Greenland Summit 2013 Firn Air Results
This data set contains measurements of 14C in CO2, CO and CH4 in firn air sampled at Greenland Summit. The main feature in the Δ14C of CO2 data is an increase with depth that reflects a smoothed atmospheric Δ14C of CO2 history. The highest Δ14C of CO2 value at 80.06 m sampling depth approximately co...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Arctic Data Center
2016
|
Subjects: | |
Online Access: | https://doi.org/10.18739/A2XG24 |
id |
dataone:doi:10.18739/A2XG24 |
---|---|
record_format |
openpolar |
spelling |
dataone:doi:10.18739/A2XG24 2024-10-03T18:46:06+00:00 Greenland Summit 2013 Firn Air Results Vasilii Petrenko Jeffrey Severinghaus Edward Brook Greenland Summit ENVELOPE(-38.58052,-38.58052,72.66125,72.66125) BEGINDATE: 2013-05-15T00:00:00Z ENDDATE: 2015-07-01T00:00:00Z 2016-11-05T00:00:00Z https://doi.org/10.18739/A2XG24 unknown Arctic Data Center carbon-14 ice core Greenland Summit firn firn air carbon monoxide methane carbon dioxide cosmogenic air content Dataset 2016 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2XG24 2024-10-03T18:10:52Z This data set contains measurements of 14C in CO2, CO and CH4 in firn air sampled at Greenland Summit. The main feature in the Δ14C of CO2 data is an increase with depth that reflects a smoothed atmospheric Δ14C of CO2 history. The highest Δ14C of CO2 value at 80.06 m sampling depth approximately coincides with the atmospheric 14C “bomb peak”, with signal smoothing from firn gas diffusion, as for other samples. The concentration of 14C of CO shows relatively little change in the upper part of the firn (0 - 68 m), and increases strongly in the lock-in zone (68 - 80 m). This increase is driven by the accumulation of in situ cosmogenic 14CO in air in the firn lock-in zone. 14C of CH4 also shows relatively little change in the upper part of the firn (0 - 68m), reflecting relatively stable 14C of CH4 values in the atmosphere in the decade preceding sampling. 14C of CH4 declines with depth in the firn lock-in zone, reflecting lower 14C of CH4 values in the atmosphere going further back in time. This decline is mainly caused by lower 14CH4 emissions from nuclear power plants further back in time. Dataset Greenland ice core Arctic Data Center (via DataONE) Bomb Peak ENVELOPE(169.250,169.250,-77.533,-77.533) Greenland ENVELOPE(-38.58052,-38.58052,72.66125,72.66125) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
carbon-14 ice core Greenland Summit firn firn air carbon monoxide methane carbon dioxide cosmogenic air content |
spellingShingle |
carbon-14 ice core Greenland Summit firn firn air carbon monoxide methane carbon dioxide cosmogenic air content Vasilii Petrenko Jeffrey Severinghaus Edward Brook Greenland Summit 2013 Firn Air Results |
topic_facet |
carbon-14 ice core Greenland Summit firn firn air carbon monoxide methane carbon dioxide cosmogenic air content |
description |
This data set contains measurements of 14C in CO2, CO and CH4 in firn air sampled at Greenland Summit. The main feature in the Δ14C of CO2 data is an increase with depth that reflects a smoothed atmospheric Δ14C of CO2 history. The highest Δ14C of CO2 value at 80.06 m sampling depth approximately coincides with the atmospheric 14C “bomb peak”, with signal smoothing from firn gas diffusion, as for other samples. The concentration of 14C of CO shows relatively little change in the upper part of the firn (0 - 68 m), and increases strongly in the lock-in zone (68 - 80 m). This increase is driven by the accumulation of in situ cosmogenic 14CO in air in the firn lock-in zone. 14C of CH4 also shows relatively little change in the upper part of the firn (0 - 68m), reflecting relatively stable 14C of CH4 values in the atmosphere in the decade preceding sampling. 14C of CH4 declines with depth in the firn lock-in zone, reflecting lower 14C of CH4 values in the atmosphere going further back in time. This decline is mainly caused by lower 14CH4 emissions from nuclear power plants further back in time. |
format |
Dataset |
author |
Vasilii Petrenko Jeffrey Severinghaus Edward Brook |
author_facet |
Vasilii Petrenko Jeffrey Severinghaus Edward Brook |
author_sort |
Vasilii Petrenko |
title |
Greenland Summit 2013 Firn Air Results |
title_short |
Greenland Summit 2013 Firn Air Results |
title_full |
Greenland Summit 2013 Firn Air Results |
title_fullStr |
Greenland Summit 2013 Firn Air Results |
title_full_unstemmed |
Greenland Summit 2013 Firn Air Results |
title_sort |
greenland summit 2013 firn air results |
publisher |
Arctic Data Center |
publishDate |
2016 |
url |
https://doi.org/10.18739/A2XG24 |
op_coverage |
Greenland Summit ENVELOPE(-38.58052,-38.58052,72.66125,72.66125) BEGINDATE: 2013-05-15T00:00:00Z ENDDATE: 2015-07-01T00:00:00Z |
long_lat |
ENVELOPE(169.250,169.250,-77.533,-77.533) ENVELOPE(-38.58052,-38.58052,72.66125,72.66125) |
geographic |
Bomb Peak Greenland |
geographic_facet |
Bomb Peak Greenland |
genre |
Greenland ice core |
genre_facet |
Greenland ice core |
op_doi |
https://doi.org/10.18739/A2XG24 |
_version_ |
1811924431032811520 |