SCIAMACHY and GOME-2 support for POLARCAT
The IUP-Bremen provides near realtime total BrO columns for the POLARCAT project to support flight planning and quick look interpretation. Data from two satellite instruments, SCIAMACHY and GOME-2 are used. All plots are produced automatically and without explicit quality control. Usually, the SCIAMACHY plots should be available 2 hours after measurement while the GOME-2 plots are produced each morning at about 10 UT. If you experience any problems, please contact Andreas Richter or Mathias Begoin.
The values plotted are atmospheric columns derived from the measurements assuming a stratospheric BrO profile. Over bright surfaces, this will give a good estimate of the total (tropospheric + stratospheric) column. Over dark surfaces, the tropospheric contribution will be underestimated. No cloud screening or correction is applied to give the best possible coverage. However, anything below optically thick clouds will be hidden from the satellite view and is missing in these figures.
GOME-2 is still in early phase and any GOME-2 products have to be seen as preliminary. The products shown here are derived at the IUP Bremen. They are based on lv1 data provided by EUMETSAT but are not official GOME-2 data products.
As GOME-2 has several overpasses per day in high latitudes, the MAXIMUM of all measurements taken on a given day is shown for each location. This ensures that no events are "missed", but will not give a correct average value. A more detailed analysis will follow after the campaign.
High resolution EPS images
The EPS files to go with the bitmaps accessible through the tables can also be downloaded directly from our POLARCAT directory.
More data is available in our group off-line. If you have any requests, please contact Andreas Richter.
Prior to using any of these plots in a publication, please contact Andreas Richter about an updated version!
If you are interested in more information or SCIAMACHY and GOME-2 tropospheric data, please contact Andreas Richter.