2 Oceans and Weather Blue Planet Earth is often called the Blue planet because 70% of the surface of the Earth is covered in waterFor this reason, oceans have a great influence on climate and weather
3 The Sun’s Energy Oceans effecting weather Remember this? Land and sea breeze are effected by convection cycleSea Breeze:Occurs during the day, wind blows from the ocean to the landLand Breeze:Occurs during the night, wind blows from the land to the ocean
4 Oceans and Weather Oceans effecting weather 1. Think about Texas… Which areas do you think tend to experience more breezes? Why?
5 Oceans and Weather Think Globally 2. What type of current runs by Texas?
6 Oceans and Weather Think Globally 3. How do you think that current will effect the coast of Texas?
7 Oceans and Weather Think Globally 4. What type of current runs by New York and other areas in the North East?
8 Oceans and Weather Think Globally How will that cold current effect weather in the North East?
9 Oceans and Weather Warm Currents Warm ocean water evaporates and leaves water particles in the atmosphereThis brings warm, humid, wet weather to regions on the coast of warm currents
10 Oceans and Weather Cold Currents Cold ocean water causes water temperature to decrease, absorbing the heat, and decreasing humidityCold ocean currents bring cold, wet weather to regions on the coast of cold currents
11 Oceans and Weather Hurricanes What are hurricanes? Hurricanes are violent storms that form over warm tropical water in a low pressure air mass.
12 Oceans and Weather Hurricanes How do they form? 1. Large amounts of warm ocean water evaporates over the ocean producing rain clouds2. As evaporating speed up due to warm ocean water, a low pressure air mass is formed under the hurricane that draws in other air masses surrounding the hurricane, creating a larger storm3. The cycle continues, and the large low pressure air mass begins to spin, create clouds, and bring heavy rain
13 Oceans and Weather Hurricanes What fuels a Hurricane? Hurricanes are fueled by warm, tropical water and low pressure airDo you think a hurricane can form over land?What causes a hurricane to die out?No, it needs warm tropical ocean water to evaporateIt has no more fuel: warm water to evaporate