BUFR Reference Manual

Transcription

1 BUFR Reference Manual Milan Dragosavac Operations Department August 2008

2 c Copyright 2008 European Centre for Medium-Range Weather Forecasts Shinfield Park, Reading, RG2 9AX, United Kingdom Literary and scientific copyrights belong to ECMWF and are reserved in all countries. The information within this publication is given in good faith and considered to be true, but ECMWF accepts no liability for error, omission and for loss or damage arising from its use.

3 CONTENTS Contents 1 Introduction 2 2 BUFR Tables Bufr Table A Bufr Table B Bufr Table C - Data description operators Bufr Code and Flag Tables Bufr Table D Bufr Templates Ecmwf observation subtypes Synop land Synop land second record Synop land (auto) Synop land auto second record Synop land high level station Synop ship abbreviated Synop ship Synop ship second record Synop ship (auto) Synop ship auto second record Synop ship reduced Drifter Satem 500 km low level Satem 500 km precipitable water Satem 500 km low level Satob wind Satob wind and temperature data Satob section High Density winds Pilot land ECMWF Technical Notes 1

4 BUFR Reference Manual 3.22 Wind profiler (USA) Wind profiler (Europe) Temp land Temp ship AIREP data AMDAR data ACAR data Bogus data RTOVS ATOVS data ERS1/2 Wave scatterometer ERS1/2 Radar Altimeter SSMI brightness temperatures TRMR rain data Soil temperatures Tropical storm data ATOVS 1C Ecmwf calibrated Satob section Wind profiler ROCOB data SSMI mapped data TRMM brightness temperatures TRMR rain data Driftr oceanographic Bathy oceanographic QSCAT data Metar data Surface ozone Total column ozone Ozone profile JASON data Geostationary radiances ECMWF Technical Notes

5 CONTENTS 3.54 Envisat MERIS data Envisat ASAR data Envisat AATSR data Envisat GOMOS data Envisat MIPAS data Envisat SCIAMACHY data Envisat RA-2 data Bufr Table B differences ECMWF Technical Notes 3

6 BUFR Reference Manual 1 Introduction The Bufr reference Manual is compiled to accompany Bufr User s Guide Manual. It describes the latest Bufr Tables and ECMWF observation types and subtypes. For each subtype there is a template describing the observation. 4 ECMWF Technical Notes

7 2 BUFR Tables 2.1 Bufr Table A This table contains Bufr categories which shall be packed in the 9th byte of the Section 1. Code figure Meaning 0 Surface data - land 1 Surface data - sea 2 Vertical soundings (other than satellite) 3 Vertical soundings (satellite) 4 Single level upper-air data (other than satellite) 5 Single level upper-air data (satellite) 6 Radar data 7 Synoptic features 8 Physical/chemical constituents 9 Dispersal and transport 10 Radiological data 11 Bufr tables, complete replacement or update 12 Surface data (satellite) Reserved 20 Status information 21 Radiance (satellite measured) Reserved 31 Oceanographic data Reserved 101 Image data Reserved For experimental use 255 Indicator for local use, with sub-category ECMWF Technical Notes 5

8 BUFR Reference Manual 2.2 Bufr Table B The latest Bufr Table B version is TABLE A: ENTRY CCITTIA TABLE A: DATA CATEGORY DESCRIPTION, LINE 1 CCITTIA TABLE A: DATA CATEGORY DESCRIPTION, LINE 2 CCITTIA BUFR/CREX MASTER TABLE CCITTIA BUFR/CREX EDITION NUMBER CCITTIA BUFR MASTER TABLE VERSION NUMBER CCITTIA CREX MASTER TABLE VERSION NUMBER CCITTIA BUFR LOCAL TABLE VERSION NUMBER CCITTIA F DESCRIPTOR TO BE ADDED OR DEFINED CCITTIA X DESCRIPTOR TO BE ADDED OR DEFINED CCITTIA Y DESCRIPTOR TO BE ADDED OR DEFINED CCITTIA ELEMENT NAME, LINE 1 CCITTIA ELEMENT NAME, LINE 2 CCITTIA UNITS NAME CCITTIA UNITS SCALE SIGN CCITTIA UNITS SCALE CCITTIA UNITS REFERENCE SIGN CCITTIA UNITS REFERENCE VALUE CCITTIA ELEMENT DATA WIDTH CCITTIA DESCRIPTOR DEFINING SEQUENCE CCITTIA WMO BLOCK NUMBER NUMERIC WMO STATION NUMBER NUMERIC WMO REGION NUMBER/GEOGRAPHICAL AREA CODE TABLE WMO REGION SUB-AREA (SEE NOTE 9) NUMERIC BUOY/PLATFORM IDENTIFIER NUMERIC AIRCRAFT FLIGHT NUMBER CCITTIA SATELLITE IDENTIFIER CODE TABLE AIRCRAFT REGISTRATION NUMBER OR OTHER IDENTIFICATION CCITTIA TYPE OF COMMERCIAL AIRCRAFT CCITTIA STATIONARY BUOY PLATFORM IDENTIFIER; E.G. C-MAN BUOYS CCITTIA SHIP OR MOBILE LAND STATION IDENTIFIER CCITTIA DIRECTION OF MOTION OF MOVING OBSERVING PLATFORM** DEGREE TRUE SPEED OF MOTION OF MOVING OBSERVING PLATFORM* M/S PLATFORM DRIFT SPEED (HIGH PRECISION) M/S STATION OR SITE NAME CCITTIA SHORT STATION OR SITE NAME CCITTIA LONG STATION OR SITE NAME CCITTIA WMO REGION SUB-AREA NUMERIC SYNOPTIC FEATURE IDENTIFIER NUMERIC NAME OF FEATURE (SEE NOTE 11) CCITTIA OBSERVATION SEQUENCE NUMBER NUMERIC STORM IDENTIFIER CCITTIA WMO STORM NAME CCITTIA WMO LONG STORM NAME CCITTIA IDENTIFICATION OF ORIGINATING/GENERATING CENTRE (SEE NOTE 10) CODE TABLE GENERATING APPLICATION CODE TABLE IDENTIFICATION OF ORIGINATING/GENERATING CENTRE CODE TABLE IDENTIFICATION OF ORIGINATING/GENERATING SUB-CENTRE CODE TABLE ORIGINATING CENTRE COMMON CODE TABLE C AGENCY IN CHARGE OF OPERATING THE OBSERVING PLATFORM CODE TABLE ABSOLUTE PLATFORM VELOCITY - FIRST COMPONENT (SEE NOTE 6) M/S ABSOLUTE PLATFORM VELOCITY - SECOND COMPONENT (SEE NOTE 6) M/S ABSOLUTE PLATFORM VELOCITY - THIRD COMPONENT (SEE NOTE 6) M/S PLATFORM TRANSMITTER ID NUMBER NUMERIC PLATFORM TRANSMITTER ID NUMBER CCITTIA AIRCRAFT REPORTING POINT (BEACON IDENTIFIER) CCITTIA SHORT ICAO LOCATION INDICATOR CCITTIA ICAO LOCATION INDICATOR CCITTIA RUNWAY DESIGNATOR CCITTIA TIDE STATION IDENTIFICATION CCITTIA SHIP LINE NUMBER ACCORDING TO SOOP CCITTIA RADIOSONDE SERIAL NUMBER CCITTIA RADIOSONDE ASCENSION NUMBER (SEE NOTE 12) NUMERIC RADIOSONDE RELEASE NUMBER (SEE NOTE 12) NUMERIC OBSERVING PLATFORM MANUFACTURER S MODEL CCITTIA OBSERVING PLATFORM MANUFACTURER S SERIAL NUMBER CCITTIA WMO MARINE OBSERVING PLATFORM EXTENDED IDENTIFIER NUMERIC TECHNIQUE FOR MAKING UP INITIAL PERTURBATIONS CODE TABLE ENSEMBLE MEMBER NUMBER NUMERIC TYPE OF ENSEMBLE FORECAST CODE TABLE BALLOON LOT NUMBER CCITTIA WBAN NUMBER NUMERIC OBSERVER IDENTIFICATION CCITTIA STATION ACQUISITION CCITTIA TYPE OF STATION CODE TABLE TYPE OF INSTRUMENTATION FOR WIND MEASUREMENT FLAG TABLE TYPE OF MEASURING EQUIPMENT USED CODE TABLE TYPE OF INSTRUMENTATION FOR EVAPORATION MEASUREMENT OR TYPE OF C CODE TABLE PRECISION OF TEMPERATURE OBSERVATION K RADIOSONDE TYPE CODE TABLE RADIOSONDE COMPUTATIONAL METHOD CODE TABLE SOLAR AND INFRARED RADIATION CORRECTION CODE TABLE ECMWF Technical Notes

