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CLPX-Ground: Ground-Based Frequency Modulated Continuous Wave (FMCW) Radar

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Metadata Entity Set Information:

Language:

eng; usa

Character Set:

Value: UTF8
CodeList: MD_CharacterSetCode

Hierarchy Level:

Value: dataset
CodeList: MD_ScopeCode

Hierarchy Level Name:

CLPX-Ground: Ground-Based Frequency Modulated Continuous Wave (FMCW) Radar

Contact:

Responsible Party:

Individual Name: Hans-Peter Marshall
Organization Name: University of Colorado
Contact:

Contact Address:

Delivery Point: Campus Box 450
City: Boulder
Administrative Area: CO
Postal Code: 80309-0422
Country: USA

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Date Stamp:

2014-07-31

Metadata Standard Name:

ISO 19115 Geographic Information - Metadata First Edition

Metadata Standard Version:

ISO 19115:2003

Dataset URI:

http://nsidc.org/data/nsidc-0164.html

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Data Identification Information:

Citation:

Citation Information:

Title: CLPX-Ground: Ground-Based Frequency Modulated Continuous Wave (FMCW) Radar
Date:
Date: 2004
Date Type:
Value: publication
CodeList: CI_DateTypeCode
Edition Date: 2004-11-22
Identifier: NSIDC-0164
Cited Responsible Party:

Responsible Party:

Individual Name: NSIDC DAAC User Services
Organization Name: NASA DAAC at the National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org/daac/index.html

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Responsible Party:

Individual Name: NSIDC User Services
Organization Name: National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Abstract:

This data set is comprised of FMCW radar measurements, which are sensitive to electromagnetic discontinuities in the snowpack, made during the 2002 and 2003 Cold Land Processes Field Experiment (CLPX). The microwave interaction with a snow pack was measured using broadband frequency modulated continuous wave (FMCW) radar operating at between 2 and 18 GHz, incorporating the following frequencies: C-Band (2-6 GHz), X-Band (8-12 GHz), and Ku-Band (14-18 GHz). Measurements were made at the Local Scale Observation Site (LSOS) near Fraser, Colorado, during Intensive Observation Periods (IOP) 1 and 2 (February and March, 2002), and at four different sites covering each of the three Mesocell Study Areas (MSAs) during IOP 3 and 4 (February and March, 2003). Active microwave radar signals are reflected and scattered by electromagnetic discontinuities that affect radar backscatter signatures. The location and magnitude of these discontinuities in a snow pack must be identified as a function of microwave frequency in order to accurately invert snow cover properties from active and passive microwave remote sensing systems. Consequently, in conjunction with the radar measurements, detailed snow pit measurements were taken at a nearby site in order to correlate the radar profile with the snow pit records. This investigation found that radar operating at 14-18 GHz contains the most information about the internal features of a dry snow pack. However, the high-frequency radar is of limited use in wet snow due to the high absorption loss in water. For a wet snowpack, radar operating at lower frequencies (2-6 GHz) was necessary for penetrating to the snow-ground interface. These findings suggest that a dual-frequency approach for radar remote sensing may be necessary to retrieve snow pack parameters such as density, depth, and wetness. 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.

Purpose:

Scientific Research

Credit:

The following example shows how to cite the use of this data set in a publication. For more information, see our Use and Copyright Web page.

Marshall, H., G. Koh, and R. Forster. 2004. CLPX-Ground: Ground-Based Frequency Modulated Continuous Wave (FMCW) Radar. [indicate subset used]. Boulder, Colorado USA: NASA DAAC at the National Snow and Ice Data Center.

