CCM Forecasting and Operational Meteorology 3

Question 1

Which type of fog forms when warm, moist air advects over a cooler surface, cooling the air below its dew point?

Accepted Answer

Advection fog

Answer

Advection fog forms when warm, moist air moves horizontally over a cooler surface and is chilled to its dew point, commonly forming over coastal areas.

Question 2

A CCM providing forensic weather consulting reviews surface observations showing a dew point depression of less than 2°C and light winds at sunrise. What condition is most likely?

Accepted Answer

Dense fog or low stratus

Answer

A near-zero dew point depression means the air temperature is very close to saturation, and calm winds at sunrise favor fog or low stratus formation.

Question 3

The Lifted Index (LI) is calculated by comparing the temperature of a parcel lifted to 500 hPa against the environmental temperature at that level. A strongly negative LI (e.g., -6 or less) indicates:

Accepted Answer

Extreme atmospheric instability favorable for severe thunderstorms

Answer

A strongly negative Lifted Index means the lifted parcel is much warmer than the environment at 500 hPa, indicating extreme instability and severe thunderstorm potential.

Question 4

Which parameter on a Skew-T Log-P diagram represents the amount of energy a convective updraft must overcome before free convective ascent begins?

Accepted Answer

Convective Inhibition (CIN)

Answer

CIN (Convective Inhibition) is the negative buoyancy energy a parcel must overcome to reach the Level of Free Convection (LFC) and initiate free ascent.

Question 5

A meteorologist notices a 'dry slot' wrapping around the center of a developing cyclone in satellite water vapor imagery. This feature is associated with:

Accepted Answer

An intrusion of stratospheric dry air descending into the mid-troposphere during cyclone intensification

Answer

The dry slot in water vapor imagery marks a region of descending, dry stratospheric air that wraps into the cyclone, often coinciding with the most intense surface winds.

(CCM) Certified Consulting Meteorologist Practice Test

(CCM) Certified Consulting Meteorologist Practice Test

CCM Forecasting and Operational Meteorology 3