Rasmussen, Sune Olander; Abbott, Peter M; Blunier, Thomas; Bourne, Mark; Brook, Edward J; Buchardt, Susanne L; Buizert, Christo; Chappellaz, Jérôme A; Clausen, Henrik Brink; Cook, Eliza; Dahl-Jensen, Dorthe; Davies, Siwan M; Guillevic, Myriam; Kipfstuhl, Sepp; Laepple, Thomas; Seierstad, Inger K; Severinghaus, Jeffrey P; Steffensen, Jørgen Peder; Stowasser, Christopher; Svensson, Anders M; Vallelonga, Paul T; Vinther, Bo Møllesøe; Wilhelms, Frank; Winstrup, Mai (2013): Concentration of hydrogen ions measured with the Electrical Conductivity Method (ECM) on the NEEM ice core [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.831525, In supplement to: Rasmussen, SO et al. (2013): A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core. Climate of the Past, 9(6), 2713-2730, https://doi.org/10.5194/cp-9-2713-2013
Always quote citation above when using data! You can download the citation in several formats below.
Source:
Dahl-Jensen, Dorthe; Rasmussen, Sune Olander; Clausen, Henrik Brink; Steffensen, Jørgen Peder; Svensson, Anders M; Vallelonga, Paul T; Vinther, Bo Møllesøe; Winstrup, Mai (2013): NEEM ice core ECM data. World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program, ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/neem/neem2013ecm.txt
Other version:
Rasmussen, Sune Olander; Abbott, Peter M; Blunier, Thomas; Bourne, Anna J; Brook, Edward J; Buchardt, Susanne L; Buizert, Christo; Chappellaz, Jérôme A; Clausen, Henrik Brink; Cook, Eliza; Dahl-Jensen, Dorthe; Davies, Siwan M; Guillevic, Myriam; Kipfstuhl, Sepp; Laepple, Thomas; Seierstad, Inger K; Severinghaus, Jeffrey P; Steffensen, Jørgen Peder; Stowasser, Christopher; Svensson, Anders M; Vallelonga, Paul T; Vinther, Bo Møllesøe; Wilhelms, Frank; Winstrup, Mai (2013): NOAA/WDS Paleoclimatology - NEEM Ice Core NEEM-1 Time Scale. NOAA National Centers for Environmental Information, https://doi.org/10.25921/GAB6-FA09
Project(s):
Funding:
Agence Nationale de la Recherche (ANR), grant/award no. 07-VULN-09-001: North Greenland Eemian Ice Drilling
Coverage:
Latitude: 77.450000 * Longitude: -51.060000
Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00
Minimum DEPTH, ice/snow: 8.26 m * Maximum DEPTH, ice/snow: 2533.84 m
Event(s):
NEEM * Latitude: 77.450000 * Longitude: -51.060000 * Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00 * Elevation: 2545.0 m * Recovery: 2533.21 m * Location: Greenland * Method/Device: Ice drill (ICEDRILL)
Comment:
The ECM data has been temperature corrected to a standard temperature of -14 °C, according to an Arrhenius relationship using an activation energy of 0.23 eV. Subsequently, the measured current has been converted to ice acidity using the relationship suggested by Hammer (1980). For more information on the calibration procedure see Rasmussen et al, 2013.
Due to the manual approach of the applied ECM technique depth assignment is only accurate to within 1-2 cm. Data in areas of breaks have been removed from the resulting data sets, and data has been downsampled to 1 cm resolution.
The ECM data was obtained in the field during the NEEM field seasons 2008-2011, and given for the interval
8.26-2533.84m. Upper part of the interval (8.26-98.46 m) is measured on NEEM 2008 S1 core, which was the NEEM
pilot core.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Geocode | ||
| 2 | Hydrogen ion concentration | H+ | µeq/kg | Dahl-Jensen, Dorthe | Electrical conductivity method, ECM (Hammer, 1980) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
252560 data points
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