Natural Climate Cycle

• are natural patterns of movement and temperature changes in the ocean that happen over time.


  Ocean oscillations
• ______ pump out clouds of dust and ash, which block out some sunlight. Because the ash particles are relatively heavy, they fall to the ground within about three months, so their cooling effect is very short-lived.


  Volcanic eruptions
• The main effect volcanoes have on the climate is short-term _______.


  Cooling
• The Earth has natural warming and cooling periods caused by

  Milankovitch cycles
• A well-known example of Ocean oscillations this is the (ENSO).

  El Niño-Southern Oscillation