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Using the NASA EOSDIS Common Metadata Repository

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  • ADT - Absolute Dynamic Topography

    https://cmr.earthdata.nasa.gov/search/concepts/C1214586177-SCIOPS.xml
    Description:

    Contents: along-track sea surface heights above geoid; dynamic topography is the sum of sea level anomaly (SLA) and mean dynamic topography (MDT, Rio05 here) Use: study of the general circulation (ocean gyres ...) The data are global mono altimeter satellite products, homogeneous with other satellites, available in near-real time and in delayed time in NetCDF format. In delayed time, two types of products are available: - "Ref" (Reference) series: homogeneous datasets based on two satellites (Topex/Poseidon, Jason-1 + ERS, Envisat) with the same groundtrack. Sampling is stable in time. - "Upd" (Updated) series: up-to-date datasets with up to four satellites at a given time (adding GFO and/or Topex/Poseidon on its new orbit). Sampling and Long Wavelength Errors determination are improved, but quality of the series is not homogeneous. Regional products with an improved quality are available in local areas ("http://www.aviso.oceanobs.com/html/donnees/produits/hauteurs/regional/")

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    Minimum Bounding Rectangle: -90 -180 90 180

    SCIOPS Short Name: AVISO_ADT Version ID: Not provided Unique ID: C1214586177-SCIOPS

  • AVISO Level 4 Absolute Dynamic Topography for Climate Model Comparison

    https://cmr.earthdata.nasa.gov/search/concepts/C1652971731-PODAAC.xml
    Description:

    This dataset contains absolute dynamic topography (similar to sea level but with respect to the geoid) binned and averaged monthly on 1 degree grids. The coverage is from October 1992 to December 2010. These data were provided by AVISO (French space agency data provider) to support the CMIP5 (Coupled Model Intercomparison Project Phase 5) under the World Climate Research Program (WCRP) and was first made available via the JPL Earth System Grid. The dynamic topography are derived from sea surface height measured by several satellites including Envisat, TOPEX/Poseidon, Jason-1 and OSTM/Jason-2, and referenced to the geoid. Along with this dataset, two additional ancillary data files are included in the same directory which contain the number of observations and standard error co-located on the same 1 degree grids.

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    Minimum Bounding Rectangle: -90 -180 90 180

    PODAAC Short Name: AVISO_L4_DYN_TOPO_1DEG_1MO Version ID: 1 Unique ID: C1652971731-PODAAC

  • CDDIS_DORIS_data_cycle

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000000-CDDIS.xml
    Description:

    The Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed by the Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies. The system was developed to provide precise orbit determination and high accuracy location of ground beacons for point positioning. DORIS is a dual-frequency Doppler system that has been included as an experiment on various space missions such as TOPEX/Poseidon, SPOT-2, -3, -4, and -5, Envisat, and Jason satellites. Unlike many other navigation systems, DORIS is based on an uplink device. The receivers are on board the satellite with the transmitters are on the ground. This creates a centralized system in which the complete set of observations is downloaded by the satellite to the ground center, from where they are distributed after editing and processing. An accurate measurment is made of the Doppler shift on radiofrequency signals emitted by the ground beacons and received on the spacecraft.

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_DORIS_data_cycle Version ID: 1 Unique ID: C1000000000-CDDIS

  • CDDIS_DORIS_products_positions

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000020-CDDIS.xml
    Description:

    Station position and velocity solutions (weekly and cumulative) in Software INdependent EXchange (SINEX) format derived from analysis of Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) data. The solutions include daily values of Earth Orientation Parameters (EOPs). These products are the generated by analysis centers in support of the International DORIS Service (IDS). Time series of station coordinate solutions in Station Coordinate Difference (STCD) are also generated by the IDS analysis centers. Weekly solutions represent the IDS contribution to the International Terrestrial Reference Frame (ITRF) determination.