9 2.2 Bufr Table B TRACKING TECHNIQUE/STATUS OF SYSTEM USED CODE TABLE RADIOSONDE COMPLETENESS CODE TABLE RADIOSONDE CONFIGURATION FLAG TABLE SATELLITE INSTRUMENTS CODE TABLE SATELLITE CLASSIFICATION CODE TABLE SATELLITE INSTRUMENT DATA USED IN PROCESSING FLAG TABLE SATELLITE DATA-PROCESSING TECHNIQUE USED FLAG TABLE SATELLITE DERIVED WIND COMPUTATION METHOD CODE TABLE INTEGRATED MEAN HUMIDITY COMPUTATIONAL METHOD CODE TABLE SATELLITE CHANNEL(S) USED IN COMPUTATION FLAG TABLE CROSS TRACK RESOLUTION M ALONG TRACK RESOLUTION M SEGMENT SIZE AT NADIR IN X DIRECTION M SEGMENT SIZE AT NADIR IN Y DIRECTION M METHOD OF CURRENT MEASUREMENT CODE TABLE DURATION AND TIME OF CURRENT MEASUREMENT CODE TABLE INDICATOR FOR DIGITIZATION CODE TABLE METHOD OF SALINITY/DEPTH MEASUREMENT CODE TABLE DROGUE TYPE CODE TABLE CABLE LENGTH M BUOY TYPE CODE TABLE METHOD OF TIDAL OBSERVATION CODE TABLE METHOD OF WATER TEMPERATURE AND/OR SALINITY MEASUREMENT CODE TABLE METHOD OF WET-BULB TEMPERATURE MEASUREMENT CODE TABLE METHOD OF REMOVING VELOCITY AND MOTION OF PLATFORM FROM CURRENT CODE TABLE METHOD FOR ESTIMATING REPORTS RELATED TO SYNOPTIC FEATURES CODE TABLE INDICATOR FOR SEA SURFACE CURRENT SPEED CODE TABLE INDICATOR FOR METHOD OF CALCULATING SPECTRAL WAVE DATA CODE TABLE INDICATOR FOR TYPE OF PLATFORM CODE TABLE WAVE MEASUREMENT INSTRUMENTATION CODE TABLE SATELLITE SENSOR INDICATOR CODE TABLE GEOSTATIONARY SATELLITE DATA-PROCESSING TECHNIQUE USED FLAG TABLE GEOSTATIONARY SOUNDER SATELLITE CHANNELS USED FLAG TABLE INDICATOR TO SPECIFY OBSERVING METHOD FOR EXTREME TEMPERATURES CODE TABLE GEOSTATIONARY IMAGER SATELLITE CHANNELS USED FLAG TABLE GOES-I/M BRIGHTNESS TEMPERATURE CHARACTERISTICS CODE TABLE GOES-I/M SOUNDINGS PARAMETER CHARACTERISTICS CODE TABLE GEOSTATIONARY SOUNDINGS STATISTICAL PARAMETERS CODE TABLE GEOSTATIONARY SOUNDINGS ACCURACY STATISTICS CODE TABLE ORIGIN OF FIRST GUESS INFORMATION FOR GOES-I/M SOUNDINGS CODE TABLE VALID TIMES OF FIRST GUESS INFORMATION FOR GOES-I/M SOUNDINGS CODE TABLE ORIGIN OF ANALYSIS INFORMATION FOR GOES-I/M SOUNDINGS CODE TABLE ORIGIN OF SURFACE INFORMATION FOR GOES-I/M SOUNDINGS CODE TABLE AIRCRAFT NAVIGATIONAL SYSTEM CODE TABLE TYPE OF AIRCRAFT DATA RELAY SYSTEM CODE TABLE AIRCRAFT ROLL ANGLE DEGREE AIRCRAFT ROLL ANGLE QUALITY CODE TABLE ACARS GROUND RECEIVING STATION CCITTIA RADIOSONDE GROUND RECEIVING SYSTEM CODE TABLE RADIOSONDE OPERATING FREQUENCY Hz ORIGINAL SPECIFICATION OF LATITUDE/LONGITUDE CODE TABLE BALLOON MANUFACTURER CODE TABLE TYPE OF BALLOON CODE TABLE WEIGHT OF BALLOON KG TYPE OF BALLOON SHELTER CODE TABLE TYPE OF GAS USED IN BALLOON CODE TABLE AMOUNT OF GAS USED IN BALLOON KG BALLOON FLIGHT TRAIN LENGTH M ENTRY SENSOR 4/20 MA A TYPE OF PRESSURE SENSOR CODE TABLE TYPE OF TEMPERATURE SENSOR CODE TABLE TYPE OF HUMIDITY SENSOR CODE TABLE RADAR CONSTANT db TYPE OF ANTENNA CODE TABLE ANTENNA HEIGHT ABOVE TOWER BASE M RADOME FLAG TABLE ANTENNA POLARISATION CODE TABLE MAXIMUM ANTENNA GAIN db DB BEAMWIDTH DEGREE SIDELOBE SUPPRESSION db CROSSPOL DISCRIMINATION (ON AXIS) db ANTENNA SPEED (AZIMUTH) DEGREE/S ANTENNA SPEED (ELEVATION) DEGREE/S RADAR INCIDENCE ANGLE DEGREE RADAR LOOK ANGLE DEGREE NUMBER OF AZIMUTH LOOKS NUMERIC ANTENNA EFFECTIVE SURFACE AREA M** TYPE OF SURFACE OBSERVING EQUIPMENT CODE TABLE PERCENTAGE OF 320 MHZ BAND PROCESSED % PERCENTAGE OF 80 MHZ BAND PROCESSED % PERCENTAGE OF 20 MHZ BAND PROCESSED % RA-2 INSTRUMENT OPERATIONS CODE TABLE OCEAN WAVE FREQUENCY Hz MEAN FREQUENCY Hz FREQUENCY AGILITY RANGE Hz PEAK POWER W AVERAGE POWER W PULSE REPETITION FREQUENCY Hz PULSE WIDTH S RECEIVER INTERMEDIATE FREQUENCY Hz INTERMEDIATE FREQUENCY BANDWIDTH Hz MINIMUM DETECTABLE SIGNAL db DYNAMIC RANGE db ECMWF Technical Notes 7

