Mitchell Fyock; Dr. Carl Legleiter

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Presentation transcript:

Mitchell Fyock; Dr. Carl Legleiter Glacial Recession in the Cloud Peak Wilderness and the Effects on Streamflow Mitchell Fyock; Dr. Carl Legleiter

Methods

Sources of Data Powder River Pass Snotel Measuring Station Similar USGS Stream Gage

Central Temporoid Annual Center of Water Mass Calculated by: CT=Σ(tiQi)/ΣQi t = time (in days) from the beginning of the water year (Oct. 1st – Sept. 30th) Q = mean daily discharge (Cubic Meters per Second)

Results

Variables of Interest

Date of Peak Snow/Water Equivalent

Central Temporoid CT=Σ(tiqi)/Σqi

Image Analysis Cloud Peak Glacier 1976 Cloud Peak Glacier 1966

64% Decrease in Area over 21 Year Period Cloud Peak Glacier 1980 Cloud Peak Glacier 2001

Conclusion No longer are just the Poles experiencing Climate Change, the impacts can be seen at a local level Due to the effects of increasing temperatures, the Cloud Peak Glacier is beginning to disappear, and the effects of the loss of this free water supply can be seen As the glacier continues to recede and mountain snowpack continues to diminish over time, melt will occur earlier in the spring lowering the amount of available water in the late summer months

Sources Mote, P.W., Hamlet, A.F., Clark, M.P, & Lettenmaier, D.P. (2005). Declining mountain snowpack in western north america. Jacobs, J.J., & Brosz, D.J. (2000). Wyoming's water resources. Stewart, I.T., Cayan, D.R., & Dettinger, M.D. (2004). Changes in snowmelt timing in western north america under a . Climatic Change, 62, http://water.usgs.gov/ http://www.wcc.nrcs.usda.gov/snow/ http://www.ncdc.noaa.gov/sotc/get-file.php?report=global&file=map-blended-mntp&year=2010&month=3&ext=gif http://www.wcc.nrcs.usda.gov/siteimages/703.jpg http://nj.usgs.gov/StationPhotos/trn/01390500_gh.jpg