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CLPX-Ground: Sub-Canopy Energetics at the Local Scale Observation Site (LSOS)

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Entry ID

NSIDC-0170

Summary

This data set consists of solar and longwave radiation data from beneath two pine canopies (one uniform, one discontinuous) at the Local Scale Observation Site (LSOS) of the Cold Land Processes Field Experiment (CLPX) in northern Colorado. The LSOS is a 100 x 100-m study site located within the Fraser Intensive Study Area (ISA). The study area has flat topography with both a dense pine stand and an open pine stand. Data were collected during February and March 2002 and 2003.

This work addresses two of the overall CLPX questions: (1) How do the extent and evolution of snow and frozen landscapes affect fluxes, storage, and transformations of water, energy, and carbon? (2) At what scales does spatial variability of key state variables in the cryosphere (including snow characteristics, soil moisture, the extent of frozen soils, and the transition between frozen and thawed conditions) control fluxes and transformations of water, energy, and carbon, and can remote sensing resolve this variability at these scales?

The NASA CLPX is a multi-sensor, multi-scale experiment that focuses on extending a local-scale understanding of water fluxes, storage, and transformations to regional and global scales. Within a framework of nested study areas in the central Rocky Mountains of the western United States, ranging from 1-ha to 160,000 km2, intensive ground, airborne, and spaceborne observations are collected. Data collection focuses on two seasons: mid-winter, when conditions are generally frozen and dry, and early spring, a transitional period when both frozen and thawed, dry and wet conditions are widespread.

Geographic Coverage

 

Spatial Coordinates:
N: 39.9038°     S: 39.9038°     E: -105.883°     W: -105.883°    

Data Set Citation

Dataset Creator: Hardy, J., T. Link, D. Marks, R. A. Melloh, G. Koenig, and K. Elder.
Dataset Title: CLPX-Ground: Sub-Canopy Energetics at the Local Scale Observation Site (LSOS)
Dataset Release Date: 2002-11-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0170.html

Temporal Coverage

Start Date: 2001-11-01
Stop Date: 2003-03-31

Location Keywords

  • CONTINENT NORTH AMERICA COLORADO
  • GEOGRAPHIC REGION NORTHERN HEMISPHERE

Science Keywords

  • Atmosphere Atmospheric Radiation Longwave Radiation
  • Atmosphere Atmospheric Radiation Solar Radiation
  • Biosphere Vegetation Canopy Characteristics

Ancillary Keywords

  • Canopy Cover
  • Direct Solar Radiation
  • Longwave Downward Radiation
  • Longwave Radiation
  • Reflected Solar Radiation
  • Solar Radiation

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Instrument

  • INFRARED RADIOMETERS
  • PYRGEOMETERS

Project

  • CLPX Cold Land Processes Field Experiment

Data Center

NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html

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

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

Distribution

Distribution Media: FTP
Distribution Size: 18 - 209 KB
Distribution Format: GIF

Distribution Media: FTP
Distribution Size: 18 - 209 KB
Distribution Format: ASCII Text (.txt)

Distribution Media: FTP
Distribution Size: 18 - 209 KB
Distribution Format: Joint Photographic Expert Group (JPEG) (.jpg)

Personnel

Janet Hardy
Role: INVESTIGATOR
Phone: 1 603 646 4306
Email: Janet.P.Hardy@erdc.usace.army.mil
Contact Address:

  • CRREL
  • US Army Engineer Research & Development Center
  • ERDC - CRREL
  • 72 Lyme Road

City: Hanover
Province or State: NH
Postal Code: 03755

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 PROJECT HOME PAGE
CLPX Site

VIEW PROJECT HOME PAGE
Register as a CLPX user

Reference

Hardy, J., D. Cline, K. Elder, R. Davis, R. Armstrong, G. Castres Saint-Martin, R. DeRoo, T. Graf, Y. Koh, T. Koike, H-P. Marshall, K. McDonald, T. Painter, and K. Sarabandi (submitted). An Overview of Data from the Local Scale Observation Site of the Cold Land Processes Experiment (CLPX). Submitted to the Journal of Hydrometeorology.

Hardy, JP, R. Melloh, G. Koenig, J. Pomeroy, D. Marks and T. Link (2003). Solar variability beneath open and dense conifer canopies. Invited paper in Proceedings 2003 IUGG Meeting, June 30-July 11, 2003, (Sapporo, Japan), pp. C30-003.

Hardy, JP, R. Melloh, D. Marks, G. Koenig, J. Pomeroy, and T. Link (submitted). Solar Radiation Transmission Through Conifer Canopies. Submitted to Agricultural and Forest Meteorology.

Melloh R, J. Ballard, J. Hardy, C. Woodcock, J. Liu, J. Smith, G. Koenig, R. Davis (2003). Spatial distribution of canopy gaps in lodgepole pine forest. In Proceedings 60th Eastern Snow Conference, June 4-6, Sherbrooke, Quebec, Canada.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2002-11-01
Last DIF Revision Date: 2013-07-24

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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