Co-Principal Investigator: Mr. Philip R.A. Brown Cloud Physics Research Manager Met Office Fitzroy Road Exeter EX1 3PB UK Tel: +44 1392 886740 Fax: +44 1392 885681 E-mail: phil.brown@metoffice.gov.uk Co-Principal Investigator Dr. Alan Blyth Head, NCAS Universities Facility for Atmospheric Measurement School of Earth & Environment University of Leeds LS2 9JT UK Tel: +44 113 343 1632; +44 131 650 6025 E-mail: a.m.blyth@leeds.ac.uk web: http:/ufam.nerc.ac.uk DATASET OVERVIEW This file contains 1Hz processed data from the BAe146 aircraft of the Facility for Airborne Atmospheric Measurement. The individual data parameters are as listed below. INSTRUMENT DESCRIPTIONS: General descriptions of all instruments on the FAAM aircraft are available from http://www.faam.ac.uk DATASET NAME: rico_faam_20050123_r0_B079.nc Contains the following measurements Time , seconds since 2005-01-23 00:00:00 +0000 , 1Hz time of measurement PARA0515 , s , 01Hz Data time in seconds from midnight on day the flight starts - may exceed 86400. PARA0516 , m s-1 , 01Hz Indicated air speed from the aircraft RVSM system. PARA0517 , m s-1 , 01Hz True air speed from the aircraft RVSM system and deiced temperature. PARA0520 , degK , 01Hz True air temperature from the Rosemount deiced temperature sensor. PARA0525 , degK , 01Hz True air temperature from the Rosemeount non-deiced temperature sensor. PARA0529 , degK , 01Hz Dew point from the General Eastern instrument. PARA0535 , gram kg-1 , 01Hz Liquid water content from the Johnson Williams instrument. PARA0537 , degK , 01Hz Uncorrected brightness temperature from the Heimann radiometer PARA0548 , degree , 01Hz Angle of attack from the turbulence probe PARA0549 , degree , 01Hz Angle of sideslip from the turbulence probe PARA0557 , m s-1 , 01Hz Aircraft vertical velocity from the INS PARA0560 , degree , 01Hz Roll from Honeywell H423 INU. PARA0561 , degree , 01Hz Pitch from Honeywell H423 INU. PARA0562 , degree , 01Hz Heading from Honeywell H423 INU. PARA0563 , m s-1 , 01Hz Groundspeed from the INS PARA0564 , degree , 01Hz Drift angle from the INS PARA0568 , cc-1 , 01Hz Total condensation nucleus concentration from TSI 3025A. PARA0572 , gram kg-1 , 01Hz Total water content from the TWC instrument. PARA0574 , ppb , 01Hz Ozone mixing ratio from the TECO 49. PARA0575 , m , 01Hz Radar height from the aircraft radar altimeter. PARA0576 , hPa , 01Hz Static pressure from the aircraft RVSM system. PARA0577 , hPa , 01Hz Pitot static pressure from the aircraft RVSM system. PARA0578 , m , 01Hz Pressure height from the aircraft RVSM system. PARA0579 , hPa , 01Hz Cabin pressure. PARA0580 , degree_north , 01Hz Latitude from the XR5 GPS system. PARA0581 , degree_east , 01Hz Longitude from the XR5 GPS system. PARA0582 , m , 01Hz Altitude from the XR5 GPS system. PARA0583 , m s-1 , 01Hz Northwards velocity from the XR5 GPS system. PARA0584 , m s-1 , 01Hz Eastwards velocity from the XR5 GPS system. PARA0585 , m s-1 , 01Hz Upwards velocitiy from the XR5 GPS system. PARA0602 , gram m-3 , 01Hz Uncorrected liquid water content from the Nevzorov probe. PARA0605 , gram m-3 , 01Hz Uncorrected total condensed water content from the Nevzorov probe. PARA0648 , m-1 , 01Hz Uncorrected absorption coefficient at 565nm, linear, from PSAP. PARA0649 , m-1 , 01Hz Uncorrected absorption coefficient at 565nm, log, from PSAP. PARA0660 , degC , 01Hz