simonom
commented
3 years ago Thanks for getting in touch Aldrian,
It refers to dN
It is the total for that mode which will be spread across the 8 size bins.
We seem to have a bug affecting water partitioning to seed particles, so if you think this will affect your work, please wait for the next release (hopefully this week).
Kind regards, Simon
National Centre for Atmospheric Science Postdoctoral Research Associate
From: AJO5 @.> Sent: 26 July 2021 18:43 To: simonom/PyCHAM @.> Cc: Subscribed @.***> Subject: [simonom/PyCHAM] Unit for pconc (#18)
Hi Simon,
According to the model variable description, the unit for pconc is # particles/cc (air). Using SMPS data, does this refer to the total number concentration (dN) for each size bin, or the density spectral (dN/dLogDp)?
I was also wondering about the following model variable: https://github.com/simonom/PyCHAM/blob/master/PyCHAM/output/example_scheme_inc_aq/Example_Run_Output_inc_aq/inputs/example_model_var_inc_aq.txt
It contains these variables: number_size_bins = 8 pconct = 0. pconc = 1.e4 mean_rad = 1.e-1
Does 1.e4 in pconc refer to the total particle concentration across all eight size bins or does it refer to the first mode of the particle size (since the mean_rad is provided)?
Thank you!
Aldrian Jerriko Undergraduate student at National University of Singapore
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AJO5
Hi Simon,
According to the model variable description, the unit for pconc is # particles/cc (air). Using SMPS data, does this refer to the total number concentration (dN) for each size bin, or the density spectral (dN/dLogDp)?
I was also wondering about the following model variable: https://github.com/simonom/PyCHAM/blob/master/PyCHAM/output/example_scheme_inc_aq/Example_Run_Output_inc_aq/inputs/example_model_var_inc_aq.txt
It contains these variables: number_size_bins = 8 pconct = 0. pconc = 1.e4 mean_rad = 1.e-1
Does 1.e4 in pconc refer to the total particle concentration across all eight size bins or does it refer to the first mode of the particle size (since the mean_rad is provided)?
Thank you!
Aldrian Jerriko Undergraduate student at National University of Singapore