Ch. 6 Review - Meteorology

As a clear parcel of air ascends dry adiabatically,

- its relative humidity increases - its saturation vapor pressure decreases - its temperature drops

If the air temperature is 12 °C and the vapor pressure is the same as the saturation vapor pressure, the relative humidity is

100%

A lapse rate of ______ Celsius degrees per 1000 meters is unstable for unsaturated (clear) air parcels.

11

If the mixing ratio of a parcel of air is 2 grams per kilogram and its saturation mixing ratio is 6 grams per kilogram, the relative humidity is ______ percent.

33.3

If the water vapor content of a parcel of air is 7.5 g/kg, its dew point temperature will be approximately _________ .

? (not 15)

A parcel of air originates at sea level with a temperature of 10 °C. If this parcel is lifted and cools at the dry adiabatic rate, what will its temperature be when it reaches a height of 700 mb?

? (not 38)

In an isothermal temperature profile, the air temperature

Does not change with altitude

Unstable air ______ vertical motion of air parcels.

Enhances

A rain shadow is situated downwind from the ______ slopes of a high mountain barrier.

Leeward

In winter, the precipitable water value is likely to be highest in ________.

Miami, FL

A snow cover tends to ______ the overlying air, thus inhibiting convection.

Stabilize

Conditional stability indicates that an air layer is ______________ .

Unstable for cloudy and stable for clear air parcels

Conditional stability indicates that an air layer is

Unstable for saturated and stable for unsaturated air parcels

If the air temperature drops with altitude such that the actual lapse rate (sounding) is 7 Fahrenheit degrees per 1000 feet, the air layer is ______ for saturated (cloudy) air parcels and ______ for unsaturated (clear) air parcels.

Unstable.....unstable

When air near the surface in a place is warmed, the overlying air tends to ____________ ..

becomes less stable

As the temperature of a saturated (cloudy) air parcel falls, its relative humidity ______.

does not change

Rising parcels of saturated (cloudy) air do not cool as rapidly as rising parcels of unsaturated (clear) air because ___________ .

expansional cooling of saturated air is partially compensated for by release of latent heat.

As the temperature rises over the course of a clear, calm day, the relative humidity usually ______ .

falls

______ on a Stüve diagram are isobars.

horizontal lines

Rising air temperature causes the saturation mixing ratio to ______

increase

The saturation vapor pressure ______ with rising air temperature.

increases

Cumulus clouds are ______ likely to build into thunderstorm clouds when the air temperature profile (sounding) indicates unstable conditions.

most

If the mixing ratio of a parcel of air is 6 grams per kilogram and the relative humidity is 25 percent, the saturation mixing ratio is ______ grams per kilogram

none of these is correct

If the mixing ratio of a parcel of air is 6 grams per kilogram and the relative humidity is 25 percent, the saturation mixing ratio is ______ grams per kilogram.

none of these is correct

______, annual precipitation is greater than annual evapotranspiration.

on the continents

The ___________ is the maximum pressure that water vapor molecules could exert if the air were saturated.

saturation vapor pressure

______ air tends to suppress convection and cloud development.

stable

Stable air ______ vertical motion of air parcels.

suppresses

The windward side of mountain ranges are relatively ______ compared to the leeward side.

wet