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Emissions and air quality measurements


The Swiss Mobile Aircraft Emissions Measurement System (SMARTEMIS) is a state-of-the-art sampling and measurement system for gaseous pollutants and particulate matter in accordance with the International Civil Aviation Organization (ICAO) standards and recommended practices. It is one of three reference measurement systems worldwide for non-volatile particulate matter emissions from aircraft turbine engines.

SMARTEMIS Instruments

Instrument ListFunction/Species measured
Particle Measurement
Present InstrumentsAVL Micro Soot Sensor (MSS)nvPM mass (black carbon) concentration
AVL Particle Counter Advanced Plus (APC)nvPM number concentration
TSI Scanning Mobility Particle Sizer Model 3938 (long and nano DMA) Particle number size distribution
Chell CSM2000 + Photovolt 577PC ( SAE ARP 1179 compliant smoke meter and reflectometer)ICAO Smoke Number
Catalytic Instruments Catalytic Stripper CS08removal of volatile PM fraction
Aerodyne CAPS PMssa Monitor (660 nm)aerosol scattering, extinction, and single scattering albedo (SSA)
Possible extensionsFilter sampling system for thermal-optical analysis
* nvPM = non-volatile particulate matter; DMA = Differential mobility analyzer
Gas phase measurement
Present instrumentsHoriba PG350 multigas analyzer O2 ,CO, CO2, NOx, SO2
Ecophysics CLD 844 S hr NOx analyzerNO, NO2, NOx
Horiba MEXA 1170HFID Hydrocarbon (HC) analyzerTotal HC
Thermo Scientific 48iQ CO analyzerCO
Thermo Scientific 410i and 410 iQ CO2 analyzers CO2
Thermo Scientific 43i SO2 analyzerSO2
Thermo Scientific 146iQ Multigas calibratorcalibration gas dilution for span and multipoint calibrations
Possible extensionsCustom-built VOC sampling system for thermal desorption GC-MS analysis

Handheld aerosol instruments

InstrumentData reported
Naneos Partector 2lung deposited surface area (LDSA), estimated average particle size, number and mass concentrations
Palas Fidas FrogParticle number size distribution (0.18 – 10 microns), particle mass and number concentrations
AethLabs microAeth MA3005 wavelength absorption analysis by measuring the rate of change of transmitted light due to continuous particle deposition on filter at 880 nm (black carbon), 625 nm, 528 nm, 470 nm, 375 nm (UV PM)

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Application includes:

  • Measurement of wind speed and direction around airports to assist pilots and air traffic controllers in understanding the influence of terrain on take off and landing
LIDAR measuring wind parameters over the runway of Hausen am Albis airfield. This allows to draw conclusions about wind and its influence on departing and arriving small aircraft.
  • Measurement of downwash and wake vorticies of different aircraft
  • Wind measurements in complex alpine topography for studies of influence from turbulence on air traffic
  • Wind measurements for wind energy potential studies
  • Validation measurements for studies using the PALM model
You can find more information on the LIDAR here.

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Computing tools

Speedflyer Cluster

The ZAV currently maintains four computing nodes to perform state-of-the-art high performance computing jobs. . Our first two-node cluster, the Speedflyer, features two Intel Xeon Platinum 8164 processors per node, totaling in 104 usable CPU cores. The Speedflyer cluster in its initial form proved a great tool to perform modelling tasks, but more computing power was required to satisfy all in-house computing needs. Therefore, we scaled up our available computing power by adding two new nodes to our arsenal, that each feature two AMD Epyc 7742 per Node, totaling in an additional 256 available cores. With this setup, we can perform demanding numerical simulations in atmospheric sciences, urban climate research and collision risk modeling domains.

With our setup, we have enough computing power to serve all our needs and can rent out capacity as well.

If you are interested, feel free to contact us.

Make and modelLenovo SR650
CPU2 x Intel Xeon Platinum 8164 processor (2,0 GHz, 26 cores, 150 W)
RAM24 x ThinkSystem 32 GB TruDDR4, 2666 MHz (2Rx4, 1,2 V) RDIMM
Storage10x ThinkSystem SAS-512e Hot-Swap-capable 3.5″ 10TB HDD
RAID-ControllerThinksystems RAID 930-16i

Speedflyer: Weisshorn and Schwarzhorn

Make and modelLenovo ThinkSystem SR665
CPU2x AMD EPYC 7742 64-Core Processor per Node
RAM16x 32GB Samsung 3200MHz DIMM DDR4 RAM per Node
Raid -ControllerLenovo RAID 940-8i

We have successfully run several numerical simulation models on our clusters, among which are (not conclusive):

and more!

PALM Model System (Parallelized Large Eddy Simulation Model)

The PALM Model system is a modern high resolution computational fluid dynamics model, mainly used for simulating urban microclimate, planetary boundary layer flows and wind flows in complex terrain. We have applied this model for simulating urban climate and various wind flow scenarios, including flows in complex Swiss alpine terrain, an application of importance to the Swiss aviation and energy industry. With our cluster setup, we can achieve high resolution PALM simulation runs in a reasonable time frame.

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