Articles | Volume 19, issue 3
https://doi.org/10.5194/gmd-19-1321-2026
https://doi.org/10.5194/gmd-19-1321-2026
Development and technical paper
 | 
12 Feb 2026
Development and technical paper |  | 12 Feb 2026

A simple step heating approach for wall surface temperature estimation in the SOlar and LongWave Environmental Irradiance Geometry (SOLWEIG) model

Nils Wallenberg, Björn Holmer, Fredrik Lindberg, Jessika Lönn, Erik Maesel, and David Rayner

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Cited articles

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Apogee Instruments: Owner's Manual, Infrared Radiometer, Models SI-111, SI-121, SI-131, and SI-1H1, Rev: 11-June-2024, Apogee Instruments, Inc., 721 West 1800 North, Logan, Utah 84321, USA, https://www.apogeeinstruments.com/content/SI-100-manual.pdf (last access: 27 January 2026), 2024b. 
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Short summary
This work presents a method to calculate wall surface temperatures in complex urban areas using a step heating equation based on air temperature and net radiation at the wall surface. Our results show that the step heating approach is fast and accurate, comparable to other more complex methods. This method can potentially be applied in different areas of interest where wall surface temperatures are important, e.g. modeling of outdoor thermal comfort, building energy and urban energy balance.
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