Radar Exam 2 Flashcards
(14 cards)
What are the two types of velocity data and how many levels are there in each mode?
Base and storm relative and 14 levels in each
Goes from -64 to 63 kts
What are some improvements using dual-pol over WSR-88D?
Improved detection of ground clutter, birds
Hydrometer classification
Severe storm signature detection
What are applications of base velocity and storm relative velocity?
Base: magnitude of winds
Detection of severe weather development and storm structure
Storm Relative: identification of signatures
Identification of velocity of fast moving storms
What are the sources of spectrum width?
Mean radial velocity estimate due to: wind shear and turbulence
What cases would you use spectrum width?
Looking for inflow as well as tornadic signatures
What are some non-meteorological targets that could be picked up?
Birds, ground clutter, bugs, wildfires
What is dual-pol?
Sends out wavelengths both along the horizontal and vertical
Advantages of dual-pol?
Reduces non-weather phenomenon
Tell the difference between hydrometeors
Improve precip estimators
What is the difference between 1-hr, 3-hr, and storm total precip accumulation?
1-hr and storm total accumulate with each scan
3-hr takes the total of the 1-hr precip at the top of the hour
Storm total resets to 0 after 1-hr of no precip
What are the applications of precip accumulation products?
Flash flood assessing
Track rainfall paths
Post storm analysis
What is an application of a snowfall product?
Can find the snow to liquid water ratio
Can get storm totals
What are characteristics of a pulse storm?
Intense updraft burst
50dBZ core descends and has jail
Develops in absence of vertical shear
What are characteristics of a multicell storm?
Organized complex of 2-4 cells
Weak echo region exists at low levels
System moves to right of the mean wind
What are characteristics of a severe multicell storm?
Occur in large buoyancy environment
Cell regeneration along outflow is important
Strong low level reflectivity
