Temperatures and Ocean Currents:
A current occurs when a liquid or gas moves in a definite direction. Ocean currents result from several factors: heat from the sun, wind, salinity, land masses being a barrier, ad the earth's rotation. Surface currents can cause weather and temperature changes around the world.
El Nino:
Every 3 to 7 years, the trade winds weaken, surface currents moving toward Indonesia stop, and cold water/nutrients stay at the bottom of the ocean. This phenomena known as El Nino, has profound effects on the world, including, droughts, floods, mudslides, catastrophic events, death and destruction.
Labrador Current: A cold current which forms off the coast of Greenland, brings cooler temperatures to the east coast of the United States.
Gulf Stream: A warm current, which forms adjacent to the Gulf of Mexico, near the equator. This warm current will bring warm temperatures to the east coast of the United States.