Forum

ESA has their Sentinel science data hub:
https://scihub.copernicus.eu/

L2 data from ESA was made available last month.  I found some on the "S3 PreOps Hub"...

Sean

Matt,Our current funding only supports the distribution of the L1B data for Sentinel-3 OLCI.  We have a proposal in to provide funding for processing and distribution of L2 and above, and are awaiting the response from those who control the purse strings.  That said, the processing capabil...

Stephen,While scratching our heads over this one, we surmise that there is a race condition involved.  As refined files are generated they are checked to see if they match any active subscriptions.If so, a record in a table for that subscription is updated.  The new file replaces the old i...

Slava,

Yes, the height of the water body is accounted for in our data processing.  An adjustment to the Rayleigh correction is made based on the lake surface height relative to mean sea level.  Yes, ALL mission we support are so corrected.

Regards,
Sean

The source data are available from our L1/2 browser.  For MODIS, you would need to process the L1A data to produce an L1B and geolocation file to input into l2gen for processing.   SeaDAS is the software of choice :grin:  However, we do not yet support data processing under the W...

Cassandra,

The resolution is only a nominal resolution at nadir.  Off nadir, the pixels will grow.  For example, a 1km nominal pixel is more like 2x5 km at the edge of the swath.

Sean

Mohd,The bands *are* atmospherically corrected.The default atmospheric correction approach uses the NIR bands (748 and 869nm for MODIS), and so we do not report Rrs for the bands used in the aerosol determination in our standard products.  However, you can process the data to return the Rrs val...

Casandra, The 1km resolution bands will not magically obtain a higher resolution when processed at 250m.  The only bands that will truly be at 250m are the 645 and 859nm bands.The others will interpolated (but effectively be supersampled) to 250m resolution and will appear blockier than the nat...

You can use the Band Properties option to set the spectral wavelength for the bands manually (right click on the band in the File Manager tab to select the Properties GUI).
Once you have set the wavelengths, the Spectrum View GUI will identify the data as capable of being displayed.

Regards,
Sean

Correct, the L1B data do not include geolocation information.  For that you will need to generate the geolocation file, which SeaDAS is set up to do.  This is the same as it is for MODIS.  While the L1B for MODIS does include a subsampled geolocation data set, SeaDAS does not use it a...