EIGHTH CONFERENCE ON

AVIATION, RANGE,

AND AEROSPACE METEOROLOGY

10-15 JANUARY 1999 DALLAS, TEXAS

Sponsored byAMERICAN METEOROLOGICAL SOCIETY

Front Cover: Radial velocity fields of a squall line north of Oklahoma City on August 22, 1997.Outbound radial velocities depicted by the red and yellow colors are aliased radial velocities(BEFORE). Algorithm corrections resulted in correct inbound squall line radial velocities shown by theblue and green colors (AFTER). Data collection is from the Program Support Facility Terminal DopplerWeather Radar in Oklahoma City.

For additional information refer to paper PI 1.5 (page 415), entitled, "TDWR Velocity DealiasingModifications," by Christopher F. Keohan of the Federal Aviation Administration (FAA), OklahomaCity. Oklahoma. Cover provided by and sponsored by the FAA, Oklahoma City, Oklahoma.

89UB/TIB Hannover119 059 86X

All Rights Reserved. No part of this publication may be reproduced or copied in any form or by any means - graphic, electronic,or mechanical, including photocopying, taping, or information storage and retrieval systems - without the prior written permissionof the publisher. Contact AMS for permission pertaining to the overall collection. Authors retain their individual rights and shouldbe contacted directly for permission to use their material separately. The manuscripts reproduced herein are unrefereed paperspresented at the Eighth Conference on Aviation, Range, and Aerospace Meteorology. Their appearance in thiscollection does not constitute formal publication.

AMERICAN METEOROLOGICAL SOCIETY45 BEACON STREET, BOSTON, MASSACHUSETTS USA 02108-3693

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EIGHTH CONFERENCE ON AVIATION, RANGE, AND AEROSPACE METEOROLOGY

SESSION 1: A DAY IN THE LIFE OF AN AVIATION METEOROLOGIST

WEATHER SUPPORT FOR A GLOBAL AIRLINE. David L. Kleckner, United Airlines, Chicago, IL

THE MANY LIVES OF A METEOROLOGIST IN SUPPORT OF SPACE LAUNCH. D. E. Harms, 45thWeather Squadron, Patrick AFB, FL; et al

WORKING THE AREA FORECAST DESK AT THE AVIATION WEATHER CENTER. Henry L. Fields,NOAA/NWS/NCEP/AWC, Kansas City, MO

THE ROLE OF AVIATION METEOROLOGISTS IN THE TEST AND EVALUATION OF WEATHERPROCESSOR SYSTEMS AT THE FEDERAL AVIATION ADMINISTRATION WILLIAM J. HUGHESTECHNICAL CENTER. Danny Sims, FAA, Atlantic City, NJ; and M. Printy, G. Smythe, and C. Turner

FORECASTING AT FEDEX. Dale A. Dockus, FEDEX, Memphis, TN

THE ROLE OF AN AVIATION METEOROLOGIST IN THE PRIVATE SECTOR. Dale Raymakers, DTNKavouras Weather Services, Burnsville, MN

* 1.7 A DAY IN THE LIFE OF AN AIR FORCE METEOROLOGIST SUPPORTING AIRLIFT OPERATIONS.Kimberly Kreis, AWS, Offutt AFB, NE

SESSION 3: AVIATION HAZARDS AND OPERATIONAL IMPACTS

22 3.1 REPORT ON THE NATIONAL AVIATION WEATHER CENTER-WHERE DO WE GO FROM HERE?David R. Rodenhuis, NOAA/NWS/NCEP/AWC, Kansas City, MO; and J. H. Henderson, F. R.Mosher, F. J. Foss, and R. J. Olson

* 3.2 WEATHER IMPACTS ON SPACE LAUNCH OPERATIONS AT THE UNITED STATES EASTERNRANGE. Michael W. Maier, Computer Sciences Raytheon, Patrick AFB, FL

27 3.3 REPORT OF THE FIRST STUDY CONFERENCE ON AVIATION WEATHER HAZARDS. Kelvin K.Droegemeier, CAPS/Univ. of Oklahoma, Norman, OK; and D. Braaten and D. R. Rodenhuis

33 3.4 THUNDERSTORMS & AIR TRAFFIC VS. SAFETY & ECONOMICS. IS COLLABORATION THEANSWER? Thomas H. Fahey III, Northwest Airlines, Inc., St. Paul, MN; and D. Branch, W. Failor, C.Knable, W. S. Leber, and D. R. Rodenhuis

38 3.5 FREEZING RAIN AS AN IN-FLIGHT ICING HAZARD. Ben C. Bernstein, NCAR, Boulder, CO; and T.P. Ratvasky, D. R. Miller, and F. McDonough

43 3.6 A CASE STUDY OF MID-LEVEL TURBULENCE OUTSIDE REGIONS OF ACTIVE CONVECTION.Richard F. Ferris, MIT Lincoln Lab., Lexington, MA

SESSION 4: CURRENT AVIATION FORECAST CAPABILITIES

48 4.1 EVIDENCE OF IMPROVEMENTS IN THE QUALITY OF IN-FLIGHT ICING ALGORITHMS. Barbara G.Brown, NCAR, Boulder, CO; and T. L. Kane, R. Bullock, and M. K. Politovich

53 4.2 INTEGRATED ICING DIAGNOSTIC ALGORITHM ASSESSMENT AT THE AVIATION WEATHERCENTER. Danny Sims, FAA, Atlantic City, NJ; and C. Fidalgo, C. Turner, M. K. Politovich, and D.Johnson