10 BUFR Reference Manual SENSITIVITY TIME CONTROL (STC) FLAG TABLE AZIMUTH POINTING ACCURACY DEGREE ELEVATION POINTING ACCURACY DEGREE ANTENNA BEAM AZIMUTH DEGREE ANTENNA ELEVATION DEGREE RANGE PROCESSED BY RANGE ATTENUATION CORRECTION M SATELLITE RADAR BEAM AZIMUTH ANGLE DEGREE MEASUREMENT TYPE CCITTIA OZONE INSTRUMENT SERIAL NUMBER/ IDENTIFICATION CCITTIA OZONE INSTRUMENT TYPE CODE TABLE LIGHT SOURCE TYPE FOR BREWER SPECTRO PHOTOMETER CODE TABLE WAVE LENGTH SETTING FOR DOBSON INSTRUMENTS CODE TABLE SOURCE CONDITIONS FOR DOBSON INSTRUMENTS CODE TABLE DATA COLLECTION AND/OR LOCATION SYSTEM CODE TABLE TYPE OF DATA BUOY CODE TABLE TOVS/ATOVS/AVHRR INSTRUMENTATION CHANNEL NUMBER CODE TABLE RADIOMETER IDENTIFIER CODE TABLE SATELLITE INSTRUMENT USED IN DATA PROCESSING(6) FLAG TABLE SATELLITE CHANNEL CENTRE FREQUENCY Hz SATELLITE CHANNEL BAND WIDTH Hz PERCENTAGE OF VALID KU OCEAN RETRACKER MEASUREMENTS % PERCENTAGE OF VALID S OCEAN RETRACKER MEASUREMENTS % RA-2 INSTRUMENT FLAG TABLE MWR INSTRUMENT FLAG TABLE WAVE LENGTH OF THE RADAR CODE TABLE HEIGHT ASSIGNMENT METHOD CODE TABLE TRACER CORRELATION METHOD CODE TABLE RADIANCE TYPE CODE TABLE RADIANCE COMPUTATIONAL METHOD CODE TABLE HYDROSTATIC PRESSURE OF LOWER END OF CABLE (THERMISTOR STRING) PA ANEMOMETER TYPE CODE TABLE PRODUCT TYPE FOR RETRIEVED ATMOSPHERIC GASES CODE TABLE SQUARE OF THE OFF NADIR ANGLE (7) DEGREE MEAN ACROSS TRACK PIXEL NUMBER NUMERIC METHOD OF PRECIPITATION MEASUREMENT CODE TABLE METHOD OF STATE OF GROUND MEASUREMENT CODE TABLE METHOD OF SNOW DEPTH MEASUREMENT CODE TABLE METHOD OF LIQUID CONTENT MEASUREMENT OF PRECIPITATION CODE TABLE TYPE OF SKY CONDITION ALGORITHM CODE TABLE MAIN PRESENT WEATHER DETECTING SYSTEM CODE TABLE SUPPLEMENTARY PRESENT WEATHER SENSOR FLAG TABLE VISIBILITY MEASUREMENT SYSTEM CODE TABLE CLOUD DETECTION SYSTEM CODE TABLE TYPE OF LIGHTNING DETECTION SENSOR CODE TABLE METHOD OF EVAPORATION MEASUREMENT CODE TABLE CAPABILITY TO DETECT PRECIPITATION PHENOMENA FLAG TABLE CAPABILITY TO DETECT OTHER WEATHER PHENOMENA FLAG TABLE CAPABILITY TO DETECT OBSCURATION FLAG TABLE CAPABILITY TO DISCRIMINATE LIGHTNING STRIKES FLAG TABLE LAGRANGIAN DRIFTER SUBMERGENCE (% TIME SUBMERGED) % YEAR YEAR MONTH MONTH DAY DAY HOUR HOUR MINUTE MINUTE SECOND SECOND SECONDS WITHIN A MINUTE (MICROSECOND ACCURACY) SECOND TIME INCREMENT YEAR TIME INCREMENT MONTH TIME INCREMENT DAY TIME INCREMENT HOUR TIME INCREMENT MINUTE TIME INCREMENT SECOND REFERENCE TIME PERIOD FOR ACCUMULATED OR EXTREME DATA MINUTE TIME PERIOD OR DISPLACEMENT YEAR TIME PERIOD OR DISPLACEMENT MONTH TIME PERIOD OR DISPLACEMENT DAY TIME PERIOD OR DISPLACEMENT HOUR TIME PERIOD OR DISPLACEMENT MINUTE TIME PERIOD OR DISPLACEMENT SECOND DURATION OF TIME RELATING TO FOLLOWING VALUE HOUR DURATION OF TIME RELATING TO FOLLOWING VALUE MINUTE TIME DIFFERENCE, UTC -LMT (SEE NOTE 6) MINUTE DAY OF THE YEAR DAY PRINCIPAL TIME OF DAILY READING OF MAXIMUM TEMPERATURE HOUR PRINCIPAL TIME OF DAILY READING OF MINIMUM TEMPERATURE HOUR NUMBER OF DAYS WITH PRECIPITATION EQUAL TO OR MORE THAN 1 MM NUMERIC TIMES OF OBSERVATION USED TO COMPUTE THE REPORTED MEAN VALUES FLAG TABLE SHORT TIME INCREMENT MINUTE SHORT TIME PERIOD OR DISPLACEMENT DAY SHORT TIME PERIOD OR DISPLACEMENT HOUR SHORT TIME PERIOD OR DISPLACEMENT MINUTE AVERAGING PERIOD FOR FOLLOWING VALUE CODE TABLE LONG TIME PERIOD OR DISPLACEMENT SECOND LATITUDE (HIGH ACCURACY) DEGREE LATITUDE (COARSE ACCURACY) DEGREE LATITUDE INCREMENT (HIGH ACCURACY) DEGREE LATITUDE INCREMENT (COARSE ACCURACY) DEGREE LATITUDE DISPLACEMENT (HIGH ACCURACY) DEGREE LATITUDE DISPLACEMENT (COARSE ACCURACY) DEGREE BEARING OR AZIMUTH DEGREE TRUE SOLAR AZIMUTH DEGREE TRUE SUN TO SATELLITE AZIMUTH DIFFERENCE DEGREE ECMWF Technical Notes

