{"id":"https://openalex.org/W2136456633","doi":"https://doi.org/10.1017/s0033822200043368","title":"A New Method for Analyzing 14C of Methane in Ancient Air Extracted from Glacial Ice","display_name":"A New Method for Analyzing 14C of Methane in Ancient Air Extracted from Glacial Ice","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W2136456633","doi":"https://doi.org/10.1017/s0033822200043368","mag":"2136456633"},"language":"en","primary_location":{"id":"doi:10.1017/s0033822200043368","doi":"https://doi.org/10.1017/s0033822200043368","is_oa":true,"landing_page_url":"https://doi.org/10.1017/s0033822200043368","pdf_url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/5A44C1AC3987A8D7B44640FF770B587D/S0033822200043368a.pdf/div-class-title-a-new-method-for-analyzing-span-class-sup-14-span-c-of-methane-in-ancient-air-extracted-from-glacial-ice-div.pdf","source":{"id":"https://openalex.org/S35778795","display_name":"Radiocarbon","issn_l":"0033-8222","issn":["0033-8222","1945-5755"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-c","erih-plus","jufo-1","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Radiocarbon","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/5A44C1AC3987A8D7B44640FF770B587D/S0033822200043368a.pdf/div-class-title-a-new-method-for-analyzing-span-class-sup-14-span-c-of-methane-in-ancient-air-extracted-from-glacial-ice-div.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5026393193","display_name":"V. V. Petrenko","orcid":"https://orcid.org/0000-0002-0263-8759","observed_orcids":["https://orcid.org/0000-0002-0263-8759"]},"institutions":[{"id":"https://openalex.org/I150209017","display_name":"Scripps Institution of Oceanography","ror":"https://ror.org/04v7hvq31","country_code":"US","type":"facility","lineage":["https://openalex.org/I150209017","https://openalex.org/I36258959"]},{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Vasilii V Petrenko","raw_affiliation_strings":["Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA","institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039143543","display_name":"Andrew M. Smith II","orcid":"https://orcid.org/0000-0002-9193-2617","observed_orcids":["https://orcid.org/0000-0002-9193-2617","https://orcid.org/0000-0003-0580-4078"]},"institutions":[{"id":"https://openalex.org/I1334950195","display_name":"Australian Nuclear Science and Technology Organisation","ror":"https://ror.org/05j7fep28","country_code":"AU","type":"government","lineage":["https://openalex.org/I1334950195","https://openalex.org/I2801453606","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Andrew M Smith","raw_affiliation_strings":["Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia","institution_ids":["https://openalex.org/I1334950195"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028011467","display_name":"Gordon Brailsford","orcid":"https://orcid.org/0000-0003-1858-5097","observed_orcids":["https://orcid.org/0000-0003-1858-5097"]},"institutions":[{"id":"https://openalex.org/I45935490","display_name":"National Institute of Water and Atmospheric Research","ror":"https://ror.org/04hxcaz34","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4405259964","https://openalex.org/I45935490"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Gordon Brailsford","raw_affiliation_strings":["National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand","institution_ids":["https://openalex.org/I45935490"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039383880","display_name":"Katja Riedel","orcid":"https://orcid.org/0000-0002-3856-0754","observed_orcids":["https://orcid.org/0000-0002-3856-0754"]},"institutions":[{"id":"https://openalex.org/I45935490","display_name":"National Institute of Water and Atmospheric Research","ror":"https://ror.org/04hxcaz34","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4405259964","https://openalex.org/I45935490"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Katja Riedel","raw_affiliation_strings":["National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand","institution_ids":["https://openalex.org/I45935490"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064060376","display_name":"Quan Hua","orcid":"https://orcid.org/0000-0003-0179-8539","observed_orcids":["https://orcid.org/0000-0003-0179-8539"]},"institutions":[{"id":"https://openalex.org/I1334950195","display_name":"Australian Nuclear Science and Technology