Meteorological Research Flight: FIRE CENTRAL ARCHIVE CATALOG INFORMATION. DATA BASE INFORMATION --------------------- data set name: FIRE-ASTEX data type: AIRCRAFT Data Volume: 16 FLIGHTS AT 700 MB PER FLIGHT (BINARY FORMAT) Ancillary data set: NO DETAILED CATALOG INFORMATION ---------------------------- 1. TYPE OF DATA (INCLUDING SECTIONS 1.1 TO 1.4) Param Freq Name Units Name (NCDS where appl.) NCDS Instrument/ Comments Hz _______________________________________________________________________________ 515 1 SECS SECS S FROM MIDNIGHT SECONDS FROM 00Z 516 32 IAS M/S IND. AIR SPEED IND = indicated 517 32 TAS M/S TRUE AIR SPEED 520 32 TTDI DEG K TEMP DEICED rosem-tmp 523 4 TTND DEG K TEMP NONDEICED rosem-tmp 529 4 DEWP DEG K DEW POINT General eastern Hygrometer 537 4 PRT4 DEG K SURFACE TEMP PRT-4 uncorrected 545 4 MHDG DEGREES HEADING MAG COMPASS 548 32 AOA DEGREES ANGLE OF ATTACK Navigation 549 32 AOSS DEGREES ANG OF SIDESLIP Navigation 550 1 OLAT DEGREES OMEGA LATITUDE Navigation 551 1 OLNG DEGREES OMEGA LONGITUDE Navigation 557 32 VZ M/S INS VERT VEL INS aircraft velocities 558 32 VN M/S INS VEL NORTH " " " " 559 32 VE M/S INS VEL EAST " " " " 560 32 ROLL DEGREES INS ROLL " 561 32 PTCH DEGREES INS PITCH " 562 32 IHDG DEGREES INS HEADING " 563 32 IGS M/S INS GROUND SPD " 564 32 IDA DEGREES INS DRIFT ANG " 565 32 PITR DEG/S INS PITCH RATE " 566 32 YAWR DEG/S INS YAW RATE " 572 64 TWC G/KG TOTAL WTR CONT Total water probe lyman-a 573 8 FLDP DEG K FWVS DEW POINT lyman - alpha hygrometer 575 2 RHGT METRES RADAR HEIGHT radar altimeter 576 32 SPR MB STATIC PRESS rosem-pres 577 32 PSP MB PITOT-STAT PRES rosem-pres 578 32 PHGT METRES PRESSURE HEIGHT 580 1 GLAT DEGREES GPS LATITUDE GPS = Global Positioning 581 1 GLNG DEGREES GPS LONGITUDE System 582 1 GALT METRES GPS ALTITUDE navigation 583 1 GVN M/S GPS VEL NORTH " aircraft vel 584 1 GVE M/S GPS VEL EAST " aircraft vel 585 1 GVZ M/S GPS VEL UP " aircraft vel 642 1 SAZI DEGREES SOLAR AZIMUTH 643 1 SZEN DEGREES SOLAR ZEN ANG 644 2 EVM RNUM EVENT MARK 658 32 CICT DEG K ICTP TRUE TEMP In cloud temp probe 714 32 U M/S NORTHWARD WIND Calculated wind speed 715 32 V M/S EASTWARD WIND " 716 32 W M/S VERTICAL WIND " 723 4 ST DEG K CORR SURF TEMP Barnes PRT-4 radiometer 724 4 CLWC G/KG CORR LIQ WATER JW-hotwire probe 725 64 TWDP DEG K TOT WTR DEW PT Total water probe lyman-a 730 32 CLAT DEGREES CORR LATITUDE INS Navigation 731 32 CLNG DEGREES CORR LONGITUDE " 735 32 CVN M/S CORR NORTH VEL aircraft velocity 736 32 CVE M/S CORR EAST VEL " 907 1 C-TC /LITRE 2D-C TOTAL CONC PMS-probe 908 1 CMAX MICRON 2D-C MAX DIAM " 909 1 CCON /LITRE 2D-C CONC " (without chan 1) 910 1 CIWC G/M**3 2D-C IWC " 911 1 CDAV MICRON 2D-C MEAN DIAM " 912 1 CLWC G/M**3 2D-C LWC " 1019 1 CUCF W/M**2 DWNWEL CLR FLUX pyranometer (0.3-3.0µm) 1020 1 CURF W/M**2 DWNWEL RED FLUX pyranometer (0.7-3.0µm) 1021 1 CUIF W/M**2 DWNWEL I/R FLUX pyrgeometer (4-50µm) 1022 1 CLCF W/M**2 UPWELL CLR FLUX pyranometer (0.3-3.0µm) 1023 1 CLRF W/M**2 UPWELL RED FLUX pyranometer (0.7-3.0µm) 1024 1 CLIR W/M**2 UPWELL I/R FLUX pyrgeometer (4-50µm) 2. SPATIAL CHARACTERISTICS. Spatial coverage: 28° - 41°N, 15° - 28°W, Levels from 20 - 9000m Spatial resolution: Variable from 1m to 100m 3. TEMPORAL CHARACTERISTICS. 