This folder includes marine gravity grids derived from SARAL, Jason-1 and CryoSat-2
geodetic mission data in the Aegean Sea.

Boundaries [degree]:
lon: 22 -- 28
lat: 35 -- 41

SARAL (SA) and Jason-1 (J1) data only available from RADS database.
CryoSat-2 operates in the SAR mode til the end of 2015 in Aegean Sea.
CryoSat-2 data from cyle 137 til 174 (correspond to year 2013 to 2015) is also extracted from RADS, 
where the SAR mode data was processed with RDSAR technique.
 
SAR mode data for year 2013, 2014 and 2015 is extratced from LARS and GPOD database.
SIN mode data for year 2016, 2017 and 2018 is extratced from LARS and GPOD database as well.

CryoSat-2 data is merged with SA+J1 data.
Hence, we have 6 different datasets to make gravity grids for the region. 

In the following, the gravity grids are listed with the information of which altimetry
dataset were used for deriving the grids:

*_RADS.gra     # SA+J1+RADS(C2) ---- all data come from RADS 
*_RADS2.gra    # SA+J1 only

*_SAR.gra      # SA+J1+LARS(SAR)
*_SAR2.gra     # SA+J1+GPOD(SAR)
 
*_SARin.gra    # SA+J1+LARS(SIN)
*_SARin2.gra   # SA+J1+GPOD(SIN)