Across
- 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.
Down
- 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.