Figures marked "CSIRO", are copyright CSIRO, but please feel free to use them, conditional on the figures not being altered, and their source being acknowledged, and with a link to this site where possible.

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Sea level data

Our satellite altimeter data holdings

Summary of our current holdings of satellite altimeter data

More details:

1. "Along-track" data sets

These data sets are organised in the following way:

  • one file for each satellite pass
  • a time series of heights at a number of latitude grid points
  • spacing of the latitude grid points is similar to that in the raw data supplied to us (e.g. .05° for TOPEX/Poseidon)
  • data files are in a simple binary format. There are a number of programs around for reading these data files.

Mission

Start and end dates

Cycle length (days)

 Location on disk

GEOSAT

08-Nov-1986 → 05-Oct-1989

17

 /home/altdata/geosat/a

GFO

07-Jan-2000 → 13-Sep-2008

17

 /home/altdata/gfo/a

TOPEX/Poseidon

23-Sep-1992 → 15-Aug-2002

10

 /home/altdata/topex/b

TOPEX/Poseidon (Reprocessed)

23-Sep-1992 → 15-Aug-2002

10

 /home/altdata/topex/c

TOPEX/Poseidon
Tandem Mission

20-Sep-2002 → 08-Oct-2005

10

 /home/altdata/topex_tandem

Jason-1

15-Jan-2002 → 03-May-2008

10

 /home/altdata/jason/a

Jason-2/OSTM

12-Jul-2008 → 21-Sep-2009

10

 .../along-track/Jason-2/a

ERS-1 phase C

06-Oct-1992 → 23-Dec-1993

35

 /home/altdata/ers1/b

ERS-1 phase G

24-Mar-1995 → 02-Jun-1996

35

 /home/altdata/ers1/b

ERS-2 phase A

15-May-1995 → 07-Jul-2003

35

 /home/altdata/ers2/cor &
 /home/altdata/ers2/raw

Envisat

02-Jun-2003 → 17-Feb-2009

35

 /home/altdata/envisat/upd
  • GEOSAT and GFO are on the same ground track.
  • TOPEX/Poseidon (up to August 2002) and Jason-1 are on the same ground track.
  • The reprocessed TOPEX/Poseidon data set has a number of improvements. For most users the most significant change is probably the improved tide model that has been used.
  • ERS-1 phases C & G, ERS-2 and Envisat are on the same ground track.
  • Locations starting ".../along-track" are actually
    "/home/datalib/observations/rs/altimetry/along-track/..."

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2. Gridded data sets

These data sets are organised in the following way:

  • one netCDF file for the whole dataset
  • data has been mapped and gridded to the specified grid

Data set

Grid spacing

Spatial range

Time range

 Data file name*

Australian region

0.33° Mercator grid

82°S → 15°N
80°E → 180°E

14-Oct-1992 →18-Feb-2009

 tp_ers_msla_aus.nc

Global

1° Mercator grid

82°S → 82°N
0°E → 360°E

14-Oct-1992 →18-Feb-2009

 tp_ers_msla_global.nc

These data files are in /home/altdata/com_alt/tp-ers-msla.

Contact Neil White for further information about these data sets.

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Website owner: Neil White | Last modified 6/11/09


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