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Measured parameters on board of MetAir's aircraft METAIR-DIMO HB-2335

see also www.eufar.net and navigate: Aircraft & Experiments / Operators / METAIR
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parameter

instrument
/method


range
from..to


resolution
parameter / time


precision / accuracy

calibration or checks
position (x,y,z)
GPS TANS Vector
OXS RT3102
global 1 m / 1 s
0.01 m / 100 Hz
5..20 m
0.1 .. 1 m
fix points
ground speed (vx, vy)
GPS TANS Vector
OXS RT3102
global 0.1 m/s / 1 Hz 0.01 m/s / 100 Hz 0.1..0.5 m/s
0.03 m/s
zero and wind
attitude (azi, pitch, roll) GPS TANS Vector

OXS RT3102
azi 0..360°
pitch/roll 60°
0.1° / 10 Hz

0.01° / 100 Hz
0.1 / 0.5°

0.05°
fix and wind
acceleration
(vertical / lateral / longitudinal)
Kistler/DLR
OXS RT3102
-20..+30 m/s2
±100 m/s2
0.01 m/s2 / 10 Hz
0.01 m/s2 / 100 Hz
0.01 m/s2 integration of 3-d ground speed and position
air temperature Meteolabor thermocouple -50..50 oC 0.1 °C / 10 Hz 0.1 / 0.5 oC ice-water / mercury
fly-byes at stations
dewpoint
Meteolabor dewopoint mirror -50..50 oC 0.1 °C / 1 Hz 0.1 / 0.5 oC psychrometer
5 pressures (1 absolute, 4 diff.) for ... Keller capacitve sensors 300..1300; 0..50 hPa 0.02 hPa / 10 Hz 0.1 / 0.5 hPa factory calibrated
...flow angles differences of pairs (left/right, top/bottom) -20..20° 0.1° / 0.1 s 0.1°/0.5° wind residuals
...true airspeed calculated (p,T,u) 10..70 m/s 0.1 m/s / 10 Hz 0.2 / 0.5 m/s wind residuals
...and pressure altitude integrated (p,T,u) 0..7000 mMSL 1 m / 4 s 3 / 10 m mountaintops
height above ground Laser altimeter RIEGL LD90-3300HR 0.1..500 m 0.1 m / 100 Hz 0.1 / 0.5 m against altitude from RT3102 and known topography (e.g. SRTM)
3-d wind (x,y,z) post flight processing
from above parameters
0.5..30 m/s 0.5 m/s / 10 Hz 0.5 / 1.0 m/s wind during maneuvers
2 aerosol sizes (0.3 and 0.5 mm) MetOne LASER particle counter 0..200 cm-3 0.02 cm-3 / 1 s
0.02 cm-3 factory calibration
aerosols (>10 nm)   (*) TSI condensation particle counter 0..1e4 cm-3 0.04 cm-3 / 1 s
0.04 cm-3 fact.cal.+zero
15 aerosol sizes (0.3 to 20 mm) GRIMM dust monitor model 1.08
0..500 cm-8 8 e-3 cm-3 / 6..60 s 8 e-3 cm-3 fact.cal.+zero
O3 (slow, accurate) PSI / UV absorption 2 ppb .. 1 ppm 1 ppb / 4 s 1 / 2 ppb cal. gas
O3 (fast, but, drifting)   (**) Scintrex LOZ-3 (Eosin-Y chemilum.) 1 ppb..1 ppm 0.1 ppb / 10 Hz 10 ppb against UV-photometer
speciated hydrocarbons (C4..C10) Gaschromatograph Airmotec HC-1010 10 ppt..10 ppb 10 ppt / 10' 10 ppt / 50 ppt or 20 % cal.gas
NO2, NOx, NOy, HNO3, PAN, Ox METAIR-NOxTOy: 6-channel Luminol-detector with CrO3- and Mo-converters 0.5..500 ppb 0.1 ppb / 1..5 s 0.1 /0.5 ppb NO2 calibration gas
SO2 (**) FIAMS, Adelaide (Luminol with H2O2) 0.5..500 ppb 0.1 ppb / 1 Hz 0.1 / 1.0 ppb cal. gas
Peroxides (H2O2 and organic)   (*) Aerolaser (enzymatic fluorometry) 0.1..20 ppb 50 ppt / 10 s 0.1 / 0.5 ppb H2O2 in water
Formaldehyde (HCHO) (*) similar as for H2O2 (above)       HCHO in water
CO2 LICOR- IRGA LI-6262 and LI-7500  (both modified) 310..410 ppm (adj.) 0.05 ppm / 10 Hz 0.05 / 0.3 ppm cal. gas
and flasks
H2O LICOR- IRGA LI-6262 and LI-7500  (both modified) 0..20 g/kg  (adj.) 0.01 g/kg / 10 Hz 0.01 / 0.05 g/kg dewpoint mirror

CO
Aerolaser AL-5003 (fast Vacuum UV-fluorescence, special bare-bone version) 2 ppb..5 ppm 1 ppb / 5 Hz 1  ppb / 3 ppb cal. gas (also in-flight)
plus flasks
manual sampling of up to 12 glass flasks for CO2, CO, CH4, N2O, H2, SF6, 18O, 13C Installation and Operation MetAir,
Analysis MPI Jena
      MPI Jena

CH4
Fast Methane Analyzer Los Gatos
LGR DLT-100
modified by MetAir and ETH
0.3..25 ppm 0.1 ppb / 1 Hz 1 ppb ? under evaluation calibration gas
and flasks, also for assessing any H2O interference
automatic sampling units
for VOC's, biog. VOC's, SF6, etc. (*)
MetAir / FZJ        
IR surface temperature (*) Heitronics KT15.85 -25 .. 200 °C 0.1 °C / 1 Hz 0.5 °C known surfaces like lakes
IR imager (*) FLIR or other rented cameras        
Laser Scanner (*) RIEGL Q560 ALS
rented as complete Laser Pod from ARA
50 to 1000 mGND 5 cm / 100 kHz 5 .. 10 cm ground truthing
           

 

*)       optional, not installed in standard instrumentation; may be added or exchanged with another instrument/parameter.
**)     not used since more than 10 years, might be out of order