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Northern Hemisphere EASE-Grid Annual Freezing and Thawing Indices, 1901 - 2002

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Entry ID

GGD649

Summary

This data set contains annual freezing and thawing indices for each year from 1901 to 2002 on the 25 km resolution Equal-Area Scalable Earth Grid (EASE-Grid). Annual freezing and thawing indices are defined as the cumulative number of degree-days when air temperatures are below and above 0 degrees C. The values were calculated based upon the monthly mean air temperature from the 1901-2002, 0.5 deg. global land temperatures from the University of East Anglia Climate Research Unit (Mitchell and Jones, 2005).

Two ASCII files are available for each year for the freezing and thawing indices, respectively. Each file is approximately 5.5 MB in size. In addition, there is one 10.4 MB ASCII file defining the latitude and longitude coordinates for each grid point. The data set is available in compressed form via FTP.

Geographic Coverage

 

Spatial Coordinates:
N: 90°     S: 0°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: T. Zhang, O. W. Frauenfeld, James McCreight, Roger Barry
Dataset Title: Northern Hemisphere EASE-Grid Annual Freezing and Thawing Indices, 1901 - 2002
Dataset Release Date: 2005-11-22
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/ggd649.html

Temporal Coverage

Start Date: 1901-01-01
Stop Date: 2002-12-31

Data Resolution

Latitude Resolution: 25 km
Longitude Resolution: 25 km
Temporal Resolution: 1 year

Location Keywords

  • GEOGRAPHIC REGION NORTHERN HEMISPHERE

Science Keywords

  • Atmosphere Atmospheric Temperature Air Temperature
  • Atmosphere Atmospheric Temperature Degree Days Freezing/Thawing Index
  • Atmosphere Atmospheric Temperature Surface Air Temperature

Ancillary Keywords

  • Freezing Degree Days
  • Freezing Index
  • Thawing Degree-day
  • Thawing Degree Days
  • Thawing Index

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere
  • Geoscientific Information

Data Center

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Frozen Ground Data Center
Data Center URL: http://nsidc.org/fgdc/

Data Center Personnel

Name: FGDC User Services
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Format: ASCII Text (.txt)

Personnel

Tingjun Z Zhang
Role: INVESTIGATOR
Phone: 1 303 492-6199 x
Fax: 1 303 492-2359 x
Email: nsidc@nsidc.org
Contact Address:

  • University of Colorado
  • National Snow and Ice Data Center/World Data Center for Glaciology
  • UCB449

City: Boulder
Province or State: Colorado
Postal Code: 80309-0449
Country: USA

Oliver W. Frauenfeld
Role: INVESTIGATOR
Contact Address:

  • University of Colorado
  • National Snow and Ice Data Center/World Data Center for Glaciology
  • UCB 449

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

R. G. Barry
Role: INVESTIGATOR
Contact Address:

  • University of Colorado
  • National Snow and Ice Data Center/World Data Center for Glaciology
  • 449 UCB

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Related URL

VIEW RELATED INFORMATION
All About EASE-Grid

Reference

Frauenfeld, O.W., T. Zhang, and J. L. McCreight. Submitted. Climatology and variability of the 20th century Northern Hemisphere freezing/thawing index. International Journal of Climatology.

Mitchell TD, Jones PD. 2005. An improved method of constructing a database of monthly climate observations and associated high-resolution grids. International Journal of Climatology 25, 693–712. Simmons A. J., P. D. Jones, V da Costa Bechtold, A. C. M. Beljaars, P. W. Kållberg, S. Saarinen, S. M. Uppala, P. Viterbo, and N. Wedi. 2004. Comparison of trends and variability in CRU, ERA-40, and NCEP/NCAR analyses of monthly-mean surface air temperature. ERA-40 Project Report Series No. 18, 38.

Willmott C.J. and K. Matsura. 2001. Terrestrial air temperature and precipitation: Monthly and annual time series (1950-1999). Newark, DE: Center for Climatic Research, Department of Geography, University of Delaware, Newark.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2005-11-22
Last DIF Revision Date: 2013-03-14

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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