D4i Greenland ice-core non-sea-salt sulfur concentrations and calculated volcanic sulfate deposition (1733-1900 CE) ...
The D4 ice core was recovered in 2003 from a high elevation, cold site in the dry snow region of the Greenland ice sheet (71.4°N, 43.9°W, 2730 m asl, 41 cm water equivalent per year annual accumulation rate). Initial collection and previous analyses of the core have been reported earlier (e.g., McCo...
| Main Authors: | , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.960977 https://doi.pangaea.de/10.1594/PANGAEA.960977 |
| Summary: | The D4 ice core was recovered in 2003 from a high elevation, cold site in the dry snow region of the Greenland ice sheet (71.4°N, 43.9°W, 2730 m asl, 41 cm water equivalent per year annual accumulation rate). Initial collection and previous analyses of the core have been reported earlier (e.g., McConnell et al., 2007). New longitudinal samples of ~32 by ~32 mm were cut (D4i) from contiguous sections of the remaining D4 core archived in a commercial storage facility in Reno. The samples from near and below the pore close-off depth (66-145 m depth; dating 1733-1900 CE) were analyzed continuously using a state-of-the-art ice core analytical system. https://icecores.org/inventory/d4 . Mean monthly D4i non-sea-salt sulfur concentrations corrected for sea-salt sulfur contribution based on [Na], assuming a S/Na mass ratio of seawater of 0.084 [Bowen, 1979]. Estimated mean monthly D4i median pre-industrial (1733-1875 CE) sulfur background concentrations after excluding volcanic events identified as monthly values ... : The dataset has four columns and is presented at a nominal monthly resolution (mid-month). For example the first value is for a core depth of 66.27m and has a nominal age of 15 Dec 1900. ... |
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