NSIDC-0098_1

Firn Air Isotope and Temperature Measurements from Siple Dome and South Pole, Version 1

Version 1 eng; usa
  • Abstract
    This data set includes d15N, d18O/2, dO2/N2/4, d40Ar/4, d38/Ar/2, d84Kr/48, and d132Xe/96 values for air drawn from the top 15 to 50 m of firn at the South Pole (summer and winter 1998) and a site at Siple Dome (summers 1996 and 1998). Data also include related firn temperature measurements. The objective of this research was to better understand thermal fractionation processes affecting records of atmospheric history from firn and ice core gases. Recent work (e.g., Severinghaus and Brook, 1999) has exploited trapped air in ice and deep firn as a record of past atmospheric composition and climate change. Interpretation of these paleoclimate archives is complicated by artifacts of thermal diffusion, a process in which heavier gases migrate down temperature gradients toward colder regions in the firn. Seasonal temperature change at the snow surface creates strong temperature gradients in the top few meters of the firn, which cause isotopic fractionation of firn gases. A specific goal of this research is to identify any long-term effects of seasonal temperature fluctuations on firn air isotopic anomalies.
  • Purpose
    Scientific Research

Data Identification Fields:

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    Processing Level

    NA

    Quality
    Collection Progress

    Complete

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • Paleoclimate
    • Ice Core Records
    • Ice Core Air Bubbles
    • Firn Air
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Glaciers/Ice Sheets
    • Ice Sheets
    • Firn Air Isotopes
    • EARTH SCIENCE
    • Cryosphere
    • Glaciers/Ice Sheets
    • Ice Sheets
    • Firn Air Isotopes
    • EARTH SCIENCE
    • Paleoclimate
    • Ice Core Records
    • Isotopes
    • Firn Air Isotopes
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Snow/Ice
    • Snow/Ice Temperature
    • Firn Temperature
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • Snow/Ice Temperature
    • Firn Temperature

Acquisition Information Fields:

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Platforms
  • In Situ Land-based Platforms
    GROUND STATIONS
    Instruments
    • MASS SPECTROMETERS
    • THERMISTORS
  • In Situ Land-based Platforms
    GROUND-BASED OBSERVATIONS
    Instruments
    • FLASKS
    • MASS SPECTROMETERS
    • THERMISTORS

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • Continent
    • Antarctica
    • Siple Dome

Data Centers

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  • National Snow and Ice Data Center
    ARCHIVER

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
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  • National Snow and Ice Data Center
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    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
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    ORIGINATOR

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Data Contacts

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  • Jeffrey
    Technical Contact
    Jeffrey Severinghaus

    Scripps Institution of Oceanography
    9500 Gilman Dr.
    La Jolla, CA 92037-0244

    • 1 858 822.2483
    • 1 858 822.3310
    • Email
  • A.
    Technical Contact
    A. Grachev

    Scripps Institution of Oceanography,
    University of California at San Diego

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  • Mark
    Technical Contact
    Mark Battle

    Bowdoin College,
    Brunswick, Maine

    This contact does not have any contact mechanisms listed.

  • Jeffrey
    Technical Contact
    Jeffrey Severinghaus

    Scripps Institution of Oceanography
    9500 Gilman Dr.
    La Jolla, CA 92037-0244

    • 1 858 822.2483
    • 1 858 822.3310
    • Email
  • A.
    Technical Contact
    A. Grachev

    Scripps Institution of Oceanography,
    University of California at San Diego

    This contact does not have any contact mechanisms listed.

  • Mark
    Technical Contact
    Mark Battle

    Bowdoin College,
    Brunswick, Maine

    This contact does not have any contact mechanisms listed.

  • National Snow and Ice Data Center
    User Services
    National Snow and Ice Data Center

    Boulder, Colorado

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  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

Collection Citations Fields:

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    Collection Citations
    • Firn Air Isotope and Temperature Measurements from Siple Dome and South Pole, Version 1
      1

      Published by: National Snow and Ice Data Center