noaa-ocean-13479
Western Pacific Warm Pool ODP871 500 KYr Foraminiferal d18O and Mg/Ca SST
Dyez, K.A.; Ravelo, A.C.
Western Pacific Warm Pool ODP871 500 KYr Foraminiferal d18O and Mg/Ca SST
2012-10-29
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13479
Investigator
K.A.
Dyez
Investigator
A.C.
Ravelo
earth science
paleoclimate
paleoceanography
age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
magnesium/calcium,Globigerinoides ruber,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Globigerinoides ruber,null,per mil VPDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,Mg/Ca Globigerinoides ruber
earth science
paleoclimate
paleoceanography
notes,null,null,null,null,paleoceanography,null,null,C,Site Hole Core Type Section Interval-cm
earth science
paleoclimate
paleoceanography
depth,null,null,meter,null,paleoceanography,null,null,N,mbsf
earth science
paleoclimate
paleocean
geochemistry
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
reconstruction
geoscientificInformation
Sea Surface Temperature Reconstruction
Warm Pool
537150 cal yr BP
0 cal yr BP
Complete
5.5572
5.5572
172.3443
172.3443
-1254
-1254
Ocean
Pacific Ocean
Western Pacific Ocean
ODP 871>LATITUDE 5.5572>LONGITUDE 172.3443
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
Dyez, K.A. and A.C. Ravelo. 2013.
Late Pleistocene tropical Pacific temperature sensitivity to radiative greenhouse gas forcing.
Geology, January 2013.
DOI: 110.1130/G33425.1
Published online 19-October-2012
Understanding how global temperature changes with increasing atmospheric greenhouse gas concentrations, or climate sensitivity, is of central importance to climate change research. Climate models provide sensitivity estimates that may not fully incorporate slow, long-term feedbacks such as those involving ice sheets and vegetation. Geological studies, on the other hand, can provide estimates that integrate long- and short-term climate feedbacks to radiative forcing. Because high latitudes are thought to be most sensitive to greenhouse gas forcing owing to, for example, ice-albedo feedbacks, we focus on the tropical Pacific Ocean to derive a minimum value for long-term climate sensitivity. Using Mg/Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool, we estimate the tropical Pacific climate sensitivity parameter (lambda) to be 0.94-1.06°C (W m-2)-1, higher than that predicted by model simulations of the Last Glacial Maximum or by models of doubled greenhouse gas concentration forcing. This result suggests that models may not yet adequately represent the long-term feedbacks related to ocean circulation, vegetation and associated dust, or the cryosphere, and/or may underestimate the effects of tropical clouds or other short-term feedback processes.
STUDY NOTES: Mg/Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2013/dyez2013.txt
USA/NOAA
DIF
Version 9.8.4
2019-04-29
2019-04-29