58 4.3 THE GROWTH AND DECAY STORM TRACKER. M. M. Wolfson, MIT Lincoln Lab., Lexington, MA;and B. E. Forman, R. G. Hallowell, and M. P. Moore

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63 4.4 NAV CANADA'S TAF AMENDMENT RESPONSE TIME VERIFICATION. Henry Stanski, EnvironmentCanada, Toronto, ON, Canada; and A. Leganchuk, A. Hanssen, D. Wintjes, O. Abramowski, and J.Shaykewich

68 4.5 AN INTEGRATED APPROACH TO CLEAR-AIR TURBULENCE FORECASTING. Robert Sharman,NCAR, Boulder, CO; and C. Tebaldi and B. G. Brown

72 4.6 TURBULENCE FORECASTING ALGORITHMS- CALIBRATION, COMPARISON, AND VERIFICATION.Adrian Marroquin, NOAA/FSL, Boulder, CO

77 4.7 UCAR REVIEW TEAM REPORT ON THE NCEP AVIATION WEATHER CENTER. Carl R. Knable,United Air Lines, Chicago, IL

81 4.8 INTERNATIONAL FLIGHT FOLDER DOCUMENTATION PROGRAM AT THE AWC. James H.Henderson, NOAA/NWS/NCEP/AWC, Kansas City, MO

8 6 4.9 AN UPDATE ON THE DEVELOPMENT OF FORECASTER PRODUCTIVITY TOOLS FOR THEAVIATION WEATHER CENTER. Dennis M. Rodgers, NOAA/FSL, Boulder, CO; and A. Wilson, G.Pratt, and J. Frimel

9 0 4.10 GENERATION OF SIGNIFICANT WEATHER FORECASTS CAPABILITIES AT THE WORLD AREAFORECAST CENTRES. Steve Murray, UK Met Office, Bracknell, Berks., UK; and R. Olson

9 3 4.11 LESSONS LEARNED DURING THE FIRST YEAR OF SEMI-AUTOMATIC GENERATION OFSIGNIFICANT WEATHER FORECASTS AT THE AVIATION WEATHER CENTER. Ronald J. Olson,NOAA/NWS/NCEP/AWC, Kansas City, MO

95 4.12 THE BENEFITS OF USING FSL'S REAL-TIME VERIFICATION SYSTEM (RTVS) AT THE NWS/NCEPAVIATION WEATHER CENTER. Jennifer Luppens Mahoney, NOAA/FSL, Boulder, CO; and J. K.Henderson, B. G. Brown, and C. S. Hartsough

100 4.13 VERIFICATION OF THE AVIATION WEATHER CENTER'S CONVECTIVE SIGMET OUTLOOKSUSING RTVS. Craig S. Hartsough, NOAA/FSL, Boulder, CO; and J. L Mahoney, J. K. Henderson,and H. R. Hudson

105 4.14 THE USE OF VERIFICATION FROM AN OPERATIONAL FORECASTER'S PERSPECTIVE. Henry L.Fields, NOAA/NWS/NCEP/AWC, Kansas City, MO; and J. L. Mahoney

107 4.15 A GRIDDED AVIATION WEATHER DATABASE FOR FLIGHT SPECIFIC METEOROLOGICALPRODUCTS. M.-F. Turcotte, Canadian Meteorological Centre, Dorval, PQ, Canada; and R. Verret, V.Souvanlasy, and M. Baltazar

111 4.16 REAL-TIME CONFIGURATION OF MM5 USING A GRAPHICAL USER INTERFACE. Todd A._ Hutchinson, LITTONAASC, Reading, MA; and P. S. Dailey, R. A. Reynolds, D. Z. Sherer, E. A.

Kelley, and J. R. Staudinger

115 4.17 THE MM5 AT THE AF WEATHER AGENCY: NEW PRODUCTS TO SUPPORT MILITARYOPERATIONS. Jeffrey A. Doran, Headquarters Air Force Weather Agency, Offutt AFB, NE; and P.Roohr, D. J. Beberwyk, G. R. Brooks, G. A. Gayno, R. T. Williams, J. M. Lewis, and R. J. Lefevre

120 4.18 AVOIDING TRIGGERED LIGHTNING THREAT TO SPACE LAUNCH FROM THE EASTERNRANGE/KENNEDY SPACE CENTER. W. P. Roeder, 45th Weather Squadron, Patrick AFB, FL; and J.E. Sardonic, S. C. Jacobs, M. S. Hinson, A. A. Guiffrida, and J. T. Madura

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125 4 . 1 9 REPORT O N A TASK FORCE TO COMMERCIAL AVIATION - RAPID PROTOTYPING OFEXPERIMENTAL PRODUCTS. David R. Rodenhuis, NOAA/NWS/NCEP/AWC, Kansas City, MO;and F. R. Mosher and T. H. Fahey III

130 4.20 ACTIVITIES OF THE FEDERAL AVIATION ADMINISTRATION'S AVIATION WEATHER RESEARCHPROGRAM. Kenneth M. Leonard, FAA, Washington, DC; and K. L. Van Sickle, D. J. Pace, W. L.Fellner, and J. J. Conte

JOINT SESSION J l : APPLICATIONS OF UPS IN AVIATION WEATHER (Joint with 15th InternationalConferenceon Interactive Information and Processing Systems (UPS) for Meteorology, Cceanography, andHydrology)

* J l . l OVERVIEW.

