GEOG 102 Lecture 17: Geog 102: Week 10, Lec. 17
Document Summary
Affects lives of people who live there and people who live in areas beyond the tropics. People who live in tropics depend on subsistence agriculture. Astronomical definition: 23. 5 n to 23. 5 s where sun is at zenith position. 30 n to 30 s axes of subtropical high pressure cells. Region where there is no cold season. Region where daily range of temperature exceeds annual range. State of climate described using temperature, moisture, pressure, wind speed, wind direction, air density, and vertical velocity. Related by a set of physical laws that describe physical characteristics of air. Law of thermodynamics, pgf, vorticity, friction, coriolis force. Intensity of solar radiation received on earth"s surface is a function of the angle of incidence (angle of sun"s rays striking earth"s surface) When sun is in zenith position, solar radiation is most intense. Insolation (sun"s rays hitting earth) is highest in spring and fall equinox. Tropics: 12 hours of sunlight year round.
