The Physics of Extreme Weather -...
Transcript of The Physics of Extreme Weather -...
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The Physics of Extreme Weather
Perry SamsonUniversity of Michigan
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Quick QuizRank Causes of Death Per Million in USA*
1. Alcohol Use2. Drug Use3. Firearm accidents4. Mibrobial Agents5. Motor Vehicle Crashes6. Obesity7. Terrorist acts8. Tobacco Use9. Weather related disaster
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Quick QuizRank Causes of Death Per Million in USA*
1. Alcohol Use2. Drug Use3. Firearm accidents4. Mibrobial Agents5. Motor Vehicle Crashes6. Obesity7. Terrorist acts8. Tobacco Use9. Weather related disaster
1450
1333
283
250
143
97
57
2
0.00001
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Quick Quiz IIRank Causes of Death By Weather Events
1. Cold2. Flood3. Hail4. Heat5. Hurricane6. Lightning7. Thunderstorms
9. Winter/Cold8. Tornado
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1. Cold2. Flood3. Hail4. Heat5. Hurricane6. Lightning7. Thunderstorms8. Tornado9. Winter
Quick Quiz IIRank Causes of Death By Weather Events
Tornadoes
Flood
Winter
Heat
Lightning
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Characteristic # deaths reported # deaths expected Excess deaths
Age Group
0-64
65-74
75-84
≥85
Sex
Male
Female
Location of death
In hospital
Out of hospital
Socioeconomic level
High
Medium High
Medium Low
Low
840 870 -30
1,150 1,084 66
1,919 1,484 435
1,985 1,362 623
2,689 2,379 310
3,205 2,421 784
2,223 2,088 135
1,170 954 216
824 778 46
1,227 11,195 32
1,144 1,016 128
789 670 119
Number of deaths by selected characteristics(Rome, Italy, June-August 2003)
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100
51
19
6204Albedo = 30/100
Shortwave
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100
51
19
6204Albedo = 30/100
Shortwave
+30
+51Evaporation
-23
+23
+6
+19
Infrared Lost
-117
+111
Infrared Gained
-96
-96
+64
-64
Convection
-7
+7
Longwave
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The specific heat capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature.
Heat supplied = mass x specific heat capacity x change in temperature
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0
10
20
30
40
50
0 20 40 60 80 100
Tem
pe
ratu
re R
ise (
°C)
Reflectivity (%)
Black Paint
Galvanized Steel
Aluminum CoatingRed Clay
White Cement
White Paint
White Cement
Optical White
Green Asphalt
White Asphalt
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Snowstorms, Blizzards, Nor’easters, Squall Lines
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Pressure Gradient Force
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High Pressure
Low Pressure
WARM
COOL
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Coriolis Force
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Coriolis Force
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MIA
SUV
ASH
CIN
DTW
SSM
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MIASUVASHCINDTWSSM
55°F55°F55°F55°F55°F55°F1000 mb
850 mb
700 mb
500 mb
300 mb
1. Draw Isoheights
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MIASUVASHCINDTWSSM
55°F55°F55°F55°F55°F55°F1000 mb
850 mb
700 mb
500 mb
300 mb
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MIASUVASHCINDTWSSM
80°F70°F60°F50°F40°F30°F1000 mb
850 mb
700 mb
500 mb
300 mb
2. Draw Isoheights
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MIASUVASHCINDTWSSM
80°F70°F60°F50°F40°F30°F1000 mb
850 mb
700 mb
500 mb
300 mb
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MIASUVASHCINDTWSSM
80°F80°F75°F40°F35°F30°F1000 mb
850 mb
700 mb
500 mb
300 mb
3. Draw Isoheights
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MIASUVASHCINDTWSSM
80°F80°F75°F40°F35°F30°F1000 mb
850 mb
700 mb
500 mb
300 mb
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http://www.youtube.com/watch?v=_cl0aw87LqA
THUNDERSTORMS
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T =32°C
Evaporative Cooling
500 m
1000 m
1500 m
2000 m
T =27°C
T =22°C
T =17°C
T =12°C
T =26°C
T =21°C
T =18°C
T =15°C
T =12°C
Virga
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TORNADOES
Summer Vacation
Manitoba F5
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Tornadoes
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Tornadoes
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Tornadoes
No Data
1 - 8
9 - 17
18 - 30
31 - 55
56 - 118
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Tornadoes
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Tornadoes
0
200
400
600
800
1000
1200
1400
1950
1954
1958
1962
1966
1970
1974
1978
1982
1986
1990
1994
1998
2002
NU
MB
ER
OF T
OR
NA
DO
S
ANNUAL10 YEAR AVERAGE
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Tornadoes
Permanent HomeMobile HomeBusinessOther/ UnknownOutside OpenSchoolVehicle
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Tornadoes
Conditions
1. Convective Instability
2. Wind Shear
3. Trigger
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Tornadoes
Moist Layer
Inversion
Dry Layer
TempDew Point
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Tornadoes
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Tornadoes
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Tornadoes
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