Podcast
Questions and Answers
Which atmospheric property is primarily affected by adiabatic temperature change?
Which atmospheric property is primarily affected by adiabatic temperature change?
- Density (correct)
- Humidity
- Pressure
- Temperature
What is the key factor influencing the variation of temperature in the atmosphere?
What is the key factor influencing the variation of temperature in the atmosphere?
- Humidity
- Dew point temperature
- Adiabatic expansion (correct)
- Thermodynamic properties
In the atmosphere, which property is governed by the lapse rate?
In the atmosphere, which property is governed by the lapse rate?
- Density
- Temperature (correct)
- Pressure
- Humidity
What atmospheric property does the equation of state primarily describe?
What atmospheric property does the equation of state primarily describe?
Which atmospheric property is most affected by changes in humidity?
Which atmospheric property is most affected by changes in humidity?
What is the primary outcome of an increase in pressure in the atmosphere?
What is the primary outcome of an increase in pressure in the atmosphere?
How does dew point temperature relate to humidity in the atmosphere?
How does dew point temperature relate to humidity in the atmosphere?
What causes variations in density at different altitudes in the atmosphere?
What causes variations in density at different altitudes in the atmosphere?
How does humidity interact with adiabatic temperature changes in the atmosphere?
How does humidity interact with adiabatic temperature changes in the atmosphere?
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Study Notes
Atmospheric Introduction
- The atmosphere is the gaseous envelope that surrounds the Earth, extending up to 500 km above.
- It is composed of different gases, with N2 (79%) and O2 (20%) being the most abundant.
Atmospheric Properties
- Temperature: measures the thermal or internal energy of molecules, closely related to pressure, volume, and density.
- Density: measures the 'heaviness' of an object or substance, related to the type of material and how closely packed it is.
- Pressure: force exerted over a given area or object, due to gravity or motion, connected to other atmospheric properties.
- Humidity: measures the amount of moisture in the air, affecting comfort and cloud formation.
Composition of Atmosphere
- N2 (79%) and O2 (20%) are the most abundant gases.
- O3 (ozone) is a triatomic form of oxygen that absorbs ultraviolet solar radiation.
- Water vapor (up to 4% of the atmosphere) is responsible for cloud formation, precipitation, and is a greenhouse gas.
- Carbon dioxide (CO2) is a greenhouse gas emitted by industrial processes, contributing to climate change.
Thermodynamic Properties of Atmosphere
- Temperature is related to volume, pressure, and density in the atmosphere.
- Adiabatic expansion and lapse rate are important thermodynamic properties of the atmosphere.
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