OpenSearch

Using the NASA EOSDIS Common Metadata Repository

Collection Search

  • Beaver Lake and Loewe Massif Features Mapped from SPOT 5 Imagery.

    https://cmr.earthdata.nasa.gov/search/concepts/C1214313824-AU_AADC.xml
    Description:

    Beaver Lake and Loewe Massif Features Mapped from SPOT 5 Imagery. The purpose of this Australian Antarctic Data Centre project was to map features on and around Beaver Lake and the Loewe Massif using a rectified SPOT 5 satellite image. The image was captured on 11 January 2004. The features mapped were to be provided as a series of ArcInfo Coverages in Geographicals, conforming to the Feature Catalogue. Further information is provided in a downloadable report at the URL given below. A thumbnail of the image (ID number 167) is available via the Australian Antarctic Data Centre's Satellite Image Catalogue at the URL given below.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -71.01 66.6 -70.29 68.82

    AU_AADC Short Name: SPOT5_BEAVER_LOEWE_FEATURES Version ID: 1 Unique ID: C1214313824-AU_AADC

  • Bunger Hills contours

    https://cmr.earthdata.nasa.gov/search/concepts/C1380160706-AU_AADC.xml
    Description:

    Fifty metre interval contours were derived for cartographic purposes from a Digital Elevation Model (DEM) of the Bunger Hills created using SPOT 5 HRS satellite imagery acquired 17 January 2007. The DEM is described by the metadata record 'Bunger Hills SPOT5 DEM (Digital Elevation Model)' with Entry ID bunger_hills_spot5_dem_gis. The DEM was referenced to Mean Sea Level using Earth Gravitational Model 1996 (EGM96). Estimated accuracies of the DEM (confidence level 90%): planimetric - 15 to 30 metres vertical - 10 metres to 20 metres for slope less than or equal to 20 per cent The DEM should be viewed before using the contours as it has some No Data areas. The contours were created in ArcGIS 10.3 using the following procedure: 1 The DEM was resampled using the Resample tool to a cell size of 50 metres using the bilinear technique; 2 The DEM resulting from step 1 was used as an input to the Focal Statistics tool which was used to calculate, for each cell, the mean elevation of a three cell by three cell square neighbourhood; 3 The Contour tool was used to create 50 metre interval contours from the DEM resulting from step 2; 4 The contours resulting from step 3 were smoothed using the Smooth Line tool with the Paek algorithm and a smoothing tolerance of 50 metres; 5 The contours resulting from step 4 were converted to single part features using the Multipart to Singlepart tool; 6 A topology was created for the contours resulting from step 5 and used to identify contours touching and editing was carried out to correct these errors.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -66.426111 100.249722 -65.9075 101.585278

    AU_AADC Short Name: bunger_hills_contours Version ID: Not provided Unique ID: C1380160706-AU_AADC

  • Bunger Hills SPOT5 DEM (Digital Elevation Model)

    https://cmr.earthdata.nasa.gov/search/concepts/C1214308480-AU_AADC.xml
    Description:

    A digital elevation Model (DEM) of the Bunger Hills with a five metre grid interval,and held in UTM Zone 47, WGS 84 horizontal coordinates and EGM 96 elevation datum. Heights are referenced to Ellipsoid EGM96. The DEM was produced by SPOT image and conforms to standard SPOT image specifications. See PDF document SPOT DEM Product Description Version 1.2 January 1, 2005. SPOT DEM accuracies. The DEM accuracy specifications below are valid for a full square degree and solely apply to DEMs generated from HRS imagery and not to DEMs derived from external sources. The SPOT DEM absolute horizontal and vertical accuracies depend on the dimensions of the area of interest or on the availability of Reference3D on this area: Absolute planimetric accuracy: Circular error with respect to WGS84 (confidence level 90%) 15m to 30m Absolute elevation accuracy: Linear error with respect to EGM96 (confidence level 90%) flat or rolling terrain (slope - 20%) 10m to 20m SPOT DEM products may have variable planimetric and elevation performances: Small areas: One to a few HRS stereopairs HRS intrinsic accuracies 30m @90% planimetric accuracies 20m@90% elevation accuracy The absolute planimetric accuracy of 15m can be achieved if excellent-quality ground control points (better than 10m) are used. NOTE: No ground control points were used in the DEM. DEM layer corrections SPOT DEM production systematically includes: Automatic filtering to eliminate correlation artifacts Flattening of non-running water bodies (rivers etc excluded) exceeding 0.5km2

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -66.5167 100 -65.8167 101.85

    AU_AADC Short Name: bunger_hills_spot5_dem_gis Version ID: 1 Unique ID: C1214308480-AU_AADC

  • 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.

    Links: Temporal Extent: Spatial Extent:
    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.

