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Data Correlating the Shallow GISP2 Dust Profile with the Wolf Sunspot Number Series


These data were collected for a research project that utilized the Greenland Ice Sheet Project Two (GISP2) ice core. The project sought evidence of an 11-year sunspot cycle and whether the cycle correlated with dust that had been transported by global atmospheric circulation to the summit of Greenland and incorporated into the ice sheet. The dust profile was measured along the top 120 m of the GISP2 B-core using laser-light scattering (LLS) from meltwater. The profile has been dated using the established B-core depth-age scale and ranges from 1597 to 1988 A.D. It contains an average of 13 samples per year. There are significant gaps from 1698 to 1711 and from 1719 to 1727 A.D. where the ice was previously heavily sampled and therefore unavailable for analysis. Based on previous evidence that the GISP2 deep (>1600 m) dust profile contains solar-type variability, investigators correlated the shallow dust profile with the Wolf Sunspot Number (SSN) series. The period under investigation ranges from 1752 to 1988 A.D. This research project was funded by the Arctic System Sciences (ARCSS) Program, grant number OPP-9711609.

Data access

ORDER data for delivery by FTP

Additional information

Related projects: ARCSS
Observational frequency: other
Spatial type: point
Categories: Arctic, Ice Physics
Documentation: index.html [12 KB]
Related links:
Identifier: doi:10.5065/D6DJ5CRG (Link: )

Temporal coverage

Begin datetime: 1752-01-01 00:00:00, End datetime: 1988-12-31 23:59:59

Spatial coverage

Minimum latitude: 72.583610, Minimum longitude: -38.500000
Maximum latitude: 72.583610, Maximum longitude: -38.500000


Point of contact

Michael Ram
E-Mail address: phymram at ice dot physics dot buffalo dot edu