Articles | Volume 13, issue 10
Research article
26 Oct 2020
Research article |  | 26 Oct 2020

A new method to correct the electrochemical concentration cell (ECC) ozonesonde time response and its implications for “background current” and pump efficiency

Holger Vömel, Herman G. J. Smit, David Tarasick, Bryan Johnson, Samuel J. Oltmans, Henry Selkirk, Anne M. Thompson, Ryan M. Stauffer, Jacquelyn C. Witte, Jonathan Davies, Roeland van Malderen, Gary A. Morris, Tatsumi Nakano, and Rene Stübi

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Cited articles

Davies, J., Tarasick, D. W., McElroy, C. T., Kerr, J. B., Fogal, P. F., and Savastiouk, V.: Evaluation of ECC Ozonesonde Preparation Methods from Laboratory Tests and Field Comparisons during MANTRA, Proceedings of the Quadrennial Ozone Symposium Sapporo, Japan, 2000, edited by: Bojkov, R. D. and Kazuo, S., 137–138, 2000. 
De Muer, D., and Malcorps, H.: The frequency response of an electrochemical ozone sonde and its application to the deconvolution of ozone profiles, J. Geophys. Res., 89, 1361–1372,, 1984. 
Flamm, D. L.: Analysis of ozone at low concentrations with boric acid buffered KI, Environ. Sci. Technol., 11, 879–983, 1977. 
Huang, L.-J., Chen, M.-J., Lai, H.-H. Hsu, H.-T., and Lin, C.-H.: New Data Processing Equation to Improve the Response Time of an Electrochemical Concentration Cell (ECC) Ozonesonde, Aerosol Air Qual. Res., 15, 935–944, 2015. 
Imai, K., Fujiwara, M., Inai, Y., Manago, N., Suzuki, M., Sano, T., Mitsuda, C., Naito, Y., Hasebe, F., Koide, T., and Shiotani, M.: Comparison of ozone profiles between Superconducting Submillimeter-Wave Limb-Emission Sounder and worldwide ozonesonde measurements, J. Geophys. Res.-Atmos., 118, 12755–12765,, 2013. 
Short summary
The time response of electrochemical concentration cell (ECC) ozonesondes points to at least two distinct reaction pathways with time constants of approximately 20 s and 25 min. Properly considering these time constants eliminates the need for a poorly defined "background" and allows reducing ad hoc corrections based on laboratory tests. This reduces the uncertainty of ECC ozonesonde measurements throughout the profile and especially in regions of low ozone and strong gradients of ozone.