noaa-icecore-12995
EDML-Talos Dome Antarctic Ice Core 38-115KYrBP CO2 Data
Bereiter, B.; Lüthi, D.; Siegrist, M.; Schüpbach, S.; Stocker, T.F.; Fischer, H.
EDML-Talos Dome Antarctic Ice Core 38-115KYrBP CO2 Data
2012-06-11
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/12995
Investigator
B.
Bereiter
Investigator
D.
Lüthi
Investigator
M.
Siegrist
Investigator
S.
Schüpbach
Investigator
T.F.
Stocker
Investigator
H.
Fischer
earth science
paleoclimate
ice cores
gas age,null,null,calendar year before present,null,ice cores,null,null,N,EDML1_Sc4 gas age
earth science
paleoclimate
climate forcing|ice cores
carbon dioxide,bulk atmosphere,one standard deviation,parts per million,null,climate forcing|ice cores,null,null,N,null
earth science
paleoclimate
ice cores
notes,null,null,null,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
depth,null,null,meter,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
gas age,null,null,calendar year before present,null,ice cores,null,null,N,TALDICE-1a gas age
earth science
paleoclimate
climate forcing|ice cores
carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,averaged,null,N,null
earth science
paleoclimate
ice core
atmospheric gas
geoscientificInformation
Meridional Overturning Circulation (MOC)
carbon cycle
114193 cal yr BP
34167 cal yr BP
Complete
-75
-72.8166
.07
159.1833
2315
2892
Continent
Antarctica
Talos Dome TALDICE>LATITUDE -72.8166>LONGITUDE 159.1833
Continent
Antarctica
EPICA Dronning Maud Land>LATITUDE -75>LONGITUDE .07
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Bereiter, B., D. Lüthi, M. Siegrist, S. Schüpbach, T.F. Stocker,
and H. Fischer. 2012.
Mode change of millennial CO2 variability during the last
glacial cycle associated with a bipolar marine carbon seesaw.
Proceedings of the National Academy of Sciences,
published ahead of print June 6, 2012,
doi:10.1073/pnas.1204069109
Important elements of natural climate variations during the last
ice age are abrupt temperature increases over Greenland and related
warming and cooling periods over Antarctica. Records from Antarctic
ice cores have shown that the global carbon cycle also plays a
role in these changes. The available data shows that atmospheric
CO2 follows closely temperatures reconstructed from Antarctic ice
cores during these variations. Here, we present new high-resolution
CO2 data from Antarctic ice cores, which cover the period between
115,000 and 38,000 y before present. Our measurements show that also
smaller Antarctic warming events have an imprint in CO2 concentrations.
Moreover, they indicate that during Marine Isotope Stage (MIS) 5,
the peak of millennial CO2 variations lags the onset of Dansgaard/
Oeschger warmings by 250 +/- 190 y. During MIS 3, this lag increases
significantly to 870 +/- 90 y. Considerations of the ocean circulation
suggest that the millennial variability associated with the Atlantic
Meridional Overturning Circulation (AMOC) undergoes a mode change
from MIS 5 to MIS 4 and 3. Ocean carbon inventory estimates imply
that during MIS 3 additional carbon is derived from an extended mass
of carbon-enriched Antarctic Bottom Water. The absence of such a
carbon-enriched water mass in the North Atlantic during MIS 5 can
explain the smaller amount of carbon released to the atmosphere
after the Antarctic temperature maximum and, hence, the shorter lag.
Our new data provides further constraints for transient coupled
carbon cycle-climate simulations during the entire last glacial cycle.
STUDY NOTES: High-resolution Carbon Dioxide (CO2) data from two Antarctic ice cores,
covering the period between 115,000 and 38,000 years before present.
EPICA Dronning Maud Land Ice Core: 75°00'S, 00°04'E, 2892 m elevation
TALDICE Talos Dome Ice Core: 72°49'S, 159°11'E, 2315 m elevation
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/edml-talos2012co2.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/edml-talos2012co2.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11