NERC Data Catalogue Service
Polar Pathfinder Sampler (PPSM): AVHRR Polar Pathfinder 1.25 km data (1978-1996)
The AVHRR Polar Pathfinder 1.25 km data set provides information about polar climate and geophysical processes at the highest practical spatial and temporal resolution. For the first time, daily composites of AVHRR-collected cryospheric variables are compiled at a resolution suitable for regional and local monitoring, and process studies, of changing surface conditions such as sea ice formation, sea ice motion and ice sheet extent. The higher resolution provides the closest link between field data and the greater perspective afforded by a satellite view.
Products include daily sea-ice motion vector fields and twice-daily composited images of albedo, skin surface temperature, and the calibrated and geolocated AVHRR channel data used to generate them. Products are mapped to the NSIDC Equal-Area Scalable Earth-Grid (EASE-Grid, Armstrong and Brodzik 1995). Spatial coverage includes both hemispheres, extending poleward of 50 degrees N and 53 degrees S latitudes. Temporal coverage begins September 1993 and extends through the present (1998). Plans are to continue acquisition and processing for 18 months after the Moderate Resolution Imaging Spectrometer (MODIS) becomes operational.
For this AVHRR Pathfinder demonstration, three regions have been selected from 1997 Northern Hemisphere composites to correspond to areas of active field programs and ongoing research. These areas, the Surface Heat Budget of the Arctic Ocean (SHEBA) study region in the Beaufort Sea, the ETH/CU Camp in western Greenland, and Point Barrow, Alaska, cover the main polar surface types: sea ice cover, permanent ice sheets, and polar lands. Time-series visualizations are provided rather than a sample of the data product, to conserve space on the CD-ROM.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2007-02-06T02:44:04
- Dataset Reference Date ()
- 2007-02-06T02:44:04
- Identifier
- NCAS British Atmospheric Data Centre (NCAS BADC) / b2f21e4972c90504ed837367b06acc91
- Maintenance and update frequency
- notPlanned
- Update scope
- dataset
- Keywords
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- PPSM
- GEMET - INSPIRE themes, version 1.0 ()
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- atmospheric conditions
- Limitations on Public Access
- otherRestrictions
- Other constraints
- Public data: access to these data is available to both registered and non-registered users.
- Use constraints
- otherRestrictions
- Spatial representation type
- grid
- Topic category
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- Climatology, meteorology, atmosphere
))
- Begin date
- 1978-10-18T23:00:00
- End date
- 1996-12-31T00:00:00
- Code
- WGS 84
Distribution Information
- Data format
-
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Image files are GIF formatted. Movie files are mpeg formatted.
()
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Image files are GIF formatted. Movie files are mpeg formatted.
()
- Resource Locator
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CEDA Data Catalogue Page
Detail and access information for the resource
- Resource Locator
-
DOWNLOAD
Download Data
- Resource Locator
-
PPSM AVHRR 1.25km data documentation
No further details.
- Resource Locator
-
CEDA Data Catalogue Page
Detail and access information for the resource
- Resource Locator
-
DOWNLOAD
Download Data
- Resource Locator
-
PPSM AVHRR 1.25km data documentation
No further details.
- Quality Scope
- dataset
Report
- Dataset Reference Date ()
- 2010-12-08
- Statement
- CD-ROM data produced by the National Snow and Ice Data Centre and published in 2000. Data are stored at the BADC.
Metadata
- File identifier
- b2f21e4972c90504ed837367b06acc91 XML
- Metadata Language
- English (en)
- Character set
- 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
- Parent identifier
- Polar Pathfinder Sampler (PPSM): Combined Time Series of Atmospheric and Surface Measurements from the AVHRR, SMMR-SSM/I and TOVS Satellites a6ca5bc1b36d1b1a83cba4e4ac4b0bac
- Resource type
- dataset
- Metadata Date
- 2023-09-21T23:28:03
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
