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Glacier National Park Summer Drought Reconstruction Entry ID: NOAA_NCDC_PALEO_2006-008 |
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Summary
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Abstract:
This data set consists of a reconstruction of summer drought based on tree-ring chronologies in Glacier National Park. Reconstructed parameter is Mean Summer Deficit (precipitation - potential evapotranspiration [Thornthwaite, 1948] for June-August) at Kalispell, Montana on the boundary of Glacier National Park. Abstract Instrumental climate records suggest that summer precipitation and winter snowpack in Glacier National Park (Glacier NP), Montana, vary significantly over decadal to multidecadal time scales. Because instrumental records for the region are limited to the twentieth century, knowledge of the range of variability associated with these moisture anomalies and their impacts on ecosystems and physical processes are limited. The authors developed a reconstruction of summer (June-August) moisture variability spanning A.D. 1540-2000 from a multispecies network of tree-ring chronologies in Glacier NP. Decadal-scale drought and pluvial regimes were defined as any event lasting 10 yr or greater, and the significance of each potential regime was assessed using intervention analysis. Intervention analysis prevents single intervening years of average or opposing moisture conditions from ending what was otherwise a sustained moisture regime. The reconstruction shows numerous decadal-scale shifts between persistent drought and wet events prior to the instrumental period (before A.D. 1900). Notable wet events include a series of three long-duration, high-magnitude pluvial regimes spanning the end of the Little Ice Age (A.D. 1770-1840). Though the late-nineteenth century was marked by a series of >10 yr droughts, the single most severe dry event occurred in the early-twentieth century (A.D. 1917-41). These decadal-scale dry and wet events, in conjunction with periods of high and low snowpack, have served as a driver of ecosystem processes such as forest fires and glacial dynamics in the Glacier NP region. Using a suite of paleoproxy reconstructions and information from previous studies examining the relationship between climate variability and natural processes, the authors explore how such persistent moisture anomalies affect the delivery of vital goods and services provided by Glacier NP and surrounding areas. These analyses show that regional water resources and tourism are particularly vulnerable to persistent moisture anomalies in the Glacier NP area. Many of these same decadal-scale wet and dry events were also seen among a wider network of hydroclimatic reconstructions along a north-south transect of the Rocky Mountains. Such natural climate variability can, in turn, have enormous impacts on the sustainable provision of natural resources over wide areas. Overall, these results highlight the susceptibility of goods and services provided by protected areas like Glacier NP to natural climate variability, and show that this susceptibility will likely be compounded by the effects of future human-induced climate change. |
Related URL
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Link:
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Description: ftp access to drought reconstruction data Link: VIEW RELATED INFORMATION Description: Access to documentation and data |
Geographic Coverage
| N: 48.2 | S: 48.2 | E: -114.31 | W: -114.31 |
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Data Set Citation
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Dataset Originator/Creator:
Pederson, G.T., S.T. Gray, D.B. Fagre, and L.J. Graumlich
Dataset Title: Glacier National Park Summer Drought Reconstruction Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-008 Dataset Release Date: February 2006 Dataset Release Place: Boulder, CO Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology Other Citation Details: NOAA/NCDC Paleoclimatology Program Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/mon... |
Temporal Coverage
| Start Date: 1540-01-01 |
| Stop Date: 2000-12-31 |
Paleo_Temporal_Coverage
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Paleo Start Date:
500 ybp
Paleo Stop Date: 0 ybp Chrono Unit: |
Location Keywords
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CONTINENT
> NORTH AMERICA
> UNITED STATES OF AMERICA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MONTANA |
Data Resolution
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Temporal Resolution:
annual
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Science Keywords
| ATMOSPHERE >ATMOSPHERIC PHENOMENA >DROUGHT [Definition] |
| PALEOCLIMATE >LAND RECORDS >TREE RINGS [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >DROUGHT/PRECIPITATION RECONSTRUCTION [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
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Project
| PAGES >Past Global Changes, IGBP [Information] |
Keywords
| drought reconstruction |
| tree ring chronologies |
| Glacier National Park |
| decadal-scale drought |
Data Set Progress
| COMPLETE |
Originating Center
| NOAA/NCDC |
Data Center
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/
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Distribution
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Distribution_Media:
online ftp
Distribution_Format: ascii Fees: none |
Personnel
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GREGORY
T.
PEDERSON Role: INVESTIGATOR Email: gpederson at usgs.gov Contact Address: Big Sky Institute Montana State University City: Bozeman Province or State: MT Postal Code: 59717 Country: USA |
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STEPHEN
T.
GRAY Role: INVESTIGATOR Phone: (406) 994-7023 Email: sgray at montana.edu Contact Address: Big Sky Institute Montana State University City: Bozeman Province or State: MT Postal Code: 59717 Country: USA |
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DANIEL
B.
FAGRE Role: INVESTIGATOR Phone: 406-888-7922 Fax: 406-888-7990 Email: dan_fagre at usgs.gov Contact Address: USGS-NRMSC Science Center, c/o Glacier National Park City: West Glacier Province or State: Montana Postal Code: 59936-0128 Country: USA |
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LISA
J.
GRAUMLICH Role: INVESTIGATOR Phone: (406) 994-5178 Fax: (406) 994-5122 Email: lisa at peak.mrc.montana.edu Contact Address: Mountain Research Center Montana State University - Bozeman City: Bozeman Province or State: MT Postal Code: 59717-3120 Country: USA |
Publications/References
Pederson, G.T., S.T. Gray, D.B. Fagre, and L.J. Graumlich. 2006.
Long-Duration Drought Variability and Impacts on Ecosystem Services: A Case
Study from Glacier National Park, Montana. Earth Interactions, Volume 10,
Paper 4, January 2006.
Long-Duration Drought Variability and Impacts on Ecosystem Services: A Case
Study from Glacier National Park, Montana. Earth Interactions, Volume 10,
Paper 4, January 2006.
Creation and Review Dates
DIF Creation Date:
2006-03-13
Last DIF Revision Date:
2006-03-13
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