Cabin temperature at the core consoles. PARA0714 , m s-1 , 01Hz Northward wind component PARA0715 , m s-1 , 01Hz Eastward wind component PARA0716 , m s-1 , 01Hz Vertical wind component PARA0723 , degK , 01Hz Upwelling radiometric infrared brightness temperature. PARA0725 , K , 01Hz Dew-point derived from TWC probe specific humidity PARA0730 , degree_north , 01Hz Corrected latitude derived from XR5 GPS and Honeywell INU data. PARA0731 , degree_east , 01Hz Corrected longitude derived from XR5 GPS and Honeywell INU data. PARA0735 , m s-1 , 01Hz Corrected velocity north derived from XR5 GPS and Honeywell INU data. PARA0736 , m s-1 , 01Hz Corrected velocity east derived from XR5 GPS and Honeywell INU data. PARA0762 , m-1 , 01Hz Uncorrected blue total scattering coefficient from TSI 3563 nephelometer. PARA0763 , m-1 , 01Hz Uncorrected green total scattering coefficient from TSI 3563 nephelometer. PARA0764 , m-1 , 01Hz Uncorrected red total scattering coefficient from TSI 3563 nephelometer. PARA0765 , m-1 , 01Hz Uncorrected blue back scattering coefficient from TSI 3563 nephelometer. PARA0766 , m-1 , 01Hz Uncorrected green back scattering coefficient from TSI 3563 nephelometer. PARA0767 , m-1 , 01Hz Uncorrected red back scattering coefficient from TSI 3563 nephelometer. PARA0770 , ppb , 01Hz NO mixing ratio from the TECO 42 instrument. PARA0771 , ppb , 01Hz NO2 mixing ratio from the TECO 42 instrument. PARA0772 , ppb , 01Hz NOx mixing ratio from the TECO 42 instrument. PARA0773 , hPa , 01Hz Calibrated differential pressure between centre(P0) and S10 static PARA0774 , hPa , 01Hz Calibrated differential pressure between vertical ports PARA0775 , hPa , 01Hz Calibrated differential pressure between horizontal ports PARA0778 , hPa , 01Hz Static pressure from S9 fuselage ports PARA0779 , m s-1 , 01Hz True airspeed (dry-air) from turbulence probe PARA0781 , hPa , 01Hz Pitot-static pressure from corrected centre-port measurements PARA1201 , cm-3 , 01Hz droplet concentration from the FFSSP PARA1202 , gram m-3 , 01Hz Liquid water content from FFSSP PARA1203 , micron , 01Hz Mean volume radius from FFSSP PARA1221 , cm-3 , 01Hz FFSSP Concentration in size channel 0 PARA1222 , cm-3 , 01Hz FFSSP Concentration in size channel 1 PARA1223 , cm-3 , 01Hz FFSSP Concentration in size channel 2 PARA1224 , cm-3 , 01Hz FFSSP Concentration in size channel 3 PARA1225 , cm-3 , 01Hz FFSSP Concentration in size channel 4 PARA1226 , cm-3 , 01Hz FFSSP Concentration in size channel 5 PARA1227 , cm-3 , 01Hz FFSSP Concentration in size channel 6 PARA1228 , cm-3 , 01Hz FFSSP Concentration in size channel 7 PARA1229 , cm-3 , 01Hz FFSSP Concentration in size channel 8 PARA1230 , cm-3 , 01Hz FFSSP Concentration in size channel 9 PARA1231 , cm-3 , 01Hz FFSSP Concentration in size channel 10 PARA1232 , cm-3 , 01Hz FFSSP Concentration in size channel 11 PARA1233 , cm-3 , 01Hz FFSSP Concentration in size channel 12 PARA1234 , cm-3 , 01Hz FFSSP Concentration in size channel 13 PARA1235 , cm-3 , 01Hz FFSSP Concentration in size channel 14 PARA1301 , m-3 , 01Hz Particle concentration from the 2DC PARA1302 , gram m-3 , 01Hz Liquid water content from 2DC PARA1311 , m-3 , 01Hz Particle concentration from the 2DP PARA1312 , gram m-3 , 01Hz Liquid water content from 2DP PARA1401 , cm-3 , 01Hz 2DC Concentration in size channel 0 PARA1402 , cm-3 , 01Hz 2DC Concentration in