Version 1
: Received: 23 July 2020 / Approved: 23 July 2020 / Online: 23 July 2020 (12:20:40 CEST)
How to cite:
Liang, J.; Gong, J.; Xie, X.; Sun, J. Solar3D: A 3D Extension of GRASS GIS r.sun for Estimating Solar Radiation in Urban Environments. Preprints2020, 2020070556. https://doi.org/10.20944/preprints202007.0556.v1
Liang, J.; Gong, J.; Xie, X.; Sun, J. Solar3D: A 3D Extension of GRASS GIS r.sun for Estimating Solar Radiation in Urban Environments. Preprints 2020, 2020070556. https://doi.org/10.20944/preprints202007.0556.v1
Liang, J.; Gong, J.; Xie, X.; Sun, J. Solar3D: A 3D Extension of GRASS GIS r.sun for Estimating Solar Radiation in Urban Environments. Preprints2020, 2020070556. https://doi.org/10.20944/preprints202007.0556.v1
APA Style
Liang, J., Gong, J., Xie, X., & Sun, J. (2020). Solar3D: A 3D Extension of GRASS GIS r.sun for Estimating Solar Radiation in Urban Environments. Preprints. https://doi.org/10.20944/preprints202007.0556.v1
Chicago/Turabian Style
Liang, J., Xiuping Xie and Jun Sun. 2020 "Solar3D: A 3D Extension of GRASS GIS r.sun for Estimating Solar Radiation in Urban Environments" Preprints. https://doi.org/10.20944/preprints202007.0556.v1
Abstract
Solar3D is an open-source software application designed to interactively calculate solar irradiation at three-dimensional (3D) surfaces in a virtual environment constructed with combinations of 3D city models, digital elevation models (DEMs), digital surface models (DSMs) and feature layers. The GRASS GIS r.sun solar radiation model computes solar irradiation based on two-dimensional (2D) raster maps for given day, latitude, surface and atmospheric conditions. With the increasing availability of 3D city models and demand for solar energy, there is an urgent need for better tools to computes solar radiation directly with 3D city models. Solar3D extends GRASS GIS r.sun from 2D to 3D by feeding the model with input, including surface slope, aspect and time-resolved shading, that is derived directly from the 3D scene using computer graphics techniques. To summarize, Solar3D offers several new features which, as a whole, distinguish itself from existing 3D solar irradiation tools: (1) the ability to consume massive heterogeneous 3D city models, including massive 3D city models such as oblique airborne photogrammetry-based 3D city models (OAP3Ds or integrated meshes); (2) the ability to perform near real-time pointwise calculation for duration from daily to annual; (3) the ability to integrate and interactively explore large-scale heterogeneous geospatial data. (4) the ability to calculate solar irradiation at arbitrary surface positions including at rooftops, facades and the ground. Solar3D is publicly available at https://github.com/jian9695/Solar3D.
Keywords
Solar radiation; 3D city models; Urban environment; GRASS GIS r.sun; 3D extension
Subject
Environmental and Earth Sciences, Remote Sensing
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
