Frequently Asked Questions (FAQ)

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1. Where can I find the available data?
The available Envisat-MERIS S10 data can be found in the catalogue. You can browse the data without registering (goto site). However, if you would like to order data, you need to be registered (see Q2).
2. How do I register myself so that I can order Envisat-MERIS S10 data?
In order to register, navigate to the following website (click here) After registration, you are able to login, browse the catalogue and order data. If you are registered as a user for the Envisat-MERIS S10 or the Geoland2-BIOPAR service, you do not need to register again. You can use that username and password to search and order data.
3. I forgot my password.
Please contact the Helpdesk.
4. How do I download the ordered data?
In order to download the ordered data, you need to use an FTP-client, like FileZilla, CuteFTP or other. In the host bar you put the site's name (catftp.vgt.vito.be). Fill in your username and password and click on connect. 
5. How to order a large amount of data (massive order)?
If you would like a large amount of data, e.g. the whole archive for certain region of interest, or for one year the entire globe, it is best to get a massive order. A massive order can be obtained by contactin the Helpdesk. We need the following information:
  • username
  • region of interest
  • start- and enddate
6. How to read the MERIS Image files?
Envisat-MERIS S10 data are delivered in ENVI format (.img, .hdr). These data can be read directly in the ENVI program. However, if you have other image processing software, it is useful to convert your data to another format. We suggest the following procedure:

Download and use FWTools. This is actually a "small" package of GDAL utilities & library, together with other free/open source geospatial software. GDAL is indeed the software part we need for this (http://www.gdal.org).
Though it does not always come with the latest GDAL version,the FWTools (or “Frank Warmerdam Tools” in full) are pre-compiled for Windows / Linux platforms and therefore easier to install.Of course, many free/open source GIS and Remote Sensing software packages these days come shipped with a copy of GDAL, so there are alternatives.
To download/install FWTools:

Once installed, you should be able to execute the gdal_translate utility, located in the “bin” folder of the installation, to perform the desired format conversion (http://www.gdal.org/formats_list.html, default is Geotiff (Gtiff)):

  • gdal_translate –of IDA yourInputMetOpFile.img yourOutputIDAFila.GTiff, of course adding the path (c:\...) as required. Before running the command, you should add the following line to the .hdr file: "interleave = bsq".

http://www.gdal.org/gdal_translate.html explains other gdal_translate options.

7. My question is not answered
If your question is not answered on this page, you can contact us.