11 2.2 Bufr Table B DIRECTION (SPECTRAL) DEGREE ROW NUMBER NUMERIC PIXEL SIZE ON HORIZONTAL - 1 M ALONG TRACK ROW NUMBER NUMERIC SHIP TRANSECT NUMBER ACCORDING TO SOOP NUMERIC ORBIT NUMBER NUMERIC SCAN LINE NUMBER NUMERIC CHANNEL NUMBER NUMERIC FIELD OF VIEW NUMBER NUMERIC SATELLITE CYCLE NUMBER NUMERIC CHANNEL NUMBER INCREMENT NUMERIC FIELD OF VIEW NUMBER INCREMENT NUMERIC Y ANGULAR POSITION FROM CENTRE OF GRAVITY DEGREE Z ANGULAR POSITION FROM CENTRE OF GRAVITY DEGREE LONGITUDE (HIGH ACCURACY) DEGREE LONGITUDE (COARSE ACCURACY) DEGREE LONGITUDE INCREMENT (HIGH ACCURACY) DEGREE LONGITUDE INCREMENT (COARSE ACCURACY) DEGREE LONGITUDE DISPLACEMENT (HIGH ACCURACY) DEGREE LONGITUDE DISPLACEMENT (COARSE ACCURACY) DEGREE DISTANCE M WAVE NUMBER (SPECTRAL) RAD/M COLUMN NUMBER NUMERIC PIXEL SIZE ON HORIZONTAL - 2 M CROSS-TRACK CELL NUMBER NUMERIC RADIUS OF CONFIDENCE M HEIGHT OF STATION (SEE NOTE 1) M HEIGHT OR ALTITUDE M GEOPOTENTIAL M**2/S** PRESSURE PA HEIGHT INCREMENT M HEIGHT ABOVE STATION M HEIGHT M GEOPOTENTIAL M**2/S** GEOPOTENTIAL HEIGHT GPM FLIGHT LEVEL M ELEVATION (SEE NOTE 2) DEGREE SOLAR ELEVATION DEGREE SATELLITE ZENITH ANGLE DEGREE SOLAR ZENITH ANGLE DEGREE SATELLITE ZENITH ANGLE DEGREE HEIGHT OF STATION GROUND ABOVE MEAN SEA LEVEL (SEE NOTE 3) M HEIGHT OF BAROMETER ABOVE MEAN SEA LEVEL (SEE NOTE 4) M HEIGHT OF SENSOR ABOVE LOCAL GROUND (OR DECK OF MARINE PLATFORM) M HEIGHT OF SENSOR ABOVE WATER SURFACE (SEE NOTE 6) M IMPACT PARAMETER (SEE NOTE 8) M DEPTH BELOW LAND SURFACE M DEPTH BELOW SEA/WATER SURFACE M DEPTH BELOW SEA/WATER SURFACE M REPRESENTATIVE HEIGHT OF SENSOR ABOVE STATION (SEE NOTE 7) M WATER PRESSURE PA DROGUE DEPTH M VERTICAL SOUNDING SIGNIFICANCE FLAG TABLE VERTICAL SIGNIFICANCE (SURFACE OBSERVATIONS) CODE TABLE VERTICAL SIGNIFICANCE (SATELLITE OBSERVATIONS) CODE TABLE PHASE OF AIRCRAFT FLIGHT CODE TABLE METEOROLOGICAL ATTRIBUTE SIGNIFICANCE CODE TABLE OZONE VERTICAL SOUNDING SIGNIFICANCE FLAG TABLE DIMENSIONAL SIGNIFICANCE CODE TABLE RADIATION VERTICAL SOUNDING SIGNIFICANCE FLAG TABLE DETAILED PHASE OF FLIGHT CODE TABLE SURFACE QUALIFIER (TEMPERATURE DATA) CODE TABLE METEOROLOGICAL FEATURE CODE TABLE LAND/SEA QUALIFIER CODE TABLE DAY/NIGHT QUALIFIER CODE TABLE QUALIFIER FOR RUNWAY VISUAL RANGE CODE TABLE CHANGE QUALIFIER OF A TREND-TYPE FORECAST OR AN AERODROME FORECA CODE TABLE QUALIFIER OF THE TIME WHEN THE FORECAST CHANGE IS EXPECTED CODE TABLE SEAWINDS LAND/ICE SURFACE TYPE FLAG TABLE TOTAL NUMBER OF MISSING ENTITIES (WITH RESPECT TO ACCUMULATION O NUMERIC TIME SIGNIFICANCE CODE TABLE TOTAL NUMBER (WITH RESPECT TO ACCUMULATION OR AVERAGE) NUMERIC FIRST ORDER STATISTICS CODE TABLE DIFFERENCE STATISTICS CODE TABLE TIME DIFFERENCE QUALIFIER CODE TABLE REMOTLY SENSED SURFACE TYPE CODE TABLE MANUAL ON CODES (VOLUME I.1, SECTION C) CODE TABLE FROM WHICH DA NUMERIC DATA CATEGORY CREX TABLE A NUMERIC METHOD OF DERIVATION OF PERCENTAGE CONFIDENCE CODE TABLE TYPE OF MONITORING EXERCISE CODE TABLE TYPE OF CENTRE OR STATION PERFORMING MONITORING CODE TABLE TIME SIGNIFICANCE ( AVIATION FORECAST) CODE TABLE FLIGHT LEVEL SIGNIFICANCE CODE TABLE DATA SIGNIFICANCE CODE TABLE EXTENDED VERTICAL SOUNDING SIGNIFICANCE FLAG TABLE NUMBER OF OBSERVATIONS NUMERIC QUALIFIER FOR NUMBER OF MISSING VALUES IN CALCULATION OF STATIST CODE TABLE QUALIFIER FOR NUMBER OF MISSING VALUES IN CALCULATION OF STATIST CODE TABLE CONDITION FOR WHICH NUMBER OF DAYS OF OCCURRENCE FOLLOWS CODE TABLE DAY OF OCCURRENCE QUALIFIER CODE TABLE QUALIFIER FOR WIND SPEED OR WIND GUST CODE TABLE SAMPLE SCANNING MODE SIGNIFICANCE CODE TABLE SUN-GLINT INDICATOR CODE TABLE ECMWF Technical Notes 9

