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                            |  | REPORTS - SPECIAL REPORTS |  |   
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            |  |  | Aviation and the Global Atmosphere |  |   
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            | Annex C: Acronyms, Abbreviations, and Units 
 1-D   One-Dimensional 
 2-D   Two-Dimensional 
 3-D   Three-Dimensional 
 ACAC   Arab Civil Aviation Commission
 ADS   Automatic Dependent Surveillance
 AEA   Association of European Airlines
 AEAP   Atmosphere Effects of Aviation
  Project 
 AER   Atmospheric and Environmental
  Research, Inc. 
 AESA   Atmospheric Effects of Stratospheric
  Aircraft 
 AFCAC   African Civil Aviation Commission
 AMIP   Atmospheric Model Intercomparison
  Project 
 ANCAT   Abatement of Noises Caused
  by Air Transport 
 ANDES   Aircraft Noise Design Effects
  Study 
 API   American Petroleum Institute
 APU   Auxiliary Power Unit 
 ASK   Available Seat-Kilometers
 ASM   Air Space Management 
 AST   Advanced Subsonic Technology
 ATC   Air Traffic Control 
 ATFM   Air Traffic Flow Management
 ATM   Air Traffic Management
 ATP   Advanced Turboprop 
 ATR   Air Traffic Region 
 ATS   Air Traffic Services 
 ATTAS   Advanced Technology Testing
  Aircraft System 
 AVHRR   Advanced Very High-Resolution
  Radiometer 
 BC   Black Carbon 
 BWB   Blended Wing Body 
 CAEP   Committee on Aviation Environmental
  Protection 
 CCM3   Community Climate Model 3
 CE   Centre for Energy Conservation
  and Environmental Technology 
 CFC   Chlorofluorocarbon 
 CFD   Computational Fluid Dynamics
 CGCM   Coupled General Circulation
  Model 
 CI   Chemi-Ion 
 CN   Condensation Nucleus 
 CNS/ATM   Communications, Navigation,
  and Surveillance 
 CSIRO   Commonwealth Scientific and
  Industrial Research Organization 
 CTM   Chemical Transport Model
 DAC   Dual Annular Combustor
 DEF STAN   Defence Standards
 DERA   Defence Evaluation and Research 
  Agency
DISORT   Discrete Ordinate Radiative Transfer 
  
   DJF   December-January-February
  
   DLR    Deutsches Zentrum für
    Luft- und Raumfahrt 
   DOT   Department of Transportation
  
   DTI   Department of Trade and Industry
  
   DTR   Diurnal Surface Temperature
    Range 
   DU   Dobson Unit 
   EASG   Economic Analysis Subgroup
  
   EATMS   European ATM System
  
   ECMWF   European Centre for Medium-Range
    Weather Forecasts 
   ECON   Most Efficient Cruise Speed
  
   ECS   Engine Control System
  
   EDF   Environmental Defense Fund
  
   EEI   Effective Emissions Index
  
   EI   Emissions Index 
   EIDG   Emissions Inventory Database
    Group 
   EISG   Emissions Inventory Sub-Group
  
   ENSO   El Niño Southern Oscillation
  
   ERAA   European Regions Airline Association
  
   ETOPs   Extended Twin Operations
  
   EUROCONTROL   European Organisation
    for Safety and Navigation 
   FADEC   Full Authority Digital Engine
    Control 
   FANS   Future Air Navigation System
  
   FEMs   Finite Element Models
  
   FESG   Forecast and Economics Sub-Group
  
   FIR   Flight Information Region
  
   FLEM   Flights and Emissions model
  
   FMS   Flight Management System
  
   FPC   Focal Point on Charges
  
   FSU   Former Soviet Union
  
   FUA   Flexible Use of Airspace
  
   GAMA   General Aviation Manufacturers
    Association 
   GCM   General Circulation Model
  
   GDP   Gross Domestic Product
  
   GFDC   Geophysical Fluid Dynamics
    Laboratory 
   GISS   Goddard Institute for Space
    Studies 
   GNBS   Global Navigation Satellite
    System 
   GOES   Geostationary Operational
    Environmental Satellite 
   GPS   Global Positioning System
  
