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How would we know if Colorado’s climate is changing and how will it effect me? 1. How do we prove if climate change is occurring in Colorado? 2. Why should.

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Presentation on theme: "How would we know if Colorado’s climate is changing and how will it effect me? 1. How do we prove if climate change is occurring in Colorado? 2. Why should."— Presentation transcript:

1 How would we know if Colorado’s climate is changing and how will it effect me? 1. How do we prove if climate change is occurring in Colorado? 2. Why should we care?

2 Colorado Snow Pack Graph Source: ftp://ftp.wcc.nrcs.usda.gov/data/snow/snow_course/table/history/colorado/05j42s.txt

3 Average Annual Precipitation in Colorado 1900-2009 Source: Ray, A.J., Barsugli, J.J., & Averyt, K.B. (2008). Colorado Climate Change: A synthesis to support water resource management and adaptation. Downloaded from: http://cwcb.state.co.us/public-information/publications/Pages/StudiesReports.aspx Time (Year) Precipitation (Inches)

4 Average Annual Temperatures in Colorado 1900-2009 Time (Year) Temperature (Degrees Fahrenheit) Source: Ray, A.J., Barsugli, J.J., & Averyt, K.B. (2008). Colorado Climate Change: A synthesis to support water resource management and adaptation. Downloaded from: http://cwcb.state.co.us/public-information/publications/Pages/StudiesReports.aspx

5 Frequency of large forest wildfires vs. average temperatures during fire season (March-August) Source: Westerling, A.L., Hidalgo, H.G., Cayan, D.R., & Swetnam, T.W. (2006). Warming and earlier spring increase western U.S. forest wildfire activity? Science 313 (August), 940-943. Black Line: Mean temperature for March- August for western U.S. Red Bars: Annual frequency of large (9400 ha) western U.S. forest wildfires. The correlation between the two data sets is statistically significant after 1987. Annual time between first and last large- fire ignition, and last large-fire control.

6 Peak River Flow Days– South Platt River Basin

7 Arapaho Glacier, Boulder County, Colorado - comparison photos: 1898 (Photo J.R. Brackett): 1960 (Photo H. Waldrop) 2000 (Photo W.T. Pfeffer) Source: NSIDC/WDC for Glaciology, Boulder, compiler. 2002, updated 2009. Glacier photograph collection. Boulder, Colorado USA: National Snow and Ice Data Center/World Data Center for Glaciology. Digital media.

8 Rowe Glacier, Colorado - comparison photos Rowe Glacier, August, 25, 1916 (Photographer: W.T. Lee; NSIDC)NSIDC Rowe Glacier, September 18, 2004 (Photographer: Andy Leach; leachfam.com)leachfam.com Source: NSIDC/WDC for Glaciology, Boulder, compiler. 2002, updated 2009. Glacier photograph collection. Boulder, Colorado USA: National Snow and Ice Data Center/World Data Center for Glaciology. Digital media.

9 Temperature Changes and the Change in the Latitudinal Location of Bird Species


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