size channel 1 PARA1403 , cm-3 , 01Hz 2DC Concentration in size channel 2 PARA1404 , cm-3 , 01Hz 2DC Concentration in size channel 3 PARA1405 , cm-3 , 01Hz 2DC Concentration in size channel 4 PARA1406 , cm-3 , 01Hz 2DC Concentration in size channel 5 PARA1407 , cm-3 , 01Hz 2DC Concentration in size channel 6 PARA1408 , cm-3 , 01Hz 2DC Concentration in size channel 7 PARA1409 , cm-3 , 01Hz 2DC Concentration in size channel 8 PARA1410 , cm-3 , 01Hz 2DC Concentration in size channel 9 PARA1411 , cm-3 , 01Hz 2DC Concentration in size channel 10 PARA1412 , cm-3 , 01Hz 2DC Concentration in size channel 11 PARA1413 , cm-3 , 01Hz 2DC Concentration in size channel 12 PARA1414 , cm-3 , 01Hz 2DC Concentration in size channel 13 PARA1415 , cm-3 , 01Hz 2DC Concentration in size channel 14 PARA1416 , cm-3 , 01Hz 2DC Concentration in size channel 15 PARA1417 , cm-3 , 01Hz 2DC Concentration in size channel 16 PARA1418 , cm-3 , 01Hz 2DC Concentration in size channel 17 PARA1419 , cm-3 , 01Hz 2DC Concentration in size channel 18 PARA1420 , cm-3 , 01Hz 2DC Concentration in size channel 19 PARA1421 , cm-3 , 01Hz 2DC Concentration in size channel 20 PARA1422 , cm-3 , 01Hz 2DC Concentration in size channel 21 PARA1423 , cm-3 , 01Hz 2DC Concentration in size channel 22 PARA1424 , cm-3 , 01Hz 2DC Concentration in size channel 23 PARA1425 , cm-3 , 01Hz 2DC Concentration in size channel 24 PARA1426 , cm-3 , 01Hz 2DC Concentration in size channel 25 PARA1427 , cm-3 , 01Hz 2DC Concentration in size channel 26 PARA1428 , cm-3 , 01Hz 2DC Concentration in size channel 27 PARA1429 , cm-3 , 01Hz 2DC Concentration in size channel 28 PARA1430 , cm-3 , 01Hz 2DC Concentration in size channel 29 PARA1431 , cm-3 , 01Hz 2DC Concentration in size channel 30 PARA1432 , cm-3 , 01Hz 2DC Concentration in size channel 31 PARA1501 , cm-3 , 01Hz 2DP Concentration in size channel 0 PARA1502 , cm-3 , 01Hz 2DP Concentration in size channel 1 PARA1503 , cm-3 , 01Hz 2DP Concentration in size channel 2 PARA1504 , cm-3 , 01Hz 2DP Concentration in size channel 3 PARA1505 , cm-3 , 01Hz 2DP Concentration in size channel 4 PARA1506 , cm-3 , 01Hz 2DP Concentration in size channel 5 PARA1507 , cm-3 , 01Hz 2DP Concentration in size channel 6 PARA1508 , cm-3 , 01Hz 2DP Concentration in size channel 7 PARA1509 , cm-3 , 01Hz 2DP Concentration in size channel 8 PARA1510 , cm-3 , 01Hz 2DP Concentration in size channel 9 PARA1511 , cm-3 , 01Hz 2DP Concentration in size channel 10 PARA1512 , cm-3 , 01Hz 2DP Concentration in size channel 11 PARA1513 , cm-3 , 01Hz 2DP Concentration in size channel 12 PARA1514 , cm-3 , 01Hz 2DP Concentration in size channel 13 PARA1515 , cm-3 , 01Hz 2DP Concentration in size channel 14 PARA1516 , cm-3 , 01Hz 2DP Concentration in size channel 15 PARA1517 , cm-3 , 01Hz 2DP Concentration in size channel 16 PARA1518 , cm-3 , 01Hz 2DP Concentration in size channel 17 PARA1519 , cm-3 , 01Hz 2DP Concentration in size channel 18 PARA1520 , cm-3 , 01Hz 2DP Concentration in size channel 19 PARA1521 , cm-3 , 01Hz 2DP Concentration in size channel 20 PARA1522 , cm-3 , 01Hz 2DP Concentration in size channel 21 PARA1523 , cm-3 , 01Hz 2DP Concentration in size channel 22 PARA1524 , cm-3 , 01Hz 2DP Concentration in size channel 23 PARA1525 , cm-3 , 01Hz 2DP Concentration in size channel 24 PARA1526 , cm-3 , 01Hz 2DP Concentration in size channel 25 PARA1527 , cm-3 , 01Hz 