H. G. J., Jordan, A. F., Cullis, P. D., Hall, E. G., Thompson, A. M., and Witte, J. C.: Homogenizing and Estimating the Uncertainty in NOAA’s Long Term Vertical Ozone Profile Records Measured with the Electrochemical Concentration Cell Ozonesonde, Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2017-397, in review, 2017.
Chance W. Sterling et al.
Chance W. Sterling et al.

Data sets

The US Dobson station network data record prior to 2015, re-evaluation of NDACC and WOUDC archived records with WinDobson processing software
R. D. Evans, I. Petropavlovskikh, A. McClure-Begley, G. McConville, D. Quincy, and K. Miyagawa
https://doi.org/10.5194/acp-17-12051-2017
The version 8.6 SBUV ozone data record: An overview,
R. D. McPeters, P. K. Bhartia, D. Haffner, G. L. Labow, and L. Flynn
https://doi.org/10.1002/jgrd.50597
Chance W. Sterling et al.

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Short summary
The Electrochemical Concentration Cell ozonesonde is a balloon-borne instrument that measures ozone to an altitude of ~ 30 km. This work summarizes the National Oceanic and Atmospheric Administration’s 50+ year, eight site ozonesonde network history, the processing techniques utilized to account for instrumental changes, and the uncertainty of the measurement. The ozonesonde measurements were compared to satellite measurements and agreed well. This important data set is more useful and robust.
The Electrochemical Concentration Cell ozonesonde is a balloon-borne instrument that measures...
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