Dataset Title NEEM ice coring project
Dataset Purpose The motivation for this drilling site was that none of the former deep ice cores from Greenland (Camp Century, DYE-3, GRIP, GRIP2, or NGRIP) contains complete and undisturbed layers from the Eemian, because the layers have either melted or have been disturbed by ice flow close to the bedrock.
Dataset Abstract The North Greenland Eemian Ice Drilling - NEEM - is an international ice core research project aimed at retrieving an ice core from North-West Greenland reaching back through the previous interglacial, the Eemian. The project logistics is managed by the Centre for Ice and Climate, Denmark, and the air support is carried out by US ski equipped Hercules managed through the US Office of Polar Programs, National Science Foundation. The ice core was drilled during 2008-2012.
Acquisition Methodology Check individual instruments description for details.
Quality
Dataset DOI
Access Constraints
Use Constraints Please cite original publication, online resource and date accessed when using this data. If there is no publication information, please cite investigator, title, online resource and date accessed.
Keywords Ice cores, NEEN, Greenland, water stable isotopes, Holocene, Eemian, last interglacial
Status Complete
Temporal Coverage
Start Date
Stop Date
Project 0
Project short Name NEEM
Project long Name North Greenland Eemian Ice Drilling
URL http://neem.dk/
Description The NEEM project is an international ice core research project aimed at retrieving an ice core from North-West Greenland reaching back through the previous interglacial, the Eemian. The project logistics is managed by the Centre for Ice and Climate, Denmark, and the air support is carried out by US ski equipped Hercules managed through the US Office of Polar Programs, National Science Foundation.
URL Type VIEW PROJECT HOME PAGE
Contact 0
Role Investigator
Full Name Raynaud Dominique
Email raynaud@lgge.obs.ujf-grenoble.fr
Phone +33(0)476824252
Fax
Organism short Name LGGE
Organism long Name Laboratoire de Glaciologie et  Géophysique de l'Environnement
URL http://lgge.osug.fr/
Description About 150 persons work at the Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), created in 1958. The research topics of the laboratory are snow and ice, glaciers, climate - atmosphere, ice and ocean - and the environment.
URL Type VIEW PROJECT HOME PAGE
Address (Line1) Laboratoire de Glaciologie et Géophysique de l’Environnement 54, rue Molièr
Address (Line2) BP 96, Bâtiment LGGE - Bureau 116
City Saint-Martin d’Hères cedex
Postal Code 38402
Country France
Contact 1
Role Investigator
Full Name Prié Frédéric
Email frederic.prie@lsce.ipsl.fr
Phone +33 (0)1 69 08 32 15
Fax +33 (0)1 69 08 77 16
Organism short Name LSCE
Organism long Name Laboratoire des Sciences du Climat et de l'Environnement
URL http://www.lsce.ipsl.fr/index.php
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) LSCE-Orme point courrier 129 CEA-Orme des Merisiers
Address (Line2)
City Gif sur Yvetter
Postal Code 91191
Country France
Contact 2
Role Investigator
Full Name Landais Amaelle
Email Amaelle.Landais@lsce.ipsl.fr
Phone +33(0)169084672
Fax +33(0)169087716
Organism short Name LSCE
Organism long Name Laboratoire des Sciences du Climat et de l'Environnement
URL http://www.lsce.ipsl.fr/index.php
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) LSCE-Orme point courrier 129 CEA-Orme des Merisiers
Address (Line2)
City Gif sur Yvetter
Postal Code 91191
Country France
Contact 3
Role Investigator
Full Name Dahl-Jensen Dorthe
Email ddj@gfy.ku.dk
Phone +45 35320556
Fax +45 35320621
Organism short Name
Organism long Name Centre for ice and Climate, Niels Bohr Institute, University of Copenahgen
URL http://www.iceandclimate.nbi.ku.dk/
Description
URL Type VIEW PROFESSIONAL HOME PAGE
Address (Line1) The Niels Bohr Institute, Ice and Climate Juliane Maries Vej 30, Room 01-03-316
Address (Line2)
City Copenhagen
Postal Code 2100
Country Denmark
Contact 4
Role Investigator
Full Name Masson-Delmotte Valérie
Email valerie.masson@lsce.ipsl.fr
Phone +33(0)169087715
Fax +33(0)169087716
Organism short Name LSCE
Organism long Name Laboratoire des Sciences du Climat et de l'Environnement
URL http://www.lsce.ipsl.fr/index.php
Description
URL Type VIEW PROJECT HOME PAGE
Address (Line1) LSCE, Bat 701, L'Orme des Merisiers, CEA Saclay
Address (Line2)
City Gif-sur-Yvette cédex
Postal Code 91191
Country France
Parameter 0
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORES RECORDS/ISOTOPES
Parameter δ18O in ice (δ18Oice)
