Physical Causes and/or Accelerators of Droughts

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  • Physical Causes and/or accelerators of Droughts.
    • The ITCZ
      • Where the two trade winds meet there is heavy precipitation.
        • It moves between the Tropics of Cancer and Capricorn.
          • Sometimes it does not move so far north or south.
            • Dry areas do not get the needed rainfall - drought.
    • El Nino and La Nina
      • El Nino causes trade winds to reverse.
        • Places that usually get a lot of rain, get a lot less - drought.
      • La Nina causes normal weather to become more extreme.
        • So if a country usually has little rainfall it now gets even less - drought.
    • Global Warming
      • Temperatures naturally heat up which means that more water is evaporated.


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