134 J1.2 OVERVIEW OF THE AVIATION DIGITAL DATA SERVICE. Lynn A. Sherretz, NOAA/FSL, Boulder,CO; and G. Thompson and T. Mahony

138 J1.3 AVIATION WEATHER PRODUCTS ON THE AVIATION WEATHER CENTER HOME PAGE. Timothy P.Mahony, NOAA/NWS/NCEP/AWC, Kansas City, MO

142 J1.4 DISTRIBUTION OF AVIATION WEATHER PRODUCTS VIA THE PUBLIC INTERNET AND PRIVATEINTRANETS. Ronald C. Martin, SkySource Inc., Annapolis, MD; and T. H. Fahey III and A. E. Zukas

146 Jl .5 PROVIDING AVIATION WEATHER SUPPORT THROUGH THE INTERNET. David L. Kleckner, UnitedAirlines, Chicago, IL

149 J1.6 RECENT DEVELOPMENTS AND PLANS FOR THE FAA'S AUTOMATED WEATHER OBSERVINGPROGRAM. Kenneth A. Kraus, FAA, Washington, DC; and P. J. Kirchoffer

152 J1.7 AVIATION WEATHER PRODUCTS AS SEEN BY AN ENGINEER. Arthur Levy, FAA, Washington, DC;andC.J.TidwellJr.

J1.8 THE MILITARY AIRCREW INFORMATION SERVICE (MAIS)- HELPING AIRCREWS NAVIGATE THEMAZE OF WEATHER INFORMATION. Bradley V. Kassube, Headquarters Air Force WeatherAgency, Offutt AFB, NE; and M. A. Venerable and P. Roohr

156 Jl .9 THE DESIGN OF THE NEW SPACELIFT WEATHER INFORMATION SYSTEM (SWIS) FOR THE U.S.SPACE PROGRAM. Magda S. Hashem, Raytheon Systems Co., Aurora, CO; and J. A. McGinley

POSTER SESSION P5: INTERNET AND TERMINAL FORECASTING

160 P5.1 AUTOMATED TRANSCRIBED WEATHER BROADCAST (TWEB) ROUTE FORECASTS AT THEAVIATION WEATHER CENTER. JoAnna L. Green, NOAA/NWS/NCEP/AWC, Kansas City, MO

164 P5.2 STORM-SCALE NUMERICAL WEATHER PREDICTION FOR COMMERCIAL AND MILITARYAVIATION. PART II: DEVELOPMENT AND ASSESSMENT OF AVIATION IMPACT VARIABLES. EricM. Kemp, Univ. of Oklahoma, Norman, OK; and C. M. Stock, F. H. Carr, and M. B. Schott

169 P5.3 OBJECTIVE CLASSIFICATION OF AUSTRALIAN CLIMATES. Harvey Stern, Bureau of Meteorology,Melbourne, Vic, Australia; and G. de Hoedt and J. Ernst

174 P5.4 PREDICTING THE LIKELIHOOD OF FOG AT MELBOURNE AIRPORT. Harvey Stern, Bureau ofMeteorology, Melbourne, Vic, Australia; and K. Parkyn

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179 P5.5 APPLICATIONS OF THE ETA-10 AND ACARS DATA TO MONITORING AND FORECASTINGMARINE LAYER STRATUS IN SOUTHERN CALIFORNIA. Greg Martin, NOAA/NWS, San Diego, CA

183 P5.6 ENVIRONMENT CANADA & NAV CANADA:- AVIATION FORECAST VERIFICATION SYSTEMWITH INCENTIVES AND PENALTIES. H. Stanski, Environment Canada, Downsview, ON, Canada;and A. Hanssen, W. Maynard, K. Johnson, J. Shaykewich, J. Foottit, and M. Ouellet

* P5.7 THE INTERNET AS A SOURCE OF AVIATION WEATHER. Michael A. Steinberg, AccuWeather, Inc.,State College, PA

* P5.8 A MARINE STRATUS FORECASTING SYSTEM. F. Wesley Wilson, MIT Lincoln Lab., Lexington, MA;and D. Clark

188 P5.9 HIGH RESOLUTION SIMULATIONS OF STRATUS/FOG BURNOFF IN SFO. Fanyou Kong, Univ. ofOklahoma, Norman, OK

192 P5.10 WEST COAST FOG AND STRATUS EVENTS AT AIR TERMINALS AND RELATED WEATHERSUMMARIES. Dale F. Leipper, DRI, Reno, NV; and D. Weygand, J. Millard, and B. Leipper

P5.l l PAPER WITHDRAWN

P5.12 OPERATIONAL USE OF MM5 AT RESOLUTIONS NEAR FIVE KILOMETERS- FORECASTINGIMPROVEMENTS IN SEVERE WEATHER SITUATIONS AND FOR SPACE SHUTTLE SUPPORT. PeterRoohr, Headquarters Air Force Weather Agency, Offutt AFB, NE; and D. J. Beberwyk, G. A. Gayno,G. R. Brooks, J. M. Lewis, J. A. Doran, and R. J. Lefevre

P5.13 HIGH RESOLUTION CLOUD FORECAST ANIMATIONS. Mark J. Gibbas, Litton/TASC, Inc.,Reading, MA

197 P5.14 IS THE METEOROGRAM A FORECASTER'S TOOL FOR FOG AND WIND AT VANDENBERG AFBCA? Christy Crosiar, 30th Weather Squadron, Vandenberg AFB, CA; and S. J. Bradley

SESSION 6: TERMINAL FORECASTING

200 6.1 THE TERMINAL CONVECTIVE WEATHER FORECAST DEMONSTRATION AT THE DFWINTERNATIONAL AIRPORT. R .G. Hallowell, MIT Lincoln Lab., Lexington, MA; and M. M. Wolfson,B. E. Forman, M. P. Moore, B. A. Crowe, T. M. Rotz, D. W. Miller, T. C. Carty, and S. F.McGettigan

