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

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Identification Information:

Dataset Identifier:

GGD245

Citation:

Citation Information:

Originator: Donald (Skip) Walker, Marilyn Walker, Jeff Welker, Tim Seastedt, and Bill Krantz
Publication Date: 20030617
Title: Response of Tundra Ecosystems to Altered Snow Regimes, Toolik Lake, Alaska, and Niwot Ridge, Colorado
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/ggd245.html

Description:

Abstract:

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.

Purpose: scientific research

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: -148°
East Bounding Coordinate: -105°
North Bounding Coordinate: 68°
South Bounding Coordinate: 40°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Atmosphere Atmospheric Temperature Surface Air Temperature
Theme Keyword: EARTH SCIENCE Atmosphere Precipitation Snow
Theme Keyword: EARTH SCIENCE Cryosphere Frozen Ground Active Layer
Theme Keyword: EARTH SCIENCE Cryosphere Frozen Ground Soil Temperature
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Cover
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow Depth
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Temperature
Theme Keyword: EARTH SCIENCE Land Surface Frozen Ground Active Layer
Theme Keyword: EARTH SCIENCE Land Surface Frozen Ground Soil Temperature
Theme Keyword: EARTH SCIENCE Land Surface Soils Soil Temperature
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Cover
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow Depth
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Temperature

Theme:

Theme Keyword Thesaurus: None
Theme Keyword:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
Theme Keyword: GROUND STATIONS
Theme Keyword: GROUND-BASED OBSERVATIONS

Theme:

Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: climatologyMeteorologyAtmosphere

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: Active Layer
Theme Keyword: Chemistry
Theme Keyword: Snow
Theme Keyword: Soil Properties
Theme Keyword: Thermal Properties
Theme Keyword: Vegetation

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent North America Alaska, Colorado
Place Keyword: Continent North America United States Of America Alaska, Colorado

Access Constraints:

None

Use Constraints:

None

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: Marilyn Walker

Contact Address:

Address Type: mailing
Address:
  • University of Alaska Fairbanks
  • Boreal Ecology Cooperative Research Unit
  • School of Agriculture and Land Resources Management
  • P.O. Box 756780
City: Fairbanks
State or Province: AK
Postal Code: 99775-7000

Contact Voice Telephone: 1 907 474-2424
Contact Facsimile Telephone: 1 907 474-6251
Contact Electronic Mail Address: ffmdw@uaf.edu

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: Frozen Ground Data Center
Contact Person: FGDC 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 x
Contact Facsimile Telephone: 1 303 492-2468 x
Contact Electronic Mail Address: nsidc@nsidc.org

Resource Description:

GGD245

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:

20050107

Metadata Review Date:

20050107

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: FGDC User Services
Contact Organization: Frozen Ground 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 x
Contact Facsimile Telephone: 1 303 492-2468 x
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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Metadata Views

FGDC Text-Only

Federal Geographic Data Committee (FGDC) in plain text

FGDC XML

Federal Geographic Data Committee (FGDC) in Extensible Markup Language (XML)

DIF HTML

NASA Global Change Master Directory (GCMD) Directory Interchange Format (DIF)

ISO HTML

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