Global Annual Freezing and Thawing Indices  View Catalog Page
Identification Information:
Dataset Identifier:
NSIDC-0063
Citation:
Citation Information:
Originator: Zhang, T.
Publication Date: 19980101
Title: Global Annual Freezing and Thawing Indices
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0063.html
Description:
Abstract:
The total annual freezing and thawing indices are defined as the cumulative number of degree-days when air temperatures are below and above zero degrees Celsius. The total annual freezing index has been widely used to predict permafrost distribution; estimate the maximum thickness of sea, lake, and river ice, and the maximum depth of ground-frost penetration; and classify snow types. The annual total thawing index has been used to predict permafrost distribution and to estimate the maximum depth of thaw in frozen ground. Both total freezing and thawing indices are important parameters for engineering design in cold regions.
Data coverage is global. The data set contains the total annual freezing and thawing indices with a spatial resolution of 0.5 degrees latitude by 0.5 degrees longitude. Two data files are available, for the freeze and thaw indices respectively, in flat binary format. Each file is approximately 1 MB in size. The total annual freezing and thawing indexes were calculated based upon the monthly mean air temperature by Legates and Willmott (1990).
Purpose: scientific research
Documentation:
User's Guide:
Citation Information:
Originator: Zhang, T.
Publication Date: 19980101
Title: Global Annual Freezing and Thawing Indices
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/daac/nsidc0063_freeze_thaw_indices.gd.html
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: Unknown
Ending Date: Unknown
Currentness Reference: publication date
Status:
Progress: Complete
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 Temperature Air Temperature
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Freeze/Thaw
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Permafrost
Theme Keyword: EARTH SCIENCE Land Surface Soils Permafrost
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Freeze/Thaw
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Permafrost
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
Theme Keyword: EOSDIS Earth Observing System Data Information System
Theme Keyword: ESIP Earth Science Information Partners Program
Theme:
Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: THERMISTORS
Theme Keyword: THERMOMETERS
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: Air Temperature
Theme Keyword: Cryosphere
Theme Keyword: Degree Days
Theme Keyword: Freeze
Theme Keyword: Frozen Ground
Theme Keyword: Frozen Soil
Theme Keyword: Ice Growth
Theme Keyword: Ice Melt
Theme Keyword: Permafrost
Theme Keyword: Snow Melt
Theme Keyword: Thaw
Place:
Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Geographic Region Global
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-0063
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:
20120726
Metadata Review Date:
20120726
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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