Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP

New measurements of atmospheric greenhouse gas concentrations in ice from Law Dome, Antarctica reproduce published Law Dome CO2 and CH4 records, extend them back to 2000 years BP, and include N2O. They have very high air age resolution, data density and measurement precision. Firn air measurements s...

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Bibliographic Details
Main Authors: C MacFarling Meure, D Etheridge, C Trudinger, P Steele, R Langenfelds, T van Ommen, A Smith, J Elkins
Format: Article in Journal/Newspaper
Language:unknown
Published: 2006
Subjects:
Online Access:http://hdl.handle.net/10779/DRO/DU:27634095.v1
https://figshare.com/articles/journal_contribution/Law_Dome_CO_sub_2_sub_CH_sub_4_sub_and_N_sub_2_sub_O_ice_core_records_extended_to_2000_years_BP/27634095
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author C MacFarling Meure
D Etheridge
C Trudinger
P Steele
R Langenfelds
T van Ommen
A Smith
J Elkins
author_facet C MacFarling Meure
D Etheridge
C Trudinger
P Steele
R Langenfelds
T van Ommen
A Smith
J Elkins
author_sort C MacFarling Meure
collection Unknown
description New measurements of atmospheric greenhouse gas concentrations in ice from Law Dome, Antarctica reproduce published Law Dome CO2 and CH4 records, extend them back to 2000 years BP, and include N2O. They have very high air age resolution, data density and measurement precision. Firn air measurements span the past 65 years and overlap with the ice core and direct atmospheric observations. Major increases in CO2, CH4 and N2O concentrations during the past 200 years followed a period of relative stability beforehand. Decadal variations during the industrial period include the stabilization of CO2 and slowing of CH4 and N2O growth in the 1940s and 1950s. Variations of up to 10 ppm CO2, 40 ppb CH4 and 10 ppb N2O occurred throughout the preindustrial period. Methane concentrations grew by 100 ppb from AD 0 to 1800, possibly due to early anthropogenic emissions.
format Article in Journal/Newspaper
genre Antarc*
Antarctica
ice core
genre_facet Antarc*
Antarctica
ice core
geographic Law Dome
geographic_facet Law Dome
id ftdeakinunifig:oai:figshare.com:article/27634095
institution Open Polar
language unknown
long_lat ENVELOPE(112.833,112.833,-66.733,-66.733)
op_collection_id ftdeakinunifig
op_relation http://hdl.handle.net/10779/DRO/DU:27634095.v1
https://figshare.com/articles/journal_contribution/Law_Dome_CO_sub_2_sub_CH_sub_4_sub_and_N_sub_2_sub_O_ice_core_records_extended_to_2000_years_BP/27634095
op_rights All Rights Reserved
publishDate 2006
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spelling ftdeakinunifig:oai:figshare.com:article/27634095 2025-06-15T14:12:41+00:00 Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP C MacFarling Meure D Etheridge C Trudinger P Steele R Langenfelds T van Ommen A Smith J Elkins 2006-07-01T00:00:00Z http://hdl.handle.net/10779/DRO/DU:27634095.v1 https://figshare.com/articles/journal_contribution/Law_Dome_CO_sub_2_sub_CH_sub_4_sub_and_N_sub_2_sub_O_ice_core_records_extended_to_2000_years_BP/27634095 unknown http://hdl.handle.net/10779/DRO/DU:27634095.v1 https://figshare.com/articles/journal_contribution/Law_Dome_CO_sub_2_sub_CH_sub_4_sub_and_N_sub_2_sub_O_ice_core_records_extended_to_2000_years_BP/27634095 All Rights Reserved Earth sciences Geology Physical geography and environmental geoscience 13 Climate Action Text Journal contribution 2006 ftdeakinunifig 2025-05-22T07:10:52Z New measurements of atmospheric greenhouse gas concentrations in ice from Law Dome, Antarctica reproduce published Law Dome CO2 and CH4 records, extend them back to 2000 years BP, and include N2O. They have very high air age resolution, data density and measurement precision. Firn air measurements span the past 65 years and overlap with the ice core and direct atmospheric observations. Major increases in CO2, CH4 and N2O concentrations during the past 200 years followed a period of relative stability beforehand. Decadal variations during the industrial period include the stabilization of CO2 and slowing of CH4 and N2O growth in the 1940s and 1950s. Variations of up to 10 ppm CO2, 40 ppb CH4 and 10 ppb N2O occurred throughout the preindustrial period. Methane concentrations grew by 100 ppb from AD 0 to 1800, possibly due to early anthropogenic emissions. Article in Journal/Newspaper Antarc* Antarctica ice core Unknown Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733)
spellingShingle Earth sciences
Geology
Physical geography and environmental geoscience
13 Climate Action
C MacFarling Meure
D Etheridge
C Trudinger
P Steele
R Langenfelds
T van Ommen
A Smith
J Elkins
Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title_full Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title_fullStr Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title_full_unstemmed Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title_short Law Dome CO 2 , CH 4 and N 2 O ice core records extended to 2000 years BP
title_sort law dome co 2 , ch 4 and n 2 o ice core records extended to 2000 years bp
topic Earth sciences
Geology
Physical geography and environmental geoscience
13 Climate Action
topic_facet Earth sciences
Geology
Physical geography and environmental geoscience
13 Climate Action
url http://hdl.handle.net/10779/DRO/DU:27634095.v1
https://figshare.com/articles/journal_contribution/Law_Dome_CO_sub_2_sub_CH_sub_4_sub_and_N_sub_2_sub_O_ice_core_records_extended_to_2000_years_BP/27634095