Geosat Exact Repeat Mission Waveform Data Records (WDR) (NCEI Accession 0061150)
This dataset contains waveform data records (WDRs) from the US Navy Geodetic Satellite (GEOSAT) Exact Repeat Mission (ERM) for the time period of November 08, 1986 through December 30, 1989. Parameters include: time, orbit, latitude/longitude, and sea surface height. Corrections to the data include: sea level, wind and wave data, tides, dry and wet troposphere, ionosphere, height bias, altimeter crossover differences, altimeter sea surface measurement, and spacecraft orientation. These data were submitted by the U.S. Navy via NOAA Office of Research and Applications' Laboratory for Satellite Altimetry (LSA), which was previously National Oceanic Service Satellite Altimeter Group.
The US Navy Geosat radar altimeter mission lasted for nearly 5 years (March 1985 to January 1990) and collected approximately 750 million measurements of sea level, wave height, and wind speed over the global oceans. During the Geodetic Mission (March 1985 to September 1986), the satellite did not repeat its ground track for the duration of the mission. The orbit of the satellite was changed in late 1986 to begin the Exact Repeat Mission (ERM) which lasted from October 1, 1986 until the satellite quit functioning in January 1990. During the ERM, the satellite repeated its ground track every 17 days. Data were initially processed by the Johns Hopkins University Applied Physics Laboratory in Laurel, MD in coordination with the NOAA/NOS Satellite Altimeter Group. Data products were transferred to the NOAA National Oceanographic Data Center (NODC) for distribution. Data products are archived at the NODC.
The US Navy Geosat radar altimeter mission lasted for nearly 5 years (March 1985 to January 1990) and collected approximately 750 million measurements of sea level, wave height, and wind speed over the global oceans. During the Geodetic Mission (March 1985 to September 1986), the satellite did not repeat its ground track for the duration of the mission. The orbit of the satellite was changed in late 1986 to begin the Exact Repeat Mission (ERM) which lasted from October 1, 1986 until the satellite quit functioning in January 1990. During the ERM, the satellite repeated its ground track every 17 days. Data were initially processed by the Johns Hopkins University Applied Physics Laboratory in Laurel, MD in coordination with the NOAA/NOS Satellite Altimeter Group. Data products were transferred to the NOAA National Oceanographic Data Center (NODC) for distribution. Data products are archived at the NODC.
Dataset Citation
- Cite as: Lillibridge, John; NOAA Center for Satellite Applications and Research (2010). Geosat Exact Repeat Mission Waveform Data Records (WDR) (NCEI Accession 0061150). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0061150. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0061150
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 1986-11-08 to 1989-12-30 |
Spatial Bounding Box Coordinates |
West: -180
East: 180
South: -72
North: 72
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Data Format The format description of the ASCII SDR files can be found in " JHU/APL, 1985: GEOSAT-A Data Users / Ground System Interface Control Document (ICD)". JHU/APL, 7292-9510 Rev. 1, Laurel, MD, 122pp. " |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
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Last Modified: 2022-07-02T02:00:14Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov