noaa-icecore-9893
Talos Dome and EDML Ice Core 140KYr N2O and CH4 Data
Schilt, A.; Baumgartner, S.M.; Schwander, J.; Buiron, D.; Capron, E.; Chappellaz, J.A.; Loulergue, L.; Schüpbach, S.; Spahni, R.; Fischer, H.; Stocker, T.F.
Talos Dome and EDML Ice Core 140KYr N2O and CH4 Data
2010-11-25
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/9893
Investigator
A.
Schilt
Investigator
S.M.
Baumgartner
Investigator
J.
Schwander
Investigator
D.
Buiron
Investigator
E.
Capron
Investigator
J.A.
Chappellaz
Investigator
L.
Loulergue
Investigator
S.
Schüpbach
Investigator
R.
Spahni
Investigator
H.
Fischer
Investigator
T.F.
Stocker
earth science
paleoclimate
ice cores
notes,null,null,null,null,ice cores,null,null,N,artefact flagging
earth science
paleoclimate
climate forcing|ice cores
nitrous oxide,bulk atmosphere,one standard deviation,parts per billion,null,climate forcing|ice cores,null,gas chromatography - electron capture detection|wet extraction,N,null
earth science
paleoclimate
ice cores
depth,null,null,meter,null,ice cores,null,null,N,null
earth science
paleoclimate
climate forcing|ice cores
methane,bulk atmosphere,one standard deviation,parts per billion,null,climate forcing|ice cores,null,gas chromatography - flame ionization detection|wet extraction,N,uncertainty a mix of multiple measurements and blanks
earth science
paleoclimate
climate forcing|ice cores
nitrous oxide,bulk atmosphere,null,parts per billion,null,climate forcing|ice cores,null,gas chromatography - electron capture detection,N,null
earth science
paleoclimate
climate forcing|ice cores
methane,bulk atmosphere,null,parts per billion,null,climate forcing|ice cores,null,gas chromatography - flame ionization detection|wet extraction,N,null
earth science
paleoclimate
climate forcing|ice cores
nitrous oxide,bulk atmosphere,one standard deviation,parts per billion,null,climate forcing|ice cores,null,gas chromatography - electron capture detection,N,null
earth science
paleoclimate
ice cores
gas age,null,null,calendar year before present,null,ice cores,null,null,N,null
earth science
paleoclimate
climate forcing|ice cores
methane,bulk atmosphere,one standard deviation,parts per billion,null,climate forcing|ice cores,null,gas chromatography - flame ionization detection|wet extraction,N,null
earth science
paleoclimate
climate forcing|ice cores
nitrous oxide,bulk atmosphere,null,parts per billion,null,climate forcing|ice cores,null,gas chromatography - electron capture detection|wet extraction,N,null
earth science
paleoclimate
ice core
atmospheric gas
geoscientificInformation
Glacial
139904 cal yr BP
171 cal yr BP
Complete
-75
75.1
-42.33
159.1833
2315
2917
Continent
Antarctica
Talos Dome TALDICE>LATITUDE -72.8166>LONGITUDE 159.1833
Continent
Antarctica
EPICA Dronning Maud Land>LATITUDE -75>LONGITUDE .07
Continent
North America
Greenland
NGRIP>LATITUDE 75.1>LONGITUDE -42.33
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
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
Schilt, A., M. Baumgartner, J. Schwander, D. Buiron,
E. Capron, J. Chappellaz, L. Loulergue, S. Schüpbach,
R. Spahni, H. Fischer, and T.F. Stocker. 2010.
Atmospheric nitrous oxide during the last 140,000 years.
Earth and Planetary Science Letters, Vol. 300, pp. 33-43.
doi:10.1016/j.epsl.2010.09.027
Reconstructions of past atmospheric concentrations of greenhouse gases
provide unique insight into the biogeochemical cycles and the past
radiative forcing in the Earth's climate system. We present new
measurements of atmospheric nitrous oxide along the ice cores of the
North Greenland Ice Core Project and Talos Dome sites. Using records
of several other ice cores, we are now able to establish the first
complete composite nitrous oxide record reaching back to the beginning
of the previous interglacial about 140,000 yr ago. On the basis of
such composite ice core records, we further calculate the radiative
forcing of the three most important greenhouse gases carbon dioxide,
methane and nitrous oxide during more than a full glacial-interglacial
cycle. Nitrous oxide varies in line with climate, reaching very low
concentrations of about 200 parts per billion by volume during Marine
Isotope Stages 4 and 2, and showing substantial responses to millennial
time scale climate variations during the last glacial. A large part
of these millennial time scale variations can be explained by parallel
changes in the sources of methane and nitrous oxide. However, as
revealed by high-resolution measurements covering the Dansgaard/Oeschger
events 17 to 15, the evolution of these two greenhouse gases may be
decoupled on the centennial time scale. Carbon dioxide and methane
concentrations do not reach interglacial levels in the course of
millennial time scale climate variations during the last glacial.
In contrast, nitrous oxide often reaches interglacial concentrations
in response to both, glacial terminations and Dansgaard/Oeschger events.
This indicates, from a biogeochemical point of view, similar drivers
in both temporal cases. While carbon dioxide and methane concentrations
are more strongly controlled by climate changes in high latitudes,
nitrous oxide emissions changes may mainly stem from the ocean and/or
from soils located at low latitudes. Accordingly, we speculate that
high latitudes could play the leading role to trigger glacial
terminations.
STUDY NOTES: N2O record from the Talos Dome ice core, Antarctica, 72°47' S, 159°04' E,
covering the last 140 Kyr.
CH4 record from the EPICA Dronning Maud Land ice core, Antarctica,
75°00'S, 00°04'E, covering the last 140 Kyr.
N2O record from the NGRIP ice core (Greenland, 75°06' N, 42°20' W)
covering Dansgaard/Oeschger events 15 to 17, 64 to 55 KYrBP.
CH4 and N2O data from the North Greenland Ice Sheet Project (NGRIP)
ice core (75°06' N, 42°20' W) covering Termination 1, ~16-11 KYrBP.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/gases/ngrip-n2o-do15-17.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/gases/ngrip-ch4-n2o-term1.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/talos-n2o-140k.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/talos-n2o-140k.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/gases/ngrip-n2o-do15-17.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/gases/ngrip-ch4-n2o-term1.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/maud/edml-ch4-140k.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/maud/edml-ch4-140k.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11