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Tropospheric NO2 from GOME and SCIAMACHY for CONTRACE-2  


Introduction    Data    References    Links    Contact

Top 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.

Top 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.

SCIAMACHY:
July 2003 Europe
1 8 15 22 29
2 9 16 23 30
3 10 17 24 31
4 11 18 25  
5 12 19 26  
6 13 20 27  
7 14 21 28  
SCIAMACHY:
July 2003 Atlantic
1 8 15 22 29
2 9 16 23 30
3 10 17 24 31
4 11 18 25  
5 12 19 26  
6 13 20 27  
7 14 21 28  
GOME: June 2003
1 8 15 22 29
2 9 16 23 30
3 10 17 24  
4 11 18 25  
5 12 19 26  
6 13 20 27  
7 14 21 28  
SCIAMACHY: June 2003
1 8 15 22 29
2 9 16 23 30
3 10 17 24  
4 11 18 25  
5 12 19 26  
6 13 20 27  
7 14 21 28  

More data is available in our group off-line. If you have any requests, please contact Andreas Richter.

Top References:

Top Links:

Top Contact:

If you are interested in more information or GOME and SCIAMACHY tropospheric NO2 data, please contact Andreas Richter.