This is just to try things … more info coming about CFOSAT soon (new sampling patterns …)
Since I spent 2 days this week in a CFOSAT meeting, I might as well share this with the wider WISE community:
Besides the L2 product for CFOSAT/SWIM wave spectra distributed by CNES, there is a L2S product distributed by Ifremer, with some info here
https://sextant.ifremer.fr/geonetwork/srv/api/records/12cfed8d-7645-442b-b8ef-a8d08decbaed
Personally this is the one I’ve used (in particular because so far the CNES L2 did not have any waves longer than 500 m… and when these are present in the real ocean, this leads to a very bad spectral shape in the L2 data … ). Both the L2 and L2S will have new versions soon so correct many of their defects. Also, it is likely that SWIM will use a different acquisition mode by the end of the year: instead of scanning through incidence angles 0, 2, 4, 6, 8, 10, we will probably get a cycle 0, 2, 10, 10, 10 which will have interesting benefits, in particular allowing for cross-spectral estimations between two cycles at 10° incidence, which is a great way to remove speckle noise.
Cheers, Fabrice
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Thanks a million @Fabrice.
I was about to post a question here on the same topic 
In L2S dataset, wave slope spectra are provided as a function of wavenumber and time, right? I assume that each time corresponds to a certain azimuth as the antenna rotates. If I were to compute the wave spectra E(k, theta), is it as simple as replacing the time variable with its corresponding azimuth for each cycle, or is there a different approach required? Do you happen to have any codes for processing L2S data that you could share?
Cheers
Daniel
Good question, which you are not the first to ask. Last time I worked with that, Marine De Carlo did all the coding, and I just used the 2d spectra she assembled from the 1D “slices”. I’ll check with her and see if we can share this code as is, or if it needs some clean up. Feel free to contact her directly. Since I’m expecting to get the new version of L2S soon (with a better MTF) I’m actually interested in getting this to work.
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