Flashcards: Weather


Instrument used to measure air pressure
Lowest layer of the atmosphere
Cold, moist air mass
Instrument used to measure wind velocity
Metric unit of air pressure
Lowest pressure air mass
Temperature at which the relative humidity is 100%
Warm, dry air mass
Line on a map connecting all points of equal barometric pressure
Almost all moisture is in this layer of the atmosphere
Line on a map connecting all points of equal temperature
Temperature at which air is saturated
Going from solid to vapor or vapor to solid without going through the liquid phase.
Only form of precipitation that does not begin as a liquid
This determines wind speed
Highest pressure air
This causes surface ocean currents
Moisture content of the atmosphere
The amount of water vapor in the air compared to the maximum amount the air can hold (expressed as a percent)
Insturment used to determine relative humidity and dewpoint
Warm, dry air mass
Air movement around a high pressure system in the N. hemisphere
Air movement around a low pressure system in the N. hemisphere
Non-metric unit of air pressure
Sea level air pressure
When a cold front slips under a warm front
Path followed by most storms
Vapor to liquid
Winds are named for........
Warm, moist air
Frozen rain
Interface between air masses with different characteristics
Dry bulb temp. = wet bulb temp.
200 mpg current of air near the top of the troposphere
Maritime polar or maritime arctic
Warm & moist
The dew point
Continental, tropical
Dew point
Pressure gradient
Cold and dry (cP or cA)
Relative humidity
Psychrometer (possibly a sling psychrometer)
Continental, tropical (cT)
Clockwise, away from the center
Counterclockwise, towards the center.
Inches of mercury (Hg)
One atmosphere (atm)
Occluded front
Storm track
The direction they come FROM
Maritime, tropical (mT)
Relative humidity = 100% or Air is at the dewpoint
Jet stream