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Arctic Soil Freeze/Thaw Status from SMMR and SSM/I, Version 2

Entry ID: ggd641

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Summary

Abstract: This data set contains near-surface (< 5 cm) soil freeze/thaw status on snow-free and snow-covered land surfaces over the Arctic terrestrial drainage basin. The near-surface soil freeze/thaw status is determined by using passive-microwave remote sensing data over snow-free land and a numerical model over snow-covered land. Data are projected to a 25 km x 25 km Northern Hemisphere EASE-Grid. Version 2 of this data set greatly extends the temporal coverage and makes use of data from SMMR as well as SSM/I. Data are from October 1978 to June 2004. Data are in ASCII text format and are available via FTP.

Related URL

Link: VIEW RELATED INFORMATION

Description: All About EASE-Grid

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 90.0

S: 45.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: Zhang, T. and R. Armstrong

Dataset Title: Arctic Soil Freeze/Thaw Status from SMMR and SSM/I, Version 2

Dataset Release Date: 2005-12-15

Dataset Release Place: Boulder, CO

Dataset Publisher: National Snow and Ice Data Center (NSIDC)

Version: 2

Data Presentation Form: Digital Media

Online Resource: http://nsidc.org/data/ggd641.html

Temporal Coverage

Start Date: 1978-10-01

Stop Date: 2004-06-30

Location Keywords

GEOGRAPHIC REGION > ARCTIC

GEOGRAPHIC REGION > POLAR

Data Resolution

Latitude Resolution: 25 km
Longitude Resolution: 25 km
Horizontal Resolution Range: 10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution: daily
Temporal Resolution Range: Daily - < Weekly

Science Keywords

CRYOSPHERE > SNOW/ICE > FREEZE/THAW

TERRESTRIAL HYDROSPHERE > SNOW/ICE > FREEZE/THAW

CRYOSPHERE > FROZEN GROUND > SEASONALLY FROZEN GROUND

LAND SURFACE > FROZEN GROUND > SEASONALLY FROZEN GROUND

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

GEOSCIENTIFIC INFORMATION

Instrument

SMMR > Scanning Multichannel Microwave Radiometer

SSMI > Special Sensor Microwave/Imager

Ancillary Keywords

Seasonal Freeze/thaw

Data Set Progress

COMPLETE

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 at 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

World Data Center for Glaciology, Boulder

Data Center URL: http://nsidc.org/wdc/
Dataset ID: GGD641

Data Center Personnel
Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at 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: NSIDC FGDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at 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 Size: 148.3 MB

Distribution Format: ASCII text

Personnel

TINGJUN ZHANG

Role: INVESTIGATOR

Phone: 303-492-6199

Fax: 303-492-2359

Email: nsidc at nsidc.org

Contact Address:

National Snow and Ice Data Center

University of Colorado

CIRES, 449 UCB

City: Boulder

Province or State: Colorado

Postal Code: 80309-0449

Country: USA

RICHARD ARMSTRONG

Role: INVESTIGATOR

Phone: +1 (303)-492-6199

Fax: +1 (303)-492-2468

Email: rlax at nsidc.org

Contact Address:

National Snow and Ice Data Center

CIRES 449 UCB

University of Colorado

City: Boulder

Province or State: Colorado

Postal Code: 80309-0449

Country: USA

Publications/References

Armstrong, R.L., and M.J. Brodzik. 2002. Northern Hemisphere EASE-Grid weekly snow cover and sea ice extent, Version 2. Boulder, CO: National Snow and Ice Data Center. CD-ROM. Brodzik, M.J. 1997. EASE-Grid: A versatile set of equal-area projections and grids. Boulder, CO, USA: National Snow and Ice Data Center. Brown, J., O.J. Ferrians, Jr., J.A. Heginbottom, and E.S. Melnikov. 1998. Digital ... Circum-Arctic map of permafrost and ground-ice conditions. In International Permafrost Association, Data and Information Working Group, comp. Circumpolar Active-Layer Permafrost System (CAPS), version 1.0. Boulder, CO: National Snow and Ice Data Center. CD-ROM. Chang, A.T.C., J.L. Foster, and D.K. Hall. 1987. Nimbus-7 SMMR derived global snow cover parameters. Annals of Glaciology 9:39-44. Global Soil Data Task. 2000. Global gridded surfaces of selected soil characteristics. International Geosphere-Biosphere Programme - Data and Information Services (IGBP-DIS). Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center. Available online at http://www.daac.ornl.gov. Goodrich, L.E. 1982. Efficient numerical technique for one-dimensional thermal problems with phase change. International Journal of Heat and Mass Transfer 21:615-621. Holden, J.B., C.J. V√∂r√∂smarty, S. Frolking, and R. Lammers. 2001. A large-scale water balance model for permafrost terrain. Arctic and Alpine Research. In press. Kalnay, E., M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woolen, Y. Zhu, M. Chelliah, W. Ebisuzaki, W. Higgens, J. Janowiak, K.C. Mo, C. Ropelewski, J. Wang, A. Leetma, R. Reynolds, R. Jenne, and D. Joseph. 1996. The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society 77:437-471. Meteorological Service of Canada (MSC). 2000. Canadian Snow Data CD-ROM. Downsview, Ontario, Canada: Meteorological Service of Canada, CRYSYS Project, Climate Processes and Earth Observation Division. Oelke, C., T. Zhang, M. Serreze, and R. Armstrong. 2003. Regional-scale modeling of soil freeze/thaw over the Arctic drainage basin. Journal of Geophysical Research. In press. Sturm, M., J. Holmgren, and G.E. Liston. 1995. A seasonal snow cover classification system for local to global applications. Journal of Climate 8:1261-1283. Zhang, T., and R.L. Armstrong. 2001. Soil freeze/thaw cycles over snow-free land detected by passive microwave remote sensing. Geophysical Research Letters 28(5): 763-766. Zhang, T., J.A. Heginbottom, R.G. Barry, and J. Brown. 2000. Further statistics on the distribution of permafrost and ground-ice in the Northern Hemisphere. Polar Geography 24(2):126-131. Zhang, T., R.G. Barry, K. Knowles, J.A. Heginbottom, and J. Brown. 1999. Statistics and characteristics of permafrost and ground ice distribution in the Northern Hemisphere. Polar Geography 23(2):147-169. Zhang, T., T.E. Osterkamp, and K. Stamnes. 1996. Influence of the depth hoar layer of the seasonal snow cover on the ground thermal regime. Water Resources Research 32(7):2075-2086.

Creation and Review Dates

Last DIF Revision Date: 2011-01-24

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