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

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

  • CEOS Cal Val Test Site - Algeria 3 - Pseudo-Invariant Calibration Site (PICS)

    https://cmr.earthdata.nasa.gov/search/concepts/C1220567099-USGS_LTA.xml
    Description:

    On the background of these requirements for sensor calibration, intercalibration and product validation, the subgroup on Calibration and Validation of the Committee on Earth Observing System (CEOS) formulated the following recommendation during the plenary session held in China at the end of 2004, with the goal of setting-up and operating an internet based system to provide sensor data, protocols and guidelines for these purposes: Background: Reference Datasets are required to support the understanding of climate change and quality assure operational services by Earth Observing satellites. The data from different sensors and the resulting synergistic data products require a high level of accuracy that can only be obtained through continuous traceable calibration and validation activities. Requirement: Initiate an activity to document a reference methodology to predict Top of Atmosphere (TOA) radiance for which currently flying and planned wide swath sensors can be intercompared, i.e. define a standard for traceability. Also create and maintain a fully accessible web page containing, on an instrument basis, links to all instrument characteristics needed for intercomparisons as specified above, ideally in a common format. In addition, create and maintain a database (e.g. SADE) of instrument data for specific vicarious calibration sites, including site characteristics, in a common format. Each agency is responsible for providing data for their instruments in this common format. Recommendation : The required activities described above should be supported for an implementation period of two years and a maintenance period over two subsequent years. The CEOS should encourage a member agency to accept the lead role in supporting this activity. CEOS should request all member agencies to support this activity by providing appropriate information and data in a timely manner. Pseudo-Invariant Calibration Sites (PICS): Algeria 3 is one of six CEOS reference Pseudo-Invariant Calibration Sites (PICS) that are CEOS Reference Test Sites. Besides the nominally good site characteristics (temporal stability, uniformity, homogeneity, etc.), these six PICS were selected by also taking into account their heritage and the large number of datasets from multiple instruments that already existed in the EO archives and the long history of characterization performed over these sites. The PICS have high reflectance and are usually made up of sand dunes with climatologically low aerosol loading and practically no vegetation. Consequently, these PICS can be used to evaluate the long-term stability of instrument and facilitate inter-comparison of multiple instruments.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: 29.09 5.22 31.36 10.01

    USGS_LTA Short Name: CEOS_CalVal_Test_Sites-Algeria3 Version ID: Not provided Unique ID: C1220567099-USGS_LTA

  • CEOS Cal Val Test Site - Algeria 5 - Pseudo-Invariant Calibration Site (PICS)

    https://cmr.earthdata.nasa.gov/search/concepts/C1220567104-USGS_LTA.xml
    Description:

    On the background of these requirements for sensor calibration, intercalibration and product validation, the subgroup on Calibration and Validation of the Committee on Earth Observing System (CEOS) formulated the following recommendation during the plenary session held in China at the end of 2004, with the goal of setting-up and operating an internet based system to provide sensor data, protocols and guidelines for these purposes: Background: Reference Datasets are required to support the understanding of climate change and quality assure operational services by Earth Observing satellites. The data from different sensors and the resulting synergistic data products require a high level of accuracy that can only be obtained through continuous traceable calibration and validation activities. Requirement: Initiate an activity to document a reference methodology to predict Top of Atmosphere (TOA) radiance for which currently flying and planned wide swath sensors can be intercompared, i.e. define a standard for traceability. Also create and maintain a fully accessible web page containing, on an instrument basis, links to all instrument characteristics needed for intercomparisons as specified above, ideally in a common format. In addition, create and maintain a database (e.g. SADE) of instrument data for specific vicarious calibration sites, including site characteristics, in a common format. Each agency is responsible for providing data for their instruments in this common format. Recommendation : The required activities described above should be supported for an implementation period of two years and a maintenance period over two subsequent years. The CEOS should encourage a member agency to accept the lead role in supporting this activity. CEOS should request all member agencies to support this activity by providing appropriate information and data in a timely manner. Pseudo-Invariant Calibration Sites (PICS): Algeria 5 is one of six CEOS reference Pseudo-Invariant Calibration Sites (PICS) that are CEOS Reference Test Sites. Besides the nominally good site characteristics (temporal stability, uniformity, homogeneity, etc.), these six PICS were selected by also taking into account their heritage and the large number of datasets from multiple instruments that already existed in the EO archives and the long history of characterization performed over these sites. The PICS have high reflectance and are usually made up of sand dunes with climatologically low aerosol loading and practically no vegetation. Consequently, these PICS can be used to evaluate the long-term stability of instrument and facilitate inter-comparison of multiple instruments.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: 29.24 -1.32 32.79 4.24

