Atmosphere Flashcards
A characteristic of the stratosphere is
relatively small changes in temperature with an increase in altitude
The average height of the troposphere in the middle latitudes is
37,000 feet
Which feature is associated with the tropopause?
Abrupt change in temperature lapse rate
Stability can be determined from which measurement of the atmosphere?
Ambient lapse rate.
The general characteristics of unstable air are
good visibility, shower precipitation, and cumuliform-type clouds.
Which is a characteristic of stable air?
Stratiform clouds.
Frontal wave normally form on
slow moving cold fronts or stationary fronts.
Which are characteristics of unstable cold air mass moving over warm surface?
Cumuliform clouds, turbulence, and good visibility.
Which weather phenomenon is always associated with the passages of a frontal system?
A wind change.
An air mass is a body of air that
covers an extensive area and has fairly uniform properties of temperature and moisture.
A jet stream is defined as wind of
50 knots or greater
The strength and location of the jet stream is normally
weaker and father north in the summer
What is the approximate rate unsaturated air will cool flowing upslope (dry adiabatic lapse rate)?
3.0*C
The general characteristics of the troposphere is
an overall decrease in temperature with an increase in altitude.
A good indication of the stability of an airmass is
the form and structure of the clouds.