205 6.2 NORMAUZED VERIFICATION OF AVIATION AERODROME FORECASTS (TAFs). Kent A. Johnson,Environment Canada, Kelowna, BC, Canada; and U. Gramann

6.3 PAPER WITHDRAWN

209 6.4 STORM-SCALE NUMERICAL WEATHER PREDICTION FOR COMMERCIAL AND MILITARYAVIATION. PART I- RESULTS FROM OPERATIONAL TESTS IN 1998. Richard L Carpenter, Jr., Univ.of Oklahoma, Norman, OK; and K. K. Droegemeier, G. M. Bassett, S. S. Weygandt, D. E. Jahn, S.Stevenson, W. L. Qualley, and R. Strasser

212 6.5 LOCAL DATA INTEGRATION IN EAST CENTRAL FLORIDA USING THE ARPS DATA ANALYSISSYSTEM. Jonathan C. Case, NASA/Kennedy Space Center, Cocoa Beach, FL; and J. Manobianco

216 6.6 OPTIMIZING THE PERFORMANCE OF THE ITWS MICROBURST DETECTION ALGORITHM IN DRYENVIRONMENTS. Erik A. Proseus, MIT Lincoln Lab., Lexington, MA; and M. A. Isaminger

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EIGHTH CONFERENCE ON AVIATION, RANGE, AND AEROSPACE METEOROLOGY

PAGESESSION 7: CONVECTION

2 2 0 7.1 COMMERCIAL AVIATION'S THUNDERSTORM FORECAST PRODUCT ACCURACY. ANDREW W.Schultz, Northwest Airlines, Inc., St. Paul, MN; and T. H. Fahey III and C. Hartsough

225 7.2 THUNDERSTORM INDUCED GRAVITY WAVES AS A POTENTIAL HAZARD TO COMMERCIALAIRCRAFT. David W. Miller, MIT Lincoln Lab., Lexington, MA

230 7.3 NATIONAL CONVECTIVE WEATHER FORECAST PRODUCT. Cynthia K. Mueller, NCAR, Boulder,CO; and C. B. Fidalgo, D. W. McCann, D. Meganhardt, N. Rehak, and T. Carty

235 7.4 ASPOC - A FRENCH PROJECT FOR A THUNDERSTORM PRODUCT DESIGNED FOR AIR TRAFFICCONTROL. Frederic Autones, Meteo-France, Toulouse, France; and J.-M. Carriere, S. Girres, S.Senesi, and P. Thomas

240 7.5 WSTORM - CONVECTION DIAGNOSED FROM NUMERICAL MODELS. Donald W. McCann,NOAA/NWS/NCEP/AWC, Kansas City, MO

POSTER SESSION P8: CONVECTION AND VOLCANIC ASH

244 P8.1 THE BENEFITS OF USING NEXRAD VERTICALLY INTEGRATED LIQUID WATER AS AN AVIATIONWEATHER PRODUCT. Bradley A. Crowe, MIT Lincoln Lab., Lexington, MA; and D. W. Miller

249 P8.2 USE OF LIGHTNING DATA AS A WEATHER RADAR "GAP" FILLER FOR ATC-AN INITIALASSESSMENT. Jeffrey D. Giovino, The MITRE Corp., McLean, VA; and J. P. Mittelman

253 P8.3 VOLCANIC ASH ADVISORY CENTRES - ROLES AND CHALLENGES. R. Servranckx, EnvironmentCanada, Dorval, PQ, Canada; and P. Chen and K. Little

257 P8.4 DEFINING PREDICTORS FOR THE TIMING OF WARM SEASON THUNDERSTORMS AT THEORLANDO INTERNATIONAL AIPORT. Ulreen O. Jones, Florida Inst. of Technology, Melbourne, FL;and M. R. Witiw, A. J. Cristaldi, and D. W. Sharp

259 P8.5 INVESTIGATION INTO LIGHTNING STRIKES TO HELICOPTERS OPERATING OVER THE NORTHSEA. N. G. J. Halsey, UK Met Office, Bracknell, Berks., UK; and R. Patton

264 P8.6 ANCHORAGE VOLCANIC ASH ADVISORY CENTER OPERATIONS. Elliott G. Barske, Jr,NOAA/NWS, Anchorage, AK

269 P8.7 VOLCANIC ASH FORECASTING EVENT OVER WESTERN CANADA 1998-07-10: OPERATIONALRESPONSE AND FORENSIC STUDY. Ken Little, Environment Canada, Dorval, PQ, Canada; and K.Johnson and R. Servranckx

273 P8.8 AN OPERATIONAL THUNDERSTORM FORECAST EXPERIMENT DESIGNED FOR USE IN REAL TIMEAIRCRAFT ROUTING. Horace R. Hudson, NOAA/NWS/NCEP/AWC, Kansas City, MO; and F. R.Mosher

278 P8.9 SPATIAL DISTRIBUTION OF CLOUD TO SURFACE LIGHTNING IN AND AROUND THE KWAJALEINATOLL. Gail McGovern, Aeromet, Inc., Tulsa, OK; and S. J. Carpenter

281 P8.10 A REFINEMENT OF THUNDERSTORM CLIMATOLOGY FOR THE TERMINAL RADAR CONTROLAIRSPACE. Paul Bieringer, MIT Lincoln Lab., Lexington, MA; and D. W. Miller and D. Meyer