3.1 Temporal Coverage FLIGHT NUMBER DATE TIMES (UTC) --------------------------------------------- A202 05/30/92 1530-2013 A203 06/01/92 1056-1900 A204 06/02/92 1830-0247 A205 06/04/92 0927-1855 A206 06/05/92 1128-1733 A207 06/09/92 0745-1558 A208 06/10/92 0821-1721 A209 06/12/92 2304-0555 A210 06/14/92 0900-1757 A211 06/15/92 1106-1845 A212 06/16/92 1055-2030 A213 06/19/92 0431-1257 A214 06/20/92 0519-1425 A215 06/22/92 1035-1945 A216 06/23/92 1101-1903 A217 06/24/92 1037-1340 3.2 See table in section 1. - variable from 1Hz to 64Hz 4. INSTRUMENT DESCRIPTION. INERTIAL NAVIGATION SYSTEM: Ferranti FIN 1012. Measures aircraft acceleration in three orthogonal planes. Used to derive parameters 557 - 566. Processing is carried out (see section 5) to dervive parameters 714,715,716,730,731,735 and 736. GLOBAL POSITION SYSTEM: Navstar XR3. Uses satellites to define aircraft position in space. Used to derive parameters 580 - 585. Used in processing of INS data (see section 5) OMEGA NAVIGATION SYSTEM: Litton LTN-211. Measures aircraft position. Used to derive parameters 550 and 551. POTENTIOMETRIC WIND VANES: Penny & Giles E23001. Gust vanes for measurement of turbulence. Used to derive parameters 548 and 549 RADAR ALTIMETER: Honeywell YG9000D1. Measures aircraft altitude. Parameter 575. ROSEMOUNT PRESSURE SENSORS: Variable Capacitance Rosemount 1201F - Static pressure, parameter 576. Used to derive parameter 578. (Pressure height on 1013.25mb). Variable Capacitance Rosemount 1221F - Pitot-static pressure, parameter 577. PLATINUM RESISTANCE THERMOMETERS: Rosemount 102BL - deiced air temperature. Parameter 520. Rosemount 102AL - nondeiced air temperature. Parameter 523. ABSORPTION BAND THERMOMETER (ICTP): UK Met Office developed. 4.3µm CO2 radiation thermometer. Used to derive parameter 658. THERMOELECTRIC HYGROMETER: General Eastern 1011B. Automatic chilled mirror dew point hygrometer. Used to derive parameter 529. LYMAN-ALPHA ABSORPTION AND FLUORESCENCE HYGROMETER: UK Met Office developed. Used to derive parameter 573. LYMAN-ALPHA ABSORPTION HYGROMETER: UK Met Office developed. Used to derive parameters 572 and 725. BOLOMETRIC THERMOMETER: Barnes PRT4 (modified by MRF). 8 µm to 14 µm wavelength. Measures radiometric surface temperature, parameter 537 and calibrated to give parameter 723. PYRGEOMETERS: Eppley, modified by MRF. Silicon dome. 4 µm - 50 µm. Measures broadband infrared irradiance. Used to derive parameters 1021 and 1024. PYRANOMETERS: Eppley PSP. 2 x WG7 clear dome - measure broadband irradiance, 0.3 - 3.0 µm, one upwelling and one downwelling. Used to derive parameters 1019 and 1022. Eppley PSP. 2 x WG715 red dome - measure broadband irradiance, 0.7 - 3.0 µm, one upwelling and one downwelling. Used to derive parameters 1020 and 1023. JOHNSON-WILLIAMS HOT WIRE LWH. Measures liquid water content of drops impacting a heated wire. Used to derive parameter 724. 2D-CLOUD PROBE: Particle Measuring Systems Inc. Laser-illuminated diode array, creates images of particles in the range 25 - 800 µm diameter, Used to derive parameters 907 - 912. 