GEOS 212 Week 5 notes
GEOS 212 Week 5 notes GEOS 212
Popular in Introduction to Oceanography
Popular in Tier 2 Gen Ed
This 2 page Class Notes was uploaded by madelinef on Wednesday September 21, 2016. The Class Notes belongs to GEOS 212 at University of Arizona taught by Joellen Russell in Fall 2016. Since its upload, it has received 5 views. For similar materials see Introduction to Oceanography in Tier 2 Gen Ed at University of Arizona.
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Date Created: 09/21/16
Four things that happen to sunlight entering water o Warms ocean o Reflects out- gives ocean color because it is reflecting out o Photosynthesis- drives them o Evaporation- drives them The sun is never directly overhead if you are in mid-latitude but in summer it is more direct. Longest day of the year is most direct, shortest day of the year is at the most angle o This is why the earth is warmer at the equator because its more direct. Colder at poles because more indirect. o The equator is warmer than the pole because? Direct heating at the equator o North pole always points at north star- this is why we have seasons Longest day- June 21 Shortest day- December 21 Fall equinox- September 22 Spring equinox- march 20 Basics of color and light o We see the light that reflects off of objects o The sky and ocean are blue for the same reason! When we look at an item, the color of the item is reflected and every other color is absorbed into the item. So water absorbs every color except for blue light. It does not want to absorb blue light! o Hydrologic cycle convinces liquid to be in vapor phase so it is a gas. Evaporation is high energy, medium energy particles are pulled back into water and lower energy particles remain as a liquid. How much of this energy do you need? Atmosphere mores heat around very efficiently by moving water around. o 1m down, 45% of light remains. Mostly cool colors o 10m- 16% of light remains, mostly purple and blue o 100 m- 1% of light remains- pretty much just blue o at 100 m down a red fish would appear… gray because there’s no light. Why the oceans are blue o Sunlight carries all the colors and the water absorbs all the colors except for blue so that is why it appears blue. The atmosphere moves heat around by moving the water around (540 calories/gram of water) Energy is stored where evaporation occurs in the tropics Energy is released where vapor turns back into liquid (clouds/rain) Moving water moves the heat around! Evaporation/condensation= 540cal/gram Warming= 1cal/gram per degree
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