Organisation","ror":"https://ror.org/05j7fep28","country_code":"AU","type":"government","lineage":["https://openalex.org/I1334950195","https://openalex.org/I2801453606","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Quan Hua","raw_affiliation_strings":["Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia","institution_ids":["https://openalex.org/I1334950195"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110889364","display_name":"Dave C. Lowe","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I45935490","display_name":"National Institute of Water and Atmospheric Research","ror":"https://ror.org/04hxcaz34","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4405259964","https://openalex.org/I45935490"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Dave Lowe","raw_affiliation_strings":["National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand","institution_ids":["https://openalex.org/I45935490"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018427740","display_name":"Jeffrey P. Severinghaus","orcid":"https://orcid.org/0000-0001-8883-3119","observed_orcids":["https://orcid.org/0000-0001-8883-3119"]},"institutions":[{"id":"https://openalex.org/I150209017","display_name":"Scripps Institution of Oceanography","ror":"https://ror.org/04v7hvq31","country_code":"US","type":"facility","lineage":["https://openalex.org/I150209017","https://openalex.org/I36258959"]},{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jeffrey P Severinghaus","raw_affiliation_strings":["Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA","institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002151211","display_name":"Vladimir A. Levchenko","orcid":"https://orcid.org/0000-0002-3847-264X","observed_orcids":["https://orcid.org/0000-0002-3847-264X"]},"institutions":[{"id":"https://openalex.org/I1334950195","display_name":"Australian Nuclear Science and Technology Organisation","ror":"https://ror.org/05j7fep28","country_code":"AU","type":"government","lineage":["https://openalex.org/I1334950195","https://openalex.org/I2801453606","https://openalex.org/I4387156119"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Vladimir Levchenko","raw_affiliation_strings":["Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW 2234, Australia","institution_ids":["https://openalex.org/I1334950195"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050922112","display_name":"Tony M. Bromley","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I45935490","display_name":"National Institute of Water and Atmospheric Research","ror":"https://ror.org/04hxcaz34","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4405259964","https://openalex.org/I45935490"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Tony Bromley","raw_affiliation_strings":["National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand","institution_ids":["https://openalex.org/I45935490"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109563715","display_name":"Rowena Moss","orcid":"https://orcid.org/0000-0003-2900-071X","observed_orcids":["https://orcid.org/0000-0003-2900-071X"]},"institutions":[{"id":"https://openalex.org/I45935490","display_name":"National Institute of Water and Atmospheric Research","ror":"https://ror.org/04hxcaz34","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4405259964","https://openalex.org/I45935490"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Rowena Moss","raw_affiliation_strings":["National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Water and Atmospheric Research, Private Bag 14901, Wellington, New Zealand","institution_ids":["https://openalex.org/I45935490"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001429926","display_name":"Jens M\u00fchle","orcid":"https://orcid.org/0000-0001-9776-3642","observed_orcids":["https://orcid.org/0000-0001-9776-3642"]},"institutions":[{"id":"https://openalex.org/I150209017","display_name":"Scripps Institution of Oceanography","ror":"https://ror.org/04v7hvq31","country_code":"US","type":"facility","lineage":["https://openalex.org/I150209017","https://openalex.org/I36258959"]},{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jens M\u00fchle","raw_affiliation_strings":["Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Scripps Institution of Oceanography, University of California, San Diego, Mail Code 0244, 9500 Gilman Dr., La Jolla, California 92093, USA","institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065379127","display_name":"Edward