C01 - The Atmosphere Flashcards
Up to which height does the composition of gases in the Atmosphere remains the same?
60km.
Name the composition of dry air and their volume (5)?
- Nitrogen (78%).
- Oxygen (21%).
- Argon (0.95%).
- Carbon Dioxide (0.05%).
- Other Gases (Water Vapour).
Carbon Dioxide (CO₂) absorbs ‘____’ which acts as a heat source in the Atmosphere?
Long-wave Terrestrial Radiation.
Ozone (O₃) absorbs ‘____’ which acts as a heat source in the Atmosphere?
Short-wave Solar Radiation.
True or False. Pressure and Density increase with increasing Altitude?
False. It decreases.
The Atmosphere is divided into what layers (4)?
- Troposphere.
- Stratosphere.
- Mesosphere.
- Thermosphere.
The boundary between each Atmosphere layer is known as what?
Pause.
Which Atmosphere layer is where most weather phenomenon takes place?
Troposphere.
In the Troposphere, the Temperature ‘____’ with Altitude?
Decreases.
What is the Temperature Lapse Rate in feet and metres in the Troposphere (2)?
- 1.98°C per 1,000ft.
- 0.65°C per 100m.
What is the average height of the Troposphere?
11km.
In the Tropopause, the Temperature ‘____’ with Altitude?
No longer decreases.
What is the average height of the Tropopause over the Poles?
8km to 10km.
What is the average height of the Tropopause over the Equator?
16km to 18km.
What is the average height of the Tropopause over the Tropic of Cancer and Capricorn?
11km.
Where are Jet Streams found?
Tropopause Folds.
At what point (feet and metres) in the Tropopause does the Temperature remains constant (3)?
-56.5°C at 11km / 36,000ft.
True or False. The Stratosphere Temperature approximately remains constant with increasing height?
True.
What is the term given when Temperature remains constant with increasing Altitude?
Isothermal.
What special layer is found in the Stratosphere and what is the height of this layer (2)?
Ozone at 25km AMSL.
The Temperature of the Isothermal layer in the Stratosphere is ‘____’ until a height of ‘____ft’ (2)?
- -56.5°C.
- 65,000ft.
After the Isothermal layer, the temperature (increases/decreases) by ‘____’ per ‘____ft’ until what height (3)?
- Increases.
- 0.3°C per 1,000ft.
- 105,000ft.
At the top of the Stratopause, what is the Temperature?
0°C.
The Mesosphere Temperature ‘____’ with Height?
Decreases.
What is the height of the Mesosphere?
80km to 90km.
What happens to the Temperature of the Mesosphere?
Starts from 0°C and reduces to -90°C.
Air Pressure and Air Density ‘____’ with Altitude?
Decreases.
What is the MSL Temperature?
+15°C.
What is the MSL Pressure (3)?
- 1013.25 hPa.
- 29.92 inHg.
- 760 mmHg.
What is the MSL Density?
1.225km/m³.
