Monday, October 31, 2011

Ocean Currents and Climate Change

Ocean and atmosphere are inextricably linked. As global climate change alters wind, precipitation and temperature patterns worldwide, ocean currents will reflect these changes in often unpredictable ways. For example, increasing wind speeds arising from larger land-ocean temperature differences may drive stronger upwelling which will change near shore ecosystems and may cause hypoxic dead zones  
in some areas. Another key factor that influences ocean currents is the density of seawater. Both temperature and salinity contribute to seawater density, thus local changes in temperature and the magnitude of freshwater inputs from rivers and streams can alter near shore ocean currents.

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