J. Brook","orcid":"https://orcid.org/0000-0001-5438-0115","observed_orcids":["https://orcid.org/0000-0001-5438-0115"]},"institutions":[{"id":"https://openalex.org/I131249849","display_name":"Oregon State University","ror":"https://ror.org/00ysfqy60","country_code":"US","type":"education","lineage":["https://openalex.org/I131249849"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Edward J Brook","raw_affiliation_strings":["Department of Geosciences, Oregon State University, Corvallis, Oregon 97331, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Geosciences, Oregon State University, Corvallis, Oregon 97331, USA","institution_ids":["https://openalex.org/I131249849"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5026393193"],"corresponding_institution_ids":["https://openalex.org/I150209017","https://openalex.org/I36258959"],"apc_list":{"value":2487,"currency":"USD","value_usd":2487},"apc_paid":null,"fwci":1.6223,"has_fulltext":true,"cited_by_count":22,"citation_normalized_percentile":{"value":0.87979439,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"50","issue":"1","first_page":"53","last_page":"73"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10087","display_name":"Archaeology and ancient environmental studies","score":0.8417999744415283,"subfield":{"id":"https://openalex.org/subfields/3302","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10087","display_name":"Archaeology and ancient environmental studies","score":0.8417999744415283,"subfield":{"id":"https://openalex.org/subfields/3302","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10017","display_name":"Geology and Paleoclimatology Research","score":0.11339999735355377,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11588","display_name":"Atmospheric and Environmental Gas Dynamics","score":0.013500000350177288,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/glacier-ice","display_name":"glacier ice","score":0.9150000214576721},{"id":"https://openalex.org/keywords/carbon-contamination","display_name":"carbon contamination","score":0.5789999961853027},{"id":"https://openalex.org/keywords/co-removal","display_name":"carbon monoxide removal","score":0.9139999747276306},{"id":"https://openalex.org/keywords/iron-based-catalysts","display_name":"iron catalysts","score":0.6340000033378601},{"id":"https://openalex.org/keywords/graphitization","display_name":"graphitization","score":0.9670000076293945},{"id":"https://openalex.org/keywords/procedural-blanks","display_name":"procedural blanks","score":0.7540000081062317},{"id":"https://openalex.org/keywords/late-glacial","display_name":"Late Glacial","score":0.421999990940094},{"id":"https://openalex.org/keywords/holocene","display_name":"Holocene","score":0.36399999260902405}],"concepts":[{"id":"https://openalex.org/C516920438","wikidata":"https://www.wikidata.org/wiki/Q37129","display_name":"Methane","level":2,"score":0.6098974943161011},{"id":"https://openalex.org/C140205800","wikidata":"https://www.wikidata.org/wiki/Q5860","display_name":"Carbon fibers","level":3,"score":0.5686768889427185},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.5535550117492676},{"id":"https://openalex.org/C40875361","wikidata":"https://www.wikidata.org/wiki/Q2356542","display_name":"Reagent","level":2,"score":0.500939130783081},{"id":"https://openalex.org/C56819118","wikidata":"https://www.wikidata.org/wiki/Q27084","display_name":"Parts-per notation","level":2,"score":0.4840397238731384},{"id":"https://openalex.org/C512735826","wikidata":"https://www.wikidata.org/wiki/Q2025","display_name":"Carbon monoxide","level":3,"score":0.4689229130744934},{"id":"https://openalex.org/C530467964","wikidata":"https://www.wikidata.org/wiki/Q1997","display_name":"Carbon dioxide","level":2,"score":0.4460170269012451},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.4399193525314331},{"id":"https://openalex.org/C161790260","wikidata":"https://www.wikidata.org/wiki/Q82264","display_name":"Catalysis","level":2,"score":0.4075482487678528},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.34431254863739014},{"id":"https://openalex.org/C107872376","wikidata":"https://www.wikidata.org/wiki/Q321355","display_name":"Environmental chemistry","level":1,"score":0.3261970281600952},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.22054025530815125},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.10442572832107544},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C104779481","wikidata":"https://www.wikidata.org/wiki/Q50707","display_name":"Composite