12 BUFR Reference Manual SEMI-TRANSPARENCY INDICATOR CODE TABLE TOVS/ATOVS PRODUCT QUALIFIER CODE TABLE PIXEL(S) TYPE CODE TABLE ALTIMETER ECHO TYPE CODE TABLE ASCENDING/DESCENDING ORBIT QUALIFIER CODE TABLE TYPE OF BAND CODE TABLE AVIATION PRODUCT STATUS CODE TABLE QUALIFIER FOR GTSSPP QUALITY FLAG CODE TABLE TYPE OF EQUIPMENT CODE TABLE (CBS) ARTIFICIAL CORRECTION OF SENSOR HEIGHT TO ANOTHER VALUE CODE TABLE NOMINAL VALUE INDICATOR FLAG TABLE BEAM IDENTIFIER CODE TABLE HEIGHT OF LAND SURFACE M HEIGHT M GEOPOTENTIAL M**2/S** PRESSURE PA HEIGHT M GEOPOTENTIAL M**2/S** GEOPOTENTIAL HEIGHT GPM MINIMUM PRESSURE REDUCED TO MEAN SEA LEVEL PA MAXIMUM PRESSURE REDUCED TO MEAN SEA LEVEL PA IN DIRECTION OF THE NORTH POLE, DISTANCE FROM THE EARTH S CENTRE M SATELLITE DISTANCE TO EARTH S CENTRE M ALTITUDE (PLATFORM TO ELLIPSOID) M EARTH RADIUS M EARTH S LOCAL RADIUS OF CURVATURE M GEOID UNDULATION (SEE NOTE 4) M NUMBER OF RETRIEVED LAYERS NUMERIC STANDARD DEVIATION ALTITUDE M PRESSURE REDUCED TO MEAN SEA LEVEL PA ALTIMETER SETTING (QNH) PA PRESSURE CHANGE PA HOUR PRESSURE CHANGE PA HOUR PRESSURE CHANGE PA CHARACTERISTIC OF PRESSURE TENDENCY CODE TABLE INDICATED AIRCRAFT ALTITUDE M VIEWING ZENITH ANGLE DEGREE ALTITUDE OF COG ABOVE REFERENCE ELLIPSOID M INSTANTANEOUS ALTITUDE RATE MS SQUARED OFF NADIR ANGLE OF THE SATELLITE FROM PLATFORM DATA DEGREE SQUARED OFF NADIR ANGLE OF THE SATELLITE FROM WAVEFORM DATA DEGREE MEAN SEA SURFACE HEIGHT M GEOID S HEIGHT M OCEAN DEPTH/LAND ELEVATION M TOTAL GEOCENTRIC OCEAN TIDE HEIGHT SOLUTION 1 M TOTAL GEOCENTRIC OCEAN TIDE HEIGHT SOLUTION 2 M LONG PERIOD TIDE HEIGHT M TIDAL LOADING HEIGHT M SOLID EARTH TIDE HEIGHT M GEOCENTRIC POLE TIDE HEIGHT M HEIGHT OF ATMOSPHERE USED M WIND DIRECTION DEGREE TRUE WIND SPEED M/S U-COMPONENT M/S V-COMPONENT M/S W-COMPONENT PA/S W-COMPONENT M/S WIND DIRECTION ASSOCIATED WITH WIND SPEED WHICH FOLLOWS DEGREE TRUE WIND DIRECTION AT 10 M DEGREE TRUE WIND SPEED AT 10 M M/S WIND DIRECTION AT 5 M DEGREE TRUE WIND SPEED AT 5 M M/S EXTREME COUNTERCLOCKWISE WIND DIRECTION OF A VARIABLE WIND DEGREE TRUE EXTREME CLOCKWISE WIND DIRECTION OF A VARIABLE WIND DEGREE TRUE STEADINESS OF WIND (6) % RELATIVE VORTICITY 1/S DIVERGENCE 1/S VELOCITY POTENTIAL M**2/S EXTENDED DEGREE OF TURBULENCE CODE TABLE DEGREE OF TURBULENCE CODE TABLE HEIGHT OF BASE OF TURBULENCE M HEIGHT OF TOP OF TURBULENCE M VERTICAL GUST VELOCITY M/S VERTICAL GUST ACCELERATION M/S** MAXIMUM DERIVED EQUIVALENT VERTICAL GUST SPEED M/S TURBULENCE INDEX CODE TABLE TIME OF OCCURRENCE OF PEAK EDDY DISSIPATION RATE CODE TABLE EXTENDED TIME OF OCCURRENCE OF PEAK EDDY DISSIPATION RATE CODE TABLE MAXIMUM WIND SPEED (MEAN WIND) M/S MAXIMUM WIND GUST SPEED M/S MAXIMUM WIND SPEED (10-MIN MEAN WIND) M/S MAXIMUM WIND GUST DIRECTION DEGREE TRUE MEAN WIND DIRECTION FOR SURFACE M (5000 FEET) DEGREE TRUE MEAN WIND SPEED FOR SURFACE M (5000 FEET) M/S MAXIMUM INSTANTANEOUS WIND SPEED M/S MAXIMUM INSTANTANEOUS WIND SPEED OVER 10 MINUTES M/S STANDARD DEVIATION OF WIND DIRECTION DEGREE TRUE STANDARD DEVIATION OF HORIZONTAL WIND SPEED M/S STANDARD DEVIATION OF VERTICAL WIND SPEED M/S FORMAL UNCERTAINTY IN WIND SPEED M/S FORMAL UNCERTAINTY IN WIND DIRECTION DEGREE TRUE MEAN WIND DIRECTION FOR 1500 M M DEGREE TRUE MEAN WIND SPEED FOR 1500 M M M/S ECMWF Technical Notes

