Datastream : AAFPCASP

ARM Aerial Facility (AAF) Passive Cavity Aerosol Spectrometer

Active Dates
2016.05.06 - 2016.09.14

Measurement Categories

Originating Instrument
Passive Cavity Aerosol Spectrometer aboard Aircraft (PCASP-AIR)


Only measurements considered scientifically relevant are shown below by default.

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Measurement Units Variable
Altitude above mean sea level m alt
Channel reserved for internal use V auxs5 ( time )
Average time it took for the particles to pass through the laserbeam us avg_transit ( time )
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Fifo full error flag unitless fifo_full ( time )
Average voltage registered by the high-gain signal V high_gain_signal ( time )
Instrument electronics temperature degC instrument_temperature ( time )
Laser power V laser_ref ( time )
North latitude degree_N lat
East longitude degree_E lon
Average voltage registered by the low-gain signal V low_gain_signal ( time )
Average voltage registered by the mid-gain signal V mid_gain_signal ( time )
Optical diameter nm optical_diameter ( optical_diameter )
Optical diameter bounds optical_diameter_bounds ( optical_diameter, bound )
An output channel on light-scattering instruments that indicates how many particles have been detected but rejected for counting because they were oversized. count/s rejected_particles ( time )
Probe reset flag unitless reset_flag ( time )
Sample flow rate (cm^3)/s sample_flow_rate ( time )
Sheath flow read (cm^3)/s sheath_flow_rate ( time )
Particle size distribution count/s size_distribution ( time, optical_diameter )
Number of samples measured count/s spp_samples ( time )
Time offset from midnight time ( time )
Time cell bounds time_bounds ( time, bound )
Time offset from base_time time_offset ( time )


Southern Great Plains
SGPF1 Browse DataGulfstream 159 Aircraft


Mikhail Pekour
Pacific Northwest National Laboratory
(509) 375-2470

Dan Nelson
Pacific Northwest National Laboratory
(509) 375-6895

Jason Tomlinson
Pacific Northwest National Laboratory
(509) 375-2715