number","level":2,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1017/s0033822200043368","doi":"https://doi.org/10.1017/s0033822200043368","is_oa":true,"landing_page_url":"https://doi.org/10.1017/s0033822200043368","pdf_url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/5A44C1AC3987A8D7B44640FF770B587D/S0033822200043368a.pdf/div-class-title-a-new-method-for-analyzing-span-class-sup-14-span-c-of-methane-in-ancient-air-extracted-from-glacial-ice-div.pdf","source":{"id":"https://openalex.org/S35778795","display_name":"Radiocarbon","issn_l":"0033-8222","issn":["0033-8222","1945-5755"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-c","erih-plus","jufo-1","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Radiocarbon","raw_type":"journal-article"},{"id":"pmh:oai:repository.arizona.edu:10150/653797","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/10150/653797","pdf_url":null,"source":{"id":"https://openalex.org/S4306400271","display_name":"UA Campus Repository (The University of Arizona)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I138006243","host_organization_name":"University of Arizona","host_organization_lineage":["https://openalex.org/I138006243"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"73","raw_type":"Article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.540.8479","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.540.8479","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://icebubbles.ucsd.edu/Publications/petrenko_radiocarbon.pdf","raw_type":"text"},{"id":"pmh:oai:apo.ansto.gov.au:10238/2269","doi":null,"is_oa":false,"landing_page_url":"http://apo.ansto.gov.au/dspace/handle/10238/2269","pdf_url":null,"source":{"id":"https://openalex.org/S4306401054","display_name":"The Australian Nuclear Science and Technology Organisation Institutional Repository (The Australian Nuclear Science and Technology Organisation)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1334950195","host_organization_name":"Australian Nuclear Science and Technology Organisation","host_organization_lineage":["https://openalex.org/I1334950195"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Journal Article"}],"best_oa_location":{"id":"doi:10.1017/s0033822200043368","doi":"https://doi.org/10.1017/s0033822200043368","is_oa":true,"landing_page_url":"https://doi.org/10.1017/s0033822200043368","pdf_url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/5A44C1AC3987A8D7B44640FF770B587D/S0033822200043368a.pdf/div-class-title-a-new-method-for-analyzing-span-class-sup-14-span-c-of-methane-in-ancient-air-extracted-from-glacial-ice-div.pdf","source":{"id":"https://openalex.org/S35778795","display_name":"Radiocarbon","issn_l":"0033-8222","issn":["0033-8222","1945-5755"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-c","erih-plus","jufo-1","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Radiocarbon","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.75,"id":"https://metadata.un.org/sdg/13","display_name":"Climate action"}],"study_designs":[],"awards":[{"id":"https://openalex.org/G3943229941","display_name":"Collaborative Research:  Determining Methane Sources During the Last Deglaciation with Large-Volume Air Samples from Pakitsoq, West Greenland","funder_award_id":"0221470","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G4730582842","display_name":"Collaborative Research:  Determining Methane Sources During the Last Deglaciation with Large-Volume Air Samples from Pakitsoq, West Greenland","funder_award_id":"0221410","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320309913","display_name":"Washington State University","ror":"https://ror.org/05dk0ce17"},{"id":"https://openalex.org/F4320310340","display_name":"Australian Nuclear Science and Technology Organisation","ror":"https://ror.org/05j7fep28"},{"id":"https://openalex.org/F4320332688","display_name":"University of