Glacial Recession in the Cloud Peak Wilderness and the ...

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3 Νοε 2013 (πριν από 4 χρόνια και 1 μήνα)

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Glacial Recession in the Cloud Peak
Wilderness

and the Effects on
Streamflow

Mitchell Fyock; Dr. Carl
Legleiter

Methods

Powder River Pass Snotel
Measuring Station

Similar USGS Stream Gage

Sources of Data

Central
Temporoid

Annual Center of Water Mass

Calculated by: CT=Σ(
t
i
Q
i
)/
ΣQ
i

t = time (in days) from the beginning of the water year (Oct. 1
st



Sept. 30
th
)

Q = mean daily discharge (Cubic Meters per Second)

Results

Variables of Interest

Date of Peak Snow/Water Equivalent

Central Temporoid

CT=Σ(
t
i
q
i
)/
Σq
i

Cloud Peak
Glacier 1966

Cloud Peak
Glacier 1976

Image
Analysis

Cloud Peak Glacier 1980

Cloud Peak Glacier 2001

64% Decrease in Area
over 21 Year Period

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