P8.l l PAPER WITHDRAWN

285 P8.12 WSR-88D CELL TRENDS FINAL REPORT. Mark M. Wheeler, NASA, Cocoa Beach, FL

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290 P8.13 SATELLITE-BASED VOLCANIC ASH ADVISORIES AND AN ASH TRAJECTORY MODEL FROM THEWASHINGTON VAAC. Davida Streett, NOAA/NESDIS, Washington, DC

295 P8.14 SOUFRIERE HILLS, MONTSERRAT, ERUPTION ON 17-18 SEPTEMBER - LIMITATIONS IN THEAVIATION WARNING SYSTEM. John L. Beven II, NOAA/NHCAPC, Miami, FL

299 P8.15 ARAC SIMULATIONS OF THE ASH PLUME FROM THE DECEMBER 1997 ERUPTION OF SOUFRIEREHILLS VOLCANO, MONTSERRAT. John C. Pace, LLNL, Livermore, CA; and P. J. Vogt, J. S. Ellis, B.Voight, and R. J. Lefevre

304 P8.16 LONG RANGE THUNDERSTORM DISTRIBUTIONS CONTINUOUSLY OBSERVED BY MEANS OFGROUND BASED SFERICS MEASUREMENTS. J. A. Weinman, NASA/GSFC, Greenbelt, MD; andC. A. Morales, J. S. Kriz, and S. J. Goodman

308 P8.17 THE THUNDERSTORM PENETRATION/DEVIATION DECISION IN THE TERMINAL AREA. Dale A.Rhoda, MIT Lincoln Lab., Lexington, MA; and M. L. Pawlak

SESSION 9: VOLCANIC ASH

313 9.1 TOWARDS A NATIONAL PLAN FOR REPORTING VOLCANIC ASH. Steven R. Albersheim, FAA,Washington, DC

318 9.2 DEVELOPMENT OF AN AUTOMATIC SATELLITE VOLCANIC ERUPTION DETECTION SYSTEM, FOREN-ROUTE AVIATION. R. W. Lunnon, UK MET Office, Bracknell, Berks., UK; and I. J. McNair

322 9.3 VOLCANIC ASH CLOUDS POSE A REAL THREAT TO AIRCRAFT SAFETY. Leonard J. Salinas, UnitedAirlines, Chicago, IL

326 9.4 IMPROVEMENTS IN VOLCANIC ASH DETECTION USING GOES MULTI-SPECTRAL IMAGE DATA.Gary P. Ellrod, NOAA/NESDIS, Camp Springs, MD; and B. Connell

330 9.5 GMS-5 AND NOAA AVHRR SATELLITE OBSERVATIONS OF THE NEW ZEALAND MT RUAPEHUERUPTION OF 19/20 JULY 1996. Rodney Potts, BMRC, Melbourne, Vic, Australia; and M. Tokuno

335 9.6 VOLCANIC ASH ENCOUNTER PROBABILITIES. Barbara J. B. Stunder, NOAA/ARL, Silver Spring,MD; and J. L Heffter

SESSION 10: WAKE VORTEX, WINDS, AND TURBULENCE

340 10.1 NOWCASTING REQUIREMENTS FOR THE AIRCRAFT VORTEX SPACING SYSTEM (AVOSS).Timothy J. Dasey, MIT Lincoln Lab., Lexington, MA; and D. A. Hinton

345 10.2 OBSERVED AIRCRAFT RISING WAKES AT FLIGHT ALTITUDES. J. Allen Zak, Vigyan, Inc. andNASA/LRC, Hampton, VA; and W. G. Rodgers, Jr. and R. A. Rivers

349 10.3 A EUROPEAN WAKE VORTEX ENCOUNTER REPORTING SYSTEM AND DATABASE. J. A. Turner,UK Met Office, Bracknell, Berks., UK; and N. G. J. Halsey and G. Cole

353 10.4 THE PREDICTION OF CROSSWIND COMPONENTS OVER VERY SHORT PERIODS IN THECONTEXT OF WAKE VORTEX AVOIDANCE. N. G. J. Halsey, UK Met Office, Bracknell, Berks., UK

358 10.5 A STUDY OF NETWORK EXPANSION LLWAS (LLWAS-NE) FAULT IDENTIFICATION AND SYSTEMWARNING OPTIMIZATION THROUGH JOINT USE OF LLWAS-NE AND TDWR DATA. Darin R.Meyer, MIT Lincoln Lab, Lexington, MA; and M. A. Isaminger and E. A. Proseus

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363 10.6 A PRELIMINARY CLIMATOLOGY OF UPPER LEVEL TURBULENCE REPORTS. Tressa L. Kane, NCAR,Boulder, CO; and B. G. Brown and R. Sharman

368 10.7 AUTOMATED SYSTEMS FOR PREDICTING CLEAR AIR TURBULENCE IN GLOBAL AVIATIONFORECASTS. J. A. Turner, UK Met Office, Bracknell, Berks., UK; and C. E, Bysouth

373 10.8 THE CATEGORIES AND CAUSES OF THE LOW-LEVEL WINDSHEAR NEAR SUNGSHAN AIRPORTIN TAIWAN. Ting-An Wang, Civil Aeronautics Administration, Taipei, Taiwan; and C.-P. Pu

377 10.9 IMPROVING WIND ESTIMATES FOR TIME OF FLIGHT CALCULATIONS BY ADDING NEAR REAL-TIME AIRCRAFT REPORTS TO RUC. Rodney E. Cole, MIT Lincoln Lab., Lexington, MA; and C.Richard, S. Kim, and D. Bailey

