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Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001

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Identification Information:

Dataset Identifier:

NSIDC-0290

Citation:

Citation Information:

Originator: Jeffery P. Severinghaus
Publication Date: 20060817
Title: Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/nsidc-0290.html
Online Linkage: http://dx.doi.org/10.7265/N5FJ2DQC

Description:

Abstract:

This data set includes gas ratios in polar firn air: O2/N2, 15N/14N, 40Ar/N2, 40Ar/36Ar, 40Ar/38Ar, 84Kr/36Ar, 132Xe/36Ar, and 22Ne/36Ar. Investigators sampled air from the permeable snowpack (firn) layer at two sites: Siple Dome, Antarctica in 1996 and at the South Pole in 2001. They observed and modeled the processes of gravitational settling, thermal fractionation, and preferential exclusion of small gas molecules from closed air bubbles. The purpose of this study was to understand these physical processes, which affect the composition of bubbles trapped in ice. By measuring these gas ratios in the ancient air preserved in bubbles trapped in ice, researchers can determine past atmospheric composition and local temperature changes along with the relative timing and magnitude of such events.

The data file is available in Microsoft Excel format. The research paper is available in PDF. Data and the research paper are available via FTP.

Purpose: scientific research

Documentation:

User's Guide:

Citation Information:

Originator: Jeffery P. Severinghaus
Publication Date: 20060817
Title: Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001
Publication Information:
Publication Place: Boulder, Colorado USA
Publisher: NSIDC: National Snow and Ice Data Center
Online Linkage: http://nsidc.org/data/docs/agdc/nsidc0290_severinghaus/

Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 19961215
Ending Date: 20010121

Currentness Reference: publication date

Status:

Progress: Complete
Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

 

West Bounding Coordinate: -148.767°
East Bounding Coordinate: 180°
North Bounding Coordinate: -80.667°
South Bounding Coordinate: -90°

Keywords:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Firn
Theme Keyword: EARTH SCIENCE Cryosphere Glaciers/Ice Sheets Ice Sheets
Theme Keyword: EARTH SCIENCE Cryosphere Sea Ice Isotopes
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice
Theme Keyword: EARTH SCIENCE Cryosphere Snow/Ice Snow/Ice Chemistry
Theme Keyword: EARTH SCIENCE Oceans Sea Ice Isotopes
Theme Keyword: EARTH SCIENCE Paleoclimate Ice Core Records Ice Core Air Bubbles
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice
Theme Keyword: EARTH SCIENCE Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry

Theme:

Theme Keyword Thesaurus: None
Theme Keyword:

Theme:

Theme Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
Theme Keyword: CORING DEVICES
Theme Keyword: FLASKS
Theme Keyword: MASS SPECTROMETERS

Theme:

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

Theme:

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

Theme:

Theme Keyword Thesaurus: None
Theme Keyword: Antarctica
Theme Keyword: Atmospheric Gases
Theme Keyword: Firn Air Isotope Measurements
Theme Keyword: Firn Air Isotopes
Theme Keyword: Firn Isotopes
Theme Keyword: Gas Isotopes
Theme Keyword: Ice Core
Theme Keyword: Ice Core Chemistry
Theme Keyword: Ice Core Data
Theme Keyword: Ice Core Gas Records
Theme Keyword: Polar Firn Air
Theme Keyword: Shallow Firn Air
Theme Keyword: Siple Dome
Theme Keyword: South Pole
Theme Keyword: Thermal Fractionation
Theme Keyword: Trapped Air Bubbles
Theme Keyword: Trapped Gases

Place:

Place Keyword Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
Place Keyword: Continent Antarctica

Access Constraints:

None

Use Constraints:

None

Point of Contact:

Contact Information:

Contact Person Primary:

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

Contact Address:

Address Type: mailing
Address:
  • 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

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Distribution Information:

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: National Snow and Ice Data Center
Contact Person: NSIDC 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
Contact Facsimile Telephone: 1 303 492-2468
Contact Electronic Mail Address: nsidc@nsidc.org

Resource Description:

NSIDC-0290

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.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: Microsoft Excel

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: Click here.

Fees: None

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: PDF

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: Click here.

Fees: None

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Metadata Reference Information:

Metadata Date:

20140314

Metadata Review Date:

20140314

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: NSIDC User Services
Contact Organization: National Snow and Ice 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
Contact Facsimile Telephone: 1 303 492-2468
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