Model input and output, performance measures and modifications in the source code for PALM simulations on Mäkelänkatu in Helsinki, Finland

This dataset is for air quality simulations conducted on Mäkelänkatu in Helsinki, Finland, using the PALM model system 6.0.

By default, simulations use modelled data as boundary conditions. This includes modelled meteorological data from MEPS (MetCoOp Ensemble Prediction System) and air pollutant background concentrations from the ADCHEM model. Alternatively, measured meteorology from the Kivenlahti mast in Espoo, Finland, and aerosol size distribution from the SMEAR III station in Kumpula, Helsinki, is applied.

Simulations:

• 9 June morning:
  • 0609_morning: use modelled boundary conditions for meteorology and air pollutants
  • 0609_morning_allmet_smear: use measured boundary conditions for meteorology and aerosol size distribution
  • 0609_morning_smear: use modelled boundary conditions for meteorology and measured for aerosol size distribution
  • 0609_morning_wd_smear: use modelled boundary conditions for meteorology, but modify the wind direction by using the measured wind direction at Kivenlahti. For aerosol size distribution, use the measured boundary conditions.
  • 0609_morning_wdk_smear: use modelled boundary conditions for meteorology, but modify the wind direction by using the measured wind direction at SMEAR III. For aerosol size distribution, use the measured boundary conditions.
  • precursor_0609_morning: precursor with modelled boundary conditions for meteorology
  • precursor_0609_morning_allmet: precursor with measured boundary conditions for meteorology
  • precursor_0609_morning_wd: precursor with modelled boundary conditions, but the wind direction is modified by using the measured wind direction at Kivenlahti.
  • precursor_0609_morning_wdk: precursor with modelled boundary conditions, but the wind direction is modified by using the measured wind direction at SMEAR III.
• 9 June evening:
  • 0609_evening: use modelled boundary conditions for meteorology and air pollutants
  • 0609_evening_allmet_smear: use measured boundary conditions for meteorology and aerosol size distribution
  • precursor_0609_evening: precursor with modelled boundary conditions for meteorology
  • precursor_0609_evening_allmet: precursor with measured boundary conditions for meteorology
• 12 December morning:
  • 1207_morning: use modelled boundary conditions for meteorology and air pollutants
  • 1207_morning_allmet_smear: use measured boundary conditions for meteorology and aerosol size distribution 
  • precursor_1207_morning: precursor with modelled boundary conditions for meteorology
  • precursor_1207_morning_allmet: precursor with measured boundary conditions for meteorology

Datasets are given separately for the root (no suffix), parent (suffix _N02) and child (_N03) domain. The content is following:

• input_monitoring_output_usercode
  • Input data
    • <run_identifier>_chemistry: emission data for gases
    • <run_identifier>_dynamic: initialisation and forcing data for meteorological variables and air pollutants
    • <run_identifier>_p3d: parameter file for model steering
    • <run_identifier>_salsa: emission data for aerosol particles
    • <run_identifier>_static: topography information
  • Simulation performance information
    • <run_identifier>_cpu: information on the CPU time consumed
    • <run_identifier>_header: information about the selected model parameters
    • <run_identifier>_rc: time step control output
  • Output data
    • <run_identifier>_av_masked_N03_M01.nc: temporally averaged wind speed data close to the ground
    • <run_identifier>_av_masked_N03_M04.nc: temporally averaged aerosol particle concentration data close to the ground
    • <run_identifier>_av_masked_N03_M06.nc: temporally averaged aerosol particle concentration data in a vertical column next to the air quality monitoring station on Mäkelänkatu
    • <run_identifier>_av_masked_N03_M07.nc: temporally averaged aerosol particle concentration data in a vertical column on the other side of the street from the air quality monitoring station on Mäkelänkatu
    • <run_identifier>_pr.nc: temporally vertical profile data on meteorological variables
    • <run_identifier>_ts.nc: flow statistics data
  • Modifications made to the source code (PALM revision, https://palm.muk.uni-hannover.de/trac/browser?rev=4416, last access: 10 Sept 2019)
    • chem_gasphase_mod.f90: chemical mechanism salsa+simple
    • chem_emissions_mod.f90 (modifications indicated with "MONA")
    • user_module.f90 (modification listed under "Current revisions")
    • Makefile (modification listed under "Current revisions")

See the PALM model webpage (https://palm.muk.uni-hannover.de) for details.