noaa-ocean-13034
North Icelandic Shelf 1350 Year Molusc Radiocarbon Data
Wanamaker, A.D.; Butler, P.G.; Scourse, J.D.; Heinemeier, J.; Eiríksson, J.; Knudsen, K.L.; Richardson, C.A.
North Icelandic Shelf 1350 Year Molusc Radiocarbon Data
2012-06-21
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13034
Investigator
A.D.
Wanamaker
Investigator
P.G.
Butler
Investigator
J.D.
Scourse
Investigator
J.
Heinemeier
Investigator
J.
Eiríksson
Investigator
K.L.
Knudsen
Investigator
C.A.
Richardson
earth science
paleoclimate
paleoceanography
delta 13C,bivalve,null,per mil VPDB,null,paleoceanography,null,null,N,Arctica islandica
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,bivalve,null,per mil VPDB,null,paleoceanography,null,null,N,Arctica islandica
earth science
paleoclimate
paleoceanography
age,null,null,year Common Era,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
carbon isotopes
geoscientificInformation
Little Ice Age (LIA)
Medieval Climate Anomaly (MCA)
Meridional Overturning Circulation (MOC)
675 AD
1950 AD
1275 cal yr BP
0 cal yr BP
Complete
66.5265
66.5265
-18.1957
-18.1957
-82
-82
Ocean
Atlantic Ocean
North Atlantic Ocean
Trawl B05AD03>LATITUDE 66.5265>LONGITUDE -18.1957
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
Wanamaker, A.D., P.G. Butler, J.D. Scourse, J. Heinemeier,
J. Eiríksson, K.L. Knudsen, and C.A. Richardson. 2012.
Surface changes in the North Atlantic meridional overturning
circulation during the last millennium.
Nature Communications, Published 12 Jun 2012.
DOI: 10.1038/ncomms1901
Despite numerous investigations, the dynamical origins of the Medieval
Climate Anomaly and the Little Ice Age remain uncertain. A major
unresolved issue relating to internal climate dynamics is the mode
and tempo of Atlantic meridional overturning circulation variability,
and the significance of decadal-to-centennial scale changes in Atlantic
meridional overturning circulation strength in regulating the climate
of the last millennium. Here we use the time-constrained high-resolution
local radiocarbon reservoir age offset derived from an absolutely dated
annually resolved shell chronology spanning the past 1,350 years,
to reconstruct changes in surface ocean circulation and climate.
The water mass tracer data presented here from the North Icelandic
shelf, combined with previously published data from the Arctic
and subtropical Atlantic, show that surface Atlantic meridional
overturning circulation dynamics likely amplified the relatively warm
conditions during the Medieval Climate Anomaly and the relatively cool
conditions during the Little Ice Age within the North Atlantic sector.
STUDY NOTES: Radiocarbon content of shells of the long-lived marine bivalve
Arctica islandica collected on the North Icelandic shelf.
The shells were absolutely dated using crossdating techniques
derived from dendrochronology, and provide a 1350-year record
of water mass migration and strength of the Atlantic meridional
overturning circulation.
Shells were collected near the island of Grimsey, North Icelandic
Shelf, at a water depth of 81-83 m from the RV Bjarni Saemundsson
(Cruise No. B05-2006, trawl B05AD03).
Trawl B05AD03: 66°31.59'N, 18°11.74'W, ~82m water depth.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wanamaker2012/wanamaker2012.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wanamaker2012/wanamaker2012.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11