13 2.2 Bufr Table B ABSOLUTE WIND SHEAR IN 1 KM LAYER BELOW M/S ABSOLUTE WIND SHEAR IN 1 KM LAYER ABOVE M/S DESIGNATOR OF THE RUNWAY AFFECTED BY WIND SHEAR (INCLUDING ALL) CCITTIA TURBULENT VERTICAL MOMENTUM FLUX M**2/S** TURBULENT VERTICAL BUOYANCY FLUX KM/S TURBULENT KINETIC ENERGY M**2/S** DISSIPATION ENERGY M**2/S** MEAN TURBULENCE INTENSITY (EDDY DISSIPATION RATE) M**(2/3)/S PEAK TURBULENCE INTENSITY (EDDY DISSIPATION RATE) M**(2/3)/S REPORTING INTERVAL OR AVERAGING TIME FOR EDDY DISSIPATION RATE S MODEL WIND DIRECTION AT 10M DEGREE TRUE MODEL WIND SPEED AT 10M M/S WIND SPEED KM/HOUR WIND SPEED KNOT MAXIMUM WIND GUST SPEED KM/HOUR MAXIMUM WIND GUST SPEED KNOT U COMPONENT OF THE MODEL WIND VECTOR M/S V COMPONENT OF THE MODEL WIND VECTOR M/S U - COMPONENT AT 10 M M/S TEMPERATURE/DRY-BULB TEMPERATURE K WET-BULB TEMPERATURE K DEW-POINT TEMPERATURE K DRY-BULB TEMPERATURE AT 2 M K WET-BULB TEMPERATURE AT 2 M K DEW-POINT TEMPERATURE AT 2 M K VIRTUAL TEMPERATURE K MAXIMUM TEMPERATURE, AT HEIGHT AND OVER PERIOD SPECIFIED K MINIMUM TEMPERATURE, AT HEIGHT AND OVER PERIOD SPECIFIED K GROUND MINIMUM TEMPERATURE, PAST 12 HOURS K MAXIMUM TEMPERATURE AT 2 M, PAST 12 HOURS K MINIMUM TEMPERATURE AT 2 M, PAST 12 HOURS K MAXIMUM TEMPERATURE AT 2 M, PAST 24 HOURS K MINIMUM TEMPERATURE AT 2 M, PAST 24 HOURS K MAXIMUM TEMPERATURE AT 2M K MINIMUM TEMPERATURE AT 2M K TEMPERATURE C DEW POINT TEMPERATURE C SOIL TEMPERATURE K Temperature change over specified period K STANDARD DEVIATION TEMPERATURE K HIGHEST DAILY MEAN TEMPERATURE K LOWEST DAILY MEAN TEMPERATURE K SKIN TEMPERATURE K EQUIVALENT BLACK BODY TEMPERATURE K BRIGHTNESS TEMPERATURE K INSTRUMENT TEMPERATURE K STANDARD DEVIATION BRIGHTNESS TEMPERATURE K WARM LOAD TEMPERATURE K COLDEST CLUSTER TEMPERATURE K RADIANCE WM**(-2)SR**(-1) TEMPERATURE K SPECTRAL RADIANCE WM**(-3)SR**(-1) RADIANCE WM**(-2)SR**(-1) TEMPERATURE/DRY-BULB TEMPERATURE K WET-BULB TEMPERATURE K DEW-POINT TEMPERATURE K DRY-BULB TEMPERATURE AT 2M K WEB-BULB TEMPERATURE AT 2M K DEW-POINT TEMPERATURE AT 2M K VIRTUAL TEMPERATURE K MAXIMUM TEMPERATURE, AT HEIGHT AND OVER PERIOD SPECIFIED K MINIMUM TEMPERATURE, AT HEIGHT AND OVER PERIOD SPECIFIED K GROUND MINIMUM TEMPERATURE, PAST 12 HOURS K MAXIMUM TEMPERATURE AT 2M, PAST 12 HOURS K MINIMUM TEMPERATURE AT 2M, PAST 12 HOURS K MAXIMUM TEMPERATURE AT 2M, PAST 24 HOURS K MINIMUM TEMPERATURE AT 2M, PAST 24 HOURS K MAXIMUM TEMPERATURE AT HEIGHT SPECIFIED, PAST 24 HOURS K MINIMUM TEMPERATURE AT HEIGHT SPECIFIED, PAST 24 HOURS K GROUND MINIMUM TEMPERATURE K GROUND MINIMUM TEMPERATURE OF THE PRECEDING NIGHT K SOIL TEMPERATURE K STANDARD DEVIATION OF DAILY MEAN TEMPERATURE K HIGHEST DAILY MEAN TEMPERATURE K LOWEST DAILY MEAN TEMPERATURE K SKIN TEMPERATURE K EQUIVALENT BLACK BODY TEMPERATURE K BRIGHTNESS TEMPERATURE K INSTRUMENT TEMPERATURE K COLDEST CLUSTER TEMPERATURE K AVERAGED 12 MICRON BT FOR ALL CLEAR PIXELS AT NADIR K AVERAGED 11 MICRON BT FOR ALL CLEAR PIXELS AT NADIR K AVERAGED 3.7 MICRON BT FOR ALL CLEAR PIXELS AT NADIR K AVERAGED 12 MICRON BT FOR ALL CLEAR PIXELS, FORWARD VIEW K AVERAGED 11 MICRON BT FOR ALL CLEAR PIXELS, FORWARD VIEW K AVERAGED 3.7 MICRON BT FOR ALL CLEAR PIXELS, FORWARD VIEW K MEAN NADIR SEA SURFACE TEMPERATURE K MEAN DUAL VIEW SEA SURFACE TEMPERATURE K INTERPOLATED 23.8 GHZ BRIGHTNESS T FROM MWR K INTERPOLATED 36.5 GHZ BRIGHTNESS T FROM MWR K SPECIFIC HUMIDITY KG/KG MIXING RATIO KG/KG RELATIVE HUMIDITY % ECMWF Technical Notes 11

14 BUFR Reference Manual VAPOUR PRESSURE PA VAPOUR DENSITY KG/M** MIXING HEIGHTS M MINIMUM RELATIVE HUMIDITY % MAXIMUM RELATIVE HUMIDITY % RELATIVE HUMIDITY % TOTAL PRECIPITATION/TOTAL WATER EQUIVALENT KG/M** DEPTH OF FRESH SNOW M TOTAL SNOW DEPTH M RAINFALL/WATER EQUIVALENT OF SNOW (AVERAGED RATE) KG/(M**2)S SNOWFALL (AVERAGED RATE) M/S PRECIPITABLE WATER KG/M** TOTAL PRECIPITATION PAST 1 HOUR KG/M** TOTAL PRECIPITATION PAST 3 HOURS KG/M** TOTAL PRECIPITATION PAST 6 HOURS KG/M** TOTAL PRECIPITATION PAST 12 HOURS KG/M** TOTAL PRECIPITATION PAST 24 HOURS KG/M** EVAPOTRANSPIRATION KG/M** EVAPORATION/EVAPOTRANSPIRATION KG/M** EVAPORATION/EVAPOTRANSPIRATION KG/M** SUPERADIABATIC INDICATOR CODE TABLE TERRAIN TYPE (ICE/SNOW) CODE TABLE SURFACE FLAG CODE TABLE PASQUILL-GIFFORD STABILITY CATEGORY CODE TABLE PARCEL LIFTED INDEX (TO 500 HPA) K BEST LIFTED INDEX (TO 500 HPA) K K INDEX K KO INDEX K MAXIMUM BUOYANCY K MODIFIED SHOWALTER STABILITY INDEX K FREQUENCY GROUP, PRECIPITATION CODE TABLE HIGHEST DAILY AMOUNT OF PRECIPITATION KG/M** INTENSITY OF PRECIPITATION KG/(M**2)S CHARACTER AND INTENSITY OF PRECIPITATION CODE TABLE TIME OF BEGINNING OR END OF PRECIPITATION CODE TABLE SIZE OF PRECIPITATING ELEMENT M NUMBER OF FLASHES (THUNDERSTORM) NUMERIC TOTAL ACCUMULATED PRECIPITATION KG/M** UPSTREAM WATER LEVEL M DOWNSTREAM WATER LEVEL M MAXIMUM WATER LEVEL M WATER PH ph WATER CONDUCTIVITY S M WATER TEMPERATURE K DISSOLVED OXYGEN KG/M** TURBIDITY LUMEN OXYDATION REDUCTION POTENTIAL (ORP) V RADIOMETER WATER VAPOUR CONTENT KG/M** RADIOMETER LIQUID CONTENT KG/M** CLOUD OPTICAL THICKNESS NUMERIC TOTAL COLUMN WATER VAPOUR KG/M** MWR WATER VAPOUR CONTENT KG/M** MWR LIQUID WATER CONTENT KG/M** INTEGRATED WATER VAPOUR DENSITY KG/M** RELATIVE HUMIDITY AT 2 M % LONG-WAVE RADIATION, INTEGRATED OVER 24 HOURS J/M** LONG-WAVE RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** SHORT-WAVE RADIATION, INTEGRATED OVER 24 HOURS J/M** SHORT-WAVE RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** NET LONG-WAVE RADIATION, INTEGRATED OVER 24 HOURS J/M** NET LONG-WAVE RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** NET SHORT-WAVE RADIATION, INTEGRATED OVER 24 HOURS J/M** NET SHORT-WAVE RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** NET RADIATION, INTEGRATED OVER 24 HOURS J/M** NET RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** INSTANTANEOUS LONG-WAVE RADIATION (SEE NOTE 6) W/M** INSTANTANEOUS SHORT-WAVE RADIATION (SEE NOTE 6) W/M** SURFACE ALBEDO % GLOBAL SOLAR RADIATION, INTEGRATED OVER 24 HOURS J/M** GLOBAL SOLAR RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** DIFFUSE SOLAR RADIATION, INTEGRATED OVER 24 HOURS J/M** DIFFUSE SOLAR RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** DIRECT SOLAR RADIATION, INTEGRATED OVER 24 HOURS J/M** DIRECT SOLAR RADIATION, INTEGRATED OVER PERIOD SPECIFIED J/M** ALBEDO AT THE TOP OF CLOUDS % ALBEDO % GLOBAL SOLAR RADIATION (HIGH ACCURACY), INTEGRATED OVER PERIOD S J/M** DIFFUSE SOLAR RADIATION (HIGH ACCURACY), INTEGRATED OVER PERIOD J/M** DIRECT SOLAR RADIATION (HIGH ACCURACY), INTEGRATED OVER PERIOD S J/M** TOTAL SUNSHINE MINUTE TOTAL SUNSHINE HOUR TOTAL SUNSHINE % SUNSHINE OVER PERIOD SPECIFIED MINUTE BI-DIRECTIONAL REFLECTANCE % CHANNEL RADIANCE (W/M**2)*(1/SR)*CM SCALED IASI RADIANCE (W/M**2)*(1/SR)*(1/M) SCALED MEAN AVHRR RADIANCE (W/M**2)*(1/SR)*(1/M) SCALED STANDARD DEVIATION RADIANCE (W/M**2)*(1/SR)*(1/M) EMISSIVITY (SEE NOTE 5) % DIRECT SOLAR RADIATION INTEGRATED OVER LAST HOUR J/M** SOLAR ACTIVITY INDEX NUMERIC (VAL) INSTANTANEOUS LONG-WAVE RADIATION W/M** (VAL) INSTANTANEOUS SHORT-WAVE RADIATION W/M** ECMWF Technical Notes

