Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka)
Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 ch...
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Online Access: | https://researchdata.ands.org.au/byrd-siple-dome-21-ka/700674 https://doi.org/10.4225/15/59c345b7357a5 https://data.aad.gov.au/metadata/records/Byrd-SipleDome-CO2-GICC05 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::700674 2023-05-15T13:46:58+02:00 Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) PEDRO, JOEL (hasPrincipalInvestigator) PEDRO, JOEL (processor) VAN OMMEN, TAS (hasPrincipalInvestigator) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-80.0167; southlimit=-80.0167; westlimit=119.5167; eastLimit=119.5167; projection=WGS84 Spatial: northlimit=-81.6667; southlimit=-81.6667; westlimit=148.8167; eastLimit=148.8167; projection=WGS84 Temporal: From 2012-07-22 to 2012-07-22 https://researchdata.ands.org.au/byrd-siple-dome-21-ka/700674 https://doi.org/10.4225/15/59c345b7357a5 https://data.aad.gov.au/metadata/records/Byrd-SipleDome-CO2-GICC05 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/byrd-siple-dome-21-ka/700674 503499c2-0961-4b49-8b4c-7a7248dc4277 doi:10.4225/15/59c345b7357a5 Byrd-SipleDome-CO2-GICC05 https://data.aad.gov.au/metadata/records/Byrd-SipleDome-CO2-GICC05 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre climatologyMeteorologyAtmosphere CARBON DIOXIDE EARTH SCIENCE CLIMATE INDICATORS PALEOCLIMATE INDICATORS ICE CORE RECORDS Ice Core Drilling LABORATORY CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/59c345b7357a5 2020-01-05T21:17:57Z Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 degrees C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags. This work was done as part of project AAS 757. DESCRIPTION The regional Antarctic temperature proxy data series is avaliable elsewhere: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/antarctica2011iso.txt The locations and original references for the CO2 data and transfers to the GICC05 timescale are as follows: Byrd Location: 80 degrees 01'S 119 degrees 31'W Elevation: 1530 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: (1) Neftel, A., Oeschger, H., Staffelbach, T., and Nature, 331, 609-11, doi:10.1038/331609a0, 1988. (2) Staffelbach, T., Stauffer, B., Sigg, A., and Oeschger, H.: CO2 measurements from polar ice cores - More data from different sites, Tellus B, 43, 91-6, doi:10.1034/j.1600-0889.1991.t01-1- 00003.x, 1991. Siple Dome Location: 81 degrees 40'S 148 degrees 49'W Elevation: 621 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: Ahn, J., Wahlen, M., Deck, B. L., Brook, E. J., Mayewski, P. A., Taylor, K. C., and White, J. W. C.: A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core, J. Geophys. Res., 109, D13305, doi:10.1029/2003JD004415, 2004. Dataset Antarc* Antarctic Antarctica ice core Research Data Australia (Australian National Data Service - ANDS) Antarctic Byrd Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) Siple Dome ENVELOPE(-148.833,-148.833,-81.667,-81.667) ENVELOPE(119.5167,119.5167,-80.0167,-80.0167) ENVELOPE(148.8167,148.8167,-81.6667,-81.6667) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
climatologyMeteorologyAtmosphere CARBON DIOXIDE EARTH SCIENCE CLIMATE INDICATORS PALEOCLIMATE INDICATORS ICE CORE RECORDS Ice Core Drilling LABORATORY CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
climatologyMeteorologyAtmosphere CARBON DIOXIDE EARTH SCIENCE CLIMATE INDICATORS PALEOCLIMATE INDICATORS ICE CORE RECORDS Ice Core Drilling LABORATORY CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
topic_facet |
climatologyMeteorologyAtmosphere CARBON DIOXIDE EARTH SCIENCE CLIMATE INDICATORS PALEOCLIMATE INDICATORS ICE CORE RECORDS Ice Core Drilling LABORATORY CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 degrees C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags. This work was done as part of project AAS 757. DESCRIPTION The regional Antarctic temperature proxy data series is avaliable elsewhere: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/antarctica2011iso.txt The locations and original references for the CO2 data and transfers to the GICC05 timescale are as follows: Byrd Location: 80 degrees 01'S 119 degrees 31'W Elevation: 1530 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: (1) Neftel, A., Oeschger, H., Staffelbach, T., and Nature, 331, 609-11, doi:10.1038/331609a0, 1988. (2) Staffelbach, T., Stauffer, B., Sigg, A., and Oeschger, H.: CO2 measurements from polar ice cores - More data from different sites, Tellus B, 43, 91-6, doi:10.1034/j.1600-0889.1991.t01-1- 00003.x, 1991. Siple Dome Location: 81 degrees 40'S 148 degrees 49'W Elevation: 621 m asl Reference for transfer to GICC05 timescale: Pedro et al., Clim. Past. 8, 2012. Reference for CO2 data: Ahn, J., Wahlen, M., Deck, B. L., Brook, E. J., Mayewski, P. A., Taylor, K. C., and White, J. W. C.: A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core, J. Geophys. Res., 109, D13305, doi:10.1029/2003JD004415, 2004. |
author2 |
PEDRO, JOEL (hasPrincipalInvestigator) PEDRO, JOEL (processor) VAN OMMEN, TAS (hasPrincipalInvestigator) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
title_short |
Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
title_full |
Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
title_fullStr |
Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
title_full_unstemmed |
Byrd and Siple Dome CO2 data on the GICC05 timescale (9--21 ka) |
title_sort |
byrd and siple dome co2 data on the gicc05 timescale (9--21 ka) |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/byrd-siple-dome-21-ka/700674 https://doi.org/10.4225/15/59c345b7357a5 https://data.aad.gov.au/metadata/records/Byrd-SipleDome-CO2-GICC05 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-80.0167; southlimit=-80.0167; westlimit=119.5167; eastLimit=119.5167; projection=WGS84 Spatial: northlimit=-81.6667; southlimit=-81.6667; westlimit=148.8167; eastLimit=148.8167; projection=WGS84 Temporal: From 2012-07-22 to 2012-07-22 |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-148.833,-148.833,-81.667,-81.667) ENVELOPE(119.5167,119.5167,-80.0167,-80.0167) ENVELOPE(148.8167,148.8167,-81.6667,-81.6667) |
geographic |
Antarctic Byrd Siple Siple Dome |
geographic_facet |
Antarctic Byrd Siple Siple Dome |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/byrd-siple-dome-21-ka/700674 503499c2-0961-4b49-8b4c-7a7248dc4277 doi:10.4225/15/59c345b7357a5 Byrd-SipleDome-CO2-GICC05 https://data.aad.gov.au/metadata/records/Byrd-SipleDome-CO2-GICC05 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/59c345b7357a5 |
_version_ |
1766245967822061568 |