GFO is a radar altimeter used to measure ocean wave heights and currents. This data set covers the period from 07-Jan-2000 to 02-Jun-2008. The data set comprising near global (72S - 72N) sea surface height anomalies, the along ground tracks are repeated every 17 days and are the same the same ground track as GEOSAT. The data has been processed at CSIRO Marine Research in Hobart to a uniform grid spacing and format, there is one file for each satellite pass and the data files are in a simple binary format.. It is available on-line on the CSIRO Marine Research network; also available to outside users on request.
Envisat was launched in March 2002,by the European Space Agency, it is an advanced polar-orbiting Earth observation satellite which provides measurements of the atmosphere, ocean, land, and ice. This dataset comprises near global (81S - 81N) along ground tracks which are repeated every 35 days, covering the same track as the ERS-1 and ERS-2 satellites. The dataset period covered is June 2003 to January 2008. The data was provided by ESA in France and has been reformatted at CSIRO Marine Research in Hobart to a uniform grid spacing and format. Available on-line on the CSIRO Marine Research network; also available to outside users on request.