Yeah, that's the one! ftp://podaac-ftp.jpl.nasa.gov/allData/c ... S/envisat/
So, the name of the files inside the cycle folders are like "RA2_MWS_2PRF-P20030701_002528_00003017A017_00403_06970_6849_NOC.nc" (this is a random one, not one of my interest). The filename convention is:
RA2_MWS_2P : the SGDR product identifier
<P> : Processing Stage Flag (may be O-V)
<OID> : ESA code for the originator (F-P)
<yyyymmdd_hhnnss> : date of 1st product record
<dddddddd> : time coverage of the product in seconds
<p> : Mission phase identifier (A)
<ccc> : cycle number within the mission phase
<rrrrr> : Relative orbit number within the cycle at the beginning
of the product
<aaaaa> : Absolute orbit at the beginning of the product
<nnnn> : wrap-around counter to identify sequential products
The relative orbit numbers that I want are 0684 and 0697. They used to be on this FTP, but now they are missing. Inside the cycle folders are files until 0499 or 0500.
Thanks for your response.