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Multi-Mission Sea Surface Height Climate Data Record

June 16, 2011

NOTICE: This dataset has been superseded. For the latest information on this data series please visit http://podaac.jpl.nasa.gov/Integrated_Multi-Mission_Ocean_AltimeterData.

 

The MEaSUREs Integrated Multi-Mission Ocean Altimeter Data for Climate Research v1.0 sea surface height (SSH) anomaly dataset is comprised of TOPEX/Poseidon (T/P), Jason-1, and OSTM/Jason-2 altimeter data integrated to form a single Sea Surface Height (SSH) Climate Data Record (CDR), merged into a single mean reference orbit.

The application of improved GSFC (STD1007) replacement orbits tie the multiple missions to a common well-defined geodetic reference frame (ITRF2008) providing the geodetic consistency requirement necessary for the demanding application of global and regional mean sea level determination.

Figure Caption: This plot shows the global SSH change through time with a trend superimposed on it, showing a global sea level rise of 3.1 mm/yr. The map has the regional sea level rise averaged over the time length of the dataset.
Plot shows the global SSH change through time with a trend superimposed on it, showing a global sea level rise of 3.2 mm/yr.  The map has the regional sea level rise averaged over the time length of the dataset.

Altimeter data from the multi-mission Geophysical Data Records (GDRs) are interpolated to a common reference orbit facilitating direct time series analysis of the geo-referenced SSH.  The baseline v1.0 file is comprised of 660 10-day repeat cycles spanning from September 1992 to August 2010. As future OSTM cycles become available and are fully validated the direct access structure of the file allows new data to be appended.  All inter-mission biases have been applied to provide a seamless transition throughout the current 18+ year record.
Each SSH data record is a SSH time series at a specific geo-referenced location defined by revolution number and along-track index.  A 3-dimensional directory (rev#, index, cycle) permits direct access of individual locations at specific times (i.e. temporal and spatial sub-sampling). Auxiliary files provide time, mean sea surface reference, terrain type, bathymetry, proximity to coast, and SSH quality assessments (flag word) at each geo-referenced location.

 

The data are available in NetCDF format by individual cycles or the entire time series in a single file.

The entire time series file is located at:

Dataset Information page: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_ALL

Data Access (FTP):  ftp://podaac-ftp.jpl.nasa.gov/allData/merged_alt/preview/L2/TP_J1_OSTM/all

The individual cycles are located at:

Dataset Information page: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_CYCLES

Data Access (FTP): ftp://podaac-ftp.jpl.nasa.gov/allData/merged_alt/preview/L2/TP_J1_OSTM/cycles

The Global Mean Sea Level produced from these data are located at:

Dataset Information page: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_GMSL_ASCII

Data Access (FTP): ftp://podaac.jpl.nasa.gov/allData/merged_alt/preview/global_mean_sea_level/GMSL_TPJAOS_199209_201206.txt

Documentation can be found at: ftp://podaac-ftp.jpl.nasa.gov/allData/merged_alt/preview/L2/docs
and read software at:  ftp://podaac-ftp.jpl.nasa.gov/allData/merged_alt/preview/L2/docs