Units per mille (‰: 1/1000)
Accuracy 0.1‰
Parameter 1
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Temperature Change
Units degree_Celsius (°C: K @ 273.15)
Parameter 2
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Ice age (GICCO5 timescale)
Units Thousands of years before A.D. 2000 (kyr b2k)
Parameter 3
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Gas age (GICCO5 timescale)
Units Thousands of years before A.D. 2000 (kyr b2k)
Parameter 4
Category EARTH SCIENCE/CLIMATE INDICATORS/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Ice age (EDML1 timescale)
Units Thousand years before present (kyr BP)
Parameter 5
Category EARTH SCIENCE/CLIMATE INDICATORS/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Gas age (EDML1 timescale)
Units Thousand years before present (kyr BP)
Parameter 6
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter NEEM depth
Units meter (m)
Parameter 7
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter delta-Kr/Ar (δ-Kr/Ar)
Units per mille (‰: 1/1000)
Accuracy 3‰
Parameter 8
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter delta-Xe/Ar (δ-Xe/Ar)
Units per mille (‰: 1/1000)
Accuracy 1‰
Parameter 9
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS/ICE CORE AIR BUBBLES
Parameter Air content corrected for cut bubble effect (V corr.: values of air content corrected for cut bubble effect)
Units cm3STP of dry air per 1 g of ice
Accuracy 1%
Parameter 10
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS/ICE CORE AIR BUBBLES
Parameter measured values of air content (V meas. )
Units cm3STP of dry air per 1 g of ice
Accuracy 1%
Parameter 11
Category EARTH SCIENCE/PALEOCLIMATE INDICATORS/ICE CORE RECORDS/ISOTOPES
Parameter δ18O in the atmosphere (δ18Oatm)
Units per mille (‰: 1/1000)
Accuracy 0.015‰
Parameter 12
Category EARTH SCIENCE/CLIMATE INDICATORS/ICE CORE RECORDS/ISOTOPES
Parameter δ15N (δ15N)
Units per mille (‰: 1/1000)
Accuracy 0.006 ‰
Parameter 13
Category EARTH SCIENCE/PALECLIMATE/ICE CORE RECORDS
Parameter Ice core air content
Units milliliters per kilogram (ml/kg: milliliters per kilogram in STP)
Parameter 14
Category EARTH SCIENCE/CLIMATE INDICATORS/PALEOCLIMATE INDICATORS/NITROUS OXIDE
Parameter Nitrous oxide (N2O)
Units per mille (‰: 1/1000)
Accuracy 5ppb (mean uncertainty)
Parameter 15
Category EARTH SCIENCE/CLIMATE INDICATORS/PALEOCLIMATE INDICATORS/ICE CORE RECORDS
Parameter Methane (CH4)
Units Part per billion (ppb: NULL)
Accuracy 10ppb (mean uncertainty)
Parameter 16
Category EARTH SCIENCE/CLIMATE INDICATORS/CRYOSPHERIC INDICATORS/
Parameter Ice sheet elevation change
Units meter (m)
Datacenter short Name NOAA Paleoclimatology: Greenland Ice Core Data
Datacenter long Name National Oceanographic and Admospheric Administration's National Climatic Data Center (NCDC): Greenland Ice Core Data
Address (Line1) NOAA Paleoclimatology Program 325 Broadway, Code E/CC23
Address (Line2)
City Boulder, CO
Postal Code 80305-3328
Country United States
URL http://www.ncdc.noaa.gov/paleo/icecore/greenland/greenland.html
Description NCDC provides the paleoclimatology data and information scientists need to understand natural climate variability and future climate change. We also operate the World Data Center for Paleoclimatology, which archives and distributes data contributed by scientists around the world.
URL Type VIEW PROJECT HOME PAGE
Reference 0
Reference Title Continuous monitoring of summer surface water vapour isotopic composition above the Greenland Ice Sheet
Authors Steen-Larsen H. C., S. J. Johnsen, V. Masson-Delmotte, B. Stenni, C. Risi, H. Sodemann, D. Balslev-Clausen, T. Blunier, D. Dahl-Jensen, M. D. Ellehøj, S. Falourd, A. Grindsted, V. Gkinis, J. Jouzel, T. Popp, S. Sheldon, S. B. Simonsen, J. Sjolte, J. P. Steffensen, P. Sperlich, A. E. Sveinbjörnsdóttir, B. M. Vinther, and J. W. C. White
Publication Date 2013-05-13
Series
Edition
Volume 13
Issue
Report_number
Publication Place
Publisher Atmospheric Chemistry and Physics
Pages 4815-4828
ISBN
DOI 10.5194/acp-13-4815-2013
Other reference details
URL http://www.atmos-chem-phys.net/13/4815/2013/acp-13-4815-2013.pdf
Description
URL Type ON-LINE ARCHIVE
Reference 1
Reference Title Eemian interglacial reconstructed from a Greenland folded ice core
Authors NEEM community members
Publication Date 2013-01-24
Series
Edition
Volume 493
Issue
Report_number
Publication Place
Publisher Nature
Pages 489–494
ISBN
DOI 10.1038/nature11789
Other reference details
URL
Description
URL Type
Reference 2
Reference Title What controls the isotopic composition of Greenland surface snow?
