[Parameters: Topic='PALEOCLIMATE', Term='ICE CORE RECORDS', Variable_Level_1='PARTICULATE MATTER']
Penny Ice Cap Microparticle DataEntry ID: NOAA_NCDC_PALEO_1999-056
Abstract: Penny Ice Cap ice core and snowpit microparticle data.
This dataset contains a summary of microparticle measurements from snowpits
and a 334-m long ice core (P95) from the Penny Ice Cap, Baffin Island, Canada.
Snowpits were excavated in 1994-1995, and core P95 was drilled in April-May
The P95 core was dated back to 7900 yr ago (319 m) by ... spectral analysis of the
electrical conductivity record which tracks seasonal chemical variations
(Fisher et al. 1998; Grumet et al., 1998. Additional time control was provided
by conductivity and sulfate peaks related major volcanic eruptions. Beyond
7900 yr ago, the depth-age curve was adjusted to match the end of the Younger
Dryas-Holocene transition (326 m) dated at 11,550 +/- 70 yr ago in Greenland
ice-core records. Age values for the P95 microparticle record are expressed in
years before A.D. 2000 (yb2k).
Microparticle concentrations and size distributions were measured
for a size range of 0.85 to 12 µm with an Elzone 280PC multi-channel
particle counter equipped with a 30 µm orifice (Zdanowicz et al., 1998).
The microparticle parameters are:
N = total number of particles [0.85-12 µm], expressed in thousands of
particles per mililiter of meltwater (10^3 ml^-1)
M = total mass of particles [0.85-12 µm], expressed in micrograms per
kilogram of ice (µg kg^-1 or ppb)
NMD = arithmetic mean diameter of microparticles [0.85-12 µm], in micrometers
b (beta) = slope of a Junge distribution applied to microparticles with
diameter < 1 µm
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: Christian M. Zdanowicz
Dataset Title: Penny Ice Cap Microparticle Data
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 1999-056
Dataset Release Date: 1999-10
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 1999-056
Issue Identification: 1999-056
Other Citation Details: NOAA/NCDC Paleoclimatology ProgramOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/polar/penny/readme_p...
Paleo Temporal Coverage
Paleo Start Date: 7900 ybp
Paleo Stop Date: 0 ybp
Data Set Progress
Distribution Media: ftp
Zdanowicz, C.M., Zielinski, G.A. and Wake, C.P (1998). Characteristics of
modern atmospheric dust deposition in snow on the Penny ice cap, Baffin Island,
Arctic Canada. Tellus 50B, 506-520.
Fisher, D.A. and 12 others (1998). Penny ice cap cores, Baffin Island, Canada,
and the Wisconsinan Foxe Dome connection: Two states of Hudson Bay ice cover.
Science ... 279, 692-695.
Grumet, N.S., Wake, C.P., Zielinski, G.A., Fisher, D.A. and Jacobs, J.D.
(1998). Preservation of glaciochemical time-series in snow and ice records
from the percolation zone of the Penny Ice Cap, Baffin Island. Geophysical
Research Letters 25, 357-360.
Zdanowicz, C.M., Zielinski, G.A., Wake, C.P., Fisher, D.A. and Koerner, R.M.
(2000). A Holocene record of atmospheric dust deposition from the Penny ice
cap, Baffin Island, Canada. Quaternary Research, v53, No. 1, pp 62 -69,
Creation and Review Dates
DIF Creation Date: 2006-12-29
Last DIF Revision Date: 2009-01-21