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Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data

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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:

Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data

Contact:

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 x

Contact Address:

Delivery Point: CIRES, 449 UCB
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: pointOfContact
CodeList: CI_RoleCode

Date Stamp:

2014-07-22

Metadata Standard Name:

ISO 19115 Geographic Information - Metadata First Edition

Metadata Standard Version:

ISO 19115:2003

Dataset URI:

http://nsidc.org/data/nsidc-0218.html

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Data Identification Information:

Citation:

Citation Information:

Title: Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
Date:
Date: 2008
Date Type:
Value: publication
CodeList: CI_DateTypeCode
Edition Date: 2008-02-25
Identifier: NSIDC-0218
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:

The Greenland ice sheet melt extent data, acquired as part of the NASA Program for Arctic Regional Climate Assessment (PARCA), is a daily (or every other day, prior to August 1987) estimate of the spatial extent of wet snow on the Greenland ice sheet since 1979. It is derived from passive microwave satellite brightness temperature characteristics using the Cross-Polarized Gradient Ratio (XPGR) of Abdalati and Steffen (1997). It is physically based on the changes in microwave emission characteristics observable in data from the Scanning Multi-channel Microwave Radiometer (SMMR) and the Special Sensor Microwave/Imager (SSM/I) instruments when surface snow melts. It is not a direct measure of the snow wetness but rather is a binary indicator of the state of melt of each SMMR and SSM/I pixel on the ice sheet for each day of observation. It is, however, a useful proxy for the amount of melt that occurs on the Greenland ice sheet. The data are provided in a variety of formats including raw data in ASCII format, gridded daily data in binary format, and annual and complete time series climatologies in gridded binary and GeoTIFF format. All data are in a 60 x 109 pixel subset of the standard Northern Hemisphere polar stereographic grid with a 25 km resolution and are available via FTP.

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.

Waleed Abdalati. 2008. Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center.

Status:

Value: underDevelopment
CodeList: MD_ProgressCode

Point of Contact:

Responsible Party:

Individual Name: Waleed Abdalati
Organization Name: University of Colorado-Boulder/ CIRES
Contact:

Contact Address:

City: Boulder
Administrative Area: CO
Postal Code: 80309
Country: USA
Email: waleed.abdalati@colorado.edu

Contact Role:

Value: principalInvestigator
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 x

Contact Address:

Delivery Point: CIRES, 449 UCB
City: Boulder
Administrative Area: CO
Postal Code: 80309-0449
Country: USA
Email: nsidc@nsidc.org

Contact Role:

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

Contact Phone:

Contact Voice Telephone: 1 303 492-6199 x

Contact Address:

Delivery Point: CIRES, 449 UCB
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: pointOfContact
CodeList: CI_RoleCode

Descriptive Keywords:

Keywords

Keyword: Continent > North America > Greenland
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 Melt
Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
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: PARCA > Program in Arctic Regional Climate Assessment
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: Greenland
Keyword: Ice Sheet
Keyword: PARCA
Keyword: Passive Microwave
Keyword: Passive Microwave Data
Keyword: Polar Stereographic
Keyword: SMMR
Keyword: Snow Melt
Keyword: SSM/I
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: geoscientificInformation
CodeList: MD_topicCategoryCode

Topic Category:

Value: imageryBaseMapsEarthCover
CodeList: MD_topicCategoryCode

Extent Information:

Spatial Temporal Extent:

Geographic Element:

Bounding Coordinates:

 

Westbound Longitude: -73
Eastbound Longitude: -10
Southbound Latitude: 60
Northbound Latitude: 84

Temporal Element:

Time Period:

Begin Position: 19790402
End Position: 20071231

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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 13 KB

Data File Format:

Name: ASCII Text (.txt)
Specification: FTP 0 - 16 KB

Data File Format:

Name: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
Specification: FTP 2 - 4 KB

Digital Transfer Options:

Online Transfer Options:

Online Resources:

Linkage: ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
Description: Data Access URL
Function:

Value: download
CodeList: CI_OnLineFunctionCode

Function:

Value:
CodeList: CI_OnLineFunctionCode

Linkage: http://nsidc.org/data/docs/daac/parca/nsidc0218_greenland_melt_pm/
Description: Documentation URL
Function:

Value: information
CodeList: CI_OnLineFunctionCode

Offline Transfer Options:

Offline Resources:

Name:

Value: onLine
CodeList: MD_MediumNameCode
Density: 13
Density Units: B
Medium Name: FTP

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Data Acquisition Information:

Instrument Information:

Instrument:

Name: SMMR > Scanning Multichannel Microwave Radiometer
Type: sensor

Instrument:

Name: SSM/I > Special Sensor Microwave/Imager
Type: sensor

Platform Information:

Platform:

Name: DMSP 5D-2/F11 > Defense Meteorological Satellite Program-F11
Description: satellite
Instrument: N/A

Platform:

Name: DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13
Description: satellite
Instrument: N/A

Platform:

Name: DMSP 5D-2/F8 > Defense Meteorological Satellite Program-F8
Description: satellite
Instrument: N/A

Platform:

Name: NIMBUS-7
Description: satellite
Instrument: N/A

Platform:

Name: SATELLITES
Description: satellite
Instrument: N/A

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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)