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Transcript 
Condensation, Clouds
Clouds and
Condensation,
andPrecipitation
Precipitation
1
Condensation and Dew Example
Why does
water
condense on
glass?
RW Christopherson. Geosystems 4ed. Figure 7-8a
2
Temperature Inversion and Dew
LW
Dew
Strahler and Strahler. 2000. Physical Geography.
3
Frost on a window in winter
Ahrens. Meteorology, 7ed. 2002
4
Fog
• Evaporation
• Radiation
• Advection
5
Steam Fog over Lake Michigan 1998
http://raf.atd.ucar.edu/~dcrogers/Lakeice/photos/jan13photos.html
6
Steam (Evaporation) Fog
Cooler Air
Steam Fog
Warmer, Humid Air
Warmer Water
7
Radiation Fog
Ahrens. Meteorology, 7ed. 2002
8
Radiation Fog Process
LW
McKnight and Hess. Physical Geography. 2002
9
‘Tule’ (Radiation) Fog
Aguado and Burt. 2000. Understanding Weather and Climate
10
Advection Fog
Ahrens. Meteorology, 7ed. 2002
11
What do Clouds tell you?
McKnight and Hess. Physical Geography. 2002
12
Visual Cloud
Classification
McKnight and Hess.
Physical Geography.
2002
13
Lifting by Cold Front
RW Christopherson. Geosystems 4ed. Figure 8-10
14
Cirrus
RW Christopherson. Geosystems 4ed. Figure 7-22
15
Thunderhead
Videodiscovery: The Atmosphere
16
Cumulus Congestus
Ahrens. Meteorology, 7ed. 2002
17
Cumulus Humilis (Behind front)
Ahrens. Meteorology, 7ed. 2002
18
Lifting by Warm Front
RW Christopherson. Geosystems 4ed. Figure 8-12
19
Cirrus
RW Christopherson. Geosystems 4ed. Figure 7-22
20
Cirrostratus
Ahrens. Meteorology, 7ed. 2002
21
Altostratus
Ahrens. Meteorology, 7ed. 2002
22
Low-Lying Stratus
Ahrens. Meteorology, 7ed. 2002
23
Nimbostratus
Ahrens. Meteorology, 7ed. 2002
24
Animation of Lenticular Cloud
EPOD - Donald Collins, Warren Wilson College
25
Mammatus
Ahrens. Meteorology, 7ed. 2002
26
Turbulence
Videodiscovery: The Atmosphere
27
Annual Precipitation
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/wayne/pentad.precip.html
28
Precipitation
• Cloud Droplets
• Droplets to Raindrops
• Precipitation forms
29
Size Comparison
Ahrens. Meteorology, 7ed. 2002
30
Growth of a Raindrop within a rain cloud
Videodiscovery: The Atmosphere
31
Raindrop Formation
• Warm Clouds
– Condensation
– Collision Coalescence
• Cold Clouds
–
–
–
–
Bergeron Process
Riming
Aggregation
(Collision –
Coalescence)
32
Warm Clouds
Collision and
Coalescence
Ahrens. Meteorology, 7ed. 2002
33
Precipitation in Cold Clouds
Ahrens. Meteorology, 7ed. 2002
34
Bergeron Process 1
Ahrens. Meteorology, 7ed. 2002
35
Bergeron Process 2
Ahrens. Meteorology, 7ed. 2002
36
Riming
Ahrens. Meteorology, 7ed. 2002
37
Aggregation
Ahrens. Meteorology, 7ed. 2002
38
Snow Crystals and Temperature
Yoshinori Furukawa, Institute of Low Temperature Science
39
Snow line over West Texas
http://epod.usra.edu/archive/images/2005_snow_line.jpg
40
Cloud Formation Over Lakes 2/4/02
http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=7281
41
Hailstone
NOAA
42
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