Urban heat island: Difference between revisions
Jump to navigation
Jump to search
imported>Ed Poor (gradual accumulation of warming) |
imported>Ed Poor m (straighten out curly brace) |
||
| Line 1: | Line 1: | ||
The term "heat island" describes built up areas that are hotter than nearby rural areas. The annual mean air temperature of a city with 1 million people or more can be 1.8–5.4°F (1–3°C) warmer than its surroundings. | The term "heat island" describes built up areas that are hotter than nearby rural areas. The annual mean air temperature of a city with 1 million people or more can be 1.8–5.4°F (1–3°C) warmer than its surroundings. [http://www.epa.gov/heatisland/index.htm] This temperature gradient can gradually increase; for example, from 1945 to 1990 San Antonio has apparently gotten 3°C warmer than nearby New Braunfels. [http://www.swri.org/3pubs/ttoday/fall97/heat.htm] | ||
Revision as of 14:16, 26 January 2009
The term "heat island" describes built up areas that are hotter than nearby rural areas. The annual mean air temperature of a city with 1 million people or more can be 1.8–5.4°F (1–3°C) warmer than its surroundings. [1] This temperature gradient can gradually increase; for example, from 1945 to 1990 San Antonio has apparently gotten 3°C warmer than nearby New Braunfels. [2]