15 2.2 Bufr Table B TOTAL OZONE DU AIR MASS (SLANT PATH AT 22 KM) NUMERIC MEASURED OZONE PARTIAL PRESSURE (SOUNDING) PA OZONE SOUNDING CORRECTION FACTOR NUMERIC OZONE P DU LOG 10 OF INTEGRATED ELECTRON DENSITY LOG (1/M2) MAXIMUM IMAGE SPECTRAL COMPONENT BEFORE NORMALIZATION NUMERIC INTEGRATED 03 DENSITY KG/M** TYPE OF POLLUTANT CODE TABLE CONCENTRATION OF POLLUTANT MOLMOL CONCENTRATION OF POLLUTANT KG/M AEROSOL CONTAMINATION INDEX NUMERIC ATMOSPHERIC PATH DELAY IN SATELLITE SIGNAL M ESTIMATED ERROR IN ATMOSPHERIC PATH DELAY M DIFFERENCE IN PATH DELAYS FOR LIMB VIEWS AT EXTREMES OF SCAN M ESTIMATED ERROR IN PATH DELAY DIFFERENCE M COMPONENT OF ZENITH PATH DELAY DUE TO WATER VAPOUR M ATMOSPHERIC REFRACTIVITY (SEE NOTE 5) N-UNITS BENDING ANGLE RADIANS TYPE OF SYNOPTIC FEATURE CODE TABLE EFFECTIVE RADIUS OF FEATURE M WIND SPEED THRESHOLD M/S EFFECTIVE RADIUS WITH RESPECT TO WIND SPEEDS ABOVE THRESHOLD M DIRECTION OF MOTION OF FEATURE DEGREE TRUE SPEED OF MOTION OF FEATURE M/S EFFECTIVE RADIUS OF FEATURE M VERTICAL EXTENT OF CIRCULATION CODE TABLE EFFECTIVE RADIUS WITH RESPECT TO WIND SPEEDS ABOVE THRESHOLD (LA M METHOD FOR TRACKING THE CENTRE OF SYNOPTIC FEATURE CODE TABLE TIME INTERVAL TO CALCULATE THE MOVEMENT OF THE TROPICAL CYCLONE CODE TABLE ACCURACY OF THE POSITION OF THE CENTRE OF THE TROPICAL CYCLONE CODE TABLE SHAPE AND DEFINITION OF THE EYE OF THE TROPICAL CYCLONE CODE TABLE DIAMETER OF MAJOR AXIS OF THE EYE OF THE TROPICAL CYCLONE CODE TABLE CHANGE IN CHARACTER OF THE EYE DURING THE 30 MINUTES CODE TABLE DISTANCE BETWEEN THE END OF SPIRAL BAND AND THE CENTRE CODE TABLE IDENTIFICATION NUMBER OF TROPICAL CYCLONE NUMERIC TIME INTERVAL OF THE TROPICAL CYCLONE ANALYSIS CODE TABLE ACCURACY OF GEOGRAPHICAL POSITION OF THE TROPICAL CYCLONE CODE TABLE MEAN DIAMETER OF THE OVERCAST CLOUD OF THE TROPICAL CYCLONE CODE TABLE APPARENT 24-HOUR CHANGE IN INTENSITY OF TROPICAL CYCLONE CODE TABLE CURRENT INTENSITY (CI) NUMBER OF THE TROPICAL CYCLONE NUMERIC DATA TROPICAL (DT) NUMBER OF THE TROPICAL CYCLONE NUMERIC CLOUD PATTERN TYPE OF THE DT- NUMBER CODE TABLE MODEL EXPECTED TROPICAL (MET) NUMBER OF THE TROPICAL CYCLONE NUMERIC TREND OF PAST 24-HOUR CHANGE (+: DEVELOPED, -: WEAKENED) NUMERIC PATTERN TROPICAL (PT) NUMBER OF THE TROPICAL CYCLONE NUMERIC CLOUD PICTURE TYPE OF THE PT- NUMBER CODE TABLE FINAL TROPICAL (T) NUMBER OF THE TROPICAL CYCLONE NUMERIC TYPE OF THE FINAL T-NUMBER CODE TABLE TYPHOON INTERNATIONAL COMMON NUMBER (TYPHOON COMMITTEE) CCITTIA HORIZONTAL VISIBILITY M VERTICAL VISIBILITY M PRESENT WEATHER (SEE NOTE 1) CODE TABLE PAST WEATHER (1) (SEE NOTE 2) CODE TABLE PAST WEATHER (2) (SEE NOTE 2) CODE TABLE CLOUD DISTRIBUTION FOR AVIATION CODE TABLE GENERAL WEATHER INDICATOR (TAF/METAR) CODE TABLE CLOUD COVER (TOTAL) % CLOUD AMOUNT CODE TABLE CLOUD TYPE CODE TABLE HEIGHT OF BASE OF CLOUD M HEIGHT OF TOP OF CLOUD M PRESSURE AT BASE OF CLOUD PA PRESSURE AT TOP OF CLOUD PA CLOUD TOP DESCRIPTION CODE TABLE TENDENCY OF RUNWAY VISUAL RANGE CODE TABLE SIGNIFICANT PRESENT OR FORECAST WEATHER CCITTIA SIGNIFICANT RECENT WEATHER PHENOMENA CCITTIA TYPE OF PRECIPITATION FLAG TABLE CHARACTER OF PRECIPITATION CODE TABLE OTHER WEATHER PHENOMENA FLAG TABLE INTENSITY OF PHENOMENA CODE TABLE OBSCURATION FLAG TABLE CHARACTER OF OBSCURATION CODE TABLE PHENOMENA OCCURRENCE FLAG TABLE RAIN FLAG CODE TABLE ICE DEPOSIT (THICKNESS) M RATE OF ICE ACCRETION CODE TABLE CAUSE OF ICE ACCRETION FLAG TABLE SEA ICE CONCENTRATION CODE TABLE AMOUNT AND TYPE OF ICE CODE TABLE ICE SITUATION CODE TABLE ICE DEVELOPMENT CODE TABLE BEARING OF ICE EDGE (SEE NOTE 3) DEGREE TRUE ICE DISTANCE M EVOLUTION OF DRIFT OF SNOW CODE TABLE AIRFRAME ICING CODE TABLE AIRFRAME ICING PRESENT CODE TABLE PEAK LIQUID WATER CONTENT KG/M** AVERAGE LIQUID WATER CONTENT KG/M** SUPERCOOLED LARGE DROPLET (SLD) CONDITIONS CODE TABLE CLOUD INDEX CODE TABLE AMOUNT OF LOW CLOUDS % ECMWF Technical Notes 13

