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Meteorology 5550 |
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490 INSCC |
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TH 10:45 – 12:05 |
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John Horel |
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Jim Steenburgh |
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Understand the influence of the earth’s
orography upon weather and climate |
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First Half- John Horel |
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Geographical controls of mountain weather and
climate |
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Terrain-forced flows |
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Flow interaction with complex terrain |
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Second half- Jim Steenburgh |
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Orographically modified cyclones |
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Orographically trapped disturbances |
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Orographic precipitation |
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Invited presentations |
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Fire weather |
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Air quality |
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Avalanches |
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Surface transportation |
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40%: Homework, class participation, literature
reviews |
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20%: Participation and writeup of results from
field experiment |
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20%: 1st half quiz |
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20% 2nd half quiz |
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Mountain Meteorology. D. Whiteman. 2000. |
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Mountain Weather and Climate. R Barry. 1992. |
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Atmospheric Processes over Complex Terrain. W.
Blumen 1990. |
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Influence of Mountains on the Atmosphere. R.
Smith. 1979. Advances in Geophysics. 21. |
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Additional Reading |
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Many available on-line. To save trees, you are
to access them on-line from campus and print them as needed |
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http://ams.allenpress.com/amsonline/?request=index-html |
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First reading assignment: Barry, R. G. (1978): H. B. de Saussure:
the first mountain meteorologist. Bull. Amer. Meteor. Soc., 59, 702-5. |
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Summarize in a few paragraphs: (1) who Saussure
was; (2) how did he make the measurements and what were his results
regarding the decrease of temperature with height; (3) what other
contributions to mountain meteorology did he make? |
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Due: via email at beginning of class on Aug. 30.
Send to jhorel@met.utah.edu, Be prepared to discuss the reading during that
class. |
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Analysis of wind circulations on ski-jump slope |
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Weather permitting |
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Set up on Friday September 28 |
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Observations Saturday morning September 29 |
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Takedown in afternoon |
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Requires planning in advance by class to design
useful field project |
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Requires analysis of data after data collection
completed |
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September 10-12 |
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Useful presentations on local wind circulations
in Salt Lake Valley |
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Plan on attending a few hours at some point
instead of class on the 11th (and 13th?) |
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Common usage: |
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600 m or more of local relief defines a mountain |
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Less than 600m is a hill |
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High mountain/alpine areas (Troll 1973; Arct.
Alp. Res., 5, 19-27): |
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Relative to terrain features |
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Upper timberline |
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Snow line |
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Substantial modification of synoptic or meso
scale weather systems by dynamical and thermodynamical processes through a
considerable depth of the atmosphere |
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Recurrent generation of distinctive wx
conditions, involving dynamically and thermally induced wind systems,
cloudiness, and precipitation regimes |
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Slope and aspect variations on scales of 10-100
m form mosaic of local climates |
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(Barry 1992) |
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% mountains as fraction of total land surface
(land 30%) |
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0-1000 m
10% |
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1000-2000 m
3% |
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2000-3000 m
3% |
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> 3000 m 4% |
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Total 20% |
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Barry 1992 |
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%mountain as fraction of earth 6% |
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http://www.mteverest.com/ |
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http://www.mnteverest.net/ |
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http://www.m.chiba-u.ac.jp/class/respir/eve_e.htm |
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http://www.newton.mec.edu/Angier/DimSum/Him.Range
Pix.html |
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Height of Mt. Everest: 8848m |
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(http://www.m.chiba-u.ac.jp/class/respir/hyoko_e.htm) |
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Mt Washington |
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http://www.mountwashington.org/ |
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Storm Peak Laboratory |
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http://www.dri.edu/Projects/SPL/ |
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Latitude |
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Continentality |
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Altitude |
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Topography |
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Mountain-valley winds |
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Slope flows |
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Peter Sinks Experiment |
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VTMX |
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lake breeze |
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Buoyancy oscillations |
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Flow over vs. around obstacles |
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Kinetic and potential energy of flows |
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Mountain waves |
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Gravity wave drag |
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Trapped lee waves |
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Conceptual models |
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Observations |
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Numerical studies |
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Gap winds |
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Orography and the General Circulation |
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Mountain torque |
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Physiology of high altitude |
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Climate change at high altitude |
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Bring in a couple (to as many as you want)
of mountain and mountain weather
related photos |
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Be prepared to say a few words about 1-2 photos |
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If you’re willing to allow use of the photos for
this class and future classes, scan the images on the PC in Rm 480 (details
to be provided, but don’t leave them with me) |
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Due: whenever |
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(1) Find 5 interesting and useful internet web
pages related to mountain weather, mountain climates, or alpine
environments |
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(2) Send me in 1 email the web addresses with a
1-2 sentence description of the content of each page |
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(3) Provide at least 2 scientific, literary, or
artistic (music/art) definitions or descriptions of mountains. Not from
dictionaries |
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(4) Provide a reference/source for that
definition and send it in the same email as that used above |
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Due August 30 |
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