C14

3. A climatic event in which warm Pacific surface water moves eastward toward South America as trade winds weaken.
7. A recurring period of the year resulting from Earth's axial tilt and revolution around the Sun.
9. A standard climatic value calculated from at least 30 years of weather records.
10. The long-term increase in Earth's average surface temperature.
12. The process by which atmospheric gases absorb and reradiate thermal energy warming Earth.
13. The region between 23.5 degrees north and south latitude that receives relatively direct sunlight.
14. The study of Earth's climate and factors influencing past present and future climatic changes.

1. A localized climate that differs from the surrounding area's climate.
2. A historical period of unusually low sunspot activity associated with cooler climatic conditions.
4. A system that classifies climates according to average temperature and precipitation.
5. An urban area warmer than surrounding rural areas because buildings and pavement absorb heat.
6. Regions between 23.5 and 66.5 degrees latitude with generally moderate temperatures.
8. Regions extending from 66.5 degrees latitude to the poles with generally cold temperatures.
11. An extended period of cooler global temperatures and expanded glaciers and ice sheets.