AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites  View Catalog Page
Identification Information:
Dataset Identifier:
NSIDC-0094
Citation:
Citation Information:
Originator: C. Fowler, J. Maslanik, T. Haran, T. Scambos, J. Key, and W. Emery.
Publication Date: 20020101
Title: AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0094.html
Description:
Abstract:
This data set is no longer available for use because of errors in the data. However, replacement data are expected by the end of 2012. If you need information pertaining to the data errors, please see the Error Sources Section of the guide documentation. If you have further questions, contact NSIDC User Services by e-mail: nsidc@nsidc.org or by telephone +1 303.492.6199.
The AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites are a collection of products for both poles, consisting of twice-daily gridded and calibrated satellite channel data and derived parameters. Data include five Advanced Very High Resolution Radiometer (AVHRR) channels, clear sky surface broadband albedo and skin temperature, average albedo and temperature, valid fraction file, solar zenith angle, satellite elevation angle, sun-satellite relative azimuth angle, surface type mask, cloud mask, cloud fraction files, and Universal Coordinated Time (UTC) of acquisition. The 25 km data are derived from the AVHRR Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites, and extend poleward from 48.4 degrees north and 53.2 degrees south latitudes, spanning July 1981 through December 2000. Data are in 1-byte and 2-byte integer grid format and are available by FTP.
Note: NSIDC reccommends the use of the Extended AVHRR Polar Pathfinder (APP-x) Product instead of our AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites. The APP-x 25 km product has albedo and temperature calculations for all sky conditions. Cloud properties are modeled to estimate the albedo and temperature under the clouds. An improved cloud detection algorithm is also used in the APP-x product.
Purpose: scientific research
Documentation:
User's Guide:
Citation Information:
Originator: C. Fowler, J. Maslanik, T. Haran, T. Scambos, J. Key, and W. Emery.
Publication Date: 20020101
Title: AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/nsidc0094_avhrr_25km_abstract.gd.html
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 19810724
Ending Date: 20001231
Currentness Reference: publication date
Status:
Progress: In work
Maintenance and Update Frequency: Unknown
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -180°
East Bounding Coordinate: 180°
North Bounding Coordinate: 90°
South Bounding Coordinate: -90°
Keywords:
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Radiation Albedo
Theme Keyword: EARTH SCIENCE Atmosphere Clouds Cloud Amount/Frequency
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Albedo
Theme Keyword: EARTH SCIENCE Land Surface Land Temperature Land Surface Temperature
Theme Keyword: EARTH SCIENCE Land Surface Land Temperature Skin Temperature
Theme Keyword: EARTH SCIENCE Land Surface Surface Radiative Properties Albedo
Theme Keyword: EARTH SCIENCE Land Surface Surface Radiative Properties Thermal Properties
Theme Keyword: EARTH SCIENCE Spectral/Engineering Infrared Wavelengths Infrared Radiance
Theme Keyword: EARTH SCIENCE Spectral/Engineering Infrared Wavelengths Thermal Infrared
Theme Keyword: EARTH SCIENCE Spectral/Engineering Platform Characteristics Viewing Geometry
Theme Keyword: EARTH SCIENCE Spectral/Engineering Visible Wavelengths Visible Radiance
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Albedo
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: NOAA/NASA PATHFINDER NOAA/NASA Pathfinder Program
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: AVHRR Advanced Very High Resolution Radiometer
Theme Keyword: RADIOMETERS
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: NOAA-11 National Oceanic & Atmospheric Administration-11
Theme Keyword: NOAA-14 National Oceanic & Atmospheric Administration-14
Theme Keyword: NOAA-7 National Oceanic & Atmospheric Administration-7
Theme Keyword: NOAA-9 National Oceanic & Atmospheric Administration-9
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Antarctic
Theme Keyword: Arctic
Theme Keyword: AVHRR
Theme Keyword: Cryosphere
Theme Keyword: DAAC
Theme Keyword: EOSDIS
Theme Keyword: NASA
Theme Keyword: NOAA
Theme Keyword: NSIDC
Theme Keyword: Pathfinder
Theme Keyword: Polar
Theme Keyword: Radiance
Theme Keyword: Remote Sensing
Theme Keyword: Satellite
Place:
Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent Antarctica
Place Keyword: Geographic Region Arctic
Place Keyword: Geographic Region Polar
Access Constraints:
None
Use Constraints:
None
Point of Contact:
Contact Information:
Contact Person Primary:
Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center
Contact Address:
Address Type: mailing
Address:
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199 x
Contact Facsimile Telephone: 1 303 492-2468 x
Contact Electronic Mail Address: nsidc@nsidc.org
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Distribution Information:
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC User Services
Contact Address:
Address Type: mailing
Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org
Resource Description:
NSIDC-0094
Distribution Liability:
NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
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Metadata Reference Information:
Metadata Date:
20120814
Metadata Review Date:
20120814
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice Data Center
Contact Address:
Address Type: mailing
Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
State or Province: CO
Postal Code: 80309-0449
Country: USA
Contact Voice Telephone: 1 303 492-6199
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata:
Extensions for Remote Sensing Metadata
Metadata Standard Version:
FGDC-STD-012-2002
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