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_DORIS_products_positions Version ID: 1 Unique ID: C1000000020-CDDIS

  • CDDIS_DORIS_products_quaternions

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000005-CDDIS.xml
    Description:

    Satellite attitude information from satellites with Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) receivers. Files include attitude quaternions for the body of the spacecraft and solar panel angular positions.

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_DORIS_products_quaternions Version ID: 1 Unique ID: C1000000005-CDDIS

  • CDDIS_DORIS_products_stcd

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000080-CDDIS.xml
    Description:

    Station position time series solutions in DORIS Station Coordinate Difference (STCD) format derived from analysis of Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) data. These products are the generated by analysis centers in support of the International DORIS Service (IDS).

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_DORIS_products_stcd Version ID: 1 Unique ID: C1000000080-CDDIS

  • CDDIS_GNSS_satellite_data

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000024-CDDIS.xml
    Description:

    Global Navigation Satellite System (GNSS) data consists of the U.S. Global Positioning System (GPS) and the Russian GLObal NAvigation Satellite System (GLONASS) (plus other international systems) data sets. The Global Positioning System, developed by the U.S. Department of Defense, has been fully operational since 1994. GPS consists of a constellation of 24 satellites and three active spares each traveling in a 12 hour circular orbit, 20,200 kilometers above the Earth. The satellites are positioned so that six are observable nearly 100 percent of the time from any point on the Earth. The GLObal NAvigation Satellite System (GLONASS), managed and deployed by the Russian Federation, is similar to the U. S. Global Positioning System (GPS) in terms of the satellite constellation, orbits, and signal structure. GNSS receivers detect, decode, and process signals from the GNSS satellites. The satellites transmit the ranging codes on two radio-frequency carriers, allowing the locations of GNSS r

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_GNSS_satellite_data Version ID: 1 Unique ID: C1000000024-CDDIS

  • CDDIS_SLR_data

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000041-CDDIS.xml
    Description:

    In Satellite Laser Ranging (SLR), a short pulse of coherent light generated by a laser (Light Amplification by Stimulated Emission of Radiation) is transmitted in a narrow beam to illuminate corner cube retroreflectors on the satellite. The return signal, typically a few photons, is collected by a telescope and the time-of-flight is measured. Using information about the satellite's orbit, the time-of-flight, and the speed of light, the location of the ranging station can be determined. Similar data acquired by another station, many kilometers distant from the first, or on a different continent, can be used to determine the distance between stations to precisions of centimeters or better. Repetitive measurements over months and years yield the change in distance, or the motion of the Earth's crust.

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_SLR_data Version ID: 1 Unique ID: C1000000041-CDDIS

  • CDDIS_SLR_predictions

    https://cmr.earthdata.nasa.gov/search/concepts/C1000000025-CDDIS.xml
    Description:

    Predicted satellite orbits for Satellite Laser Ranging (SLR) tracking of satellites equipped with corner cube retroreflectors. SLR stations download these prediction files and coordinate tracking schedules for satellite acquisition. The predicted orbit files typically contain orbit information for multiple days and are issued on a daily or sub-daily basis.

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    Minimum Bounding Rectangle: -90 -180 90 180

    CDDIS Short Name: CDDIS_SLR_predictions Version ID: 1 Unique ID: C1000000025-CDDIS

  • Global Mean Sea Level

    https://cmr.earthdata.nasa.gov/search/concepts/C1214603323-SCIOPS.xml
    Description:

    The reconstruction has used monthly-mean tide gauge data from the Permanent Service for Mean Sea Level (PSMSL) database [Woodworth and Player, 2003], together with Empirical Orthogonal Functions (EOFs) from a 12-year TOPEX/Poseidon + Jason-1 satellite altimeter data set to 'reconstruct' a GMSL curve from January 1870 to December 2001.

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    Minimum Bounding Rectangle: -90 -180 -60.5033 180

    SCIOPS Short Name: geodata_1933 Version ID: Not provided Unique ID: C1214603323-SCIOPS