Presentation is loading. Please wait.

Presentation is loading. Please wait.

Layers of the Atmosphere. Today’s Objectives Today’s Objectives 1. Identify the layers of the Earth’s atmosphere. 2. Describe the layers of the Earth’s.

Similar presentations


Presentation on theme: "Layers of the Atmosphere. Today’s Objectives Today’s Objectives 1. Identify the layers of the Earth’s atmosphere. 2. Describe the layers of the Earth’s."— Presentation transcript:

1 Layers of the Atmosphere

2 Today’s Objectives Today’s Objectives 1. Identify the layers of the Earth’s atmosphere. 2. Describe the layers of the Earth’s atmosphere. 3. Diagram and label the layers of the atmosphere with temperature and composition. Students will be able to:

3

4 Troposphere – 0-10 miles Troposphere – 0-10 miles The layer we walk around in Most airplanes fly here Where most weather occurs Height varies due to solar energy Low at poles, higher over equator

5 Troposphere – 0-10 miles Troposphere – 0-10 miles -3.5ºF per 1000 feet (-6.4ºC per 1000 m) Air gets colder with altitude 18ºC (56ºF) at surface -58ºC (-50ºF) at upper limit ambient atmospheric lapse rate (ESL)

6 Tropopause – ~10 miles Tropopause – ~10 miles Divides troposphere and stratosphere The height at which the temperature stops decreasing. Temperature can reach -70ºF Above 90% of total atmosphere

7

8 Stratosphere – miles Stratosphere – miles Why the inversion? Lower limit mixes with troposphere to form the jet stream (115+ mph) Air gets warmer with altitude This is called a temperature inversion The Ozone layer

9 Stratosphere – miles Stratosphere – miles High concentration found around 15 miles high Absorbs most of the Sun’s harmful ultraviolet rays. Absorption raises the temperature The Ozone layer

10 Stratopause – 30 miles Stratopause – 30 miles Divides stratosphere and mesosphere STOPS The height temperature STOPS increasing. Temperature can reach 40ºF 1 mb (millibar) of pressure Above 99.9% of total atmosphere

11

12 Again, temperature decreases as elevation increases. This is due to no ozone and molecules being far apart Can reach temperatures as low as -130ºF Mesosphere – miles Mesosphere – miles Why?

13 Mesopause – 50 miles Mesopause – 50 miles Divides mesosphere and thermosphere The 2 nd height at which the temperature stops decreasing. Temperature can reach -130ºF

14 the “Hot Layer” Oxygen atoms absorb energetic solar rays, warming the air Reaches around 2,700ºF Thermosphere – miles Thermosphere – miles Protects us from meteors and obsolete satellites

15 Auroras occur in this layer Thermosphere – miles Thermosphere – miles

16 Upper reaches of atmosphere So little gravity that atoms are able to shoot off into space Range 570ºF to over 3,000ºF Exosphere – 120+ miles Exosphere – 120+ miles Satellites and Space Shuttle fly

17

18 Ionosphere Ionosphere Not really a layer…but a region

19 Ionosphere Ionosphere

20 Radiosonde Instrument used to measure: vertical profile of air temperature up to ~20 mil

21 Radiosonde


Download ppt "Layers of the Atmosphere. Today’s Objectives Today’s Objectives 1. Identify the layers of the Earth’s atmosphere. 2. Describe the layers of the Earth’s."

Similar presentations


Ads by Google