    USGS_LTA Short Name: CEOS_CalVal_Test_Sites-Algeria5 Version ID: Not provided Unique ID: C1220567104-USGS_LTA

  • CEOS Cal Val Test Site - Dome C, Antarctica - Instrumented Site

    https://cmr.earthdata.nasa.gov/search/concepts/C1220566821-USGS_LTA.xml
    Description:

    On the background of these requirements for sensor calibration, intercalibration and product validation, the subgroup on Calibration and Validation of the Committee on Earth Observing System (CEOS) formulated the following recommendation during the plenary session held in China at the end of 2004, with the goal of setting-up and operating an internet based system to provide sensor data, protocols and guidelines for these purposes: Background: Reference Datasets are required to support the understanding of climate change and quality assure operational services by Earth Observing satellites. The data from different sensors and the resulting synergistic data products require a high level of accuracy that can only be obtained through continuous traceable calibration and validation activities. Requirement: Initiate an activity to document a reference methodology to predict Top of Atmosphere (TOA) radiance for which currently flying and planned wide swath sensors can be intercompared, i.e. define a standard for traceability. Also create and maintain a fully accessible web page containing, on an instrument basis, links to all instrument characteristics needed for intercomparisons as specified above, ideally in a common format. In addition, create and maintain a database (e.g. SADE) of instrument data for specific vicarious calibration sites, including site characteristics, in a common format. Each agency is responsible for providing data for their instruments in this common format. Recommendation : The required activities described above should be supported for an implementation period of two years and a maintenance period over two subsequent years. The CEOS should encourage a member agency to accept the lead role in supporting this activity. CEOS should request all member agencies to support this activity by providing appropriate information and data in a timely manner. Instrumented Sites: Dome C, Antarctica is one of eight instrumented sites that are CEOS Reference Test Sites. The CEOS instrumented sites are provisionally being called LANDNET. These instrumented sites are primarily used for field campaigns to obtain radiometric gain, and these sites can serve as a focus for international efforts, facilitating traceability and inter-comparison to evaluate biases of in-flight and future instruments in a harmonized manner.  In the longer-term it is anticipated that these sites will all be fully automated and provide surface and atmospheric measurements to the WWW in an autonomous manner reducing some of the cost of a manned campaign, at present three can operate in this manner.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -76.6 123 -74.5 131.18

    USGS_LTA Short Name: CEOS_CalVal_Test_Site-Dome_C-Antarctica Version ID: Not provided Unique ID: C1220566821-USGS_LTA

  • CEOS Cal Val Test Site - Dunhuang, China - Instrumented Site

    https://cmr.earthdata.nasa.gov/search/concepts/C1220566840-USGS_LTA.xml
    Description:

    On the background of these requirements for sensor calibration, intercalibration and product validation, the subgroup on Calibration and Validation of the Committee on Earth Observing System (CEOS) formulated the following recommendation during the plenary session held in China at the end of 2004, with the goal of setting-up and operating an internet based system to provide sensor data, protocols and guidelines for these purposes: Background: Reference Datasets are required to support the understanding of climate change and quality assure operational services by Earth Observing satellites. The data from different sensors and the resulting synergistic data products require a high level of accuracy that can only be obtained through continuous traceable calibration and validation activities. Requirement: Initiate an activity to document a reference methodology to predict Top of Atmosphere (TOA) radiance for which currently flying and planned wide swath sensors can be intercompared, i.e. define a standard for traceability. Also create and maintain a fully accessible web page containing, on an instrument basis, links to all instrument characteristics needed for intercomparisons as specified above, ideally in a common format. In addition, create and maintain a database (e.g. SADE) of instrument data for specific vicarious calibration sites, including site characteristics, in a common format. Each agency is responsible for providing data for their instruments in this common format. Recommendation : The required activities described above should be supported for an implementation period of two years and a maintenance period over two subsequent years. The CEOS should encourage a member agency to accept the lead role in supporting this activity. CEOS should request all member agencies to support this activity by providing appropriate information and data in a timely manner. Instrumented Sites: Dunhuang, China, is one of eight instrumented sites that are CEOS Reference Test Sites. The CEOS instrumented sites are provisionally being called LANDNET. These instrumented sites are primarily used for field campaigns to obtain radiometric gain, and these sites can serve as a focus for international efforts, facilitating traceability and inter-comparison to evaluate biases of in-flight and future instruments in a harmonized manner.  In the longer-term it is anticipated that these sites will all be fully automated and provide surface and atmospheric measurements to the WWW in an autonomous manner reducing some of the cost of a manned campaign, at present three can operate in this manner.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: 39 91.98 41.45 96.52

    USGS_LTA Short Name: CEOS_CalVal_Test_Site-Dunhuang-China Version ID: Not provided Unique ID: C1220566840-USGS_LTA