grey layout spacer                                                 NEAR REAL-TIME       NOTIFICATIONS       PRODUCTS       HIGHLIGHTS
print page
 

Specification of the data file formats

The data used to make the images (maps) available at the website are in general also available in some form. Both the availability and the form depend on the satellite instrument: See also the section on the Presentation and delivery of the data. Links to the relevant data files -- if available -- are given on the web pages showing the images (maps).
 

SCIAMACHY based data

The SO2 data based on SCIAMACHY is delivered in two forms:
  • as ASCII files for daily data at the coordinates of the measurements (at orbit coordinates)

  • as HDF-4 files for daily data (at the coordinates of a rectangular latitude-longitude grid)
The data product files mention, among others, version number (see the chapter Process version history). They also have been given a product status, for a quick-look indication on the status of the data product:

status description
Archive & NRT data for SO2 slant and column data delivered via the Archive Service (ASCII and HDF data files)

 
The data file structure is described on separate pages:

 
===> Some notes regarding downloading of data files and images
 

OMI based data

The SO2 data based on OMI measurements at orbit coordinates is provided by NASA in their HDF5-EOS format. The NRT data used for the images is not available for download to third parties. The off-line data usually follows 2 or 3 days later and is available via the NASA website, which also gives access to a description of the (rather complex) data format. It is also possible to contact the US team (NASA) and the Dutch team (KNMI).

It is not yet certain whether daily composites of OMI data on a latitude-longitude grid will be made. Monthly average data will be provided on the same grid as the SCIAMACHY data, in the same format: HDF-4; see the links above for more information.
 

GOME-2 based data

The SO2 data based on GOME-2 is delivered in one form:
  • as ASCII files for daily data at the coordinates of the measurements (at orbit coordinates)

status description
Archive & NRT data for SO2 slant and column data delivered via the Archive Service (ASCII and HDF data files)

 
The data file structure is described on a separate page:

 

IASI based data

The SO2 DBT data based on IASI measurements at orbit coordinates is provided by EUMETSAT. It is also possible to contact the ULB team (Belgium).

 

AIRS based data

The SO2 DBT data based on AIRS measurements at orbit coordinates is provided by NASA/JPL. It is also possible to download this data with the Land Atmospheric Near real time Capability for EOS (LANCE) website using the EOSDIS User Registration System.
 
Link naar de website van het Federaal Wetenschapsbeleid      grey layout spacer Link naar de Federale Portaalsite
 
TEMIS Home Page  PROMOTE Home Page  O3M SAF Home Page Last update on 01 Mar 2011