Status:

Value: complete
CodeList: MD_ProgressCode

Point of Contact:

Responsible Party:

Individual Name: Hans-Peter Marshall
Organization Name: University of Colorado
Contact:

Contact Address:

Delivery Point: Campus Box 450
City: Boulder
Administrative Area: CO
Postal Code: 80309-0422
Country: USA

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Maintenance Information:

Maintenance and Update Frequency:

Value: asNeeded
CodeList: MD_MaintenanceFrequencyCode

Update Scope:

Value: dataset
CodeList: MD_ScopeCode

Value: series
CodeList: MD_ScopeCode

Value: attribute
CodeList: MD_ScopeCode

Contact:

Responsible Party:

Individual Name: Hans-Peter Marshall
Organization Name: University of Colorado
Contact:

Contact Address:

Delivery Point: Campus Box 450
City: Boulder
Administrative Area: CO
Postal Code: 80309-0422
Country: USA

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: principalInvestigator
CodeList: CI_RoleCode

Descriptive Keywords:

Keywords

Keyword: Continent > North America
Keyword: Continent > North America > United States Of America > Colorado, Wyoming
Keyword: Geographic Region > Northern Hemisphere
Keyword Type:
Value: place
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Location Keywords
Date:
Date: 2008-02-05
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Cover
Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Depth
Keyword: EARTH SCIENCE > Spectral/Engineering > Radar > Radar Reflectivity
Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Cover
Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Depth
Keyword Type:
Value: discipline
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Science Keywords
Date:
Date: 2008-02-05
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: CLPX > Cold Land Processes Field Experiment
Keyword Type:
Value: theme
CodeList: MD_KeywordTypeCode
Keyword Thesaurus:

Citation Information:

Title: NASA / GCMD Project Keywords
Date:
Date: 2008-01-24
Date Type:
Value: revision
CodeList: CI_DateTypeCode

Keywords

Keyword: continuous wave radar
Keyword: Radar
Keyword: Snow Depth
Keyword Type:
Value: theme
CodeList: MD_KeywordTypeCode

Dataset Constraints:

Legal Constraints:

Access Constraints:

Value: otherRestrictions
CodeList: MD_RestrictionCode

Use Constraints:

Value: otherRestrictions
CodeList: MD_RestrictionCode

Other Constraints:

Access Constraints : none

Use Constraints : none

Language:

eng; usa

Character Set:

Value: UTF8
CodeList: MD_CharacterSetCode

Topic Category:

Value: climatologyMeteorologyAtmosphere
CodeList: MD_topicCategoryCode

Extent Information:

Spatial Temporal Extent:

Geographic Element:

Bounding Coordinates:

 

Westbound Longitude: -106.6788
Eastbound Longitude: -105.7681
Southbound Latitude: 39.828
Northbound Latitude: 40.6449

Temporal Element:

Time Period:

Begin Position: 20020219
End Position: 20030329

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Distribution Information:

Distributor Information:

Distributor Contact:

Responsible Party:

Individual Name: NSIDC DAAC User Services
Organization Name: NASA DAAC at the National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org/daac/index.html

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Responsible Party:

Individual Name: NSIDC User Services
Organization Name: National Snow and Ice Data Center
Contact:

Contact Phone:

Contact Voice Telephone: 1 303 492-6199

Contact Address:

Delivery Point: National Snow and Ice Data Center
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Online Resources:

Website: http://nsidc.org

Contact Role:

Value: custodian
CodeList: CI_RoleCode

Distribution Format(s):

Data File Format:

Name: Binary
Specification: FTP 0.02 - 11.2 MB

Data File Format:

Name: ASCII Text (.txt)
Specification: FTP 0.02 - 11.2 MB

Data File Format:

Name: Joint Photographic Expert Group (JPEG) (.jpg)
Specification: FTP 0.02 - 11.2 MB

Digital Transfer Options:

Online Transfer Options:

Online Resources:

Linkage: ftp://sidads.colorado.edu/pub/DATASETS/CLP/data/ground_data/nsidc0164_lsos_fmcw/
Description: Data Access URL
Function:

Value: download
CodeList: CI_OnLineFunctionCode

Linkage: http://nsidc.org/data/docs/daac/nsidc0164_clpx_fmcw/
Description: Documentation URL
Function:

Value: information
CodeList: CI_OnLineFunctionCode

Offline Transfer Options:

Offline Resources:

Name:

Value: onLine
CodeList: MD_MediumNameCode
Density: 0.02
Density Units: MB
Medium Name: FTP

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Metadata Views

ISO Text-Only

International Organization for Standardization (ISO) in plain text

ISO XML

International Organization for Standardization (ISO) in Extensible Markup Language (XML)

DIF HTML

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

FGDC HTML

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