5. PROCESSING SEQUENCE. Parameter 517: True airspeed calculated from indicated airspeed corrected for changes in air density. Parameter 572: Lyman - alpha signal calibrated and corrected for drift interactively post flight using General Eastern hygrometer. Parameter 578: Pressure height calculated from static pressure based on surface pressure of 1013.25 hPa. Parameters 642 and 643: Solar zenith angle and azimuth calculated from Omega measured latitude and longitude and the equation of time. Parameters 714-716: Wind components from INS. Long term drift of INS corrected postflight interactively using GPS . Schuler oscillations also removed in this way. Parameters 723: Corrected surface temperature calculated from PRT-4 radiometer calibrated by internal hot target. Not available for flights A213 to A217. Uncorrected surface temperature in paramater 537. Parameter 724: Johnson Williams Liquid Water probe corrected post flight interactively by resetting to zero when out of cloud using PMS FSSP as cloud indicator. Parameters 1019 and 1020: Corrected for aircraft pitch and roll and cosine effect of domes. Parameter 1021: Corrected for non-uniformity of dome response. Parameters 907-912: Images analysed to produce size spectra and bulk parameters calculated from these. Parameter 909 is calculated without using the first channel of the size spectrum. Parameter 910 is calculated assuming that the particles are unrimed aggregates of bullets, columns and side-planes (Locatelli and Hobbs, 1974 JGR). Parameter 912 is calculated assuming the particles are water spheres. 6. QUALTIY ASSESSMENT. Para|Name | RANGE |ACCURACY |RESOLUTION |COMMENTS | | | | | ____|_______________|_____________|_________|___________|_____________________ 515 |S FROM MIDNIGHT| | | |from day of flt start 516 |IND. AIR SPEED |0 - 140 m/s | | | 517 |TRUE AIR SPEED |0 - 215 m/s | | | 520 |TEMP DEICED |-80 to +40°C | ±0.3°C | 0.06°C | 523 |TEMP NONDEICED |-80 to +40°C | ±0.5°C | 0.1°C | 529 |DEW POINT |-60 to +50°C |±0.25°C | 0.1°C |accuracy reduces to | | |@ Td >0°C| |±1°C at Td = -60°C 537 |SURFACE TEMP |-20 to +30°C | ±0.6°C | 0.1°C | 545 |HEADING | 0 to 360° | | | 548 |ANGLE OF ATTACK| ±10° | ±0.5° | 0.005° | 549 |ANG OF SIDESLIP| ±10° | ±0.5° | 0.005° | 550 |OMEGA LATITUDE | 0° to 90°N/S|<2km day | 0.000086° | | | |<4km nght| | 551 |OMEGA LONGITUDE|0° to 180°E/W|<2km day | 0.000086° | | | |<4km nght| | 557 |INS VERT VEL | ±30.5 m/s | ±0.1m/s | 0.046m/s | 558 |INS VEL NORTH | ±250 m/s | ±0.4m/s | 0.046m/s | 559 |INS VEL EAST | ±250 m/s | ±0.4m/s | 0.046m/s | 560 |INS ROLL | ±60° | ±0.09° | 0.022° | 561 |INS PITCH | ±60° | ±0.09° | 0.022° | 562 |INS HEADING | 0° to 360° | ±0.4° | 0.022° | 563 |INS GROUND SPD | 0 to 250m/s | ±0.4m/s | 0.046m/s | 564 |INS DRIFT ANG | ±45° | | | 565 |INS PITCH RATE | ±20 deg/s | | | 566 |INS YAW RATE | ±10 deg/s | | | 572 |TOTAL WTR CONT | 0 to 20g/kg |±0.15g/kg| 0.005g/kg| 573 |FWVS DEW POINT |-80 to +30°C | ±1°C | 0.5°C | 575 |RADAR HEIGHT |0 to 1525m |greater | 0.4m | | | |of ±3% or| | | | |±1.5m | | 576 |STATIC PRESS |1050 - 100mb |<±3mb | 0.25mb | 577 |PITOT-STAT PRES|0 to 125 mb | ±0.5mb | 0.03mb | 578 |PRESSURE HEIGHT|-206m to 11km| | | 580 |GPS LATITUDE | 0° to 90°N/S| ±50m | 0.1m | 581 |GPS LONGITUDE |0° to 180°E/W| ±50m | 0.1m | 582 |GPS ALTITUDE |0 to > 15km | ±50m | 0.01m | 583 |GPS VEL NORTH | unlimited | ±1.6m/s | 0.1m/s | 584 |GPS VEL EAST | unlimited | ±1.6m/s | 0.1m/s | 585 |GPS VEL UP | unlimited | ±2.6m/s | 0.01m/s | 642 |SOLAR AZIMUTH |0 to 360° | | | 643 |SOLAR ZEN ANG |0 to 180° | | | 644 |EVENT MARK | unlimited | | | 658 |ICTP TRUE TEMP |-50 to + 30°C|±0.1°C at| 0.025°C | | | |30°C and | | | | |±1°C at | | | | |-50°C | | 714 |NORTHWARD WIND | 0 to 150m/s | ±0.5m/s | 