Garmin Pilot for Android, Руководство пользователя, Страница: 120 / 150

Garmin Pilot for Android User’s Guide 190-01532-00 Rev. A
104
Fly
Overview
Plan
File
Fly
Subscriptions
Appendices
Index
NeXrad i
NTeNsiTy
Colors are used to identify the different NEXRAD echo intensities (reflectivity)
measured in dBZ (decibels of Z). “Reflectivity” (designated by the letter Z) is the
amount of transmitted power returned to the radar receiver. The dBZ values increase
as returned signal strength increases. Precipitation intensity is displayed using colors
corresponding to the dBZ values.
Radar Intensity
Viewing Radar Information:
1)
From any page tap > .
2)
Tap select 'Radar' from the Layer Select menu.
3) Tap to animate the radar loop. Each frame of the radar loop is time
stamped. The time stamp is just right of the play button.
AIRMETS
An AIRMET (AIRmen’s METeorological Information) can be especially helpful for
pilots of light aircraft that have limited flight capability or instrumentation. An AIRMET
must affect or be forecast to affect an area of at least 3,000 square miles at any one
time. AIRMETs are routinely issued for six-hour periods and are amended as necessary
due to changing weather conditions. AIRMETs are displayed as green (IFR/mountain
obscuration), orange (turbulence), or blue (icing) shaded areas on the map display.
SIGMETS
A SIGMET (SIGnificant METeorological Information) advises of weather that is
potentially hazardous to all aircraft. In the contiguous United States, the following
items are covered: severe icing, severe or extreme turbulence, volcanic ash (red), dust
storms, and sandstorms that lower visibility to less than three statute miles.
A Convective SIGMET is issued for thunderstorms, isolated severe thunderstorms,
embedded thunderstorms, hail at the surface, and tornadoes.