Presentation is loading. Please wait.

Presentation is loading. Please wait.

Atmosphere Layers separated by temperature variations. 1. Troposphere: 0-12 km -- where we live -- gets colder as you go up. -- all weather occurs here.

Similar presentations


Presentation on theme: "Atmosphere Layers separated by temperature variations. 1. Troposphere: 0-12 km -- where we live -- gets colder as you go up. -- all weather occurs here."— Presentation transcript:

1 Atmosphere Layers separated by temperature variations. 1. Troposphere: 0-12 km -- where we live -- gets colder as you go up. -- all weather occurs here. -- all water vapor occurs here.

2 Atmosphere 2.Stratosphere: km -- ozone layer --ozone absorbs short-wave (dangerous) radiation. --temperature gets warmer as you go up.

3 Annual Maximum Ozone Hole

4 Atmosphere 3.Mesosphere: km -- gets cold again as you go up. -- air is very thin. 4.Thermosphere: km -- gets warmer as you go up. -- last layer

5

6

7 Greenhouse Effect Atmosphere holds in heat radiated from Earth. - keeps Earth warm for us. Greenhouse Gas = chemical compound that allows short-wave radiation in, but, absorbs outgoing long-wave radiation (infrared/heat).

8 Greenhouse Gases 1.Water vapor - most abundant (largest amount). 2.Carbon dioxide (CO 2 ) - natural (plants) and man-made (oil and gas). 3.Methane (best absorber), CFCs (aerosol sprays…stay 100 years in atmosphere).

9 Greenhouse effect Increasing greenhouse gases trap more heat

10 Carbon Dioxide Carbon Dioxide (CO 2 ) levels historically precede and/or follow temperature rises. How do we know? Ice cores from Antarctica… 450,000 year record.

11 Natural CO 2 Range

12 Devastating Evidence

13

14

15 Computer models

16 Aspen, CO Forecast: Partly cloudy today High : 28°F Low: 13°F Increasing clouds over night. Colder tomorrow.

17 Why Should We Care?

18 Climate Climate = characteristic weather of a region. Ex. 100 year pattern. Major Elements: Temperature Precipitation (Moisture)

19 Problems Climate change = warmer, drier, wetter, more extreme weather. 3 to 7 feet rise in sea levels by end of century. Arctic temperature rising faster than others. Glacier melting = too much fresh water.

20

21 What Do Climate Scientists Think?


Download ppt "Atmosphere Layers separated by temperature variations. 1. Troposphere: 0-12 km -- where we live -- gets colder as you go up. -- all weather occurs here."

Similar presentations


Ads by Google