Atmosphere Flashcards
A characteristic of the stratosphere is
relatively small changes in temperature with an increase in altitude.
Stratosphere:
Small
The average height of the troposphere in the middle latitudes is
37,000 feet
Troposphere:
37
Which feature is associated with the tropopause?
Abrupt change in temperature lapse rate
Troposphere:
Abrupt
Stability can be determined from which measurement of the atmosphere?
Ambient lapse rate.
Atmosphere measurements 📐 :
ALR
The general characteristics of unstable air are
good visibility, shower precipitation, and cumuliform-type clouds.
Unstable:
- 👍 VIS
- Shower P
- Cum ☁️
Which is a characteristic of stable air?
Stratiform clouds.
Stable:
Strat ☁️
Frontal wave normally form on
slow moving cold fronts or stationary fronts.
Frontal 🌊:
- Slow Moving Cold Front
- OR Stationary Fronts
Which are characteristics of unstable cold air mass moving over warm surface?
Cumuliform clouds, turbulence, and good visibility.
Unstable Cold over Warm:
- Cum ☁️
- Turbulence
- 👍 VIS
Which weather phenomenon is always associated with the passages of a frontal system?
A wind change.
Phenomenon o/Frontal system passage:
🌬️ Wind Change
An air mass is a body of air that
covers an extensive area and has fairly uniform properties of temperature and moisture.
Air Mass:
- Covers Extensive Area
- Has Uniform Temp & Moisture
A jet stream is defined as wind of
50 knots or greater
Jet Stream:
50 KTS OR >
The strength and location of the jet stream is normally
weaker and farther north in the summer
Jet Stream:
- Weaker & Farther North
- In the Summer
What is the approximate rate unsaturated air will cool flowing upslope (dry adiabatic lapse rate)?
3.0*C
Dry ALR:
3 C
The general characteristics of the troposphere is
an overall decrease in temperature with an increase in altitude.
Character o/Troposphere:
- Decrease in Temp
- With Increase in Altitude
A good indication of the stability of an airmass is
the form and structure of the clouds.
Stability o/Air Mass:
- Form
- & Structure
