Circulation in the Atmosphere. Circulation in the atmosphere. Balance of forces in the fluid motion. Forces due to planetary rotation Centrifugal force Geoid Coriolis force Deflection of moving fluid Pressure gradient force From high to low pressure.
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Circulation in the Atmosphere
Deflection of air flow due to Coriolis force
Balanced flow: geostrophic balance
Now we are in the Southern Hemisphere, what would be the direction of the geostrophic flow?
Tropical cyclone: an intense low pressure system
Air circulates around the low pressure
Flow under radial pressure gradient
Warm, moist air from tropical ocean
Graphic illustration by National Hurricane Center
What are the ways that the Earth’s atmosphere and ocean interact?
Wind-driven ocean currents
Implications to the salinity of seawater?
Warm SST, low SSS
Warm SST, high SSS
Sea surface temperature and salinity are controlled by air-sea interaction
Sensible heat flux
Latent heat flux
Ocean heat transport
(in October after midterm)