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Earth Observing Laboratory
Field Data Archive

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

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Summary

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.

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Additional information

Identifier
Versions
  • 1.0 (2009-04-29)
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Related projects
Spatial Type point
Frequency other
Language English
Grant Code OPP-9711609
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
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Temporal coverage

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

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 72.58361, Minimum (South) Latitude: 72.58361
Minimum (West) Longitude: -38.50, Maximum (East) Longitude: -38.50

Primary point of contact information

Michael Ram <phymram@ice.physics.buffalo.edu>

Additional contact information

Citation

Ram, M., Jr., J., Ram, M. 2009. Data Correlating the Shallow GISP2 Dust Profile with the Wolf Sunspot Number Series. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6DJ5CRG. Accessed 02 Dec 2024.

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NSF

This material is based upon work supported by the NSF National Center for Atmospheric Research, a major facility sponsored by the U.S. National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the U.S. National Science Foundation.