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EESA09H3- Final Exam Guide - Comprehensive Notes for the exam ( 22 pages long!)


Department
Environmental Science
Course Code
EESA09H3
Professor
Tanzina Mohsin
Study Guide
Final

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UTSC
EESA09H3
Final EXAM
STUDY GUIDE

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Wind lecture week 1
Four distinct layers in the atmosphere
Troposphere
o Temperature decreases as the altitude increases.
o Troposphere is the most imp one.
Stratosphere
o Temp increases as the altitude increases
o Ozone exists in this layer
Mesosphere
o Temp decreases with altitude increases
thermosphere
o Temp increases with increase in altitude
Clouds liquid constituent of the atmosphere (imp definition)
stratus lower layer clouds
Cumulus puffy clouds, medium level clouds
Cirrus high level
Nimbus rain clouds
Alto middle clouds
All the level of the clouds can be mixed
e.g. stratostratus; altostratus; nimbostratus; etc. (check ppt for other names)
Science of wind movement of air in an ordered fashion
we can see wind through the movement of the trees and dust
we can feel the wind
we can hear the wind
Causes of wind
difference in air pressure (pressure gradient)
air tends to flow from high pressure to low pressure creates a net force pressure
gradient force
with closely spaced isobars the wind is strong and vice versa
Atmospheric pressure
Vertical pressure 500 mb per 5640 meters/ 1 per 10 meter
Horizontal pressure 1 mb per 6000 meters
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Coriolis force fictitious force due to the rotation of the earth
causes an object to deflect the right in northern hemisphere and vice versa in the southern
hemisphere
The strength of the force is based on the distance from the equator lower at equator and
higher at the poles
Upper level wind (geostropic wind) 1km or above
Balance between the pressure gradient force and Coriolis force wind blows parallel to the
isobars this is called the geostropic wind
Geostropic wind is an upper level wind that blows parallel to the isobars as the result
of exact balance of the PGF and Coriolis force => definition
Surface wind below 1 km
balance between the PGF, Coriolis force and friction.
Surface wind bends
High pressure clockwise
Low pressure counter clockwise
Towards the center is called convergent
Away from the center is called divergent
Air mass classification
Air mass large body of air whose properties of temp and moisture are fairly
uniform in any horizontal direction at any given altitude
o Air mass cover many thousands of kilometers
Source region is where an air mass originates.
Original air mass classifications
1. Polar latitudes P
2. Tropical latitudes T
3. Land (continental) c
4. Water (maritime) m
New air masses classifications
1. Dry D
2. Moist M
3. Tropical T
4. Moderate M
5. Polar P
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