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Global Change Master Directory (GCMD)
Greenland Ice Core Project (GRIP) Methane Data, NOAA/NCDC, WDC Paleoclimatology
Entry ID: NGDC_WDCA_PALEO_GRIP_CH4

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Summary
Abstract: This data set consists of atmospheric methane (CH4) concentrations
from the 3,230 m ice core taken by the Greenland Ice-core Project
(GRIP) covering the period between 40,000 and 8,000 yBP. Methane
concentrations were measured from the air trapped in the ice.

The file contains five columns:

Column 1: True depth (meters below the surface)
Column 2: Mean age of the trapped air (calendar years Before Present)
Column 3: Mean CH4 concentration (ppbv, part per billion by volume)
Column 4: Minimum CH4 concentration (two sigma experimental, ppbv)
Column 5: Maximum CH4 concentration (two sigma experimental, ppbv)

Detailed information on the data contained in these files can be
obtained from Chappellaz, et al. (1993) and:

ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/grip/gases/grip
ch4.txt

NOTE: PLEASE CITE ORIGINAL REFERENCES WHEN USING THIS DATA!

Related URL
Link: GET DATA
Description: Greenland Summit Ice Cores CD-ROM


Link: GET DATA
Description: Access to GRIP methane data


Link: GET DATA
Description: World Data Centers Ice Core Gateway


Link: GET DATA
Description: DODS BaseURL to GRIP methane data at LDEO/IRI Climate Date Library


Link: VIEW RELATED INFORMATION
Description: GRIP methane data at LDEO/IRI Climate Date Library

Geographic Coverage
 N: 73.0 S: 72.0  E: -37.0  W: -38.0

Data Set Citation
Dataset Creator: J. Chappellaz
Dataset Title: Atmospheric Methane Concentration - GRIP Icecore
Dataset Series Name: IGBP PAGES/WDC-A Paleoclimatology Data Contribution #93-034
Dataset Release Date: 1993
Dataset Release Place: Boulder, CO
Dataset Publisher: NOAA/NGDC Paleoclimatology Program
Issue Identification: #93-034


Temporal Coverage
Start Date: 1992-05-01
Stop Date: 1993-05-31


Paleo_Temporal_Coverage
Paleo Start Date: 40,000 ybp
Paleo Stop Date: 8,000 ybp
Chrono Unit:

Paleo Start Date: 40,000 ybp
Paleo Stop Date: 8,000 ybp
Chrono Unit:


Location Keywords
CONTINENT > NORTH AMERICA > GREENLAND
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >TRACE GASES/TRACE SPECIES    [Definition]
PALEOCLIMATE >ICE CORE RECORDS >ICE CORE AIR BUBBLES    [Definition]
PALEOCLIMATE >ICE CORE RECORDS >ISOTOPES >OXYGEN ISOTOPES    [Definition]
PALEOCLIMATE >ICE CORE RECORDS >METHANE >METHANE CONCENTRATIONS    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW/ICE CHEMISTRY >ISOTOPES    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW/ICE CHEMISTRY >METHANE    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW/ICE CHEMISTRY >ISOTOPES    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW/ICE CHEMISTRY >METHANE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >METHANE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
INLAND WATERS


Platform
GROUND STATIONS    [Information]


Project
DODS >Distributed Oceanographic Data System    [Information]
GRIP >Greenland Ice Core Project    [Information]
IGBP >International Geosphere-Biosphere Programme    [Information]
ESIP >Earth Science Information Partners Program    [Information]
PAGES >Past Global Changes, IGBP    [Information]
OPENDAP >Open-source Project for a Network Data Access Protocol    [Information]


Keywords
CH4
CLIMATE
GREENLAND
GRIP
ICE
ICE CAP
ICE CORE
ICE CORES
METHANE
OXYGEN ISOTOPES
PALEOCLIMATE
PALEOENVIRONMENT
PLEISTOCENE
QUATERNARY


Originating Center
NOAA/NESDIS/NGDC


Data Center
Climate Data Library, International Research Institute for Climate Prediction, Lamont-Doherty Earth Observatory, Columbia University    [Information]
Data Center URL: http://ingrid.ldeo.columbia.edu/
Dataset ID: GRIP

Data Center Personnel
Name: IRI/LDEO CLIMATE DATA LIBRARY HELP
Email: help at iri.columbia.edu

World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA



Distribution
Distribution_Media: online ftp
Distribution_Size: 5 KB
Distribution_Format: ASCII
Fees: None


Personnel
JEROME CHAPPELLAZ
Role: INVESTIGATOR
Phone: +33 76 82 42 64
Fax: +33 76 82 42 01
Email: jerome at glaciog.grenet.fr
Contact Address:
CNRS Laboratoire de Glaciologie et Geophysique de l'Environnement
54, rue Moliere
Domaine Universitaire BP 96
City: St Martin d'Heres Cedex
Postal Code: 38402
Country: France


Publications/References
Barnola, J.M., Pimienta, P., Raynaud, D. and Korotkevich, Y.S. -
CO2-climate relationship as deduced from the Vostok ice core: a
re-examination based on new measurements and on a re-evaluation of the
air dating - Tellus 43B, 83-90, 1991.

Blunier, T., J.A. Chappellaz, J. Schwander, B. Stauffer, and D. Raynaud.
1995. Variations in atmospheric methane concentration during the Holocene
epoch. Nature 374:46-49.

Blunier, T., J.A. Chappellaz, J. Schwander, J.M. Barnola, T. Desperts, B.
Stauffer, and D. Raynaud. 1993. Atmospheric methane record from a Greenland
ice core over the last 1000 years. Geophysical Research Letters 20:2219
2222.

Chappellaz, J., Blunier, T., Raynaud, D., Barnola, J.M., Schwander,
J. and Stauffer, B. - Synchronous changes in atmospheric CH4 and
Greenland climate between 40 and 8 kyr BP - Nature 366, 443-445, 1993.

Chappellaz, J., Barnola, J.M., Raynaud, D., Korotkevich, Y.S. and
Lorius C. - Ice-core record of atmospheric methane over the past
160,000 years - Nature 345, 127-131, 1990.

Dansgaard, W., Jonhsen, S. J., Clauson, H. B., Dahl-Jensen, D.,
Gundestrup, N. S., Hammer, C. U., Hvidberg, C. S., Steffensen, J. P.,
Sveinbjornsdottir, A. E., Jouzel, J., and G. Bond. 1993. Evidence for
general instability in past climate from a 250-kyr ice-core
record. Nature, 364:218-220.

Johnsen, S.J., Clausen, H.B., Dansgaard, W., Fuhrer, K., Gundestrup,
N., Hammer, C.U., Iversen, P., Jouzel, J., Stauffer, B. and
Steffensen, J.P. - Irregular glacial interstadials recorded in a new
Greenland ice core - Nature 359, 311-313, 1992.

Raynaud, D., Chappellaz, J., Barnola, J.M., Korotkevich, Y.S. and
Lorius, C. - Climatic and CH4-cycle implications of
glacial-interglacial CH4 change in the Vostok ice core - Nature 333,
655-657, 1988.
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-01-15



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