Download METEO415(2003) Quiz 1

Meteo 416
Advanced Forecasting
QUIZ
Spring 2010
#2
Name ___________________________________
For 1-3, Choose all that apply.
1. The propagation of a convective system is most dependent on the location of
which of the following features?
____ Strongest low-level moisture convergence
____ Region of decaying cells
_____ Most unstable air
____ Region of highest LFCs
____ Axis and orientation of the low-level jet
2. The amount of rainfall that falls over an area depends on which of the
following?
____ Cloud depth ____ Topographic influences ____ Size of rainfall area
____ Speed of rainfall propagation
______ Intensity of the rainfall
____ High surface dewpoints
3. What are the limitations of using NEXRAD radar imagery to monitor and
forecast precipitation amounts?
____ Beam may overshoot maximum reflectivity
____ Bright banding and hail contamination
____ Only provides precipitation estimates between rain gauges
____ Z-R relationships are dependent on droplet size and distribution
____ Poor estimate of cell/system movement
4. True or False. High pressure at high latitudes is a prominent feature during
“blocking” regimes in the middle troposphere
5. True or False. Mid-tropospheric winds from the west are weaker than usual
average around the mid to high latitudes of the northern hemisphere when the
arctic oscillation is highly positive.
6. True or False. The arctic oscillation often exhibits large day-to-today
changes from positive to negative or negative to positive.
7. Choose the best answer. To best assess where, when, and how much
precipitation may fall in an area, you need to first find regions of highest
_____ and identify how fast these areas are moving.
a.
b.
c.
d.
e.
rainfall, moisture and temperature
instability, lift and temperature
instability, rainfall and model QPF
instability, lift and moisture
lift, rainfall and moisture