Authors Steen-Larsen, H. C., V. Masson-Delmotte, M. Hirabayashi, R. Winkler, K. Satow, F. Prié, N. Bayou, E. Brun, K. M. Cuffey, D. Dahl-Jensen, M. Dumont, M. Guillevic, S. Kipfstuhl, A. Landais, T. Popp, C. Risi, K. Steffen, B. Stenni, and A. E. Sveinbjörnsdottír
Publication Date 2014-02-20
Series
Edition
Volume 10
Issue
Report_number
Publication Place
Publisher
Pages 377-392
ISBN
DOI 10.5194/cp-10-377-2014
Other reference details
URL
Description
URL Type
Reference 3
Reference Title Spatial gradients of temperature, accumulation and δ18O-ice in Greenland over a series of Dansgaard–Oeschger events
Authors Guillevic M, L. Bazin, A. Landais, P. Kindler, A. Orsi, V. Masson-Delmotte, T. Blunier, S.J. Buchardt, E. Capron, M. Leuenberger, P. Martinerie, F. Prie and B.M. Vinther
Publication Date 2013-05-07
Series
Edition
Volume 9
Issue
Report_number
Publication Place
Publisher Climate of the past
Pages 1029–1051
ISBN
DOI 10.5194/cp-9-1029-2013
Other reference details
URL http://www.clim-past.net/9/1029/2013/cp-9-1029-2013.pdf
Description
URL Type ON-LINE ARCHIVE
Reference 4
Reference Title Triple isotopic composition of oxygen in surface snow and water vapor at NEEM (Greenland)
Authors Landais A., H.C. Steen-Larsen, M. Guillevic, V. Masson-Delmotte, B. Vinther and R. Winklera
Publication Date 2012-01-12
Series
Edition
Volume 77
Issue
Report_number
Publication Place
Publisher Geochimica et Cosmochimica Acta
Pages 304-316
ISBN
DOI 10.1016/j.gca.2011.11.022
Other reference details
URL
Description
URL Type
Reference 5
Reference Title Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland
Authors Steen-Larsen H. C., V. Masson-Delmotte, J. Sjolte, S. J. Johnsen, B. M. Vinther, F.-M. Bréon, H. B. Clausen, D. Dahl-Jensen, S. Falourd, X. Fettweis, H. Gallée, J. Jouzel, M. Kageyama, H. Lerche, B. Minster, G. Picard, H. J. Punge, C. Risi, D. Salas, J. Schwander, K. Steffen, A. E. Sveinbjörnsdóttir, A. Svensson and J. White
Publication Date 2011-03-27
Series
Edition
Volume 116
Issue D6
Report_number
Publication Place
Publisher
Pages
ISBN
DOI 10.1029/2010JD014311
Other reference details
URL
Description
URL Type
Multimedia Observed NEEM ice core: reconstruction of the Eemian interglacial period
Caption Observed NEEM ice core: reconstruction of the Eemian interglacial period
Description (a) A surface elevation map (scale to the right) of the position of the NEEM camp, including coloured upstream depositional positions (upstream time marker scale below) of the ice found in the NEEM ice core. The deep ice-core sites NGRIP, NEEM and Camp Century and the tracks of the RES (radio echo sounding) measurements (red lines) are shown on the map. (b) The observed records of d18Oice, d18Oatm (reversed scale) CH4, N2O, d15N and air content (reversed scale) from 2,162 m and deeper are plotted on the NEEM depth scale (bottom x axis). The air content measurements from LGGE and from University of Bern (thin curve, small symbols) are both included. Zones 0–6 (blue, 0–2,206.5 m; cyan, 2,206.5–2,209.6 m; green, 2,209.6–2,262.2 m; orange, 2,262.2–2,364.5 m; red, 2,364.5–2,418.0 m; dark red, 2,418.0–2,432.2 m; and brown, 2,432.2–2,537 m) represent the sections of the NEEM ice-core records with symbols marking the start (diamond) and end (square) of each zone. There is no discontinuity between zones 4 and 5 but spikes of CH4, N2O and air content occur in zone 4 (shaded grey). For comparison, the NGRIP data are plotted as light grey curves on the NGRIP depth scale on top of the plot. The NEEM and NGRIP depth scale are synchronized between 2,162 and 2.207.6 m NEEM depths.(Source: NEEM community members, 2013, Nature).
