GEOS 170A1 Lecture 18: 18-OceansandClimate
30 Mar 2017
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Ocean circulation starts with earth"s air circulation- Prevailing trade winds between 30n and 30s blow from east to west, pushing equatorial water from east to west globally. Ocean circulation would be just east to west except earth is rotating because the coriolis effect. How much heat is needed to change the temperature. Can absorb (and store) a lot of heat. 90% of earth"s heat is stored in the ocean. 10% of earth"s heat is stored in the air. Oceanic circulation moves warm water from the equator towards the poles, and takes heat with it. Gulf stream = 30% of sun"s energy in europe. Put 3 spoonfuls of salt in water, salinity of oceans. Salinity = 3. 5 parts per 100 (%) = 35 parts per 1000 (%) Ice is fresh water; leaves behind salt. Thinking about decreasing salinity, where does it rain more based on a map of salinity: Answer: deep water in the s atlantic.
