Sensitivity of spatial aerosol particle distributions to the boundary conditions in the PALM model system 6.0

Kurppa, Mona; Roldin, Pontus; Strömberg, Jani; Balling, Anna; Karttunen, Sasu; Kuuluvainen, Heino; Niemi, Jarkko V.; Pirjola, Liisa; Rönkkö, Topi; Timonen, Hilkka; Hellsten, Antti; Järvi, Leena

doi:https://doi.org/10.5194/gmd-13-5663-2020

Articles | Volume 13, issue 11

https://doi.org/10.5194/gmd-13-5663-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The PALM model system 6.0 for atmospheric and oceanic boundary-layer...

https://doi.org/10.5194/gmd-13-5663-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 11

Model evaluation paper

|

18 Nov 2020

Model evaluation paper |

| 18 Nov 2020

Sensitivity of spatial aerosol particle distributions to the boundary conditions in the PALM model system 6.0

Mona Kurppa, Pontus Roldin, Jani Strömberg, Anna Balling, Sasu Karttunen, Heino Kuuluvainen, Jarkko V. Niemi, Liisa Pirjola, Topi Rönkkö, Hilkka Timonen, Antti Hellsten, and Leena Järvi

Supplement

https://doi.org/10.5194/gmd-13-5663-2020-supplement

Data sets

Input files and scripts for creating PALM simulation input files on Mäkelänkatu in Helsinki, Finland Mona Kurppa and Jani Strömberg https://doi.org/10.5281/zenodo.3839684

Model input and output, performance measures and modifications in the source code for PALM simulations on Mäkelänkatu in Helsinki, Finland Mona Kurppa https://doi.org/10.5281/zenodo.3824351

Model code and software

Source code of the PALM model system (revision 4416) Mona Kurppa https://doi.org/10.5281/zenodo.4005366

Python scripts for evaluating PALM simulations against mobile air quality observations on Mäkelänkatu in Helsinki, Finland Mona Kurppa https://doi.org/10.5281/zenodo.3839462

Short summary

High-resolution modelling is needed to solve the aerosol concentrations in a complex urban area. Here, the performance of an aerosol module within the PALM model to simulate the detailed horizontal and vertical distribution of aerosol particles is studied. Further, sensitivity to the meteorological and aerosol boundary conditions is assessed using both model and observation data. The horizontal distribution is sensitive to the wind speed and stability, and the vertical to the wind direction.