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Response of Tundra Ecosystems to Altered Snow Regimes, Toolik Lake, Alaska, and Niwot Ridge, Colorado

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Entry ID

GGD245

Summary

This study investigated the effects of field manipulations of winter precipitation and summer temperature on species performance, community structure, and ecosystem C and N dynamics. Parameters include ground temperatures at the surface and 15 cm along a gradient of snow depths, snow depth, soil temperatures at 10 cm intervals at several sites in drifts and unimpacted vegetation sites, and active layer thickness. Temperature profiles were monitored continuously. Snow depths were monitored in a grid behind snow fences and in a 1 x 1 km grid surrounding the fence sites. Active layer was monitored at the end of the season. These data are part of the International Tundra Experiment (ITEX) network.

Geographic Coverage

 

Spatial Coordinates:
N: 68°     S: 40°     E: -105°     W: -148°    

Data Set Citation

Dataset Creator: Donald (Skip) Walker, Marilyn Walker, Jeff Welker, Tim Seastedt, and Bill Krantz
Dataset Title: Response of Tundra Ecosystems to Altered Snow Regimes, Toolik Lake, Alaska, and Niwot Ridge, Colorado
Dataset Release Date: 2003-06-17
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/ggd245.html

Location Keywords

  • CONTINENT NORTH AMERICA ALASKA, COLORADO
  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA ALASKA, COLORADO

Science Keywords

  • Atmosphere Atmospheric Temperature Surface Air Temperature
  • Atmosphere Precipitation Snow
  • Cryosphere Frozen Ground Active Layer
  • Cryosphere Frozen Ground Soil Temperature
  • Cryosphere Snow/Ice Snow Cover
  • Cryosphere Snow/Ice Snow Depth
  • Cryosphere Snow/Ice Snow/Ice Temperature
  • Land Surface Frozen Ground Active Layer
  • Land Surface Frozen Ground Soil Temperature
  • Land Surface Soils Soil Temperature
  • Terrestrial Hydrosphere Snow/Ice Snow Cover
  • Terrestrial Hydrosphere Snow/Ice Snow Depth
  • Terrestrial Hydrosphere Snow/Ice Snow/Ice Temperature

Ancillary Keywords

  • Active Layer
  • Chemistry
  • Snow
  • Soil Properties
  • Thermal Properties
  • Vegetation

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Platform

  • GROUND-BASED OBSERVATIONS
  • GROUND STATIONS

Data Center

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

Personnel

Marilyn Walker
Role: DATA AUTHOR
Phone: 1 907 474-2424
Fax: 1 907 474-6251
Email: ffmdw@uaf.edu
Contact Address:

  • University of Alaska Fairbanks
  • Boreal Ecology Cooperative Research Unit
  • School of Agriculture and Land Resources Management
  • P.O. Box 756780

City: Fairbanks
Province or State: AK
Postal Code: 99775-7000

Donald (Skip) A. Walker
Role: INVESTIGATOR
Phone: 1 907 474-2460
Email: ffdaw@uaf.edu
Contact Address:

  • University of Alaska at Fairbanks
  • Institute of Arctic Biology
  • Institute of Arctic Biology
  • University of Alaska Fairbanks

City: Fairbanks
Province or State: AK
Postal Code: 99775-6780
Country: USA

Jeff Welker
Role: INVESTIGATOR
Contact Address:

  • University of Colorado
  • INSTAAR
  • Campus Box 450

City: Boulder
Province or State: CO
Postal Code: 80309-0450
Country: USA

Tim Seastedt
Role: INVESTIGATOR
Contact Address:

  • University of Colorado
  • INSTAAR
  • Campus Box 450

City: Boulder
Province or State: CO
Postal Code: 80309-0450
Country: USA

Bill Krantz
Role: INVESTIGATOR
Contact Address:

  • University of Colorado
  • INSTAAR
  • Campus Box 450

City: Boulder
Province or State: CO
Postal Code: 80309-0450
Country: USA

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-06-17
Last DIF Revision Date: 2005-01-07

Metadata Views

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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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