Road Weather Management Workshop April 9, 2001 Robert G. Hallowell MIT Lincoln Laboratory
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Transcript of Road Weather Management Workshop April 9, 2001 Robert G. Hallowell MIT Lincoln Laboratory
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Road Weather Management Workshop
April 9, 2001
Robert G. Hallowell
MIT Lincoln Laboratory
Aviation Sensors and Products
for Hurricane Applications
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Outline
• Overview of Aviation Weather Products (MIT/LL)
• Hurricane Applications
– Advantages of Integrating Sensors
– Wind Estimations
– Automated Storm Tracking
• Summary
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Civil Aviation Weather Systems
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Integrated TerminalWeather System (ITWS)
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
ITWS Products Via Digital Data Feed
Graphics Products
Text ProductsWind Profile Configured Alerts Terminal Wx Text Hazard Text
AlertsMicroburstWind Shear Gust Front ETI Tornado Alerts Lightning AP Status
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Multi-Radar Integration
• Fundamental difference: FAA provides radar-derived products directly to non-meteorologist users without any meteorologist review
– Improved NEXRAD data quality (AP, test patterns, clutter)
– Mosaicked Radar Images (NEXRAD, TDWR, WSP)
– Automated Dual-doppler 3-D Winds Products
– Result:
More reliable estimates of rainfall
Better precipitation tracking
Improved overall coverage
• Some Challenges:
– TDWR focus on airport
– ASR-9 fan beam (not easily merged with TDWR/NEXRAD)
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
ITWS: Automated Radar Data Quality Editing
Tampa NEXRAD after AP editing
WARPmosaicalgorithm
Melbourne NEXRADafter AP editing
ITWSmosaicalgorithm
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
ITWS: Dual-Doppler Winds
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Terminal Forecast Algorithm Architecture
Radar data Scale separation
Track vectors Product display
Automated
Scoring
NEXRAD radar
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Terminal Convective Weather Forecast Product
-30-20
-10 CurrentWeather
+10+20
+30+40
+50+60 min Forecast
Key features:Automated scoring of past performanceUpdates every 5-6 minutesUses NEXRAD VIL dataSuccessful operational use at Dallas, Orlando, Memphis, and New York
Technology development funded by FAA Aviation Weather Research Program
(AWR)
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Hurricane Erin 8/2/1995
• Category I Hurricane
• Precipitation Intensity Based on NEXRAD
• Movie Loop
0500Z to 1100Z
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Hurricane Erin - 60 Min Forecast
• Verification of 60 minute forecast
– Weak Precip or Stronger
– Within 5 NM
– Overall CSI score
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MIT Lincoln LaboratoryRGH 4/9/01
Hurricane Conf
Summary
• Multiple FAA weather radars and derived products coming on-line (ITWS 2002-2004, CIWS 2001, MIAWS 2001-2003)
• FAA/NWS radar integration has been extremely successful operationally for the FAA
• ITWS winds products (microbursts, 3-d winds) could be enhanced for hurricane applications
• Storm tracking technology (0-2 hours) could assist in early flood warnings