Short term changes in snowpack due to weather sean sutherland
This presentation is the property of its rightful owner.
Sponsored Links
1 / 15

Short-term changes in snowpack due to weather Sean Sutherland PowerPoint PPT Presentation


  • 83 Views
  • Uploaded on
  • Presentation posted in: General

Short-term changes in snowpack due to weather Sean Sutherland. University of Colorado, Boulder EBIO 4100, Winter Ecology Spring 2011 Mountain Research Station Nederland, CO 9500 ft. . Background.

Download Presentation

Short-term changes in snowpack due to weather Sean Sutherland

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Short term changes in snowpack due to weather sean sutherland

Short-term changes in snowpack due to weatherSean Sutherland

  • University of Colorado, Boulder

  • EBIO 4100, Winter Ecology Spring 2011

  • Mountain Research Station

  • Nederland, CO 9500 ft.


Background

Background

  • The snowpack is largely affected by the winter time weather patterns that include the cold, wind and some radiation from the sun, trees and rocks and all of this impacts subnivean life (Marchand 1989).


Hypothesis

Hypothesis

  • Are you able to see changes in the snowpack layers over solely one week?

  • Is this change (if any) correlated with the winter weather processes?


Questions

Questions

  • What does the weather record say about the metamorphosis of the snowpack?

  • What does this particular snowpack mean for subnivean life?

  • What benefits and downfalls are associated with these animals both above and below the snowpack?


Methods and location

Methods and Location

Location

Methods

Two snow pits, one on 2/5 and 2/12, used snow pit kit.

Recorded Weather for week between dig dates.

Measured densities and temperatures every 10 cm with the height of the pack.

Examined different layers in each pack.

  • -Lodgepole, Aspen Forest North of C1 Meteorological Station (3022 meters/9912 feet).

  • Open clearing on North side of path, undisturbed.

  • Scarce amount of noticed animal activity due to new snow on first dig.


Limitations

Limitations

  • Time was a factor on the first dig.

  • Weather on first dig (lots of snow!)

  • Issues with scale.


Pit one 2 5 11 time of dig 12 45 pm

Pit One 2/5/11Time of Dig:12:45 pm

Air temperature: -6 degrees C

Cloudiness/Insolation: mostly cloudy

Precipitation: Heavy Snow, periods of lighter snowfall

Southwest winds

Surface Hardness: Powder, soft, sink to knees with no floatation.


Pit two 2 12 11 time of dig 12 30 pm

Pit Two 2/12/11Time of Dig: 12:30 pm

-Air Temperature: -3 degrees C

-Cloudiness/Insolation: Mostly sunny, clear skies with few clouds

-Precipitation: None

-Westerly Winds (Orographic)

-Surface Hardness: Soft, Sink to knees


Wind speed for 2 5 2 12

Wind Speed for 2/5-2/12


Peak wind gust

Peak Wind Gust


Temperature 2 5 2 12

Temperature 2/5-2/12


Subnivean life

Subnivean Life


Lesson points

Lesson Points

  • Winter Processes both above and below the snowpack impact the layers directly.

  • Impact in correlation with insulative properties of snow.

  • General trends of temperature, depth and density within layers of a pack.

  • Subnivean habitat is dependent on snowpack conditions (Casselman 2008).


Citations

Citations

  • General Sources:

  • Halfpenny, J.C., and Roy Douglas. Ozanne. Winter: an Ecological Handbook. Boulder, CO: Johnson, 1989. Print.

  • Marchand, P.J. Life in the Cold: an Introduction to Winter Ecology. Hanover, NH: University of New England, 1987. Print.

  • C1 Meteorological Site, Niwot Ridge


Citations1

Citations

  • Specific References:

  • Casselman, Bill. "Subnivian." 2008. Web. <http://www.billcasselman.com/unpub_two/subnivian.htm>.

  • CAIC: Colorado Avalanche Information Center. Web. 19 Feb. 2011. <http://avalanche.state.co.us/>.

  • "National Oceanic Atmospheric Association." NOAA - National Oceanic and Atmospheric Administration. Web. 19 Feb. 2011. <http://www.noaa.gov/>.

  • "Snowpack." Forest Service National Avalanche Center. Web. 19 Feb. 2011. <http://www.fsavalanche.org/Default.aspx?ContentId=6&LinkId=12&ParentLinkId=9>

  • "Subnivean (Life Under the Snow)." Maynard Life Outdoors. Web. 19 Feb. 2011. <http://www.maynardlifeoutdoors.com/2010/01/subnivean-life-under-snow.html>.


  • Login