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Tropospheric NO2 from GOME and SCIAMACHY for CONTRACE-2
Introduction Data References Links Contact
Introduction:
The
CONTRACE (Convective
Transport of Trace Gases into the Upper Troposphere
over Europe: Budget and Impact on Chemistry)
project is an atmospheric research program funded
by the German "Bundesministerium für Bildung und Forschung" (BMBF) through the
Atmospheric Research Program 2000 (AFO2000) and coordinated by the
DLR. The objective of CONTRACE is to
study and quantify the importance of
convective transport of trace gases in the UT above Europe, and in particular
- to investigate the relative importance of convective clouds, frontal systems and long-range advection in transporting nitrogen oxides (NOX=NO+NO2), HOX precursors, and other chemical species into the UT over Europe including variation with season;
- to quantify the total convective transport of NOX and other ozone precursors over Europe;
- to compare the contribution from convection to the trace gas budget of the UT with the contributions by aircraft emissions and lightning;
- to investigate the impact of convectively uplifted trace chemicals on the photochemical balance of the UT.
In support of CONTRACE, tropospheric excess columns of NO2 as derived from measurements of the Global Ozone Monitoring Experiment (GOME) and the SCIAMACHY instrument on Envisat are made available on this site. The tropospheric excess column is defined as the integrated tropospheric NO2 amount that is in excess of that measured above a clean air reference sector, usually the Pacific. All GOME plots shown on this page are derived from GOME Near Real Time measurements (courtesy of ESA/ESRIN/DLR).
Please note,
that no cloud clearance has been applied to the data. Therefore, regions covered
with clouds can be misinterpreted as regions with low tropospheric NO2
abundances!
More details on the
analysis procedures can be found in the references
given below.
Data:
The plots below are produced automatically and are based on GOME Near Real Time spectra and SCIAMACHY raw data. Usually, plots should be available with a delay of one day, but as there is no extra funding for this web page, maintenance does not have a high priority. If you experience any problems, please contact Andreas Richter.
As result of a problem with the low rate tape recorder on ERS-2, no global GOME data is available since June 23rd, 2003.
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More data is available in our group off-line. If you have any requests, please contact Andreas Richter.
References:
- A. Stohl, H. Huntrieser, A. Richter, S. Beirle, O. Cooper, S. Eckhardt, C. Forster, P. James, N. Spichtinger, M. Wenig, T. Wagner, J. Burrows, and U. Platt, Rapid intercontinental air pollution transport associated with a meteorological bomb, Atmos. Chem. Phys., 3, 969-985, 2003
- D. P. Edwards, J.-F. Lamarque, J.-L, Attie, L. K. Emmons, A. Richter, J.-P. Cammas, J. C. Gille, G. L. Francis, M. N. Deeter, J. Warner, D. C. Ziskin, L. V. Lyjak, J. R. Drummond, and J. P. Burrows, Tropospheric Ozone Over the Tropical Atlantic: A Satellite Perspective, JGR, 108(D8), 4237, doi:10.1029/2002JD002927, 2003
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A. Lauer, M. Dameris, A. Richter, and J. P. Burrows , Tropospheric NO2 columns: a comparison between model and retrieved data from GOME measurements, Atmos. Chem. Phys., 2, 67–78, 2002
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Heland, J., Schlager, H., Richter, A., Burrows, J. P., First comparison of tropospheric NO2 column densities retrieved from GOME measurements and in situ aircraft profile measurements, GRL, doi:10.1029/2002GL015528, 2002
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Richter, A. and J.P. Burrows, Retrieval of Tropospheric NO2 from GOME Measurements, Adv. Space Res., 29(11) ,1673-1683, 2002
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Richter, A. and J.P. Burrows, A multi wavelength approach for the retrieval of tropospheric NO2 from GOME measurements, in proceedings of the ERS-ENVISAT symposium, Gothenburg October 2000, 2000.
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Velders, G. J. M.; C. Granier, R. W. Portmann, K. Pfeilsticker, M. Wenig, T. Wagner, U. Platt, A. Richter, and J. P. Burrows, Global tropospheric NO2 column distributions: Comparing 3-D model calculations with GOME measurements, JGR, D 106, 12643-12660, 2001.
Links:
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More on CONTRACE can be found on the CONTRACE home page at the DLR in Oberpfaffenhofen.
- More on GOME tropospheric NO2 can be found on our GOME NO2 page.
- More on SCIAMACHY tropospheric NO2 can be found on our SCIAMACHY NO2 page.
- More on the Global Ozone Monitoring Experiment (GOME) can be found on the University of Bremen GOME page, on the GOME page of DFD/DLR Oberpfaffenhofen, and at ESA/ESRIN.
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Many SCIAMACHY related links can be found on the German SCIAMACHY page.
Contact:
If you are interested in more information or GOME and SCIAMACHY tropospheric NO2 data, please contact Andreas Richter.