0.06m/s | 715 |EASTWARD WIND | 0 to 150m/s | ±0.5m/s | 0.06m/s | 716 |VERTICAL WIND |-20 to +20m/s| ±0.1m/s | 0.03m/s | 723 |CORR SURF TEMP |-20 to +30°C | ±0.6°C | 0.1°C | 724 |CORR LIQ WATER |0 to 3 g/m**3| ±10% |0.001g/m**3| Collection efficency | | | | | decreases above 30µm 725 |TOT WTR DEW PT | | | | 730 |CORR LATITUDE | | | | 731 |CORR LONGITUDE | | | | 735 |CORR NORTH VEL | | | | 736 |CORR EAST VEL | | | | 907 |2D-C TOTAL CONC| | | 1/litre | 908 |2D-C MAX DIAM |25 to 800µm | | 25µm | 909 |2D-C CONC | | | | 910 |2D-C IWC | | | | 911 |2D-C MEAN DIAM |25 to 800µm | | 25µm | 912 |2D-C LWC | | | | 1019|DWNWEL CLR FLUX|0 - 1400W/m2 | ±3% | 0.35W/m2 | 1020|DWNWEL RED FLUX|0 - 700 W/m2 | ±3% | 0.18W/m2 | 1021|DWNWEL I/R FLUX|0 - 500 W/m2 | ±3% | 0.24W/m2 | 1022|UPWELL CLR FLUX|0 - 1400W/m2 | ±3% | 0.35W/m2 | 1023|UPWELL RED FLUX|0 - 700 W/m2 | ±3% | 0.18W/m2 | 1024|UPWELL I/R FLUX|0 - 500 W/m2 | ±3% | 0.24W/m2 | Sensor: Multi-Channel Radiometer (MCR) Principles of operation: To measure radiance over a narrow spectral interval. Filter half widths vary from 0.02 to 1.0 um Parameter | Descriptor | Unit |frequency No. | | | (Hz) ________________________________________________________________|_____________ 825 | A1 Radiance (11um) | mW.m-2.st-1(cm-1)-1| 1 826 | A2 " (12um) | " " | 1 827 | A3 " (13.95um) | " " | 1 828 | A4 BLANK | NIL | 1 829 | C1 Radiance (12um) | mW.m-2.st-1(cm-1)-1| 1 830 | C2 " (11um) | " " | 1 831 | C3 " (13.35um) | " " | 1 832 | C4 BLANK | NIL | 1 833 | A1 Brightness Temp. (11um) | K | 1 834 | A2 " " (12um) | K | 1 835 | A3 " " (13.95um)| K | 1 837 | C1 " " (12um) | K | 1 838 | C2 " " (11um) | K | 1 839 | C3 " " (13.35um)| K | 1 841 | B1 Radiance (0.55um) | W.m-2.st-1.um-1 | 1 842 | B2 " (2.26um) | " " | 1 843 | B3 " (1.04um) | " " | 1 844 | B4 " (1.55um) | " " | 1 845 | D1 " (1.25um) | " " | 1 846 | D2 " (2.01um) | " " | 1 847 | D3 " (1.55um) | " " | 1 848 | D4 " (1.85um) | " " | 1 857 | Shutter Status | NIL | 1 858 | Scan Mirror View | NIL | 1 Accuracy of Longwave channels A1 - A3 and C1 - C3: Calibration carried out using two internal targets, one heated the other at ambient temperature and space views at high level in clear air. Nadir view Brightness temperature ± 0.3K Zenith view radiances (longwave) ± 3 mW.m-2.st-1.(cm-1)-1 Accuracy of shortwave channels B1 - B4 and D1 - D4 (par 841 - 848): Calibration carried out by viewing sun through a diffuser plate at high level in clear air and with a ground based lamp source. Parameter | Descriptor | Accuracy % No. | | ______________________________________________________________ 841 | B1 Radiance (0.55um) | 8.4 842 | B2 " (2.26um) | 13.1 843 | B3 " (1.04um) | 8.3 844 | B4 " (1.55um) | 6.9 845 | D1 " (1.25um) | 6.6 846 | D2 " (2.01um) | 6.8 847 | D3 " (1.55um) | 5.6 848 | D4 " (1.85um) | 10.7 Decode for parameter 857 (Shutter Status) 0 = Both Closed 1 = Upper shutter open 2 = Lower shutter open 3 = Both shutters open Decode for parameter 858 (Scan Mirror View) 0 = Hot black body 1 = Zenith 2 = Cold black body 3 = 60° off Nadir to port 4 = 45° off Nadir to port 5 = 30° off Nadir to port 6 = 15° off Nadir to port 7 = Nadir. 7. CONTACT ADDRESS. Name: D.W. Johnson Address: Meteorological Research Flight Y46 Building, DRA Farnborough, Hampshire. GU14 6TD ENGLAND. Telephone: +44 252 395734 Fax: +44 252 375688 Internet: dwjohnson@email.meto.govt.uk 8. OUTPUT PRODUCTS AND AVAILABILITY. 