Global validation of improved SCIAMACHY scientific ozone limb data using ozonesonde measurements
Author:
Jia J., Rozanov A.ORCID, Ladstätter-Weißenmayer A., P. Burrows J.ORCID
Abstract
Abstract. In this manuscript, the latest SCIAMACHY limb ozone scientific vertical profiles, namely the current V2.9 and the upcoming V3.0, are extensively compared with ozone sonde data from the WOUDC database. The comparisons are made on a global scale from 2003 to 2011, involving 61 sonde stations. The retrieval processors used to generate V2.9 and V3.0 data sets are briefly introduced. The comparisons are discussed in terms of vertical profiles and stratospheric partial columns. Our results indicate that the V2.9 ozone profile data between 20–30 km is in good agreement with ground based measurements with less than 5% relative differences in the latitude range of 90° S–40° N (with exception of the tropical Pacific region where an overestimation of more than 10% is observed), which corresponds to less than 5 DU partial column differences. In the tropics the differences are within 3%. However, this data set shows a significant underestimation northwards of 40° N (up to ~15%). The newly developed V3.0 data set reduces this bias to below 10% while maintaining a good agreement southwards of 40° N with slightly increased relative differences of up to 5% in the tropics.
Publisher
Copernicus GmbH
Reference22 articles.
1. Backus, G. E. and Gilbert, F. E.: Uniqueness in the inversion of inaccurate gross Earth data, Philos. T. Roy. Soc. A, 266, 1173, 123–192, 1970. 2. Bovensmann, H., Burrows, J. P., Buchwitz, M., Frerick, J., Noël, S., Rozanov, V. V., Chance, K. V., and Goede, A. P. H.: SCIAMACHY: mission objectives and measurement modes, J. Atmos. Sci., 56, 127–150, 1999. 3. Brinksma, E. J., Bracher, A., Lolkema, D. E., Segers, A. J., Boyd, I. S., Bramstedt, K., Claude, H., Godin-Beekmann, S., Hansen, G., Kopp, G., Leblanc, T., McDermid, I. S., Meijer, Y. J., Nakane, H., Parrish, A., von Savigny, C., Stebel, K., Swart, D. P. J., Taha, G., and Piters, A. J. M.: Geophysical validation of SCIAMACHY Limb Ozone Profiles, Atmos. Chem. Phys., 6, 197–209, https://doi.org/10.5194/acp-6-197-2006, 2006. 4. Burrows, J., Hölzle, E., Goede, A., Visser, H., and Fricke, W.: SCIAMACHY – scanning imaging absorption spectrometer for atmospheric chartography, Acta Astronaut., 35, 445–451, 1995. 5. Eichmann, K.-U., von Savigny, C., Weigel, K., Reichl, P., Robert, C., Steinwagner, J., Bovensmann, H., and Burrows, J. P.: SCODA V1.9: SCIAMACHY Cloud Detection Algorithm from Limb Radiance Measurements, Algorithm Theoretical Baseline Document (ATBD), University of Bremen, Bremen, Germany, 2011.
|
|