California, Irvine","ror":"https://ror.org/04gyf1771"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2136456633.pdf","grobid_xml":"https://content.openalex.org/works/W2136456633.grobid-xml"},"referenced_works_count":50,"referenced_works":["https://openalex.org/W1480862240","https://openalex.org/W1520428197","https://openalex.org/W1575579655","https://openalex.org/W1587103052","https://openalex.org/W1601753125","https://openalex.org/W1849106944","https://openalex.org/W1853987269","https://openalex.org/W1965274647","https://openalex.org/W1965288265","https://openalex.org/W1966324506","https://openalex.org/W1967883406","https://openalex.org/W1978300494","https://openalex.org/W1983774751","https://openalex.org/W1987030474","https://openalex.org/W1994100601","https://openalex.org/W1998936060","https://openalex.org/W2000103641","https://openalex.org/W2001269190","https://openalex.org/W2003976276","https://openalex.org/W2007301639","https://openalex.org/W2010544221","https://openalex.org/W2013886504","https://openalex.org/W2036501275","https://openalex.org/W2041379113","https://openalex.org/W2044159019","https://openalex.org/W2045780987","https://openalex.org/W2052736701","https://openalex.org/W2065894625","https://openalex.org/W2068589879","https://openalex.org/W2070011148","https://openalex.org/W2070986621","https://openalex.org/W2073826121","https://openalex.org/W2076389197","https://openalex.org/W2077400329","https://openalex.org/W2079374849","https://openalex.org/W2099743344","https://openalex.org/W2104566388","https://openalex.org/W2110795813","https://openalex.org/W2112656901","https://openalex.org/W2117354695","https://openalex.org/W2125916030","https://openalex.org/W2129001402","https://openalex.org/W2142386151","https://openalex.org/W2168755153","https://openalex.org/W2260541962","https://openalex.org/W2339678976","https://openalex.org/W2939474406","https://openalex.org/W4244989766","https://openalex.org/W4253812143","https://openalex.org/W4294555410"],"related_works":["https://openalex.org/W2013886504","https://openalex.org/W1542768368","https://openalex.org/W4399254694","https://openalex.org/W7074718953","https://openalex.org/W3169599151","https://openalex.org/W3156842745","https://openalex.org/W4401895172","https://openalex.org/W3165895572","https://openalex.org/W2963020714","https://openalex.org/W2906235276"],"abstract_inverted_index":{"We":[0],"present":[1],"a":[2,90,212],"new":[3,91,123,213],"method":[4],"developed":[5],"for":[6,99,110,163,174,189,222,236],"measuring":[7],"radiocarbon":[8],"of":[9,52,59,89,105,117,143,166,181,185,211,225],"methane":[10],"(14CH4)":[11],"in":[12,69,121],"ancient":[13,238],"air":[14,71,177,239],"samples":[15,54,72,178,194,240],"extracted":[16],"from":[17],"glacial":[18],"ice":[19],"and":[20,48,102,114,135,198,208],"dating":[21],"11,000\u201315,000":[22],"calendar":[23],"years":[24],"before":[25],"present.":[26],"The":[27,112,141,159,231],"small":[28,190],"size":[29],"(\u223c20":[30],"\u03bcg":[31,134,192],"CH4":[32,35,92,100,124],"carbon),":[33],"low":[34,49],"concentrations":[36,46],"([CH4],":[37],"400\u2013800":[38],"parts":[39],"per":[40],"billion":[41],"[ppb]),":[42],"high":[43,57],"carbon":[44,119,147],"monoxide":[45],"([CO]),":[47],"14C":[50,80,115,220],"activity":[51,116],"the":[53,70,77,87,103,122,150,186,209,237],"created":[55],"unusually":[56],"risks":[58],"contamination":[60],"by":[61],"extraneous":[62,118],"carbon.":[63],"Up":[64],"to":[65,129,156],"2500":[66],"ppb":[67],"CO":[68],"was":[73,169,195],"quantitatively":[74],"removed":[75],"using":[76],"Sofnocat":[78],"reagent.":[79],"procedural":[81,161],"blanks":[82],"were":[83,127],"greatly":[84,196],"reduced":[85,155,197],"through":[86,202],"construction":[88],"conversion":[93,125],"line":[94,126],"utilizing":[95],"platinized":[96],"quartz":[97],"wool":[98],"combustion":[101],"use":[104,210],"an":[106],"ultra-high-purity":[107],"iron":[108,214],"catalyst":[109,215],"graphitization.":[111],"amount":[113,142],"added":[120,148],"determined":[128],"be":[130],"0.23":[131],"\u00b1":[132,137,171],"0.16":[133],"23.57":[136],"16.22":[138],"pMC,":[139],"respectively.":[140],"modern":[144],"(100":[145],"pMC)":[146],"during":[149],"graphitization":[151,187],"step":[152,224],"has":[153],"been":[154,229],"0.03":[157],"\u03bcg.":[158],"overall":[160,233],"blank":[162],"all":[164],"stages":[165],"sample":[167,226],"handling":[168,227],"0.75":[170],"0.38":[172],"pMC":[173],"\u223c20-\u03bcg,":[175],"14C-free":[176],"with":[179,216],"[CH4]":[180],"500":[182],"ppb.":[183],"Duration":[184],"reactions":[188],"(<25":[191],"C)":[193],"reaction":[199],"yields":[200],"improved":[201],"more":[203],"efficient":[204],"water":[205],"vapor":[206],"trapping":[207],"higher":[217],"surface":[218],"area.":[219],"corrections":[221],"each":[223],"have":[228],"determined.":[230],"resulting":[232],"14CH4":[234],"uncertainties":[235],"are":[241],"\u223c1.0":[242],"pMC.":[243]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":3},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
