Transcript PowerPoint プレゼンテーション

WELCOME TO WEATHERGEEK
WEATHER STUDY ZONE
Produced by WEATHERGEEK
ENTERING THE STUDY ZONE
PRESSURE
H
High pressure this blue H means high pressure usually SUNNY SKIES/
CLEAR SKIES/ NICE WEATHER
WIND FLOW AROUND A HIGH PRESSURE IS AS FOLLOWS
H
You will see Northerly winds out in front of the High and (clockwise all the way around).
L
Low pressure this red L means low pressure usually CLOUDY/RAINY/DREARY/
NOT SO NICE WEATHER
(Weatherman love to see the red L means that our job will be fun filled not so boring
as with the blue H.
WIND FLOW AROUND A LOW PRESSURE IS AS FOLLOWS
L
You will see Southerly winds out in front of the Low and
(counterclockwise all the way around).
FRONTAL TYPES!!!
FRONTAL TYPES
THE COLD FRONT: The cold front its mission consist of bringing in
colder air to the region its moving into. Usually replaces a warmer air mass.
THE WARM FRONT: The warm front its mission consist of bringing
in milder air to the region its moving into. Usually replaces a cool air masses.
THE STATIONARY FRONT: This front can bring in either warmer or
cooler air depending on which area influences your station.
THE OCCLUEDED FRONT: This is when a area of Low pressure has
bottomed out or should we say begins to dissipate two types you have warm/cold.
THE COLD FRONT IN ACTION
A
B
The Cold Front in action: In the above diagram we see the cold front is dividing two stations.
The following would be a example of possible weather these two stations could see.
Station A(cold front has passed the station)
Overcast Possible T-storms/slowly clearing/ Northwesterly Winds/Slowly increasing pressure
Station B(in the warmer air mass in front of the cold front)
Overcast T-storms/ Southwesterly Winds/Decreasing Pressure
Sharp temperature changes
Moisture Content
Wind shifts
Pressure changes
Clouds/Precipitation
THE WARM FRONT IN ACTION
B
A
The Warm Front in action: In the above diagram we see the warm front is dividing two stations.
The following would be a example of possible weather these two stations could see.
Station A(warm front has passed through the station)
Showery/rapidly clearing/ Southwesterly winds/Slowly gradually increasing pressure
Station B(in the cooler air in advance of the warm front)
Showery precipitation / Northwesterly Winds/gradually decreasing in pressure
Sharp temperature changes
Moisture Content
Wind shifts
Slight pressure changes
Clouds/Precipitation
THE TWO OCCLUDED FRONTS
COLD OCCLUSION
1. VERY COLD
VERY COLD
2.
WARM
WARM
COLD
WARM OCCLUSION
COOL
WARM
COLD
COLD
WARM
WARM
3.
COOL
VERY COLD
COLD
COLD
STATIONARY FRONT
CP
MT
REMEMBER WITH THE
STATIONARY FRONT NO
MOVEMENT.
# If at any time the warmer air
Starts to dominate it will become
A warm front.
# If cold air dominates it will become
A cold front.