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ACCENT AT-2 contribution
Introduction ELearning DOAS-Workshop DANDELIONS CINDI NO2-Workshop Reports Links Contact
Introduction:
The ACCENT project (Atmospheric Composition Change - the European Network) is an European Network of Excellence, linking more than 45 institutions working on aspects of atmospheric science in the troposphere throughout Europe. One of the subprojects of ACCENT is AT2 which is dealing with the development, validation, use and integration of satellite measurements for atmospheric chemistry and aerosol applications. The AT2 evolved from the TROPOSAT project which was part of EUROTRAC-2.
The Institute of Environmental Physics at the University of Bremen has several PI (Principle Investigator) contributions to the AT-2 project and also takes part in a number of other ACCENT facilitated activities briefly listed below.
ELearning Module on Tropospheric NO2 Retrieval:
Within the ACCENT project, our group contributed strongly to an ELearning module on the retrieval of tropospheric NO2 columns from nadir satellite measurements of UV/visbile radiances. The main goal of this module is to give an interested student the opportunity to interactively learn more on the physical fundamentals, the general concepts and the difficulties of the retrieval process. The module comes with a lot of examples and on-line exercises but can of course not replace a lecture.
To enter the ELearning module, click here.
DOAS-Workshop:
In March 2006, the Third International DOAS Workshop took place in Bremen with support from the ACCENT project. nearly 50 oral presentations and 30 posters were presented over three days on all aspects of development and application of the DOAS technique.
More details can be found on the webpage of the 3rd DOAS workshop. A CD with the presentations given is available on request.
DANDELIONS Campaign:
As part of the Dutch project DANDELIONS (Dutch Aerosol and Nitrogen Dioxide Experiments for Validation of OMI and SCIAMACHY), two validation campaigns were held in Cabauw, The Netherlands in May - July 2005 and September 2006. ACCENT provided funding for participation of the IUP Bremen MAXDOAS instrument (see our BREDOM page) as well as instruments from IASB/BIRA and the IUP Heidleberg.
The data taken by our instrument have been used to provide validation for tropospheric measurements from OMI and SCIAMACHY. Some first results can be found in the posters listed below:
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Celarier, E. A., Brinksma, E. J., Gleason, J. F., Veefkind, J. P., Cede, A, Herman, J. R., Ionov, D., Goutail, F., Pommereau, J.-P., Lambert, J.-C., van Roozendael, M., Pinardi, G., Wittrock, F., Schönhardt, A., Richter, A., Ibrahim, O. W. , Wagner, T., Bojkov, B., Mount, G., Spinei, E., Chen, C. M. Pongetti, T. J. , Sander, S. P., Bucsela, E. J., Wenig, M. O. , Swart, D. P. J., Volten, H., Kroon, M., and Levelt, P. F., Validation of Ozone Monitoring Instrument nitrogen dioxide columns, J. Geophys. Res., 113, D15S15, doi:10.1029/2007JD008908, 2008
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Brinksma, E., G. Pinardi, R. Braak, H. Volten, A. Richter, A. Schönhardt, M. Van Roozendael, C. Fayt, C. Hermans, R. Dirksen, T. Vlemmix, A.J.C Berkhout, D.P.J. Swart, H. Oetjen, F. Wittrock, T. Wagner, O. W. Ibrahim, G. de Leeuw, M. Moerman, L. Curier, E. A. Celarier, W. H. Knap, J. P. Veefkind, H.J. Eskes, M. Allaart, R. Rothe, A. J. M. Piters, and P. Levelt (2008), The 2005 and 2006 DANDELIONS NO2 and Aerosol Intercomparison Campaigns, J. Geophys. Res., 113, D16S46, doi:10.1029/2007JD008808
- MAXDOAS measurements from the DANDELIONS campaigns, A. Schönhardt et al., DPG Frühjahrstagung, March 2007
- Satellite Validation of Tropospheric Trace Gases with MAX-DOAS Measurements during the DANDELIONS field campaign, Oetjen et al., EGU meeting, April 2006
CINDI Campaign:
TBD
Workshop on tropospheric NO2 from Satellites:
In September 2007, a workshop on the retrieval, validation and application of tropospheric NO2 from satellite measurements has been organised as part of the ACCENT AT2 activities. The workshop was hosted by KNMI. All details can be found on the workshop web page.
Reports:
For the ACCENT AT2 PI project "Monitoring Changes in Tropospheric Composition from Space" (PI A. Richter), the following reports can be downloaded:
For the ACCENT AT2 PI project "Retrieval of vertical columns of water vapour from SCIAMACHY/ENVISAT satellite data" (PI S. Noël, see also AMC-DOAS web page), the following reports can be downloaded:
The full annual reports of the AT-2 project are available on the AT-2 page.
Links:
Contact:
If you are interested in more information on the AT-2 contributions of the DOAS group at the IUP Bremen, please contact Andreas Richter.