10.10 PAPER WITHDRAWN

382 10.11 USE OF NUMERICAL GUIDANCE AIDS IN FORECASTING A TURBULENCE SUPEROUTBREAK OVERTHE EASTERN UNITED STATES. Richard G. Cundy, NOAA/NWS/NCEP/AWC, Kansas City, MO

387 10.12 SENSITIVITY OF FLIGHT PLANNING TO MODEL WINDS, Mark S. Brgby, Delta Airlines, Salt LakeCity, UT; and J.D.Horel

391 10.13 RAPID UPDATE CYCLE (RUC) WINDS ALOFT FORECAST ACCURACY AS A FUNCTION OF OUTPUTRESOLUTION. Joseph E. Sherry, The MITRE Corp., McLean, VA

POSTER SESSION PI 1: WAKE VORTEX, WINDS, AND TURBULENCE

396 PI 1.1 INTEGRATION OF MULTIPLE METEOROLOGICAL SENSOR OBSERVATIONS FOR WAKE VORTEXBEHAVIOR COMPARISON. Michael P. Matthews, MIT Lincoln Lab,, Lexington, MA; and A. P.Denneno

401 PI 1.2 WIND AND MOUNTAIN WAVE OBSERVATIONS FOR THE PATHFINDER HAWAIIAN FLIGHT TESTOPERATION. Edward H. Teets, Jr., AS&M, Inc., Edwards, CA; and N, Salazar

405 PI 1.3 DATA ASSIMILATION ERROR IN THE SIMULATION OF THE BOULDER WINDSTORM ANDTURBULENCE ENCOUNTERS NEAR MOUNTAINS, D. M, Landau, Univ, of California, Los Angeles,CA; and M. G. Wurtele and L. J. Ehernberger

410 PI 1.4 SIMULATION OF GUST AND TEMPERATURE PERTURBATIONS ALONG AN AIRPLANE PATHTHROUGH STRATOSPHERIC MOUNTAIN WAVE TURBULENCE. D. M, Landau, Univ, of California,Los Angeles, CA; and L. J. Ehernberger and M. G. Wurtele

415 PI 1.5 TDWR VELOCITY DEALIASING MODIFICATIONS, Christopher F. Keohan, FAA, Oklahoma City, OK

420 PI 1.6 RELATIONS BETWEEN GUSTY AREA AND WIND STRUCTURE AROUND RAINBANDS AT THEHOKURIKU COAST, JAPAN, IN WINTER. K .Masuda, National Defense Academy, Hashirimizu,Japan; and K. Tomine, T. Shimura, and F, Kobayashi

424 PI 1.7 IMPLEMENTATION STATUS ON THE LOW LEVEL WIND SHEAR ALERT SYSTEM RELOCATION ANDSUSTAINMENT PROGRAM (LLWAS-RS), John D. Nilsen, FAA, Washington, DC; and P. A. Biagi andF. W. Law

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PAGESESSION 12: ICING

12.1 A CLIMATOLOGY OF ICING CONDITION PROBABILITIES BASED O N HISTORICAL RADIOSONDEDATA. Eric F. Grelson, U.S. Air Force Academy, Colorado Springs, CO; and M. R. Anderson

4 2 9 12.2 AN INFERRED WINTER CLOUD CLIMATOLOGY. Lacey D. Holland, UCAR, Boulder, CO; and M. K.Politovich

• 12.3 OBSERVATION AND FORECASTING OF SUPERCOOLED LARGE DROPS AND AIRCRAFT ICING INCONVECTIVE CELLS EMBEDDED IN A STRATUS CLOUD. Thomas Hauf, DLR Oberpfaffenhofen,Wessling, Germany; and F. Schroder and A. Taffemer

4 3 3 12.4 PROBABILITY FORECASTS OF IN-FLIGHT ICING CONDITIONS. Barbara G. Brown, NCAR, Boulder,CO; and B. C. Bernstein, F. McDonough, and T. A. O. Bernstein

4 3 8 12.5 WEATHER SUPPORT TO DEICING DECISION MAKING (WSDDM) METEOROLOGICALEVALUATION AT THE FEDERAL AVIATION ADMINISTRATION WILLIAM J. HUGHES TECHNICALCENTER. Christopher M. Turner, Technical Resources Inc., Egg Harbor Township, NJ; and D. Simsand R. Rasmussen

4 4 3 12.6 HOW CAN WE USE AND DEPICT VARIABILITY OF CLOUDS IN ICING FORECASTS? Marcia K.Politovich, NCAR, Boulder, CO

4 4 7 12.7 A NEW MICROPHYSICS SCHEME FOR IMPROVED FORECASTS OF FREEZING PRECIPITATIONAND AIRCRAFT ICING. Andre Tremblay, AES, Dorval, PQ, Canada; and A. Glazer

4 5 2 12.8 APPLICATION OF MESOSCALE MODEL DATA TO ALGORITHMS FOR INFLIGHT ICING OVER THEALASKA REGION. Jeffrey S. Tilley, Univ. of Alaska, Fairbanks, AK; and D.-L. Wilkinson and M. K.Politovich

4 5 7 12.9 A PASSIVE MICROWAVE ICING AVOIDANCE SYSTEM (MIAS). R. C. Savage, Raytheon SystemsCo., Aurora, CO; and R. T. Lines, J. Cole, and G. G. Koenig

4 6 2 12.10 WEATHER SUPPORT TO DEICING DECISION MAKING (WSDDM): A WINTER WEATHERNOWCASTING SYSTEM. Roy Rasmussen, NCAR, Boulder, CO ; et al

