Transcript Weather Lab Powerpoint Charts

Weather Key Terms for Reference
Weather vs climate
Atmosphere
Temperature
Wind
Humidity
Precipitation
Air pressure
Fronts
What is Meteorology?
The study of the atmosphere,
weather and climate
The atmosphere is the air that surrounds the
earth - about 78% Nitrogen, 21% Oxygen and
other gasses like carbon dioxide and water
vapor.
Weather is the conditions of the atmosphere
at a given location for a short period of time.
It’s caused by the uneven heating of the
earth’s surface.
Climate is the average weather in an area,
from season to season and year to year.
Polar Climate Zone
Tropical Climate Zone
What conditions of the atmosphere
are used to describe our weather?
Temperature
Humidity
Wind
Precipitation
Air Pressure
Go to weatherNet to observe the weather in Rye today
5/10/05
12:38:52 AM
CURR
MIN/M
Temperature (°F)
59.6
43.1
/
60.7
Humidity (%)
63.0
61.5
/
97.8
Wind (mph)
ESE
5.7
ESE
10.7
0.00
No
Rain
Toda
y
0.00
30.0
5
30.0
4/
30.0
9
0.02
RATE
Current
ENT Conditions
AX
Daily Rain (in)
Pressure ("Hg)
0.6
0.8
Weather changes because of moving
An air mass is a large body of air with
similar temperature and moisture
properties throughout.
Air Mass
Temperature Moisture
Continental Polar (cP)
Cold
Dry
Continental Tropical (cT)
Hot
Dry
Maritime Polar (mP)
Maritime Tropical (mT)
Cool
Warm
Moist
Moist
Air mass movement is determined by upper
air currents and prevailing winds.
Continental Polar - Cold, dry air
Originate over Canada
Maritime tropical - Warm and Moist
Originate over the warm waters of the
tropics and Gulf of Mexico.
Air Masses Affecting The United States
The boundary between 2 air masses
is called a front
Warm front symbol
Precipitation usually occurs as a
front moves through
Cold front symbol
Follow the directions on the sheet to get to the lesson on
fronts on WeatherNet
When the new, advancing air mass is composed of warm
air, this boundary is called a warm front
If the advancing air mass is composed of cold air, this
boundary is called a cold front.
Because of its weight, the air presses
down on us and exerts pressure.
Pressure systems (Highs and Lows)
usually move west to east across the U.S.
Low pressure systems bring rain.
High-pressure systems bring bright, sunny
days with calm weather.
A weather map shows how weather changes through
the movement of air masses and fronts
Links to use to collect weather information:
Weather.com
https://weather.com/weather/today/l/USNY0996:1:US
Weather Underground
https://www.wunderground.com/us/ny/rye
You can search and try some additional sites if you need more
weather information