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  • CEOS Cal Val Test Site - Mauritania 2 - Pseudo-Invariant Calibration Site (PICS)

    https://cmr.earthdata.nasa.gov/search/concepts/C1220566953-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): Mauritania 2 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: 18.92 -10.42 22.67 -7.52

    USGS_LTA Short Name: CEOS_CalVal_Test_Sites-Mauritania2 Version ID: Not provided Unique ID: C1220566953-USGS_LTA

  • CEOS Cal Val Test Site - Negev, Southern Israel - Instrumented Site

    https://cmr.earthdata.nasa.gov/search/concepts/C1220567024-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: Negev, Southern Israel 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: 30 35 30.2 35.1

    USGS_LTA Short Name: CEOS_CalVal_Test_Site-Negev-Southern_Israel Version ID: Not provided Unique ID: C1220567024-USGS_LTA

  • CEOS Cal Val Test Site - Tuz Golu, Turkey - Instrumented Site

    https://cmr.earthdata.nasa.gov/search/concepts/C1220567092-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: Tuz Golu, Turkey 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: 37.69 30.69 40 35.79

    USGS_LTA Short Name: CEOS_CalVal_Test_Site-Tuz_Golu-Turkey Version ID: Not provided Unique ID: C1220567092-USGS_LTA

  • NOAA Polar Orbiting Satellite (POES) Global Visible and Infrared Band Data from ESSA (1966 - 1972) and NOAA (1972 - 1978) Satellites

    https://cmr.earthdata.nasa.gov/search/concepts/C2107094514-NOAA_NCEI.xml
    Description:

    The NOAA Polar Orbiting Satellite (POES) Global Visible and Infrared Band Data from ESSA (1966 - 1972) and NOAA (1972 - 1978) Satellites data set, provided in NetCDF format, was created by scanning satellite images held in the NCEI Physical Archives. Data were scanned from either 35 mm film or paper photographs, then converted to NetCDF format with navigation information to improve accessibility and use in modern satellite applications. Data are mapped to a polar stereographic grid with a grid cell size of approximately 10 km. Visible and infrared data are available for both southern and northern hemispheres within this data collection but may not be available for all dates. Each scanned image's NetCDF file includes the raw scanned data, in addition to the processed imagery that has undergone pseudo-calibration and has been navigated to include location information. The original scans are archived via a separate Submission Agreement. Most of the scanning and all of the navigation and processing was done at the National Snow and Ice Data Center (NSIDC). The NOAA team at NSIDC maintains the User’s Guide documentation for this data set, and provides a link so that users who search NSIDC’s site will find the data set. The data are archived at and distributed by NCEI. The ESSA satellites (ESSA-3, -5, -7, -9) were in operation from December 1966 through November 1972. They were equipped with the Advanced Vidicon Camera System (AVCS). In addition, ITOS-1 and NOAA-1 were equipped with the AVCS and were operational from January 1970 to August 1971. Only visible images are available during this time period. Quality varies throughout the 1960s time period. From October 1972 through March 1978, data from the NOAA satellites (NOAA-2, -3, -4, -5) were acquired. They were equipped with a Scanning Radiometer (SR) with both visible and infrared (IR) bands, so IR observations are available for this time period as well as visible. These were organized as cross-track scan lines.

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

    NOAA_NCEI Short Name: doi:10.7289/V5QV3JV6 Version ID: Not Applicable Unique ID: C2107094514-NOAA_NCEI

  • NOAA Polar-Orbiting Operational Environmental Satellites (POES) Global Visible and Infrared Band Data from ESSA (1966 - 1972) and NOAA (1972 - 1978) Satellites, Version 1

    https://cmr.earthdata.nasa.gov/search/concepts/C1646133015-NSIDCV0.xml
    Description:

    This data set consists of daily visible-band (VIS) imagery and infrared-band (IR) imagery derived from the Environmental Sciences Service Administration (ESSA) satellites, the Improved TIROS Operational System 1 (ITOS 1) satellite, and the the National Oceanic and Atmospheric Administration (NOAA) satellites covering December 1966 through March 1978 (IR data begins in December 1972). The data set was created by scanning the analog imagery from these satellites held in the NOAA National Centers for Environmental Information (NCEI) physical archives in Asheville, NC. Images on 35 mm film, glossy prints, or paper halftone prints were scanned, processed, and then converted to NetCDF format.

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

    NSIDCV0 Short Name: G10022 Version ID: 1 Unique ID: C1646133015-NSIDCV0