World climatic zones

Climate is the characteristic condition of the atmosphere near the earth's surface at a certain place on earth. It is the long-term weather of that area (at least 30 years). This includes the region's general pattern of weather conditions, seasons and weather extremes like hurricanes, droughts, or rainy periods. Two of the most important factors determining an area's climate are air temperature and precipitation.

http://www.geography.learnontheinternet.co.uk/images/worldclimate.gif

http://www.blueplanetbiomes.org/climate.htm