A
This type of occlusion occurs as a secondary baroclinic zone sets up in the cold air behind the primary baroclinic zone.
Instant Occlusion
The number of cycles per second b/n the limits of a frequency band.
Bandwidth
This type of polarization transmits and receives pulses in both a horizontal and vertical orientation.
Dual Polarization
May consist of either a single ordinary cell of short duration or ideally, a supercell of long duration.
Single-Cell Storm
A product that shows a plot of the past hours movement, current location, and forecast movement for the next hour or less for each identified thunderstorm cell. Scientists use this product to determine reliable storm movement.
Storm Tracking Information
A product designed to locate storms that have the potential to produce hail.
Hail Index
This is the velocity of the precipitation either toward or away from the radar (in a radial direction)
Mean Radial Velocity
This N-gradient falls between 0 and –24 N-units.
Standard Refraction
It consists of several ordinary cells, and propagates discretely as new cells develop and old cells dissipate, sometimes in an organized fashion. Usually in a cluster.
Multicell Storm
A product, which shows an intense gate-to-gate azimuthal shear, associated with tornadic- scale rotation. It depicts the tornadic vortex signature by a red triangle with numerical output of location and height.
Tornado Detection Algorithm/TVS
Radar programming that tells the radar to stop scanning the upper levels of the atmosphere once it stops detecting precipitation heavier than a set amount.
AVSET: Automated Volume Scan Evaluation and Termination
This product presents snapshots of the horizontal winds blowing at different altitudes above the radar.
Velocity Azimuth Display Wind Profile (VAD Wind Profile)
This type of refraction is present when the N-gradient decreases from –24 to –48 N-units per 1000 feet.
Superrefraction
Consists of one dominant cell that includes cyclonic turning of the mid-level updraft and continuously propagates to the right of the mean winds.
Supercell
A radar echo pattern formed when a segment of a line of thunderstorms surges forward at an accelerated rate.
Line Echo Wave Pattern