Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry...
-
Upload
gabriella-rich -
Category
Documents
-
view
218 -
download
0
Transcript of Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry...
![Page 1: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/1.jpg)
Colorado Plateau
Is Desertification in the Southwest Affecting
the Colorado
Snowpack?
Chris Landry CSAS – Silverton
Tom Painter, Andy Barrett NSIDC
Jason Neff CU Geosciences
![Page 2: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/2.jpg)
March 25, 2006 near Shiprock
Desert Dust Emission
Possible sources:
• ‘natural’ processes
• drought
• dryland farming
• recreation
• overgrazing
![Page 3: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/3.jpg)
Dust Deposition in Colorado Mtns.
1999
2004
2003
March 31, 1999
![Page 4: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/4.jpg)
Trajectory Analyses
NOAA Hysplit Model
48 hour back-trajectories
![Page 5: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/5.jpg)
Dugout Ranch Wind Speed
![Page 6: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/6.jpg)
Radiative effects of desert dust deposits in alpine snow TH Painter1, C Landry2, J Neff3, AP Barrett1
1National Snow and Ice Data Center, 2Center for Snow and Avalanche Studies, 3CU-Boulder, Dept of Geological Sciences
CSAS
Collaborative Research funded by the National Science Foundation Atmospheric Sciences,
Geography, and Hydrologic Sciences Grants #ATM-0432327 to NSIDC and ATM-0431955 to the CSAS
![Page 7: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/7.jpg)
Study Site – Senator Beck Basin
Operated by Center for Snow and Avalanche Studies, Silverton, CO
![Page 8: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/8.jpg)
May 21, 2004Photo courtesy JPL (Ian McCubbin)
![Page 9: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/9.jpg)
Swamp Angel Study Plot 11,050’
Senator Beck Study Plot
12,200’
![Page 10: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/10.jpg)
Measurements• Snowpack: depth, SWE (density), stratigraphy,
grain size & type, temperature, wetness, coverage
• Climatology: air temp, RH, wind speed & direction, precipitation, pressure, dust event trajectories
• Radiation: incoming LW, SW; reflected SW; IR ‘skin’ temperature, snow surface albedo
• Sediment & Dust: mineralogy, concentrations
• Hydrological: temperature, EC, streamflow
![Page 11: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/11.jpg)
Albedo Measurement
![Page 12: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/12.jpg)
Snow Albedo
0.78
126 w/m2
0.60
224 w/m2
April 4, 2003 - San Juan Mountains
![Page 13: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/13.jpg)
Snow Pits
![Page 14: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/14.jpg)
May 2004
May 2005
![Page 15: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/15.jpg)
Observed Snowmelt Swamp Angel Study Plot, Red Mountain
Pass, CO
• 15 inches SWE May 20, 2003
• 0 inches SWE May 28, 2003
![Page 16: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/16.jpg)
May 24, 2006
![Page 17: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/17.jpg)
June 4, 2006
![Page 18: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/18.jpg)
May 17, 2005
![Page 19: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/19.jpg)
May 27, 2005
![Page 20: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/20.jpg)
Spectral albedo SWESnowmelt flux
![Page 21: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/21.jpg)
![Page 22: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/22.jpg)
![Page 23: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/23.jpg)
Preliminary Findings …• Dust deposition appears to significantly decrease snow albedo on a regional scale ...
• The ‘doubling’ of absorbed solar radiation appears to increase snowmelt rates and likely results in a higher amplitude and shorter duration snowmelt hydrograph …
![Page 24: Colorado Plateau Is Desertification in the Southwest Affecting the Colorado Snowpack? Chris Landry CSAS – Silverton Tom Painter, Andy Barrett NSIDC Jason.](https://reader036.fdocuments.in/reader036/viewer/2022062423/56649f3a5503460f94c58a81/html5/thumbnails/24.jpg)
Next Steps …
• Formalize findings on albedo effects ...
• Develop modeling of ‘dust-on-snow’ effects on basin-scale snowmelt timing, intensity, and duration …