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190-00820-11 Rev. A
Pilot’s Guide for the Cirrus SR2x with Cirrus Perspective by Garmin
373
HAZARD AVOIDANCE
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
Displaying Precipitation weather information:
1)
Select the
MAP
Softkey (for the PFD Inset Map, select the
INSET
Softkey). This step is not necessary on the
Weather Data Link (CNXT) Page.
2)
Press the
PRECIP
Softkey.
The system displays either base or composite NEXRAD imagery, depending on the region.
Region
Radar Reflectivity Type
United States
Composite Reflectivity
Canada, Europe, Australia
Base Reflectivity
The base reflectivity precipitation weather product shows the radar returns from the perspective of a single
antenna tilt angle. The composite reflectivity precipitation weather product shows the
highest
radar energy
received from multiple antenna tilt angles. The display of the information is color-coded to indicate the
intensity of the echoes and the type of precipitation.
All weather product legends can be viewed on the Weather Data Link (CNXT) Page. For the Precipitation
legend (Figure 6-69), select the
LEGEND
Softkey when Precipitation is selected for display.
No Radar Coverage
Figure 6-69 Precipitation Data Legend
Boundary of Connext
weather data request
The display of No Radar Coverage is enabled when Precipitation is selected for display. Areas where
precipitation radar coverage is not currently available or is not being collected are indicated in gray shade of
purple. A white boundary line with white tick marks depicts the selected coverage area of the Connext Data
Request. This boundary encloses the precipitation data when this weather product is displayed.
r
eflectiVity
Reflectivity is the amount of transmitted power returned to the radar receiver. Colors on the Precipitation
display directly correlate to the level of detected reflectivity. Reflectivity as it relates to hazardous weather
can be very complex.
The role of radar is essentially to detect moisture in the atmosphere. Simply put, certain types of weather
reflect radar better than others. The intensity of a radar reflection is not necessarily an indication of the
weather hazard level. For instance, wet hail returns a strong radar reflection, while dry hail does not. Both
wet and dry hail can be extremely hazardous.
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