4 6 7 12.11 COMBINING SATELLITE, RADAR, AND SURFACE OBSERVATIONS WITH MODEL DATA TOCREATE A BETTER AIRCRAFT ICING DIAGNOSIS. Frank McDonough, NCAR, Boulder, CO; and B.C. Bernstein

POSTER SESSION PI 3: COFFEE BREAK & ICING AND SYSTEMS POSTERS

4 7 2 PI3.1 COMPARISON OF RESEARCH AIRCRAFT OBSERVATIONS WITH NUMERICAL SIMULATIONSUSING A MIXED-PHASE CLOUD SCHEME. Paul A. Vaillancourt, AES, Dorval, PQ, Canada; and A.Tremblay, S. G. Cober, and G. A. Issac

PI3.2 SPECIFICATION AND TEST OF UPPER AIR MEASUREMENT ACCURACY AT THE UNITED STATESEASTERN RANGE. James P. McCann, Computer Sciences Raytheon, Patrick AFB, FL; and M. Maier

4 7 6 PI3.3 MULTIPURPOSE BROADCAST DATA LINK PILOT SURVEY. Dana E. Dornbusch, The MITRE Corp.,McLean, VA; and R. C. Strain

481 PI3.4 ACCURACY OF RUC-1 AND RUC-2 WIND AND AIRCRAFT TRAJECTORY FORECASTS ASDETERMINED BY ACARS OBSERVATIONS. Stanley G. Benjamin, NOAA/FSL, Boulder, CO; and B.E. Schwartz

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486 PI 3.5 AVIATION FORECASTS FROM THE RUC-2. Stanley G. Benjamin, NOAA/FSL, Boulder, CO; and J.M. Brown, K. J. Brundage, D. Kim, B. E. Schwartz, T. Smirnova, and T. L. Smith

PI3.6 DEVELOPMENT AND FLIGHT TEST OF A FAST, MINIATURE DEWPOINT HYGROMETER FORRADIOSONDE MEASUREMENTS OF TROPOSPHERIC HUMIDITY. Michael E. Hoenk, JPL, Pasadena,CA; and R. K. Watson and G. Cardell

491 PI3.8 AUTOMATED METEOROLOGICAL PROFILING SYSTEM SLATED FOR VANDENBERG AFB, CA.Christy Crosiar, 30th Weather Squadron, Vandenberg AFB, CA; and C. Koch

* PI 3.9 CHARACTERISTICS OF OPERATIONAL AIRCRAFT DATA. Patricia M. Pauley, NRL, Monterey, CA

493 P13.10 A CASE STUDY OF HIGH LEVEL ICING USING RUC MODEL DATA. Paul C. Fike,NOAA/NWS/NCEP/ AWC, Kansas City, MO

PI3.11 ACCURACY REQUIREMENTS FOR RUNWAY VISUAL RANGE SYSTEMS. David C. Burnham,Scientific & Engineering Solutions, Inc., Orleans, MA; and R. J. Pawlak

497 PI3.12 SCATTERING EFFECTS ON MICROWAVE PASSIVE REMOTE SENSING OF CLOUD PARAMETERS.Guifu Zhang, NCAR, Boulder, CO; and J. Vivekanandan and M. K. Politovich

502 PI 3.13 MULTI-FREQUENCY RADAR TECHNIQUE FOR DETECTING CLOUD PARAMETERS FOR PREDICTINGAIRCRAFT ICING POTENTIAL. George G. Koenig, Cold Regions Research & Engineering Lab.,Hanover, NH; and C. R. Ryerson, J. Mead, and A. Pazmany

PI3.14 PAPER WITHDRAWN

507 P13.15 OPTIMIZING THE ITWS ALGORITHM DESIGNED TO REMOVE ANOMALOUS PROPAGATIONGROUND CLUTTER FROM THE ASR-9 PRECIPITATION PRODUCT. Benjamin G. Boorman, MITLincoln Lab., Lexington, MA; and M. A. Isaminger and E. B. Mann

511 P13.16 AUTOMATED SURFACE OBSERVING SYSTEM AND THE HUMAN OBSERVATION: ACOMPARISON STUDY. Christy Crosiar, 30th Weather Squadron, Vandenberg AFB, CA; and R. D.Gonzalez

514 PI3.17 THE NEXRAD ENHANCEMENTS PRODUCT DEVELOPMENT TEAM. J. William Conway,NOAA/NSSL, Norman, OK; and M. D. Eilts

SESSION 14: SYSTEMS- REQUIREMENTS, DEVELOPMENT, AND OPERATIONAL IMPLE-MENTATION

517 14.1 THE MODERNIZATION OF FAA WEATHER SYSTEMS TO SUPPORT FREE FLIGHT. Alan Nierow,FAA, Washington, DC; and R. C. Showalter and C. G. Souders

522 14.2 DISTRIBUTION OF AVIATION WEATHER PRODUCTS TO THE COCKPIT. Albert Homans, ARINC,Inc., Annapolis, MD; and J. McGall and W. Fisher

14.3 IMPACT ON AIRCRAFT OPERATIONS OF PILOT ACCESS TO UPDATED AUTOMATEDTEMPERATURES. C. A. Askue, Air Force Inst. of Technology, Wright-Patterson AFB, OH; and T. H.Miner

526 14.4 AVIATION USER NEEDS FOR CONVECTIVE WEATHER FORECASTS. B. E. Forman, MIT LincolnLab., Lexington, MA; and M. M. Wolfson, R. G. Hallowell, and M. P. Moore

