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Jason-2/3 Final Geophysical Data Record (GDR) and Interim Geophysical Data Record(IGDR) Data Quality Monitoring

The data quality monitoring (DQM) system developed by the satellite oceanography team at NCEI is based on the concept of a Rich Inventory developed by the Enterprise Data Systems Group at the National Geophysical Data Center (NGDC). The principle concept of a Rich Inventory is to calculate statistics for selected parameters as files are received and ingested into the archive, store them in a database, and make them available to users and managers of the archive. A "granule" is the smallest data unit over which statistics are calculated - in this case, one pass (half-orbit) of the Jason satellites. Thus, the DQM produces 254 statistical estimates per cycle, one for each pass.

Below are some representative statistics calculated from the selected parameters in a granule as it is ingested into NCEI's archive. Parameters we monitor include sea surface height anomaly, Ku-band significant wave height, altimeter wind speed, the difference between altimeter and radiometer wind speeds, the radiometer water vapor content, and the difference between the the radiometer and model wet tropospheric corrections.

Jason-3 GDR Granule Statistics

IGDR
(click for a larger view)

Jason-3 IGDR Granule Statistics

GDR
(click for a larger view)

Statistics for other Jason-3 parameters:

  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Latest Jason-3 GDR Sea Surface Height Anomaly
(0.25x0.25 lon/lat degree)

GDR
(click for a larger view)

Latest Jason-3 IGDR Sea Surface Height Anomaly
(0.25x0.25 lon/lat degree)

IGDR
(click for a larger view)

Other Jason-3 parameters (0.25x0.25 lon/lat degree):

  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Latest Jason-3 GDR Sea Surface Height Anomaly
(3.0x1.0 lon/lat degree)

GDR
(click for a larger view)

Latest Jason-3 IGDR Sea Surface Height Anomaly
(3.0x1.0 lon/lat degree)

IGDR
(click for a larger view)

Other Jason-3 parameters (3.0x1.0 lon/lat degree):

  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Jason-2 GDR Granule Statistics

GDR
(click for a larger view)

Jason-2 IGDR Granule Statistics

IGDR
(click for a larger view)

Statistics for other Jason-2 parameters:

  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Latest Jason-2 GDR Sea Surface Height Anomaly
(3.0x1.0 lon/lat degree)

GDR
(click for a larger view)

Latest Jason-2 IGDR Sea Surface Height Anomaly
(0.25x0.25 lon/lat degree)

IGDR
(click for a larger view)

Other Jason-2 parameters (3.0x1.0 lon/lat degree):

  • Sea surface height anomaly: GDR IGDR
  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Other Jason-2 parameters (0.25x0.25 lon/lat degree):

  • Sea surface height anomaly: GDR IGDR
  • Significant wave height (Ku Band): GDR IGDR
  • Altimeter wind speed: GDR IGDR
  • Difference between radiometer wet tropospheric and model correction: GDR IGDR
  • Difference between altimeter and radiometer wind speed: GDR IGDR
  • Radiometer water vapor content: GDR IGDR

Quality Monitoring News

SOG NetCDF NOAA CLASS AVHRR SST GODAE MPMC GAC RSMAS GHRSST MCSST NLSST SeaWiFS
GOSTA NPOESS VIIRS OPeNDAP DODS LAS HRPT LAC GAC HDF-SDS DMAC PO.DAAC LTSRF CoRTAD

  Last modified:    Thu, 28-Sep-2017 19:37 UTC NCEI.info@noaa.gov
 
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