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.

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.

  • 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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    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.



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.



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.

Click on image to see WSDDM demonstration.
  • 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.


WTWS Geographic Situation Display
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WTWS graphic display
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Alphanumeric Alarm Display (AAD)
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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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  • 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.

CIDD Display

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Automated Monitoring and Alerting

  • Spong System Monitor (used in Juneau and Taiwan - example shown for Juneau):

    Modified at RAP from public domain software obtained off the web. This provides a configurable method for monitoring the Juneau system hosts for a variety of functions and displaying on the web. Green okay; Yellow warning; Red critical warning; Purple host not reporting (not shown). User can click on a button to get a page detailing the warning and other messages. Can also be configured to send email to selected recipients under triggering conditions.

Updated 2/15/01