noaa-icecore-14201
James Ross Island Ice Core 1000 Year Deuterium and Melt Data
Abram, N.J.; Mulvaney, R.; Wolff, E.W.; Triest, J.; Kipfstuhl, S.; Trusel, L.D.; Vimeux, F.; Fleet, L.; Arrowsmith, C.
James Ross Island Ice Core 1000 Year Deuterium and Melt Data
2013-04-14
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/14201
Investigator
N.J.
Abram
Investigator
R.
Mulvaney
Investigator
E.W.
Wolff
Investigator
J.
Triest
Investigator
S.
Kipfstuhl
Investigator
L.D.
Trusel
Investigator
F.
Vimeux
Investigator
L.
Fleet
Investigator
C.
Arrowsmith
earth science
paleoclimate
ice cores
ice age,null,null,year Common Era,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
melt,bulk ice,null,percent,null,ice cores,null,null,N,null
earth science
paleoclimate
ice cores
melt,bulk ice,null,centimeter,null,ice cores,smoothed,null,N,null
earth science
paleoclimate
ice cores
delta 2H,bulk ice,null,per mil VSMOW,null,ice cores,smoothed,null,N,null
earth science
paleoclimate
ice cores
melt,bulk ice,null,percent,null,ice cores,smoothed,null,N,null
earth science
paleoclimate
ice cores
melt,bulk ice,null,centimeter,null,ice cores,null,null,N,null
earth science
paleoclimate
climate reconstructions|ice cores
depth,null,null,meter,null,climate reconstructions|ice cores,null,null,N,null
earth science
paleoclimate
ice cores
delta 2H,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null
earth science
paleoclimate
ice core
physical properties
earth science
paleoclimate
ice core
hydrogen isotopes
geoscientificInformation
1000 AD
2007 AD
950 cal yr BP
-57 cal yr BP
Complete
-64.2017
-64.2017
-57.685
-57.685
1542
1542
Continent
Antarctica
James Ross Island>LATITUDE -64.2017>LONGITUDE -57.685
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
Nerilie J. Abram, Robert Mulvaney, Eric W. Wolff, Jack Triest, Sepp Kipfstuhl, Luke D. Trusel, Francoise Vimeux, Louise Fleet, and Carol Arrowsmith. 2013.
Acceleration of snowmelt in an Antarctic Peninsula ice core during the 20th century.
Nature Geoscience, DOI: 10.1038/ngeo1787
Over the past 50 years, warming of the Antarctic Peninsula has been accompanied by accelerating glacier mass loss and the retreat and collapse of ice shelves. A key driver of ice loss is summer melting; however, it is not usually possible to specifically reconstruct the summer conditions that are critical for determining ice melt in Antarctic. Here we reconstruct changes in ice-melt intensity and mean temperature on the northern Antarctic Peninsula since AD 1000 based on the identification of visible melt layers in the James Ross Island ice core and local mean annual temperature estimates from the deuterium content of the ice. During the past millennium, the coolest conditions and lowest melt occurred from about AD 1410 to 1460, when mean temperature was 1.6C lower than that of 1981-2000. Since the late 1400s, there has been a nearly tenfold increase in melt intensity from 0.5 to 4.9%. The warming has occurred in progressive phases since about AD 1460, but intensification of melt is nonlinear, and has largely occurred since the mid-twentieth century. Summer melting is now at a level that is unprecedented over the past 1,000 years. We conclude that ice on the Antarctic Peninsula is now particularly susceptible to rapid increases in melting and loss in response to relatively small increases in mean temperature.
STUDY NOTES: Deutrium (dD) and annual melt percentage and melt width data from the James Ross Island ice core, Antarctic Peninsula, for the last 1000 years.
Annual averages are winter centred for isotopes, and summer centred for melt. Ages are given for the mid-year point. E.g. melt values assigned
to 2006 are an average taken from ~July 2005 to ~June 2006. Data are given as annual averages from the top of the core back to 1807 AD.
Age control back to 1807 is annually-defined based on annual cycles of nss-SO4. Beyond 1807 the age control is derived from the JRI-1
age scale (Mulvaney et al 2012, Nature), and data are given only as 11-year moving averages owing to the greater annual age uncertainty
in this portion of the record.
Deuterium isotope data can be converted to temperature at this site using a temperature dependence of 6.4 per degC-1 (Abram et al.,2011, JGR)
See also the Supplementary information provided in Mulvaney et al 2012, Nature, for the full Holocene deuterium isotope data for the JRI ice core
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/james-ross-island/james-ross-island2013melt.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/james-ross-island/james-ross-island2013.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/james-ross-island/james-ross-island2013dd.txt
USA/NOAA
DIF
Version 9.8.4
2019-05-06
2019-05-06