NASA JPL Physical Oceanography Distributed Active Archive Center

nasa-podaac-jason-1_sgdr_netcdf

Jason-1 Sensor Geophysical Data Record (SGDR) NetCDF

The Sensory Geophysical Data Record (SGDR) files contain full accuracy altimeter data, with a high precision orbit (accuracy ~2.5 cm), provided approximately 35 days after data collection. The instruments on Jason-1 make direct observations of the following quantities: altimeter range, significant wave height, ocean radar backscatter cross-section (a measure of wind speed), ionospheric electron content (derived by a simple formula), tropospheric water content, mean sea surface, and position relative to the GPS satellite constellation. The SGDR contain all relevant corrections needed to calculate the sea surface height. It also contains the 20Hz waveforms that are required for retracking. The SGDR is an expert level product, if you do not require the waveforms then the GDR will be more suited for your needs. The NetCDF format is not the official format from the Jason-1 project and is therefore not validated. If you require validated data please use the binary version.

podaac.jpl.nasa.gov

http://podaac.jpl.nasa.gov/dataset/JASON-1_SGDR_NETCDF

Identified by : JASON-1_SGDR_NETCDF

This dataset was released on June 04, 2009.

The time range for this dataset is January 14, 2002 (12:00 PM) to March 03, 2012 (12:59 PM).

The spatial range for this dataset is -66.15° to 66.15° latitude, and 0° to 360° longitude. map (center)

This dataset uses data from an instance of the poseidon-2 instrument on the jason-1 platform.
This dataset uses data from an instance of the jason-microwave-radiometer instrument on the jason-1 platform.
This dataset uses data from an instance of the blackjack instrument on the jason-1 platform.
This dataset uses data from an instance of the doris-ng instrument on the jason-1 platform.

Also known as :

• dataset JASON-1_SGDR_NETCDF (podaac lexicon)
• datasetId PODAAC-J1SDR-NETC0 (podaac lexicon)