There are three different data products shall be produced and distributed to the users:
- Operational Geophysical Data Record (OGDR) produced in near real time,
- Interim Geophysical Data Record (IGDR) produced in 1 to 1.5 days,
- Geophysical Data Record (GDR) produced in 60 days.
The first one is a NRT product. The other two are OFL products
In addition to the native NetCdf format a 1Hz BUFR-formatted dataset from the OGDR family (OGDR-BUFR) for distribution via the World Meteorological Organization (WMO) Global Tele-communication System (GTS) and EUMETCast is also generated.
Netcdf OGDR/IGDR/GDR products will have the same information and format. The only difference will be related to auxiliary data (orbit, meteo files, calibrations, ...).
Taking into account Jason-1/2 heritage, products will be split into several data sets
- One "reduced" file, close to the current Jason-1/2 NRT-SSHA, limited to 1 Hz sampling,
- One "standard" file, close to the current Jason-1/2 I/GDR, containing 1 Hz and 40 Hz values,
- One "expertise" file, close to the current Jason-1/2 SGDR, containing 1 Hz, 40 Hz and waveforms values. This file will not be generated in NRT.
SARAL Level2 Product Definition
The Level-2 products from this mission comprise a family of nine different types of geophysical data records (GDRs). As illustrated in Table 1 below, there are three families of GDRs, distinguished by increasing latency and accuracy, going from the Operational GDR (OGDR), to the Interim GDR (IGDR), to the final GDR. Within each of these three families there are up to three types of files in NetCDF format, with increasing size and complexity:
All products L2A, L2B will be available as standard and NRT products