Distribution Format
Media
Size
Fees
Data Resolution
Latitude Resolution
Longitude Resolution
Horizontal Resolution Range
Vertical Resolution m
Vertical Resolution Range < 1 m
Temporal Resolution
Temporal Resolution Range
Instrument 0
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name
Instrument long Name MASS SPECTROMETERS
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description Water stable isotopes: 55 cm samples from the NEEM ice core (0-2537 m) have been measured for the stable water isotope δ18Oice at the Centre for Ice and Climate, Niels Bohr Institute and at LSCE in Saclay using mass spectrometry with an accuracy better than 0.1 ‰. The 5 cm samples have been measured from 2186 to 2210 m at the Centre for Ice and Climate, Niels Bohr Institute using cavity ring-down spectroscopy with an accuracy of approx. 0.1 ‰.
Instrument 1
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name In Situ Land-based Platforms
Instrument short Name Drill
Instrument long Name
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...) 51.06°W, 77.45°N
Instrument Altitude 2534
Instrument Depth
Instrument Description
Instrument 2
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name CSIRO ICELAB system
Instrument long Name
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description CH4, NO2 and air content data: Discrete ice samples with a length of 3 cm have been measured at the Physics Institute & Oeschger Centre for Climate Change Research, University of Bern for CH4 and N2O concentrations from the deepest part of the NEEM ice core (2201 to 2519 m, 278 measurements).
Instrument 3
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name Thermo Delta V
Instrument long Name DELTA V™ Isotope Ratio Mass Spectrometer
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description Measurements performed at LSCE for the bottom part of NEEM: One hundred and fifty eight duplicate measurements of d15N and d18O were performed between 2201 and 2524.5 m depth and five between 396.3 and 415.5m depth on the air trapped in the NEEM ice core. The air was extracted with a melt-refreeze method and analysed on a mass spectrometer (Thermo Delta V). Corrections were applied for the influence of the formation of CO+ of masses 28 and 29 in the mass spectrometer source.
Instrument 4
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name
Instrument long Name BAROMETERS
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description Measurements of air content along the NEEM ice core have been performed at LGGE using an original barometric method implemented with an experimental setup called STAN48. The STAN allows precise evaluation of the pressure and temperature of air extracted from an ice sample by its melting-refreezing under a vacuum in a volume-calibrated cell. After correction of the measured pressure for the partial pressure of saturated water vapor and of the calibrated volume for the volume occupied by refrozen bubble free ice, the air content V is calculated using the ideal gas law.The ice samples used in STAN have a mass of about 25 g and a regular shape of rectangular parallelepiped or cube, which facilitates estimation of their specific surface. The latter is needed to correct V measurements for “cut-bubble effect”.
Instrument 5
Site Name The NEEM camp is part of an international deep drilling program, it is located i
Location GREENLAND
Detailed Location
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name
Instrument long Name GAS SENSORS
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description Noble gas data: Selected NEEM ice core samples between 2398 and 2404 m (within the Eemian section) were measured for Kr/Ar and Xe/Ar ratios, in order to obtain evidence for melt layers.
Instrument 6
Site Name NEEM (North Greenland Eemian Drilling Project) camp
Location GREENLAND
Detailed Location The NEEM camp is part of an international deep drilling program, it is located in the North West of Greenland (2484 m asl)
Site Longitude
Site Latitude
Site Altitude
Site Depth
Platform short Name
Platform long Name LABORATORY
Instrument short Name ECM
Instrument long Name Electrical Conductivity Measurements
Instrument Longitude
Instrument Latitude
Network Lons/Lats (Format : lon0 lat0, Lon1 Lat1, ...)
Instrument Altitude
Instrument Depth
Instrument Description The ztransfer_NEEM file presents the transfer from depthscale to the EDML1 gas and ice timescale: Based on the Electrical Conductivity Measurements (ECM) 740 match points have been identified between the NEEM record and the NGRIP record which is dated by the GICC05 model-extended time scale. The match starts at the surface and reaches to the depth of 2203.597 m (108.17 kyr b2k).
Spatial Coverage
Southern latitude 77.45 degrees
Northern latitude 77.45 degrees
Western longitude -51.06 degrees
Eastern longitude -51.06 degrees
Minimum Altitude
Maximum Altitude
Minimum depth 0 m
Maximum depth 2533.84 m
Paleo Temporal Coverage
Paleo Start Date 108159 cal yr BP
Paleo Stop Date 0 cal yr BP (1950 AD)
Eon Phanerozoic
Era Cenozoic
Period Quaternary
Epoch Holocene/Pleistocene
Stage