Current Atmosphere Composition (gases)

Nitrogen (N2) 78% (MRT=100 my)

Oxygen (O2) 21% (MRT=3000y)

Argon (Ar) 1%

Important “other” gases:

Water vapor (H2O) life;weather;heat transfer;greenhouse gas

sources: volcanoes, evaporation, respiration

sinks: plants, animals, precipitation (from atmosphere)

Carbon dioxide (CO2) life;greenhouse gas (370ppm)

sources: fires;volcanoes;decay;respiration;combustion

sinks: photosynthesis; precipitation (from ocean)

Sulfur dioxide (SO2) acid rain

sources: fires;sea spray;combustion

Nitrogen oxides (N2O, NO, NO2) acid rain;greenhouse gas;ozone

sources: fire;fertilizers;combustion

Ozone (O3) oxidizer;UV filter;greenhouse gas

sources: UA-photochemical;LA-lightning/pollution

Scale	Absolute zero	Freezing Temp of Water	Boiling Temp of Water	Earth's Temperature
ºF		32
ºC	-273		100	15
K
F=Fahrenheit; C=Celsius; K=Kelvin
F= 1.8C + 32
C= (F - 32) x .556
K= C + 273

Can you draw complete global circulation (showing arrows of air/wind movement) based on knowing?

1-Air rises at equator (0° latitude), and sinks at poles (90° latitude)

2-Three convection cells exist in each hemisphere

3-Air flowing along surface response to “Coriolis Effect”

4-Deserts occur where air is sinking