GEO 211 1st Edition Lecture 28 Outline of Last Lecture I Ocean currents A Caused by 1 Prevailing wind 2 Coriolis force 3 Ocean temperature salinity differences 4 Tides 5 Shoreline configuration B Gyres large scale ocean circulation caused by subtropical anticyclone Cold currents Warm currents C Importance of ocean currents 1 Exchange of energy between low and high latitudes 2 Sustaining global heat balance 3 Moderate climate weather conditions in some areas D Coasts with cold ocean currents experience 1 Frequent fog 2 Upwelling Outline of Current Lecture II El Nino and La Nina A El nino abnormal warming of the Pacific Ocean between South America and Australia and Indonesia in the equatorial region B La nina extensive below normal cooling of the central eastern Pacific Ocean III Air masses and fronts A Air mass large body of air that has a uniform weather characteristics particularly temperature and water vapor content B Source regions birthplace flat land surfaces with light winds These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Current Lecture II El Nino and La Nina A El nino abnormal warming of the Pacific Ocean between South America and Australia and Indonesia in the equatorial region Event occurs during Christmas season little boy or Christ child in Spanish 1st recognized by fishermen along the coasts of Ecuador and Peru During event warm equatorial waters pile up along Ecuador Peru coasts eastern Pacific Warm water block upwelling of color nutrient filled water along coast devastating the fish industry B La nina extensive below normal cooling of the central eastern Pacific Ocean Stronger trade winds push warm water westwards Reversal of surface atmospheric pressure between E W pacific is called Southern Oscillation III Air masses and fronts A Air mass large body of air that has a uniform weather characteristics particularly temperature and water vapor content B Source regions birthplace flat land surfaces with light winds Cover large land surfaces Air masses acquire characteristics of regions they develop Characteristics of air masses are slightly modified when they move to other regions
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