8.1 Tape products. Medium Spec: 8mm EXABYTE Format: MRF standard flight format. (details already supplied) Quantity: Each tape contains several flights. Status: Available. Planned schedule: Additional data will be integrated periodically as they are obtained. 8.2 Film products. NIL 8.3 Other products NIL Meteorological Research Flight: FIRE CENTRAL ARCHIVE CATALOG INFORMATION. DATA BASE INFORMATION --------------------- data set name: FIRE-ASTEX-PMS data type: AIRCRAFT Data Volume: 16 FLIGHTS AT 2 MB PER FLIGHT (ASCII FORMAT) Ancillary data set: YES Correlative dataset: FIRE-ASTEX DETAILED CATALOG INFORMATION ---------------------------- 1. TYPE OF DATA 1.1 Parameter names TIME_GMT F_RANGE DROPLET_SPEC MEAN_RADIUS MEAN_AREAL_RAD MEAN_VOL_RAD EFFECTIVE_RAD LIQUID_WATER AEROSOLS - AEROSOL_SPEC 1.2 Measurement units TIME_GMT hhmmss F_RANGE Range number (0 to 3) DROPLET_SPEC number/cm**3 MEAN_RADIUS microns MEAN_AREAL_RAD microns MEAN_VOL_RAD microns EFFECTIVE_RAD microns LIQUID_WATER g/m**3 AEROSOLS - AEROSOL_SPEC number/cm**3 1.3 Data source AIRCRAFT 1.4 Sensors TIME_GMT F_RANGE PMS_PROBE FSSP DROPLET_SPEC PMS_PROBE FSSP MEAN_RADIUS PMS_PROBE FSSP MEAN_AREAL_RAD PMS_PROBE FSSP MEAN_VOL_RAD PMS_PROBE FSSP EFFECTIVE_RAD PMS_PROBE FSSP LIQUID_WATER PMS_PROBE FSSP AEROSOLS - AEROSOL_SPEC PMS_PROBE PCASP 2. SPATIAL CHARACTERISTICS. Spatial coverage: 28° - 41°N, 15° - 28°W, Levels from 20 - 9000m Spatial resolution: 100m 3. TEMPORAL CHARACTERISTICS. 3.1 Temporal Coverage FLIGHT NUMBER DATE TIMES (UTC) --------------------------------------------- A202 05/30/92 151300-201300 A203 06/01/92 105557-185655 A204 06/02/92 182955-024725 A205 06/04/92 092725-185535 A206 06/06/92 112758-173342 A207 06/09/92 074525-155425 A208 06/10/92 082115-172130 A209 06/12/92 230323-055820 A210 06/14/92 090127-175700 A211 06/15/92 110621-184651 A212 06/16/92 105523-202740 A213 06/19/92 043144-125717 A214 06/20/92 051934-142550 A215 06/22/92 103410-194637 A216 06/23/92 110106-190145 3.2 Temporal resolution 1_second 4. INSTRUMENT DESCRIPTION. Forward Scattering Spectrometer Probe (FSSP): Particle Measuring Systems Inc. Light from a Helium-Neon laser is scattered forward by droplets passing through the beam. Droplet size is calculated from the measured light intensity using Mie theory and droplets are counted and sorted into 15 size channels. Four ranges are available: Range 0 2.0 - 47.0 µm Range 1 2.0 - 32.0 µm Range 2 1.0 - 16.0 µm Range 3 0.5 - 8.0 µm The range is set manually. The droplet size spectra can then be used to derive various bulk quantities. Passive Cavity Aerosol Spectrometer Probe (PCASP): Particle Measuring Systems Inc. Air is collected and decelerated into a collection chamber. A constant volume pump allows a small volume (about 1 cm/s) of air to enter the sampling chamber and the number and sizes of particles within it are determined by scattering of laser light. Particles are counted and sorted into 15 size channels in the size range 0.1 - 3.0 µm. The probe is operated in de-iced mode. 5. PROCESSING SEQUENCE. The FSSP and PCASP data is recorded at 16 Hz but is processed as 1 second averages. F_RANGE is recorded from the FSSP for each one second record. It is used to point to the size channel definitions that apply to the FSSP spectrum in that record. DROPLET_SPEC is an