Tuesday, October 21, 2008

effects

More details and secondary effects of global warming :
Increasing global temperatures are the primary effects of global warming. However they are causing a broad range of additional, secondary effects :
Sea levels are rising due to thermal expansion of the ocean, in addition to melting of land ice.
Amounts and patterns of precipitation are changing. The total annual power of hurricanes has already increased markedly since 1975 because their average intensity and average duration have increased (in addition, there has been a high correlation of hurricane power with tropical sea-surface temperature).
Changes in temperature and precipitation patterns have also global effects on extreme weather events: They increase the frequency, duration, and intensity of floods, droughts, heat waves, and tornadoes. Other effects of global warming include higher or lower agricultural yields, further glacial retreat, reduced summer stream flows, species extinctions. As further effects of global warming, diseases like malaria are returning into areas where they have been extinguished earlier.

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