Climate

Tropics- Between 23. 5 degrees South latitude and 23 Tropics- Between 23.5 degrees South latitude and 23.5 degrees North latitude generally warm year-round

Temperate Zones- 23.5 and 66.5 degrees North and South latitude Temperatures in these regions are moderate

Polar Zones- 66.5° to 90° North and South latitude Nearly always cold

Tropical Climates Constant high temperatures 600 cm of rain Tropical rain forests

Tropical Climates Tropical Wet rains year round Tropical wet and dry has dry winter due to continental air masses

Dry Climates Continental Tropical air dominates Precipitation is low Vegetation is scarce

Dry Climates Arid- Low precipitation and high evaporation; Vegetation is scarce Semi-arid- More humid than arid border between wet climates

Mild Climates Humid Subtropical Marine West Coast Mediterranean

Mild Climates Humid Subtropical- Southeastern United States, warm muggy weather prevails during warmer months, dry cool conditions winter

Mild Climates Marine West Coast- Constant on shore flow of marine air creates mild winters and cool summers

Mild Climates Mediterranean- Warm summers due to lack of cool ocean currents with mild winters

Continental Climate Warm Summer Cool Summer Subarctic

Polar climates Less than 10 degrees Celsius; precipitation generally low

Heat Islands The climate is warmer than in surrounding rural areas increased cloudiness more total precipitation

Orbital Effect Climatic changes may be triggered by changes in earth’s axis and orbit becoming more elliptical closer to sun, temperatures become warmer

Natural Sources of Carbon Dioxide Volcanoes Forest Fires Animals