WEATHER WEATHER is… DAILY CHANGES OF THE EARTH’S ATMOSPHERIC VARIABLES ATMOSPHERIC VARIABLES INCLUDE… Temperature- measure of amount of heat in the air Humidity- measure of the amount of water vapor in the air Wind- movement of air across Earth’s surface Pressure- the amount of air pushing on Earth’s surface Cloud Cover- percentage of sky covered with clouds These variable determine the daily weather!
She’s standing in the troposphere According to ESRT the troposphere is the lowest layer of Earth’s atmosphere The troposphere has… -all the water vapor -all the clouds -all the weather -almost all the air
Atmospheric Structure
Atmosphere Ozone layer All weather, clouds most air
Atmospheric Composition Page 1 of ESRT: Average Composition Chart -What are the most abundant elements in the atmosphere? -78% Nitrogen -21% Oxygen -1% Argon, Helium and a few others…
Variable measurement Temperature is measured with a thermometer Wind speed is measured with an anemometer Wind direction measured with a wind vane…
Variable measurement Humidity is measured with a psychrometer Air pressure is measured with an barometer
Temperature Temperature is Measured in 3 different scales… -Celsius (C) -Fahrenheit (F) -Kelvin (K)
Pressure Pressure is Measured in 3 different scales… -millibars (mb) -inches (in Hg) -atmospheres (atm) One atmosphere = ____mb and ____ in