16 BUFR Reference Manual AMOUNT OF MIDDLE CLOUDS % AMOUNT OF HIGH CLOUDS % TRUE DIRECTION FROM WHICH CLOUDS ARE MOVING DEGREE TRUE STATE OF SKY IN TROPICS CODE TABLE CLOUD PHASE CODE TABLE MINIMUM HORIZONTAL VISIBILITY M PREVAILING HORIZONTAL VISIBILITY M RUNWAY VISUAL RANGE (RVR) M STATE OF THE GROUND (WITH OR WITHOUT SNOW) CODE TABLE SPECIAL PHENOMENA CODE TABLE SNOW COVER (SEE NOTE 4) % MAXIMUM DIAMETER OF HAILSTONES M DIAMETER OF DEPOSIT M MINIMUM NUMBER OF ATMOSPHERICS NUMERIC ACCURACY OF FIX AND RATE OF ATMOSPHERICS CODE TABLE CLOUD AMOUNT IN SEGMENT % AMOUNT SEGMENT CLOUD FREE % AMOUNT OF SEGMENT COVERED BY SCENE % GENERAL CONDITION OF RUNWAY CODE TABLE RANWAY DEPOSITS CODE TABLE RUNWAY CONTAMINATION CODE TABLE DEPTH OF RANWAY DEPOSITS M RUNWAY FRICTION COEFICIENT CODE TABLE SPECIAL CLOUDS CODE TABLE VERTICAL VISIBILITY FEET HEIGHT OF BASE OF CLOUD FEET ICE PROBABILITY NUMERIC ICE AGE ("A" PARAMETER) db LOCUST (ACRIDIAN) NAME CODE TABLE LOCUST (MATURITY) COLOR CODE TABLE STAGE OF DEVELOPMENT OF LOCUSTS CODE TABLE ORGANIZATION STATE OF SWARM OR BAND OF LOCUSTS CODE TABLE SIZE OF SWARM OR BAND OF LOCUSTS AND DURATION OF PASSAGE OF SWARMCODE TABLE LOCUST POPULATION DENSITY CODE TABLE DIRECTION OF MOVEMENTS OF LOCUST SWARM CODE TABLE EXTENT OF VEGETATION CODE TABLE SPECIAL PHENOMENA CODE TABLE HORIZONTAL REFLECTIVITY db VERTICAL REFLECTIVITY db DIFFERENTIAL REFLECTIVITY db LINEAR DEPOLARISATION RATIO db CIRCULAR DEPOLARISATION RATIO db DOPPLER MEAN VELOCITY IN X-DIRECTION M/S DOPPLER MEAN VELOCITY IN Y-DIRECTION M/S DOPPLER MEAN VELOCITY IN Z-DIRECTION M/S DOPPLER MEAN VELOCITY (RADIAL) M/S DOPPLER VELOCITY SPECTRAL WIDTH M/S ECHO TOPS M SIGNAL TO NOISE RATIO db VERTICALLY INTEGRATED LIQUID-WATER CONTENT KG/M** RADAR RAINFALL INTENSITY M/S BRIGHT-BAND HEIGHT M SIGNAL POWER ABOVE 1 MW db BACKSCATTER db RADIOMETRIC RESOLUTION (NOISE VALUE) % CLUTTER NOISE ESTIMATE NUMERIC MISSING PACKET COUNTER NUMERIC WAVE SCATTEROMETER PRODUCT CONFIDENCE DATA FLAG TABLE WIND PRODUCT CONFIDENCE DATA FLAG TABLE RADAR ALTIMETER PRODUCT CONFIDENCE DATA FLAG TABLE SST PRODUCT CONFIDENCE DATA FLAG TABLE SST PRODUCT CONFIDENCE DATA (SADIST-2) FLAG TABLE PEAKINESS NUMERIC SATELLITE ALTIMETER CALIBRATION STATUS FLAG TABLE SATELLLITE ALTIMETER INSTRUMENT MODE FLAG TABLE IMAGE SPECTRUM INTENSITY NUMERIC REPRESENTATION OF INTENSITIES CODE TABLE ALTITUDE CORRECTION (IONOSPHERE) M ALTITUDE CORRECTION (DRY TROPOSPHERE) M ALTITUDE CORRECTION (WET TROPOSPHERE) M ALTITUDE CORRECTION (CALIBRATION CONSTANT) M OPEN LOOP CORRECTION (HEIGHT-TIME LOOP) M OPEN LOOP CORRECTION (AUTO GAIN CONTROL) db WARM TARGET CALIBRATION NUMERIC COLD TARGET CALIBRATION NUMERIC ATSR SEA SURFACE TEMPERATURE ACROSS- TRACK BAND NUMBER NUMERIC NUMBER OF PIXELS IN NADIR ONLY, AVERAGE NUMERIC NUMBER OF PIXELS IN DUAL VIEW, AVERAGE NUMERIC WET BACKSCATTER db RADAR SIGNAL DOPPLER SPECTRUM 0TH MOMENT db RASS SIGNAL DOPPLER SPECTRUM 0TH MOMENT, REFERRING TO RASS SIGNA db Ku BAND PEAKINESS NUMERIC S BAND PEAKINESS NUMERIC NUMBER OF VECTOR AMBIGUITIES NUMERIC INDEX OF SELECTED WIND VECTOR NUMERIC TOTAL NUMBER OF SIGMA-0 MEASUREMENTS NUMERIC LIKELIHOOD COMPUTED FOR SOLUTION NUMERIC NORMALIZED RADAR CROSS-SECTION db KP VARIANCE COEFFICIENT (ALPHA) NUMERIC KP VARIANCE COEFFICIENT (BETA) NUMERIC SEAWINDS WIND VECTOR CELL QUALITY FLAG TABLE NUMBER OF INNER-BEAM SIGMA-0 (FORWARD OF SATELLITE) NUMERIC NUMBER OF OUTER-BEAM SIGMA-0 (FORWARD OF SATELLITE) NUMERIC ECMWF Technical Notes