Data format: 

Gridded data given in columns as below:

Longitude
Latitude
Height (always 0)
Sea level anomaly (SLA)
SLA error
Data origin (mission).

The time in the filename denotes the beginning of the data. Files contain weekly means from August 1991 to April 2017. 

The dataset has been obtained using satellite altimetry data from four missions:
ERS1 (weeks 0 - 217)
ERS2 (weeks 218 - 573)
Envisat (weeks 574 - 1020)
CryoSat-2 (weeks 1021 - 1336)

Spatial coverage: 65S-82S with a resolution of 0.25*0.5 degrees (lat: -82:0.25:-65 and lon: -180:0.5:180)

The data have been masked using sea ice concentrations downloaded from osisaf.met.no/p/ice.
Data points retrieved over land have been removed from files ending with “ocean”.

-------------------------------------------------
This product is a part of the Sea Level CCI project and was achieved through a collaboration between DTU and TUM. 

For more information about the data, please contact:

marcello.passaro@tum.de		Marcello Passaro 
oa@space.dtu.dk      		Ole B. Andersen
stine@space.dtu.dk  			Stine K. Rose
hvil@space.dtu.dk    			Heidi Villadsen
--------------------------------------------------