Introduction
Meteorological Info for Non-Met. Users
Geomapped Integration of Diverse Info. Types
Automated Monitoring and Alerting |
Much of the research at RAP results in the development
of specialized weather displays for a wide range of users. Through
developing an understanding of the intended use of weather information
in the decision process, displays are presented to the user that
are intuitive and require minimal interpretation.
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Meteorological Information Customized for Non-Meteorological
Users
Presentation of weather information to aviation decision makers,
i.e., pilots airline dispatchers, air traffic controllers, airport
operators, has been a mainstay of RAP's activity since its inception.
Below are several examples of these displays.
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- Juneau, Alaska's airport has difficult surrounding terrain,
resulting in turning departures and departures near high terrain.
In high wind, severe low altitude turbulence is a significant
safety factor.
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Click on image to view full scale (349k) |
Juneau Dedicated Display - user: Alaska Airlines
This display (viewed at left) shows quality controlled wind speed
and direction over past hour for selected anemometer sites. Dials
and text on right show most recent minute of data and ranges.
Note that wind directions are displayed in magnetic reference
frame used by aviation community. Upper panel shows flight paths
status, wind speed and direction at anemometer sites, runway head
and crosswinds, and system data status.
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Click on image to link to web site |
Juneau
Web Display - user: General aviation users and others in Juneau
area
Display shows latest data from anemometers and wind profilers
(wind speed and direction). It depicts runway winds and approach/
departure status (viewed at left) and current photo images from
Pederson Hill west of runway.
There are buttons available on the
web page header which bring up help information on the display,
send feedback on the display, connect to the NWS Juneau page for
additional weather info. Location of various sensors is in a map
shown in the help pages.
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ADDS flight path tool |
- Pilots and airline dispatchers need high-quality weather information
for flight planning and monitoring during flight. The Aviation
Digital Data Service (ADDS),
developed by NCAR and NOAA's Forecast Systems Laboratory, runs
at the NWS Aviation Weather Center in Kansas City to provide one
of the best web-based weather briefing sites on the Internet.
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Click on image to see WSDDM demonstration.
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- Airline deicing crews and airport operators maintaining runways
have special needs for weather decision support during snow storms.
The FAA-supported technology developed by NCAR called Weather
Support for Deicing Decision Making (WSDDM)
provides the ideal tool.
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WTWS Geographic Situation Display
(click on image to see full size)

WTWS graphic display
(click on image to see full size)

Alphanumeric Alarm Display (AAD)
(click on image to see full size)
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Geo-mapped Integration of Diverse Information Types
- WTWS Geographic Situation Display: Designers developed the WTWS
products to enhance the safety, capacity and efficiency of operations
at Chek Lap Kok by automatically providing pilots with concise
windshear and turbulence alerts. The system was also designed
to provide air traffic managers and supervisors with information
to aid effective decision-making and to present high-resolution,
real-time meteorological data and forecast guidance to forecasters.
The WTWS integrates data from various sensors and sources,
including anemometers, Terminal Doppler weather radar, Doppler
wind profilers, numerical weather prediction models and an array
of global weather observations. Indirectly, it receives data
from the ICAO world area forecast system (WAFS) and the World
Meteorological Organization (WMO) global telecommunications
system.
- The primary WTWS product suite includes detection of terrain-induced
turbulence, terrain-induced windshear, convective microburst
and windshear, gust fronts, precipitation intensity and storm
motion. It also predicts terrain-induced turbulence and airport
surface wind and guides mesoscale numerical weather prediction
guidance. The graphical and text formats are easily interpreted
by pilots, controllers, air traffic managers and aviation forecasters.
The alerts use commonly accepted aeronautical navigation terminology.
The WTWS graphic display delivers hazardous weather warning
information and other meteorological products. It shows the
horizontal profile of various hazardous weather areas, vertical
wind profiles near the approach and departure corridors, and
textual warning messages. Video replay of the recent product
history is possible. The meteorological situation is displayed
in several user-selectable ranges and levels of detail. Critical
products and important situation changes are highlighted visually
on the display and/or announced by audible signals.
- The alphanumeric alarm display is designed to alert controllers
to time-critical weather hazards and to provide textual warnings
for communication to pilots. Alerts are given as microburst,
windshear or turbulence, with associated intensity and location.
For windshear and microburst alerts, intensity is given as headwind
"loss" or "gain" in knots; for turbulence, intensity is specified
as "moderate" or "severe". The intensity is the maximum expected
along the alert corridor and the alert location is where the
event is first expected to be encountered. Event locations for
windshear alerts are given as one, two or three nautical miles
on approach or departure - or on the runway. Event locations
for turbulence alerts are identified as departure or approach.
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Click on image to view full scale |
- Juneau Geographic Situation Display
Shows anemometer wind direction arrows
and textual info, wind profiler wind direction and textual info
at selected altitude, departure flight paths color coded go/nogo.
Upper panel shows flight paths status, wind speed and direction
at anemometer sites, runway head and crosswinds, and system
data status.
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Click on image to view full scale |
Automated Monitoring
and Alerting
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