Burgay, Francois; Spolaor, Andrea; Gabrieli, Jacopo; Cozzi, Giulio; Turetta, Clara; Vallelonga, Paul T; Barbante, Carlo (2021): Fe concentration and fluxes from the NEEM ice core (Greenland) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930580
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Abstract:
In this dataset, we present Fe, Na and Ca concentration and fluxes retrieved from the North Greenland Eemian Ice Drilling (NEEM) ice core project, covering the last 108 kyrs. The sampling resolution was 110 cm. To ensure an effective dissolution of Fe particles, samples were acidified to pH 1 using Suprapure nitric acid and stored at room temperature for 1 month before the analysis. The ice samples were analyzed with an Inductively Coupled Plasma Single Quadrupole Mass Spectrometer equipped with a quartz Scott spray chamber. Limits of Detection, calculated as three times the standard deviation of the blanks, were 0.8 µg L-1 for 57Fe, 1 µg L-1 for Ca and 3 µg L-1 for Na.
Our results show that Holocene Fe fluxes (0.042 -11.7 kyr b2k, 0.5 mg m-2 yr-1) at the NEEM site were four times lower than the average recorded over the last glacial period (11.7– 108 kyr b2k, 2.0 mg m-2 yr-1), while they were greater during the Last Glacial Maximum (LGM, 14.5 – 26.5 kyr b2k, 3.6 mg m-2 yr-1) and Marine Isotope Stage 4 (MIS 4, 60 - 71 kyr b2k, 5.8 mg m-2 yr-1).
Supplement to:
Burgay, Francois; Spolaor, Andrea; Gabrieli, Jacopo; Cozzi, Giulio; Turetta, Clara; Vallelonga, Paul T; Barbante, Carlo (2021): Atmospheric iron supply and marine productivity in the glacial North Pacific Ocean. Climate of the Past, 17(1), 491-505, https://doi.org/10.5194/cp-17-491-2021
Further details:
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): 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
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: 18.70 m * Maximum DEPTH, ice/snow: 2203.30 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:
We present Fe, Ca and Na concentration and fluxes. Dating (GICC05modelext-NEEM-1) and accumulation data are from Rasmussen et al., 2013.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Age | Age | ka b2k | Burgay, Francois | ||
| 2 | Depth, top/min | Depth top | m | Burgay, Francois | ice/snow | |
| 3 | Depth, bottom/max | Depth bot | m | Burgay, Francois | ice/snow | |
| 4 | DEPTH, ice/snow | Depth ice/snow | m | Burgay, Francois | Geocode | |
| 5 | Iron | Fe | ng/g | Burgay, Francois | ||
| 6 | Iron, flux per year | Fe flux | mg/m2/a | Burgay, Francois | Calculated | |
| 7 | Sodium | Na+ | ng/g | Burgay, Francois | ||
| 8 | Sodium, flux per year | Na flux | mg/m2/a | Burgay, Francois | Calculated | |
| 9 | Calcium | Ca2+ | ng/g | Burgay, Francois | ||
| 10 | Calcium, flux per year | Ca flux | mg/m2/a | Burgay, Francois | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
14386 data points
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