ATMO 201 FINAL SCRIPT 2026 QUESTIONS
AND ANSWERS GRADED A+
◉Bergeron Process. Answer: a process that produces precipitation;
the process involves tiny ice crystals in a supercooled cloud growing
larger at the expense of the surrounding liquid droplets
-More molecules for a given temp can escape the water then the ice
crystalline surface
- It takes more molecules to saturate the air above water than above
ice
-Thus, at a given subfreezing temp, the saturation vapor pressure
over water is greater than that over ice
◉Graupel. Answer: Caused from ice crystals reaching terminal
velocity, falling, and colliding w/ supercooled water drops which
freeze to it, called accretion or riming
◉Snowflakes are produced by. Answer: aggregation
◉Precipitation in Cold Convective Clouds. Answer: - Starts quickly
(either C-C or bergeron)
- Most precipitation formed through accretion
, - Rain often starts as ice
◉Cold layered clouds. Answer: Nimbostratus and altostratus
- less liquid water, C-C is less effective
◉Warm stratus. Answer: usually just drizzle
◉Cloud Seeding. Answer: Inject cloud w/ small particles that act as
condensation/ice nuclei, triggering the precipitation process.
- Need clouds, seeding does not generate clouds
-Cold clouds w/ a low ratio of ice crystals to droplets best
-Man-made: Dry ice, silver iodide
◉Precipitation Types. Answer: Snow
Sleet
Freezing Rain
Rain
◉Rain. Answer: -In layered clouds w/ less intense updrafts, rain will
fall at a fairly steady rate and raindrop sizes will be uniform
- In a cumulonimbus cloud, there may be no rain in the updraft
portion but very heavy rain in the downdraft
AND ANSWERS GRADED A+
◉Bergeron Process. Answer: a process that produces precipitation;
the process involves tiny ice crystals in a supercooled cloud growing
larger at the expense of the surrounding liquid droplets
-More molecules for a given temp can escape the water then the ice
crystalline surface
- It takes more molecules to saturate the air above water than above
ice
-Thus, at a given subfreezing temp, the saturation vapor pressure
over water is greater than that over ice
◉Graupel. Answer: Caused from ice crystals reaching terminal
velocity, falling, and colliding w/ supercooled water drops which
freeze to it, called accretion or riming
◉Snowflakes are produced by. Answer: aggregation
◉Precipitation in Cold Convective Clouds. Answer: - Starts quickly
(either C-C or bergeron)
- Most precipitation formed through accretion
, - Rain often starts as ice
◉Cold layered clouds. Answer: Nimbostratus and altostratus
- less liquid water, C-C is less effective
◉Warm stratus. Answer: usually just drizzle
◉Cloud Seeding. Answer: Inject cloud w/ small particles that act as
condensation/ice nuclei, triggering the precipitation process.
- Need clouds, seeding does not generate clouds
-Cold clouds w/ a low ratio of ice crystals to droplets best
-Man-made: Dry ice, silver iodide
◉Precipitation Types. Answer: Snow
Sleet
Freezing Rain
Rain
◉Rain. Answer: -In layered clouds w/ less intense updrafts, rain will
fall at a fairly steady rate and raindrop sizes will be uniform
- In a cumulonimbus cloud, there may be no rain in the updraft
portion but very heavy rain in the downdraft
