Description:

An ESRI formatted triangular irregular network (TIN) of the Antarctic continental terrain, derived from ERS radar altimeter data. The data is in a Polar Stereographic projection with true scale at 71 degrees South. The TIN is unreliable in latitudes south of 82 degrees South and steep areas of the continent, particularly along the coast. ESA's two European Remote Sensing (ERS) satellites, ERS-1 and 2, were launched into the same orbit in 1991 and 1995 respectively. Their payloads included a synthetic aperture imaging radar, radar altimeter and instruments to measure ocean surface temperature and wind fields. ERS-2 added an additional sensor for atmospheric ozone monitoring. The two satellites acquired a combined data set extending over two decades. The ERS-1 mission ended on 10 March 2000 and ERS-2 was retired on 05 September 2011.

Links:

• Metadata link
• Data link
• ERS_DTM_TIN_ANT

Temporal Extent:

Start: 2003-01-01T00:00:00.000Z

End: 2003-01-31T23:59:59.999Z

Spatial Extent:

Minimum Bounding Rectangle: -82 -180 -65 180

AU_AADC Short Name: ERS_DTM_TIN_ANT Version ID: 1 Unique ID: C1214308549-AU_AADC

Description:

This map shows the distribution of the iceberg data extracted from ERS SAR images. Icebergs are identified in Synthetic Aperture Radar [SAR] images by image analysis using the texture and intensity of the microwave backscatter observations. The images are segmented using an edge detecting algorithm, and segments identified as iceberg or background, which may be sea ice, open water, or a mixture of both. Dimensions of the icebergs are derived by spatial analysis of the corresponding image segments. Location of the iceberg is derived from its position within the image and the navigation data that gives the location and orientation of the image. More than 20,000 individual observations have been extracted from SAR images acquired by the European Space Agency's ERS-1 and 2 satellites and the Canadian Space Agency's Radarsat satellite. Because images can overlap, some proportion of the observations represent multiple observations of the same set of icebergs. Most observations relate to the sector between longitudes 70E and 135E. The data set includes observations from several other discrete areas around the Antarctic coast. In general observations are within 200 km of the coast but in limited areas extend to about 500 km from the coast. This metadata record has been derived from work performed under the auspices of ASAC project 2187 (ASAC_2187). The map in the pdf file shows the extent of the coverage of individual SAR scenes used in the analysis and the abundance and size characteristics (by a limited colour palette) of the identified icebergs.

Links:

• Data link
• undefined
• Metadata link
• AAD_Ant_iceberg_SAR

Temporal Extent:

Start: 1991-09-01T00:00:00.000Z

End: 1991-09-01T23:59:59.999Z

Spatial Extent:

Minimum Bounding Rectangle: -80 70 -55 135

AU_AADC Short Name: AAD_Ant_iceberg_SAR Version ID: 1 Unique ID: C1214311458-AU_AADC

Description:

The BOREAS DSP-4 team acquired and analyzed imaging radar data from the ESA's ERS-1 over a complete annual cycle at the BOREAS sites in Canada in 1994 to detect shifts in radar backscatter related to varying environmental conditions. Two independent transitions correlating with snow melt and soil thaw onset, and possible canopy thaw were revealed by the data.

Links:

• Data link
• Metadata link
• undefined
• Metadata link
• Metadata link
• Browse image link

Temporal Extent:

Start: 1994-02-14T00:00:00.000Z

End: 1994-12-14T23:59:59.000Z

Spatial Extent:

Minimum Bounding Rectangle: 48 -111 60 -90

ORNL_CLOUD Short Name: BFO_dsp04_ers_freeze-thaw_maps_590 Version ID: 1 Unique ID: C2956500512-ORNL_CLOUD

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Description:

Under an ESA contract TSS receives global ATSR data from the ERS-1 satellite. This is a demonstration project where data is processed in Tromso and the products are distributed directly to the end user. The UK Met. Office is one of the users having received ATSR data products from TSS. This near real-time service is set up using Internet for transmission of the products. The operational service aquires an average of 10 ERS-1 passes a day, every day throughout the year. Through this near real-time demonstration project, the TSS infrastructure has proven to be very well suited for supporting an operational service with useful and necessary information. A full resolution ATSR data product chain has also been implemented very recently. TSS can now offer in near-real time full resolution (1 km) brightness and sea surface temperature products. The coverage is global for the ATSR, and for the AVHRR the coverage is that of TSS (i.e. Europe).

Links:

• BT_images

Temporal Extent:

Start: 1970-01-01T00:00:00.000Z

Spatial Extent:

Minimum Bounding Rectangle: 50 -55 90 110

SCIOPS Short Name: BT_images Version ID: Not provided Unique ID: C1214607945-SCIOPS

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.

Links:

• Data link

Temporal Extent:

Start: 1998-01-01T00:00:00.000Z

Spatial Extent:

Minimum Bounding Rectangle: -90 -180 90 180

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

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