   GSFC   Goddard Space Flight Center
  
   GWP   Global Warming Potential
  
   HALOE   Halogen Occultation Experiment
  
   HC   Hydrocarbon 
   HCFC   Hydrochlorofluorocarbon
  
   HF   High Frequency 
  
HFC   Hydrofluorocarbon
     HIRS   High-Resolution Infrared
      Radiation Sounder 
     HSCT   High Speed Civil Transport
    
     HYPR   Supersonic/Hypersonic Transport
    
     IATA   International Air Transport
      Association 
     ICAO   International Civil Aviation
      Organization 
     ICAS   International Council on
      Aeronautical Sciences 
     ICCAIA   International Coordinating
      Council of Aerospace Industries Association 
     IFR   Instrument Flight Rule
    
     IHPTET   Integrated High Performance
      Turbine Engine 
     IMC   Instrument Meteorological
      Conditions 
     IPCC   Intergovernmental Panel
      on Climate Change 
     IR   Infrared 
     IS92a   IPCC Scenarios 1992a
    
     ISA   International Standard Atmosphere
    
     ISCCP   International Satellite
      Cloud Climatology Project 
     IWC   Ice-Water Content
    
     IWP   Ice-Water Path 
     JGR   Journal of Geophysical Research
    
     JJA   June-July-August 
     LACAC   Latin American Civil Aviation
      Commission 
     LaRC   Langley Research Center
    
     LBO   Lean Blow Out 
     LES   Large Eddy Simulation
    
     LIDAR   Light Detection and Ranging
    
     LLNL   Lawrence Livermore National
      Laboratory 
     LPP   Lean Pre-Mixed Pre-Vaporized
    
     LRC   Long-Range Cruise
    
     LS   Lower Stratosphere
    
     LTO   Landing and Take-Off
    
     LW    Long-Wave 
     MD   Mass Density 
     MIT   Massachusetts Institute of
      Technology 
     MRC   Maximum Range Cruise
    
     MS   Middle Stratosphere
    
     NASA   National Aeronautics and
      Space Administration 
     NAT   Nitric Acid Trihydrate
    
     NCAR   National Center for Atmospheric
      Research 
     NCEP   National Centers for Environmental
      Prediction 
     NSA   Nitro Sylsulfuric Acid
    
     NH   Northern Hemisphere
    
     NIPER   National Institute for
      Petroleum and Energy Research 
    
   NMC    National Meteorological Center
       NMHC   Non-Methane Hydocarbons
      
       NOA   North Atlantic Oscillation
      
       NOAA   National Oceanic and Atmospheric
	Administration 
       NOxAR   Nitrogen Oxides and Ozone
	Measurements along Air Routes 
       NPRA   National Petroleum Refiners
	Association 
       OA   Objectively Analyzed
      
       OAG   Official Airline Guide
      
       OECD   Organisation for Economic
	Cooperation and Development 
       OEW   Operating Empty Weight
      
       OPMET   Operational Meteorological
      
       OPR   Overall Pressure Ratio
      
       PAI   Propulsion/Airframe Integration
      
       PAN   Peroxyacetylnitrate
      
       PIANO   Project Interactive Analysis
	and Optimization 
       PMS   Performance Management
	System 
       PNA   Pacific North America
      
       ppbv   Parts per Billion by Volume
      
       ppmm   Parts per Million by Mass
      
       ppmv   Parts per Million by Volume
      
       PSC   Polar Stratospheric Cloud
      
       PSC1   Type I Polar Stratospheric
	Cloud 
       PSC2   Type II Polar Stratospheric
	Cloud 
       RBQQ   Rich Burn Quick Quench
      
       RF   Radiative Forcing
      
       RFI   Radiative Forcing Index
      
       RH   Relative Humidity
      
       RNAV   Area Navigation
      
       RPK   Revenue Passenger-Kilometer
      
       RQL   Rich Quench Lean
      
       RVSM   Reduced Vertical Separation
      
       SAD    Surface Area Density
      
       SAGE   Stratospheric Aerosol
	and Gas Experiment 
       SAM   Stratospheric Aerosol Measurement
      
