Information contained in particle wave files

These table show the variables generated by the various modules of PySP2. A name and description of each variable is provided.

Waveform variables processed from .sp2b files

Variable name	Variable description
time	timestamp in seconds since the epoch
Flag	Internal flag
Res1	Res1
Res5	Res5
Res6	Res6
Res7	Res7
Res8	Res8
EventIndex	The index of the particle event
DateTimeWaveUTC	The number of seconds since midnight on Jan 1, 1904.
TimeWave	Time stamp in seconds past midnight
DateTimeWave	Local time stamp in seconds past midnight on Jan 1, 1904
Data_ch#	The waveform in channel #. These numbers range from -32767 to 32767.

Waveform properties for each particle

Variable name	Variable description
DateTimeWaveUTC	The number of seconds since midnight on Jan 1, 1904.
TimeWave	Time stamp in seconds past midnight
DateTimeWave	Local time stamp in seconds past midnight on Jan 1, 1904
Base_ch#	The base value of the particle spectrum in channel #.
PkHt_ch#	The height of the peak in channel #, after correcting for baseline.
PkPos_ch#	The location of the peak (in peak indices, or 0.2 microsecond divisions)
PkStart_ch#	The start of the spectrum in peak indices
PkEnd_ch#	The end of the spectrum in peak indicies
PkHalfRise_ch#	Position of the half peak, on the rising side
PkHalfDecay_ch#	Position of the half peak, on the falling side
FtAmp_ch#	Gaussian fit amplitude of peak (channels 0, 4 only)
FtPos_ch#	Position of Gaussian fit of the peak (channel 0, 4 only)
PkFWHM_ch#	The half width of the Gaussian fit of the peak
IncanRatioch5ch6	Incandescent temperature ratio, Channel 5/Channel 6
IncanPkOffsetch5ch6	Peak Position ch5 - Peak Position ch6
IncanRatioch1ch2	Incandescent temperature ratio, Channel 5/Channel 6
IncanPkOffsetch1ch2	Peak Position ch5 - Peak Position ch6

Particle properties

Scatter	Scattering cross section
logScatter	Log of the scattering cross section
ScatDiaSO4	Particle diameter assuming the particle is a spherical sulfate particle [nm]
ScatMassSO4	Particle mass assuming the particle is a spherical sulfate particle [ng]
ScatDiaBC50	Scattering particle assuming 50% Black Carbon [nm]
sootMass	Estimated mass of particle from incandescence assuming soot [ng]
sootDiam	Estimated diameter of particle from incandescence assuming round soot [nm]

Particle number and mass size distributions

time	Time in seconds since the epoch
TimeWave	Time in seconds since Jan 1, 1904 at midnight
NumConcIncan	Number concentration of incandescence particles [cm-3]
NumConcIncanScat	Number concentration of incandescence particles also detected by scattering channel [cm-3]
NumConcTotal	Total number concentration of all particles [cm-3]
NumConcScatSat	Number concentration of scattering particles that saturate the channel [cm-3]
NumConcScat	Number concentration of scattering particles excluding saturated signals [cm-3]
MassIncand2	Mass concentration of incandescence particles [ng cm-3]
MassIncand2Sat	Mass concentration of particles detected by both incandescence and scattering channels [nm cm-3]
MassIncand2total	Total mass concentration of particles [ng cm-3]
MassScat2	Mass concentration of particles detected by scattering channel
ScatNumEnsemble	Particle size distribution of scattering particles [cm-3 per bin]
ScatMassEnsemble	Particle mass size distribution of scattering particles [ng cm-3 per bin]
IncanNumEnsemble	Incandescence particle size distribution [cm-3 per bin]
IncanMassEnsemble	Incandescence particle mass distribution [ng cm-3 per bin]
ScatNumEnsembleBC	Scattering particle size distribution assuming black carbon [ng cm-3 per bin]
NumFracBC	Number fraction of black carbon particles