array of 15 FSSP channel concentrations. The original spectrum of channel counts recorded by the probe in the specified time interval (i.e. one second) is converted to a channel concentration by dividing by the volume of air sampled during that interval. This is a product of the effective sampling area, the particle velocity and the sample time. Standard FSSP correction techniques are applied: (a) The beam width correction - to correct for droplets passing through the edges of the beam. (b) The activity correction - to correct for droplets not counted while the probe's electronics process the previous droplet The particle velocity is taken as the true air speed of the aircraft. MEAN_RADIUS } MEAN_AREAL_RAD } These are calculated from the size spectra using the MEAN_VOL_RAD } concentration and middle radius in each channel EFFECTIVE_RAD } LIQUID_WATER } AEROSOL_SPEC is an array of 15 PCASP channel concentrations. The original spectrum of channel counts recorded by the probe in the specified time interval (i.e. one second) is converted to a channel concentration by dividing by the volume of air sampled during that interval. The sample volume is corrected for changes in air pressure and true air speed of the aircraft. 6. QUALITY ASSESSMENT. 6.1 Data validation The FSSP and PCASP are calibrated using glass beads of different known sizes. Both are cleaned and calibrated regularly. The nominal range of concentrations measurable by the PCASP is 0 - 20,000 /cm3. However, the maximum is thought to be as high as 40,000 /cm3 for this probe. The maximum concentration measurable by the FSSP is limited by the speed of the electronics in processing a droplet. It will also depend on how many of the droplets actually pass though the beam within the depth of field of the instrument. 6.2 Confidence level/accuracy judgment Statistical counting errors in the PCASP increase with particle size from <1% for particles smaller than 0.3 µm to 10% - 20% for particles of approximately 1 µm (Strapp et al., 1992). The counting accuracy of the FSSP is mainly determined by uncertainties in the sample volume, although laser inhomogeneities and coincidence of droplets in the beam also affect the measurement accuracy. The total uncertainty is nominally 27% (PMS). The sizing performance of the FSSP is nominally ±28% (PMS). 6.2.1 Precision The resolution of the FSSP depends on the range on which it is operated: Range 0 3 µm diameter Range 1 2 µm diameter Range 2 1 µm diameter Range 3 0.5 µm diameter The resolution of the PCASP varies from 0.02 µm diameter in the smallest size channels to 0.5 µm diameter in the largest size channels. 6.3 Usage guidance The PCASP measurements made when the aircraft was in cloud (that is, when droplets were being measured by the FSSP) should not be used, since its response to water droplets is unknown. 7. CONTACT ADDRESS. Name: D.W. Johnson Address: Meteorological Research Flight Y46 Building, DRA Farnborough, Hampshire. GU14 6TD ENGLAND. Telephone: +44 252 395734 Fax: +44 252 375688 Internet: dwjohnson@email.meto.govt.uk 8. OUTPUT PRODUCTS AND AVAILABILITY. 8.1 Tape products. Medium Spec: 8mm EXABYTE Format: ASCII Quantity: Each tape contains several flights. Status: Available. Planned schedule: Additional data will be integrated periodically as they are received. 8.2 Film products. NIL 8.3 Other products NIL