Datastream : AOSNANOSMPS

AOS: Scanning-Mobility Particle Sizer: nanoscale particles

Active Dates
2016.03.29 - 2016.12.14

Measurement Categories

Originating Instrument
Scanning mobility particle sizer (SMPS)


Only measurements considered scientifically relevant are shown below by default.

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Measurement Units Variable
Characteristic length of DMA cm DMA_characteristic_length
Inner radius of DMA cm DMA_inner_radius
Outer radius of DMA cm DMA_outer_radius
Sutherland constant K Sutherland_constant
Aerosol flow rate L/min aerosol_flow ( time )
Altitude above mean sea level m alt
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Bypass flow rate L/min bypass_flow ( time )
50 percent cut-point diameter of the impactor nm d50 ( time )
Density g/cc density ( time )
Bins for diameter midpoint measurements nm diameter_midpoint ( diameter_midpoint )
Diffusion correction unitless diffusion_correction
Calculated time for the aerosol to flow through the sample column of the classifier s flow_time ( time )
Gas viscosity Pa*s gas_viscosity ( time )
Mean diameter of size distribution using a geometric average nm geometric_mean ( time )
Standard deviation of mean diameter of size distribution using geometric average nm geometric_mean_std ( time )
High voltage reading V high_voltage ( time )
HV polarity unitless hv_polarity
Errors reported by the instrument unitless instrument_errors ( time )
North latitude degree_N lat
East longitude degree_E lon
Low voltage reading V low_voltage ( time )
Lower size limit nm lower_size ( time )
Mean diameter of size distribution nm mean ( time )
Mean free path m mean_free_path ( time )
Median diameter of size distribution nm median ( time )
Mode diameter of size distribution nm mode ( time )
Multiple charge correction unitless multiple_charge_correction
Nanoparticle agglomerate mobility analysis unitless nanoparticle_agglomerate_mobility_analysis
Number size distribution (dN/dlogDp) count/cm^3 number_size_distribution ( time, diameter_midpoint )
Reference gas pressure kPa reference_gas_pressure
Reference gas temperature K reference_gas_temperature
Reference gas viscosity Pa*s reference_gas_viscosity
Reference mean free path m reference_mean_free_path
Relative humidity % relative_humidity ( time )
Sample pressure kPa sample_pressure ( time )
Sample relative humidity % sample_relative_humidity ( time )
Sample temperature degC sample_temperature ( time )
Sheath flow L/min sheath_flow ( time )
Scan status flag unitless status_flag ( time )
Time offset from midnight time ( time )
Time offset from base_time time_offset ( time )
Total concentration count/cm^3 total_concentration ( time )
Tube diameter cm tube_diameter
Tube length cm tube_length
Upper size limit nm upper_size ( time )


Southern Great Plains
SGPE13 Browse DataLamont, OK (Extended)
SGPS01 Browse DataSupplemental 1, Lamont, OK


Cynthia Salwen
Brookhaven National Laboratory

Robert Bullard
Brookhaven National Laboratory

Stephen Springston
Brookhaven National Laboratory
(631) 344-4477

Chongai Kuang
Brookhaven National Laboratory
(631) 344-7257