Presentation is loading. Please wait.

Presentation is loading. Please wait.

THE OCEANS AND LOCAL CLIMATE Susan Howard Research Associate Earth & Space Research www.esr.org.

Similar presentations


Presentation on theme: "THE OCEANS AND LOCAL CLIMATE Susan Howard Research Associate Earth & Space Research www.esr.org."— Presentation transcript:

1 THE OCEANS AND LOCAL CLIMATE Susan Howard Research Associate Earth & Space Research

2 Rice Heat Pack VS. Hot Water Bottle

3 Heating of Earth comes from Sun Heating of Earth comes from Sun This heating is UNEVEN This heating is UNEVEN The uneven heating causes the air and ocean to MOVE The uneven heating causes the air and ocean to MOVE Because the earth is rotating, the motion CURVES Because the earth is rotating, the motion CURVES REVIEW!

4 BASIC ATMOSPHERIC CIRCULATION

5 BASIC OCEAN CIRCULATION

6 THE OCEANS AND LOCAL CLIMATE Specific Heat Specific Heat Heat from Ocean Currents Heat from Ocean Currents Upwelling/Downwelling Upwelling/Downwelling

7 Definition: Specific heat is how much energy is needed raise the temperature of something. SPECIFIC HEAT HIGH the specific heat: heats up and cools down SLOWLY. LOW the specific heat: heats up and cools down QUICKLY.

8 Specific Heat of common things: SPECIFIC HEAT MaterialSpecific heat Liquid Water4.18 Water vapor2.11 Dry air1.01 Basalt0.84 Granite0.79 Iron0.45 Lead0.13 Which heats up the quickest?

9 Rice Heat Pack VS. Hot Water Bottle Has anyone changed their mind?

10 The oceans are WATER and have a HIGH SPECIFIC HEAT. They heat up slowly, but cool off slowly as well. WHY DO WE CARE? Oceans have an AMAZING ability to store heat!

11 TAKE A LOOK AT ANOTHER TWO LOCATIONS AT NEARLY THE SAME LATITUDE Nations Online Project:

12 DAILY HIGH AND LOW TEMPERATURE

13 Seattle: High 47 F, Low 37F Bismarck: High 23 F, Low 2F From Weather channel: Average Jan Temperatures

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 regions Summer Winter

15 OCEAN SEA SURFACE TEMPERATURES AT NEAH BAY

16 The lowest recorded temperature in Bismarck was -45°F The lowest recorded in Seattle temperature was 10°F From Weather channel: The ocean near Seattle helps to keep the temperature more even.

17 NO WATER, LARGE EXTREMES DESERT DAY/NIGHT CYCLE MOVIEDESERT 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 up Night: Land cools down Ocean is Constant

19 SEA BREEZE MOVIE

20 THE OCEANS AND LOCAL CLIMATE Specific Heat Specific Heat Heat from Ocean Currents Heat from Ocean Currents Upwelling/Downwelling Upwelling/Downwelling

21 BASIC OCEAN CIRCULATION

22 Some of the currents are moving warm water – and some are moving cool water From

23 Ga0JYFNg CURRENT MOVIE

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. Halifax, Nova Scotia London, England

27 LETS COMPARE TWO PLACES NEAR THE OCEAN Halifax, Nova Scotia Latitude o N Average Jan temp High 29 o F Low 13 o F London, England Latitude ° N Average Jan Temp High 5o o F Low 41 o F

28

29 LETS COMPARE TWO PLACE NEAR THE OCEAN

30 NORTH ATLANTIC TEMPERATURE MAP 2 o C = 35.6 o F 10 o C = 50 o F North Atlantic sea surface temperature from satellites for January Source: NOC/UK Met-Office OSTIA data.

31 THE WEST COAST HAS A DIFFERENT CLIMATE THAN THE EAST, PARTLY DUE TO THE OCEAN CURRENTS. /

32 Gulf stream and Weather movie EAST COAST WEATHER

33 CURRENT OCEAN TEMPERATURE IN THE PACIFIC NORTHWEST 13 o C = 55.4 o F 9.7 o C = o F

34 THE OCEANS AND LOCAL CLIMATE Specific Heat Ocean currents Upwelling/downwelling

35 UPWELLING AND DOWNWELLING Source: Ocean Basics: Temperature is not constant with depth. The deeper you go, the colder it gets!

36 THERE ARE MORE NUTRIENTS IN COLD/DEEPER WATER HIGH Nutrients LOW Nutrients

37 UPWELLING

38 upwelling-downwelling-and-other-random-acts-of-shrinkage

39 UPWELLING MOVING

40 circulation/

41 etailed_upwelling.html

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: welling/upwelling.html

43 SOMETIMES, WE GET DOWNWELLING TOO SOURCE:

44 UPWELLING & DOWNWELLING INFLUENCE : Temperature Fishing Weather patterns

45 THE OCEANS AND LOCAL CLIMATE Specific Heat: Specific Heat: land and ocean differences land and ocean differences coastal climate is milder: coastal climate is milder: warmer in winter/cooler in summer warmer in winter/cooler in summer Heat from Ocean Currents affects a regions climate Heat from Ocean Currents affects a regions climate Upwelling/Downwelling affects temperature as well fish habitat. Upwelling/Downwelling affects temperature as well fish habitat.


Download ppt "THE OCEANS AND LOCAL CLIMATE Susan Howard Research Associate Earth & Space Research www.esr.org."

Similar presentations


Ads by Google