MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf
The origin of the late pre-industrial Holocene (LPIH) increase in atmospheric methane concentrations has been much debated. Hypotheses invoking changes in solely anthropogenic sources or solely natural sources have been proposed to explain the increase in concentrations. Here two high-resolution, hi...
Main Authors: | , , , , |
---|---|
Language: | unknown |
Subjects: | |
Online Access: | https://ir.library.oregonstate.edu/concern/articles/qj72p934z |
id |
ftoregonstate:ir.library.oregonstate.edu:qj72p934z |
---|---|
record_format |
openpolar |
spelling |
ftoregonstate:ir.library.oregonstate.edu:qj72p934z 2024-09-15T17:44:20+00:00 MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf Mitchell, Logan Brook, Edward J. Lee, James E. Buizert, Christo Sowers, Todd https://ir.library.oregonstate.edu/concern/articles/qj72p934z unknown https://ir.library.oregonstate.edu/concern/articles/qj72p934z Copyright Not Evaluated ftoregonstate 2024-07-22T18:06:03Z The origin of the late pre-industrial Holocene (LPIH) increase in atmospheric methane concentrations has been much debated. Hypotheses invoking changes in solely anthropogenic sources or solely natural sources have been proposed to explain the increase in concentrations. Here two high-resolution, high-precision ice core methane concentration records from Greenland and Antarctica are presented and are used to construct a high-resolution record of the methane inter-polar difference (IPD). The IPD record constrains the latitudinal distribution of emissions and shows that LPIH emissions increased primarily in the tropics with secondary increases in the subtropical northern hemisphere. Anthropogenic and natural sources have different latitudinal characteristics, which are exploited to demonstrate that both anthropogenic and natural sources are needed to explain LPIH methane concentration changes. Other/Unknown Material Antarc* Antarctica Greenland ice core ScholarsArchive@OSU (Oregon State University) |
institution |
Open Polar |
collection |
ScholarsArchive@OSU (Oregon State University) |
op_collection_id |
ftoregonstate |
language |
unknown |
description |
The origin of the late pre-industrial Holocene (LPIH) increase in atmospheric methane concentrations has been much debated. Hypotheses invoking changes in solely anthropogenic sources or solely natural sources have been proposed to explain the increase in concentrations. Here two high-resolution, high-precision ice core methane concentration records from Greenland and Antarctica are presented and are used to construct a high-resolution record of the methane inter-polar difference (IPD). The IPD record constrains the latitudinal distribution of emissions and shows that LPIH emissions increased primarily in the tropics with secondary increases in the subtropical northern hemisphere. Anthropogenic and natural sources have different latitudinal characteristics, which are exploited to demonstrate that both anthropogenic and natural sources are needed to explain LPIH methane concentration changes. |
author |
Mitchell, Logan Brook, Edward J. Lee, James E. Buizert, Christo Sowers, Todd |
spellingShingle |
Mitchell, Logan Brook, Edward J. Lee, James E. Buizert, Christo Sowers, Todd MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
author_facet |
Mitchell, Logan Brook, Edward J. Lee, James E. Buizert, Christo Sowers, Todd |
author_sort |
Mitchell, Logan |
title |
MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
title_short |
MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
title_full |
MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
title_fullStr |
MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
title_full_unstemmed |
MitchellLoganCEOASConstraintsLateHoloceneSupplementaryMaterials.pdf |
title_sort |
mitchellloganceoasconstraintslateholocenesupplementarymaterials.pdf |
url |
https://ir.library.oregonstate.edu/concern/articles/qj72p934z |
genre |
Antarc* Antarctica Greenland ice core |
genre_facet |
Antarc* Antarctica Greenland ice core |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/qj72p934z |
op_rights |
Copyright Not Evaluated |
_version_ |
1810491785279963136 |