TAMU ATMO 201 Exam 2 with verified
correct answers
Dew - correct answer ✔✔liquid condensation on a surface; common during cold, calm nights;
long wave cooling of air to dew point
Frost - correct answer ✔✔similar to dew but from deposition rather than condensation; (vapor
to ice)
Frozen Dew - correct answer ✔✔black ice, dew that is then frozen
Haze - correct answer ✔✔forms at a relative humidity <100%; when aerosols are gyroscopic;
reduction of visibility; water seeking particles that enhance condensation
Fog - correct answer ✔✔cloud at ground level; (smog= smoke+fog)
Formed by cooling, evaporation, and mixing
Advection Fog - correct answer ✔✔warm, moist, air moves over cold surface; winds slightly
stronger so deeper fog layer; can see it roll in
Upslope Fog - correct answer ✔✔cooling of air as it moves upslope
Evaporation Fog - correct answer ✔✔cold air over warm water; water evaporates into cooler air
above it; the ending of fog occurs with enhanced wind or sun penetrating fog and warming
ground
,Radiation Fog - correct answer ✔✔Ground fog
Clear nights
long wave radiation cooling at night (like dew) but light wind mixes shallow layer above surface;
fog more common in winter because of longer nights; common with strong surface inversions
stratus - correct answer ✔✔"layer" (flat)
cumulus - correct answer ✔✔"heap/pile" detached (think cauliflower)
nimbus - correct answer ✔✔raining
alto - correct answer ✔✔middle
cirrus - correct answer ✔✔ice
high clouds - correct answer ✔✔bases >7km; ice only cirrus; thin and whispy
Cirrus: thin and wispy
cirrostratus: even thinner than cirrus and altostratus, see halo
cirrocumulus: even smaller and dinner details and structure, smaller than altocumulus
Middle clouds - correct answer ✔✔bases 2-7km; generally water
altostratus: higher and thinner than stratus, look for some sunlight
altocumulus: can be cellular (but smaller cells than stratocumulus)
, nimbostratus: like stratus but with rain
low clouds - correct answer ✔✔base<2km
stratus: forms when large layers of stable air are lifted,thick, grey, look for texture
stratocumulus: layer cloud with same vertical development
cumulous: form from stronger updrafts in unstable or
conditionally unstable environments
cumulonimbus: can extend to depth of troposphere, has ice anvil, and heavy rain, and often
lightning
stratus - correct answer ✔✔
stratocumulus - correct answer ✔✔
cumulus - correct answer ✔✔
cumulonimbus - correct answer ✔✔Mackerel sky
altostratus - correct answer ✔✔look for some sunlight
altocumulus - correct answer ✔✔
correct answers
Dew - correct answer ✔✔liquid condensation on a surface; common during cold, calm nights;
long wave cooling of air to dew point
Frost - correct answer ✔✔similar to dew but from deposition rather than condensation; (vapor
to ice)
Frozen Dew - correct answer ✔✔black ice, dew that is then frozen
Haze - correct answer ✔✔forms at a relative humidity <100%; when aerosols are gyroscopic;
reduction of visibility; water seeking particles that enhance condensation
Fog - correct answer ✔✔cloud at ground level; (smog= smoke+fog)
Formed by cooling, evaporation, and mixing
Advection Fog - correct answer ✔✔warm, moist, air moves over cold surface; winds slightly
stronger so deeper fog layer; can see it roll in
Upslope Fog - correct answer ✔✔cooling of air as it moves upslope
Evaporation Fog - correct answer ✔✔cold air over warm water; water evaporates into cooler air
above it; the ending of fog occurs with enhanced wind or sun penetrating fog and warming
ground
,Radiation Fog - correct answer ✔✔Ground fog
Clear nights
long wave radiation cooling at night (like dew) but light wind mixes shallow layer above surface;
fog more common in winter because of longer nights; common with strong surface inversions
stratus - correct answer ✔✔"layer" (flat)
cumulus - correct answer ✔✔"heap/pile" detached (think cauliflower)
nimbus - correct answer ✔✔raining
alto - correct answer ✔✔middle
cirrus - correct answer ✔✔ice
high clouds - correct answer ✔✔bases >7km; ice only cirrus; thin and whispy
Cirrus: thin and wispy
cirrostratus: even thinner than cirrus and altostratus, see halo
cirrocumulus: even smaller and dinner details and structure, smaller than altocumulus
Middle clouds - correct answer ✔✔bases 2-7km; generally water
altostratus: higher and thinner than stratus, look for some sunlight
altocumulus: can be cellular (but smaller cells than stratocumulus)
, nimbostratus: like stratus but with rain
low clouds - correct answer ✔✔base<2km
stratus: forms when large layers of stable air are lifted,thick, grey, look for texture
stratocumulus: layer cloud with same vertical development
cumulous: form from stronger updrafts in unstable or
conditionally unstable environments
cumulonimbus: can extend to depth of troposphere, has ice anvil, and heavy rain, and often
lightning
stratus - correct answer ✔✔
stratocumulus - correct answer ✔✔
cumulus - correct answer ✔✔
cumulonimbus - correct answer ✔✔Mackerel sky
altostratus - correct answer ✔✔look for some sunlight
altocumulus - correct answer ✔✔
