Ed
Wehling
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Topic 5: Making Clouds
Please note: the questions
listed are not the only items that you need to know. The questions point
out basic information to help understand some topics, some concepts that
may not be obvious to all students, and some of the more difficult
concepts.
How do initial, tiny water
droplets form?
How does a tiny droplet grow
into a much, much bigger cloud droplet? D2L
explanation
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Describe the
saturation curve of the growth of a droplet.
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Describe the solute
effect and how it is part of the saturation curve.
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Describe the
curvature effect and how it is a part of the saturation
curve.
-
Be sure to describe
how the conditions in which the droplet grows using the
saturation curve. Be sure to differentiate between growth of
a haze droplet and an activated droplet.
How do we make clouds by
cooling?
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Describe how clouds
are formed by lifting at fronts.
--Description from U. of
Illinois
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Describe how clouds
are formed by lifting near surface convergence.
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Describe how clouds
are formed by lifting at higher elevation.
--Description from U. of
Illinois
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Describe how clouds
are formed by lifting by upper air motions.
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Describe how clouds
are formed by lifting at fronts.
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Describe how clouds
are formed by lifting by convection.
--Description from U. of
Illinois
--Why do cumulus clouds have flat bases?
Why are the bases at about the same height above the ground?
Stability of the atmosphere D2L Explanation
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Why is it important for
meteorologists to know about the stability of the atmosphere?
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Define a stable and an
unstable environment.
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Define a lifted parcel.
Compare the dry adiabatic lapse rate, the moist adiabatic lapse rate,
and the environmental lapse rate.
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What conditions would result
in a stable atmosphere?
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What conditions would result
in an unstable atmosphere?
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Describe how we would look at an atmospheric
temperature profile to determine
if a layer
of the atmosphere is absolutely stable--or
absolutely unstable--or conditionally unstable
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How can we look at temperature
profiles of layers of the atmosphere and compare the relative
stability of the layers?
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What
environmental
conditions make the air more stable? Explain
each in terms of the atmospheric temperature profile.
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What
environmental
conditions make the air more unstable? Explain each
in terms of the atmospheric temperature profile.
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How high will a
cloud
or layer of air rise?
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How does condensation affect
the growth of a cloud?
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What is entrainment? Why can entrainment inhibit
air lifting in a cloud?
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Why are some cumulus clouds
thin and some are
much taller? Why are thin cumulus clouds usually a signal of fair
weather?
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Some links:
--Description
of stability from U. of Illinois
--Cloud height
interactive
--Stability and cloud formation
interactive
Radiation fog
How do we make clouds by
mixing?
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Boundary layer
clouds--how do they form?
-
Advection fog
--How does it form? How does it dissipate?
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Steam fog
--How does it form? How does it dissipate?
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Contrail
interactive
Cloud classification
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What are the basic properties of clouds?
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How can we distinguish between higher and lower
clouds?
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List and describe the 10 genera of
clouds
--Plymouth
State College cloud boutique
--University of
Illinois
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