       SAO   Background Sulfate Surface
	Area Density 
       SARP   Standard and Recommended
	Practice 
       SA1   Sulfate Surface Area Density
	Scenario based upon 500 HSCT Fleet with 50% Conversion of Fuel Sulfur
	to Particles 
       SA2   Sulfate Surface Area Density
	Scenario based upon 1000 HSCT Fleet with 50% Conversion of Fuel Sulfur
	to Particles 
       SA3   Sulfate Surface Area Density
	Scenario based upon 500 HSCT Fleet with 1000% Conversion of Fuel Sulfur
	to Particles 
      
SA4   Sulfate Surface Area Density Scenario
	  based upon 1000 HSCT Fleet with 100% Conversion of Fuel Sulfur
	  to Particles 
	 SA5   Sulfate Surface Area
	  Density Scenario based upon 500 HSCT Fleet with 10% Conversion of Fuel
	  Sulfur to Particles 
	 SA6   Sulfate Surface Area
	  Density Scenario based upon 1000 HSCT Fleet with 10% Conversion of Fuel
	  Sulfur to Particles 
	 SA7   Sulfate Surface Area
	  Density Scenario based upon 500 HSCT Fleet with 0% Conversion of Fuel
	  Sulfur to Particles 
	 SBSTA   Subsidiary Body for
	  Scientific and Technological Advice 
	 SBUV   Solar Backscater Ultraviolet
	
	
         SH   Southern Hemisphere
            T/W   Thrust/Weight 
           UARS   Upper Atmosphere Research
	    Satellite 
	   UDF   Unducted Fan
	  
	   UiO   Universitet I Oslo
	  
	   UKMO   United Kingdom Meteorological
	    Office 
	   UN   United Nations
	  
	   UNIVAQ   Universita' degli
	    Studi-l' Acquila 
	   UNEP   United Nations Environment
	    Programme 
	   UT   Upper Troposphere
	  
	   UV   Ultraviolet 
	   UV-B   Ultraviolet-B
	  
	   UVery   Erythemal
	    Dose Rate 
	   VOC   Volatile Organic Compound
	  
	   WAFS   World Area Forecast
	    System 
	   WCRP   World Climate Research
	    Programme 
	   WMO   World Meteorological
	    Organization 
	   WWF   World Wide Fund for
	    Nature 
	   UNITS
 
	    
	      | SI (Systéme Internationale) Units
 
 |  
	      |  Physical Quantity
	       | Name of Unit | Symbol |  
	      | 
 |  
	      | length
	       | meter | m |  
	      | mass
	       | kilogram | kg |  
	      | time
	       | second | s |  
	      | thermodynamic temperature
	       | kelvin | K |  
	      | amount of substance | mole | mol |  
	      | 
 |        
  
    | Special Names and Symbols for Certain SI-Derived Units
 
 |  
    |  Physical Quantity
     | Name of Unit | Symbol of Unit | Definition of Unit |  
    | 
 |  
    | force
     | newton | N | kg m s-2 |  
    | pressure
     | pascal | Pa | kg m-1 s-2 (= Nm-2) |  
    |  energy
     | joule | J | kg m2 s-2 |  
    | power
     | watt | W | kg m2 s-3 (= Js-1) |  
    | frequency
     | hertz | Hz | s-1 (cycle per second) |  
    | 
 |    
  
    | Decimal Fractions and Multiples of SI Units Having Special
	Names
 
 |  
    |  Physical Quantity
     | Name of Unit | Symbol of Unit | Definition of Unit |  
    | 
 |  
    | length
     | ĺngstrom | Å | 10-10 m = 10-8cm |  
    | length
     | micrometer | µm | 10-6m = µm |  
    | area
     | hectare | ha | 104 m2 |  
    | force
     | dyne | dyn | 10-5 N |  
    | pressure
     | bar | bar | 105 N m-2 |  
    | pressure
     | millibar | mb | 1hPa |  
    | weight
     | ton | t | 103 kg |  
    | 
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