2DP Concentration in size channel 26 PARA1528 , cm-3 , 01Hz 2DP Concentration in size channel 27 PARA1529 , cm-3 , 01Hz 2DP Concentration in size channel 28 PARA1530 , cm-3 , 01Hz 2DP Concentration in size channel 29 PARA1531 , cm-3 , 01Hz 2DP Concentration in size channel 30 PARA1532 , cm-3 , 01Hz 2DP Concentration in size channel 31 PARA1550 , cm-3 , 01Hz droplet concentration from the PCASP (channels 2-14 only) PARA1551 , milligram m-3 , 01Hz Mass content from PCASP (channels 2-14 only) PARA1560 , cm-3 , 01Hz PCASP Concentration in size channel 0 PARA1561 , cm-3 , 01Hz PCASP Concentration in size channel 1 PARA1562 , cm-3 , 01Hz PCASP Concentration in size channel 2 PARA1563 , cm-3 , 01Hz PCASP Concentration in size channel 3 PARA1564 , cm-3 , 01Hz PCASP Concentration in size channel 4 PARA1565 , cm-3 , 01Hz PCASP Concentration in size channel 5 PARA1566 , cm-3 , 01Hz PCASP Concentration in size channel 6 PARA1567 , cm-3 , 01Hz PCASP Concentration in size channel 7 PARA1568 , cm-3 , 01Hz PCASP Concentration in size channel 8 PARA1569 , cm-3 , 01Hz PCASP Concentration in size channel 9 PARA1570 , cm-3 , 01Hz PCASP Concentration in size channel 10 PARA1571 , cm-3 , 01Hz PCASP Concentration in size channel 11 PARA1572 , cm-3 , 01Hz PCASP Concentration in size channel 12 PARA1573 , cm-3 , 01Hz PCASP Concentration in size channel 13 PARA1574 , cm-3 , 01Hz PCASP Concentration in size channel 14 PARA1600 , gram m-3 , 01Hz Automatically-corrected Nevzorov liquid water content PARA1601 , gram m-3 , 01Hz Automatically-corrected Nevzorov total water content PARA1602 , gram kg-1 , 01Hz Automatically-corrected Johnson-Williams liquid water content ;FAAM data rico_faam_yyyymmdd_rn_cnnn.nc ; ; where yyyymmdd is the flight start date, cnnn is the flight number and rn the ; version number. ; ;The NetCDF file comprises a header followed by the actual data. The header ;contains a list of the parameters in the dataset - their long names, short ;names, units, and measurement frequency. For each named parameter there is a ;matching parameter with FLAG added to the parameter name which contains ;details of the quality of each measurement. The FLAG parameters take four ;possible values: ; ;0 - measurement believed to be good. ;1 - warning, the measurement may be less accurate than normal. e.g. data range ; or rate of change may be exceeded. ;2 - measurement believed to be incorrect. ;3 - measurement is incorrect and bears no relationship to the true value - may ; be zeros, nines, or other error indicators. ; ;The NetCDF file header also contains: ; ;1. Flight number ;2. Flight date ;3. Data date - date datafile was created ;4. History - contains information about the data processing, not all of ; which may be relevant to the data in the final NetCDF file: ; a. The dataset the NetCDF file was produced from ; b. Input and output files used by the calibration process ; c. The versions of the software modules used by the calibration ; process ; d. Processor information ; e. Constants used for calibration ; f. Processing modules used for calibration ; g. Data start and end times ; h. Raw input parameters to the calibration process ; i. Calibrated output parameters to the calibration process ; j. Summary of quality flags applied by the calibration process ; k. Details of other data added to, or taken from, the original ; calibrated dataset.