ADX Weather and Environmental Factors 3

Question 1

What weather condition is indicated when a rawinsonde observation shows a sharp temperature inversion and very low dew point spread at a low altitude?

Accepted Answer

A stable layer that suppresses convection and may trap pollutants

Answer

Conditions favorable for thunderstorm development

Answer

Rapidly improving VFR conditions

Answer

Upper-level jet stream activity

Question 2

A dispatcher planning a transoceanic flight reviews a Significant Weather Prognostic Chart. Which level of chart covers flight levels from FL250 to FL630?

Accepted Answer

High-Level Significant Weather Prog

Answer

Low-Level Significant Weather Prog

Answer

Mid-Level Significant Weather Prog

Answer

Surface Analysis Chart

Question 3

Which type of fog forms when cold air moves over a warm water surface, causing rapid evaporation and condensation?

Accepted Answer

Steam fog

Answer

Radiation fog

Answer

Advection fog

Answer

Upslope fog

Question 4

During pre-departure weather evaluation, a dispatcher finds that the destination has a METAR showing OVC003 and 1/4SM FG. The filed alternate is 85 NM away with METAR showing BKN020 and 3SM HZ. What is the dispatcher's primary concern?

Accepted Answer

Whether the alternate meets the regulatory weather minimums for filing as an alternate

Answer

The destination weather is above minimums so no concern exists

Answer

The hazardous inflight weather between departure and destination

Answer

Whether fog will affect the departure airport

Question 5

What is the significance of a 'cap' or 'capping inversion' in thunderstorm forecasting?

Accepted Answer

It suppresses convection until sufficient heat breaks through, often causing explosive severe storm development

Answer

It permanently prevents thunderstorm formation

Answer

It only affects thunderstorms above FL300

Answer

It causes widespread stratiform precipitation

Question 6

Which term describes the phenomenon where an aircraft accumulates ice on its airframe from supercooled large water droplets (SLDs) that extend beyond the protected surfaces?

Accepted Answer

Freezing drizzle icing / SLD icing

Answer

Rime icing

Answer

Glaze icing

Answer

Frost accumulation

Question 7

A dispatcher notes a METAR reporting 'FZRA' at the destination. Which weather condition does this represent, and why is it operationally significant?

Accepted Answer

Freezing rain — liquid rain that freezes on contact with aircraft surfaces below 0°C

Answer

Frozen rain pellets that bounce off the aircraft

Answer

Rain that freezes only on the runway surface

Answer

Rain forecast to freeze overnight after landing