Fundamental Data Records for Altimetry [ALT_FDR___] 1991-09
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keyword: DIF10
keyword: EARTH SCIENCE>ATMOSPHERE
keyword: EARTH SCIENCE>OCEANS
keyword: EARTH SCIENCE>OCEANS>BATHYMETRY/SEAFLOOR TOPOGRAPHY
keyword: EARTH SCIENCE>OCEANS>MARINE GEOPHYSICS
keyword: EARTH SCIENCE>OCEANS>OCEAN CIRCULATION
keyword: EARTH SCIENCE>OCEANS>OCEAN WAVES
keyword: EARTH SCIENCE>OCEANS>SEA SURFACE TOPOGRAPHY
keyword: EARTH SCIENCE>CRYOSPHERE
keyword: EARTH SCIENCE>CRYOSPHERE>SNOW/ICE
keyword: ERS-1
keyword: ERS-2
keyword: ENVISAT
keyword: RA
keyword: MWR
keyword: RA-2
keyword: Orthoimagery
keyword: Atmosphere
keyword: Oceans
keyword: Bathymetry and Seafloor Topography
keyword: Marine Geophysics
keyword: Ocean Circulation
keyword: Ocean Waves
keyword: Sea Surface Topography
keyword: Cryosphere
keyword: Snow and Ice
keyword: Sun-synchronous
keyword: 800 km
keyword: 5 - 1150 km
keyword: Radar Altimeters
keyword: Imaging Spectrometers/Radiometers
keyword: PUBLIC
keyword: ESA_open_and_free
keyword: Envisat
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description: This dataset is a Fundamental Data Record (FDR) resulting from the _$$ESA FDR4ALT project$$ https://www.fdr4alt.org/ . The Fundamental Data Record for Altimetry V1 products contain Level 0 and Level 1 altimeter-related parameters including calibrated radar waveforms and supplementary instrumental parameters describing the altimeter operating status and configuration through the satellite lifetime. The data record consists of data for the ERS-1, ERS-2 and Envisat missions for the period ranging from 1991 to 2012, and bases on the Level 1 data obtained from previous ERS REAPER and ENVISAT V3.0 reprocessing efforts incorporating new algorithms, flags, and corrections to enhance the accuracy and reliability of the data. For many aspects, the Altimetry FDR product has improved compared to the existing individual mission datasets: New neural-network waveform classification, surface type classification, distance to shoreline and surface flag based on GSHHG Instrumental calibration information directly available in the product Improved Orbit solutions Correction of REAPER drawbacks (i.e., time jumps and negative waveforms) The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used. Information for expert altimetry users is also available in a dedicated NetCDF group within the products. Please consult the _$$FDR4ALT Product User Guide$$ https://earth.esa.int/eogateway/documents/d/earth-online/fdr4alt-products-user-guide before using the data. The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.
temporal: PeriodOfTime
last: https://fedeo.ceos.org/series/eo:organisationName/ESA@ESRIN/FDRforAltimetry/1991/09

PeriodOfTime
start date: 1991-09-01T00:00:00.000Z
end date: 1991-09-30T23:59:59.999Z