The digital terrain model in the computational modelling of the flow over the Perdigão site: the appropriate grid size

Palma, José M. L. M.; Silva, Carlos A. M.; Gomes, Vítor C.; Silva Lopes, Alexandre; Simões, Teresa; Costa, Paula; Batista, Vasco T. P.

doi:https://doi.org/10.5194/wes-5-1469-2020

Articles | Volume 5, issue 4

https://doi.org/10.5194/wes-5-1469-2020

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

Special issue:

Flow in complex terrain: the Perdigão campaigns (WES/ACP/AMT...

https://doi.org/10.5194/wes-5-1469-2020

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

Articles | Volume 5, issue 4

Research article

|

05 Nov 2020

Research article |

| 05 Nov 2020

The digital terrain model in the computational modelling of the flow over the Perdigão site: the appropriate grid size

José M. L. M. Palma, Carlos A. M. Silva, Vítor C. Gomes, Alexandre Silva Lopes, Teresa Simões, Paula Costa, and Vasco T. P. Batista

Data sets

Perdigão: computational mesh (ALS.NE.20) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/gvtg-0g24

Perdigão: computational mesh (ALS.NE.40) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/ybwb-es40

Perdigão: computational mesh (ALS.NE.80) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/mwd6-9h81

Perdigão: computational mesh (ALS.SW.20) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/4t5v-r909

Perdigão: computational mesh (ALS.SW.40) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/w0jp-jf72

Perdigão: computational mesh (ALS.SW.80) V. Batista, V. Gomes, and J. Palma https://doi.org/10.34626/uporto/9eaq-4t35

Perdigão: aerial lidar survey raster map J. Palma, V. Batista, and V. Gomes https://doi.org/10.34626/uporto/8cj0-dj85

Perdigão: aerial lidar survey raster map (with buildings) J. Palma, V. Batista, and V. Gomes https://doi.org/10.34626/uporto/88r8-a206

Perdigão: Military charts raster map of perdigão region J. Palma, V. Batista, and V. Gomes https://doi.org/10.34626/uporto/126h-d173

Perdigão: SRTM raster map J. Palma, V. Batista, and V. Gomes https://doi.org/10.34626/uporto/83wp-kx09

Perdigão: Lidar point cloud J. Palma, V. Batista, V. Gomes, J. Lopes, J. Mann, and E. Dellwik https://doi.org/10.34626/uporto/fms2-rd63

Perdigão: Ortophotos in 5 cm and 20 cm resolution J. Palma, V. Batista, V. Gomes, J. Lopes, J. Mann, and E. Dellwik https://doi.org/10.34626/uporto/fvwj-bp86

Short summary

The digital terrain model is the first input in the computational modelling of atmospheric flows. The ability of thee meshes (high-, medium- and low-resolution) to replicate the Perdigão experiment site was appraised in two ways: by their ability to replicate the terrain attributes, elevation and slope and by their effect on the wind flow computational results. At least 40 m horizontal resolution is required in computational modelling of the flow over Perdigão.