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531 14.5 EN ROUTE AIR TRAFFIC CONTROL USE OF NEXRAD INFORMATION: IMPROVEMENTS INSITUATIONAL AWARENESS LEADING TO POSSIBLE OPERATIONAL CONCEPT CHANGES INSEVERE WEATHER SCENARIOS. Steve Shema, FAA, Washington, DC; and R. C. Goff

536 14.6 THE ROLE OF ITWS IN THE MODERNIZATION OF THE NATIONAL AIRSPACE SYSTEM (NAS). AlanNierow, FAA, Washington, DC; and R. C. Showalter and C. G. Souders

541 14.7 ADDRESSING THE WEATHER DELAY PROBLEMS OF THE NEW YORK CITY AIRPORTS WITH THEINTEGRATED TERMINAL WEATHER SYSTEM. James E. Evans, MIT Lincoln Lab., Lexington, MA; andT. Bosco

545 14.8 DEVELOPING A WEATHER SYSTEM ARCHITECTURE AND WEATHER PRODUCT MIX THAT CANEFFECTIVELY ADDRESS THE EXPECTED CAPACITY CRISIS AT MAJOR TERMINALS: INSIGHTS FROMOPERATIONAL USAGE OF THE INTEGRATED TERMINAL WEATHER SYSTEM. James E. Evans, MITLincoln Lab., Lexington, MA

550 14.9 A THEORETICAL APPROACH TO AIR TRAFFIC DELAY REDUCTION USING STORM-SCALENUMERICAL WEATHER PREDICTION. Nicole M. Radziwill, South Dakota School of Mines andTechnology, Rapid City, SD

552 14.10 THE AMDAR PROGRAM. C. H. Sprinkle, NOAA/NWS, Silver Spring, MD

557 14.11 AVIATION WEATHER REQUIREMENTS IN THE AIR TRAFFIC MANAGEMENT SYSTEM. Charles G.Lindsey, NorthWest Research Associates, Inc., Bellevue, WA; and A. Burgermeister, A. Haraldsdottir,R. Schwab, P. van Tulder, and A. Warrren

561 14.12 DERIVED DECISION-BASED WEATHER NEEDS FOR THE AIR ROUTE TRAFFIC CONTROL CENTERTRAFFIC MANAGEMENT UNIT. Kevin P. Browne, FAA, Washington, DC; and J. W. Tauss

566 14.13 WARP: WEATHER AND RADAR PROCESSOR. Benn Deans, FAA, Washington, DC; and J. Johnson,R. Graff, and S. Walden

571 14.14 IMPROVING AVIATION WEATHER SERVICES THROUGH INTERAGENCY COORDINATION.Thomas S. Fraim, NOAA/OFCM, Silver Spring, MD

SESSION 15: SPECIAL APPLICATIONS AND TRAINING

573 15.1 WEATHER IMPACTS TO LAUNCH OPERATIONS AT VANDENBERG AFB CA. Steven P. DeSordi,USAF, Vandenberg AFB, CA

578 15.2 CURRENT ACTIVITIES AND CAPABILITIES OF THE TERRESTRIAL ENVIRONMENT GROUP ATNASA'S MARSHALL SPACE FLIGHT CENTER. Barry C. Roberts, NASA/MSFC, Huntsville, AL; andW. Batts

582 15.3 SMG'S WEATHER SUPPORT TO THE NASA X38 AND CRV PROJECTS. Dan G BellueNOAA/NWS, Houston, TX; and F. C. Brody

586 15.4 LIGHTNING CHARACTERISTICS AND LIGHTNING STRIKE PEAK CURRENT PROBABILITIES ASRELATED TO AEROSPACE VEHICLE OPERATIONS. Dale L Johnson, NASA/MSFC, Hunfsville, AL;and W. W. Vaughan

591 15.5 A VALIDATION STUDY OF THE AIR FORCE WEATHER AGENCY (AFWA) JETRAX CONTRAILFORECAST ALGORITHM. Michael K. Walters, Air Force Inst. of Technology, Wright-Patterson AFB,OH; and J. D. Shull

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596 15.6 EVALUATION OF THE BATTLESCALE FORECAST MODEL OVER OKLAHOMA WITH AN EMPHASISO N ARTILLERY ACCURACY ASSESSMENT. W. Ethan Cook, Environmental Verification and AnalysisCenter, Norman, OK; and J. S. Greene, P. A. Haines, and D. I. Knapp

5 9 9 15.7 VALIDATION OF SHORT TERM BATTLESCALE FORECAST MODEL FORECASTS WITH PROFILERAND UPPER AIR DATA COLLECTED OVER OKLAHOMA. P. A. Haines, Army Research Lab., WhiteSands Missile Range, NM; and T. Henmi, R. E. Dumais, and D. I. Knapp

6 0 4 15.8 AVIATION WEATHER TRAINING FOR COMMUTER AIRLINES: A FIRST STEP TOWARD THE GOALOF SAFER SKIES. Lawrence Astor, COMET/UCAR, Boulder, CO; and T. Spangler and M. La Tourette

6 0 8 15.9 THE ROLE OF WEATHER TRAINING IN FLIGHT OPERATIONS. Jim Foerster, DTN Kavouras WeatherServices, Burnsville, MN

611 15.10 INTERNET-BASED TRAINING FOR MORE ACCURATE DIAGNOSIS AND FORECASTING OFAVIATION WEATHER HAZARDS. Richard E. Cianflone, NOAA/NWS and UCAR/COMET, Boulder,CO

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