09/28 Atmospheric currculation
Density stratification
>
surface zone : shallow , well-lit
low-density ,
in contact w/ atmosphere
> pycnocline : density barrier
>
deep zone : deep ,
dark cold
, ,
dense ,
away from the atmosphere .
Atmosphere Atmospheric Gases
> the atmosphere is a volume of
gases water vapor ,
and airborne
,
particles surrounding the Earth .
~
weather : the state of the
atmosphere e the specific time/place ·
> climates overall long-term ang. Of
weather in the area .
·
density is greatly influenced
Air
by temperature and water content :
↳ warmer air= less dense than cold air
ehumidair Fessdensethan aa
changes in pressure :
↳ becomes cooler when expanded
↳ becomes warmer When compressed
·
warm air can hold more water vapor than cold air .
# eat Budget Latitude variations
·
poles-greater area low angle +
,
larger travel difference.
·
Tropics smaller area vertical angle
-
,
+ smallest travel distance
>
Areas of the Earth of equal size
receive different amounts of solar
overall ,theplanet is inbalance eneficit radiation as they become more oblique
to the sun .
Atmospheric circulation
warm alr-less dense rises
cool air >
- more dense sinks
, The Coriolis Effect
>
Anything moving on winds & climate Belts
Earth experiences a
deflection caused by
the Earth's rotation .
In the northern
hemisphere ,
an object
is deflected to the
its motion
right of .
> In the southern hemisphere ,
the
object is deflected to the left .
> poles are cold deserts
>
Fc =
(2wsind)u > EX : Africa is mostly dry because evaporation
> Coriolis force is zero & the equator happens a lot around 30N . However there
,
and max & the poles are lots of precipitation and little winds
~
It is an apparent force due to Earth's so that area is very green .
rotation Charac-
teristics
Idealized of wind
circulation Belts 3
3 - cell Bounda-
Model -
> vies
Ideal vs Actual
the pretty
symmetrical
warm air arrows aren't
-
sinks
·
holds more always correct.
rises
water than most of the
o
they move !
&
e
sinks cold air >
- time ,
·
V
rises
>
right before
it rains & the
Higher
air cools after
Density rain .
~
namesa)
winds
Density stratification
>
surface zone : shallow , well-lit
low-density ,
in contact w/ atmosphere
> pycnocline : density barrier
>
deep zone : deep ,
dark cold
, ,
dense ,
away from the atmosphere .
Atmosphere Atmospheric Gases
> the atmosphere is a volume of
gases water vapor ,
and airborne
,
particles surrounding the Earth .
~
weather : the state of the
atmosphere e the specific time/place ·
> climates overall long-term ang. Of
weather in the area .
·
density is greatly influenced
Air
by temperature and water content :
↳ warmer air= less dense than cold air
ehumidair Fessdensethan aa
changes in pressure :
↳ becomes cooler when expanded
↳ becomes warmer When compressed
·
warm air can hold more water vapor than cold air .
# eat Budget Latitude variations
·
poles-greater area low angle +
,
larger travel difference.
·
Tropics smaller area vertical angle
-
,
+ smallest travel distance
>
Areas of the Earth of equal size
receive different amounts of solar
overall ,theplanet is inbalance eneficit radiation as they become more oblique
to the sun .
Atmospheric circulation
warm alr-less dense rises
cool air >
- more dense sinks
, The Coriolis Effect
>
Anything moving on winds & climate Belts
Earth experiences a
deflection caused by
the Earth's rotation .
In the northern
hemisphere ,
an object
is deflected to the
its motion
right of .
> In the southern hemisphere ,
the
object is deflected to the left .
> poles are cold deserts
>
Fc =
(2wsind)u > EX : Africa is mostly dry because evaporation
> Coriolis force is zero & the equator happens a lot around 30N . However there
,
and max & the poles are lots of precipitation and little winds
~
It is an apparent force due to Earth's so that area is very green .
rotation Charac-
teristics
Idealized of wind
circulation Belts 3
3 - cell Bounda-
Model -
> vies
Ideal vs Actual
the pretty
symmetrical
warm air arrows aren't
-
sinks
·
holds more always correct.
rises
water than most of the
o
they move !
&
e
sinks cold air >
- time ,
·
V
rises
>
right before
it rains & the
Higher
air cools after
Density rain .
~
namesa)
winds
