6 The Oceans And Local Climate Specific HeatHeat from Ocean CurrentsUpwelling/Downwelling
7 Specific HeatDefinition: Specific heat is how much energy is needed raise the temperature of something.HIGH the specific heat: heats up and cools down SLOWLY.Water has a very high specific heat. That means it needs to absorb a lot of energy before its temperature changes. But likewise, it takes a long time to cool down wants that energy is absorbed.LOW the specific heat: heats up and cools down QUICKLY.
8 Specific heatSpecific Heat of common things:MaterialSpecific heatLiquid Water4.18Water vapor2.11Dry air1.01Basalt0.84Granite0.79Iron0.45Lead0.13Which heat’s up the quickest?
9 Rice Heat Pack vs. Hot Water Bottle Has anyone changed their mind?
10 Why do we care?The oceans are WATER and have a HIGH SPECIFIC HEAT. They heat up slowly, but cool off slowly as well.Oceans have an AMAZING abilityto store heat!
11 Take a look at another two locations at nearly the same latitude Nations Online Project:
13 Average Jan Temperatures Seattle: High 47 F , Low 37FBismarck: High 23 F , Low 2FFrom Weather channel:
14 The ocean tends to stores heat during the summer months, and slowly releases it during the winter. This is why coastal regions tend to have milder climates than areas that are far inland.Continental interiors, far from the ocean, experience greater extremes of temperature than coastal regionsWinterSummer
16 The ocean near Seattle helps to keep the temperature more even. From Weather channel:The lowest recorded temperature in Bismarck was -45°FThe lowest recorded in Seattle temperature was 10°F
17 No Water, large extremes Desert day/night cycle movie
18 The windy coast – Ocean breezes explained! Daily differences in heating & cooling in land vs water leads to on and offshore breezes!Day: Land heats upOcean is ConstantNight:Land cools downOcean is Constant
24 North Pacific Sea Surface Temperature (SST) Map. Water temperature bulletin for the North Pacific on 13 April Credits: Mercator Ocean.
25 North Atlantic Sea Surface Temperature (SST) Map. North Atlantic sea surface temperature from satellites for January Source: NOC/UK Met-Office OSTIA data.
26 Lets compare two place On the Atlantic Ocean. London, EnglandHalifax, Nova Scotia
27 Lets compare two places near the ocean Halifax, Nova ScotiaLatitude 44.67o NAverage Jan tempHigh 29oFLow 13oFLondon, EnglandLatitude ° NAverage Jan TempHigh 5ooFLow 41oF
28 Notice: this is an average of the daily highs and lows for each month. The sea is colder around Halifax than around London in the winter. This leads to colder winter temperatures in Halifax. In Aug, the sea temperature for both places is the same. AND, therefore, the air temperature in both places is about the same.
42 Upwelling areas are highly productive areas! Although coastal upwelling regions account for only one percent of the ocean surface, they contribute roughly 50 percent of the world's fisheries landings.NOAA:
45 The Oceans And Local Climate Specific Heat:land and ocean differencescoastal climate is milder:warmer in winter/cooler in summerHeat from Ocean Currents affects a region’s climateUpwelling/Downwelling affects temperature as well fish habitat.