Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania
The Antarctic CH4 records presented here are derived from three ice cores obtained at Law Dome, East Antarctica (66°44'S, 112°50'E, 1390 meters above mean sea level). Law Dome has many qualities of an ideal ice core site for the reconstruction of past concentrations of atmospheric gases; t...
Main Authors: | , , , |
---|---|
Language: | unknown |
Published: |
2022
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1394397 https://www.osti.gov/biblio/1394397 https://doi.org/10.3334/CDIAC/ATG.030 |
id |
ftosti:oai:osti.gov:1394397 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1394397 2023-07-30T03:57:42+02:00 Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania Etheridge, D. M. Steele, L. P. Francey, R. J. Langenfelds, R. J. 2022-10-27 application/pdf http://www.osti.gov/servlets/purl/1394397 https://www.osti.gov/biblio/1394397 https://doi.org/10.3334/CDIAC/ATG.030 unknown http://www.osti.gov/servlets/purl/1394397 https://www.osti.gov/biblio/1394397 https://doi.org/10.3334/CDIAC/ATG.030 doi:10.3334/CDIAC/ATG.030 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.3334/CDIAC/ATG.030 2023-07-11T09:21:19Z The Antarctic CH4 records presented here are derived from three ice cores obtained at Law Dome, East Antarctica (66°44'S, 112°50'E, 1390 meters above mean sea level). Law Dome has many qualities of an ideal ice core site for the reconstruction of past concentrations of atmospheric gases; these qualities include: negligible melting of the ice sheet surface, low concentrations of impurities, regular stratigraphic layering undisturbed by wind stress at the surface or differential ice flow at depth, and a high snow accumulation rate. Further details on the site, drilling, and cores are provided by Etheridge et al. (1998), Etheridge et al. (1996), Etheridge and Wookey (1989), and Morgan et al. (1997). The two Greenland ice cores are from the Summit region (72°34' N, 37°37' W, 3200 meters above mean sea level). Lower snow accumulation rate there results in lower air-age resolution, and measurements presented here cover only the pre-industrial period (until 1885). More details about these measurements are presented in Etheridge et al. (1998). Additionally, this site contains firn data from Core DE08-2, and archived air samples from Cape Grim, Tasmania, for comparison.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/atm_meth/lawdome_meth.html Other/Unknown Material Antarc* Antarctic Antarctica East Antarctica Greenland Greenland ice cores ice core Ice Sheet SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic East Antarctica Greenland Grim ENVELOPE(-64.486,-64.486,-65.379,-65.379) Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) The Antarctic |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Etheridge, D. M. Steele, L. P. Francey, R. J. Langenfelds, R. J. Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
The Antarctic CH4 records presented here are derived from three ice cores obtained at Law Dome, East Antarctica (66°44'S, 112°50'E, 1390 meters above mean sea level). Law Dome has many qualities of an ideal ice core site for the reconstruction of past concentrations of atmospheric gases; these qualities include: negligible melting of the ice sheet surface, low concentrations of impurities, regular stratigraphic layering undisturbed by wind stress at the surface or differential ice flow at depth, and a high snow accumulation rate. Further details on the site, drilling, and cores are provided by Etheridge et al. (1998), Etheridge et al. (1996), Etheridge and Wookey (1989), and Morgan et al. (1997). The two Greenland ice cores are from the Summit region (72°34' N, 37°37' W, 3200 meters above mean sea level). Lower snow accumulation rate there results in lower air-age resolution, and measurements presented here cover only the pre-industrial period (until 1885). More details about these measurements are presented in Etheridge et al. (1998). Additionally, this site contains firn data from Core DE08-2, and archived air samples from Cape Grim, Tasmania, for comparison.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/atm_meth/lawdome_meth.html |
author |
Etheridge, D. M. Steele, L. P. Francey, R. J. Langenfelds, R. J. |
author_facet |
Etheridge, D. M. Steele, L. P. Francey, R. J. Langenfelds, R. J. |
author_sort |
Etheridge, D. M. |
title |
Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
title_short |
Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
title_full |
Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
title_fullStr |
Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
title_full_unstemmed |
Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania |
title_sort |
historic ch4 records from antarctic and greenland ice cores, antarctic firn data, and archived air samples from cape grim, tasmania |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1394397 https://www.osti.gov/biblio/1394397 https://doi.org/10.3334/CDIAC/ATG.030 |
long_lat |
ENVELOPE(-64.486,-64.486,-65.379,-65.379) ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Antarctic East Antarctica Greenland Grim Law Dome The Antarctic |
geographic_facet |
Antarctic East Antarctica Greenland Grim Law Dome The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Greenland Greenland ice cores ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Greenland Greenland ice cores ice core Ice Sheet |
op_relation |
http://www.osti.gov/servlets/purl/1394397 https://www.osti.gov/biblio/1394397 https://doi.org/10.3334/CDIAC/ATG.030 doi:10.3334/CDIAC/ATG.030 |
op_doi |
https://doi.org/10.3334/CDIAC/ATG.030 |
_version_ |
1772818858786160640 |