Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 5.240
IF5.240
IF 5-year value: 5.768
IF 5-year
5.768
CiteScore value: 8.9
CiteScore
8.9
SNIP value: 1.713
SNIP1.713
IPP value: 5.53
IPP5.53
SJR value: 3.18
SJR3.18
Scimago H <br class='widget-line-break'>index value: 71
Scimago H
index
71
h5-index value: 51
h5-index51
Preprints
https://doi.org/10.5194/gmd-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2020-126
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: model experiment description paper 04 Aug 2020

Submitted as: model experiment description paper | 04 Aug 2020

Review status
This preprint is currently under review for the journal GMD.

Sensitivity analysis of the PALM model system 6.0 in the urban environment

Michal Belda1, Jaroslav Resler2, Jan Geletič2, Pavel Krč2, Björn Maronga3, Matthias Sühring3, Mona Kurppa6, Farah Kanani-Sühring3,4, Vladimír Fuka1, Kryštof Eben2, Nina Benešová5, and Mikko Auvinen7 Michal Belda et al.
  • 1Department of Atmospheric Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
  • 2Institute of Computer Science, Czech Academy of Sciences, Prague, Czech Republic
  • 3Institute of Meteorology and Climatology, Leibniz University Hannover, Hannover, Germany
  • 4Harzenergie GmbH & Co. KG, Goslar, Germany
  • 5Czech Hydrometeorological Institute, Prague, Czech Republic
  • 6Institute for Atmospheric and Earth System Research / Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
  • 7Finnish Meteorological Institute, Helsinki, Finland

Abstract. Sensitivity of the PALM model 6.0 is tested in a real urban environment in the vicinity of a typical crossroad in a densely built-up residential area in Prague, Czech Republic. Two types of scenarios are employed. First are the synthetic scenarios altering mainly surface and material parameters such as albedo, emissivity or wall conductivity, testing sensitivity of the model simulations to potentially erroneous setting of model inputs. Second, real-life type scenarios are analyzed, in which commonly considered urban heat island mitigation measures are applied, such as greening of the streets or changing surface materials. For the first-type scenarios, surface parameters used in radiation balance equations are found to be the most sensitive overall followed by volumetric heat capacity and thermal conductivity of walls. Other parameters show limited average effect, however, some can still be significant in some parts of the day, such as surface roughness in the morning hours. Second type, the mitigation scenarios, show urban vegetation to be the most effective measure, especially when considering both physical and biophysical temperature indicators. Influence of both type scenarios was also tested for air quality, specifically PM10 dispersion which generally shows behaviour opposite to thermal indicators, ie., improved thermal comfort brings deterioration of PM10 concentrations.

Michal Belda et al.

Interactive discussion

Status: open (until 13 Dec 2020)
Status: open (until 13 Dec 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Michal Belda et al.

Model code and software

PALM 6.0 r4093 Jan Geletic et al. https://doi.org/10.25835/0068421

Michal Belda et al.

Viewed

Total article views: 295 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
207 84 4 295 39 10 8
  • HTML: 207
  • PDF: 84
  • XML: 4
  • Total: 295
  • Supplement: 39
  • BibTeX: 10
  • EndNote: 8
Views and downloads (calculated since 04 Aug 2020)
Cumulative views and downloads (calculated since 04 Aug 2020)

Viewed (geographical distribution)

Total article views: 228 (including HTML, PDF, and XML) Thereof 227 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 01 Dec 2020
Publications Copernicus
Download
Short summary
The analysis summarizes how sensitive the modeling of urban environment is to changes of physical parameters describing the city (e.g. reflectivity of surfaces) and to several heat island mitigation scenarios in a real city quarter in Prague, Czech Republic. We used the LES modeling system PALM in version 6.0. Surface parameters connected to radiation show the highest sensitivity in this configuration. For heat island mitigation, urban vegetation is shown to be the most effective measure.
The analysis summarizes how sensitive the modeling of urban environment is to changes of...
Citation