Mount Logan Ice Core Isotope and Accumulation Data, NOAA/NCDC/WDC Paleoclimatology
Entry ID:
NOAA_NCDC_PALEO_2002-79
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Summary
This data set consists of a 301-year snow accumulation record from from Mount Logan, Yukon Territory, Canada. Snow accumulation is in meters, water equivalent, Estimated error +/- 0.05 m (max). The data have been updated from original 1980 core, in 1981, 1986, 1988 and 2000. ... [Abstract] The relatively short length of most instrumental climate records restricts the study of climate variability, and it is therefore essential to extend the record into the past with the help of proxy data. Only since the late 1940s have atmospheric data been available that are sufficient in quality and spatial resolution to identify the dominant patterns of climate variability, such as the Pacific North America pattern and the Pacific Decadal Oscillation. Here we present a 301-year snow accumulation record from an ice core at a height of 5,340 m above sea level - from Mount Logan, in northwestern North America. This record shows features that are closely linked with the Pacific North America pattern for the period of instrumental data availability. Our record extends back in time to cover the period from the closing stages of the Little Ice Age to the warmest decade in the past millennium. We find a positive, accelerating trend in snow accumulation after the middle of the nineteenth century. This trend is paralleled by a warming over northwestern North America which has been associated with secular changes in both the Pacific North America pattern and the Pacific Decadal Oscillation.
Multimedia Sample
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Caption:
Annual snow accumulation 1700-2000
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Geographic Coverage
Spatial coordinates
N: 60.62 |
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S: 60.62 |
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E: -140.52 |
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W: -140.52 |
Min Altitude: 0 M
Max Altitude: 5340 M
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Data Set Citation
Dataset Creator:
Moore, G.W.K., G. Holdsworth, and K. Alverson
Dataset Title:
Mount Logan Ice Core Isotope and Accumulation Data
Dataset Release Date:
November 2002
Dataset Release Place:
Boulder, CO
Dataset Publisher:
IGBP PAGES/World Data Center Paleoclimatology
Issue Identification:
IGBP PAGES/WDC Paleoclimatology Contribution #2002-079
Online Resource:
http://www.ngdc.noaa.gov/paleo/pubs/moore2002/moore2002.html
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Temporal Coverage
Start Date:
1736-01-01
Stop Date:
2000-12-31
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Paleo Temporal Coverage
Location Keywords
Data Resolution
Temporal Resolution:
annual
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Science Keywords
ISO Topic Category
Platform
Project
Access Constraints
None
Use Constraints
None
Ancillary Keywords
Data Set Progress
Originating Center
Data Center
Distribution
Distribution Media:
online ftp, www
Distribution Format:
ascii
Fees:
none
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Personnel
G.
W.K.
MOORE
Role:
INVESTIGATOR
Contact Address:
Department of Physics
University of Toronto
City:
Toronto
Province or State:
Ontario
Postal Code:
M5S 1A7
Country:
Canada
GERALD
HOLDSWORTH
Role:
INVESTIGATOR
Contact Address:
Arctic Institute of North America
University of Calgary
City:
Calgary
Province or State:
Alberta
Postal Code:
T2N 1N4
Country:
Canada
KEITH
ALVERSON
Role:
INVESTIGATOR
Contact Address:
PAGES International Project Office
City:
Bern
Postal Code:
CH-3011
Country:
Switzerland
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Related URL
Publications/References
Moore, G.W.K., G. Holdsworth, and K. Alverson, 2002, Climate change in the North Pacific region over the past three centuries Nature, 420, 6914, 401-403 (28 November 2002); doi:10.1038/nature01229 Holdsworth, G., H.R. Krouse and M. Nosal, 1992, Ice core climate signals from Mount Logan, Yukon A.D. 1700-1897, In: Climate ... Since A.D. 1500. Raymond S. Bradley and Philip D. Jones (eds.). Routledge. London and New York. pp. 483-504. Monaghan, M.C. and G. Holdsworth, 1990, The origin of non-sea-salt sulphate in the Mount Logan ice core, Nature 343:245-248. Holdsworth, G., H.R. Krouse, and E. Peake, 1988, Trace-acid ion content of shallow snow and ice cores from mountain sites in western Canada, Annals of Glaciology 10:57-62. Holdsworth, G. 1992 Ice cores as a source of long-term net precipitation data: a North American perspective, in Using hydrometric data to detect and monitor climatic change, Nat. Hydrol. Res. Institute, Saskatoon, Procedings of Symposium No. 8, 107-120 Holdsworth, G., 2001 Atmospheric teleconnection between Japan and the Saint Elias Mountains, Yukon, in Environmental Research in the Arctic 2000, Mem. NIPR, Tokyo,special issue No. 54, 161-168.
Creation and Review Dates
DIF Creation Date:
2003-04-10
Last DIF Revision Date:
2009-01-21
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