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.

• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Data link
• Metadata link
• Metadata link
• Metadata link
• Metadata link
• SPOT5_BEAVER_LOEWE_FEATURES

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

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

• Data link
• Data link
• Data link
• Data link
• Data link
• undefined
• undefined
• Metadata link
• bunger_hills_spot5_dem_gis

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

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.

• Data link

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

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.

• undefined
• undefined

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

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.

• undefined
• undefined

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