131823 20240219150722.0 doi 10.3390/su13116028 sideral 126256 ART-2021-126256 eng Beltran-Velamazan C. Universidad de Zaragoza (orcid)0000-0001-9455-0414 A method for the automated construction of 3d models of cities and neighborhoods from official cadaster data for solar analysis 2021 3D city models are a useful tool to analyze the solar potential of neighborhoods and cities. These models are built from buildings footprints and elevation measurements. Footprints are widely available, but elevation datasets remain expensive and time-consuming to acquire. Our hypothesis is that the GIS cadastral data can be used to build a 3D model automatically, so that generating complete cities 3D models can be done in a short time with already available data. We propose a method for the automatic construction of 3D models of cities and neighborhoods from 2D cadastral data and study their usefulness for solar analysis by comparing the results with those from a hand-built model. The results show that the accuracy in evaluating solar access on pedestrian areas and solar potential on rooftops with the automatic method is close to that from the hand-built model with slight differences of 3.4% and 2.2%, respectively. On the other hand, time saving with the automatic models is significant. A neighborhood of 400, 000 m2 can be built up in 30 min, 50 times faster than by hand, and an entire city of 967 km2 can be built in 8.5 h. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/MICINN/PID2019-104871RB-C21 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.889 2021 ENVIRONMENTAL SCIENCES 133 / 279 = 0.477 2021 Q2 T2 ENVIRONMENTAL STUDIES 57 / 128 = 0.445 2021 Q2 T2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 35 / 47 = 0.745 2021 Q3 T3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 7 / 9 = 0.778 2021 Q4 T3 0.664 2021 Energy Engineering and Power Technology 2021 Q1 Renewable Energy, Sustainability and the Environment 2021 Q1 Management, Monitoring, Policy and Law 2021 Q1 Geography, Planning and Development 2021 Q1 5.0 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Monzón-Chavarrías M. Universidad de Zaragoza (orcid)0000-0002-0492-3625 López-Mesa B. Universidad de Zaragoza (orcid)0000-0003-1458-7685 5015 110 Universidad de Zaragoza Dpto. Arquitectura Área Construc. Arquitectónicas 13, 11 (2021), 6028 [19 pp.] Sustainability (Basel) Sustainability (Switzerland) 2071-1050 7978439 http://zaguan.unizar.es/record/131823/files/texto_completo.pdf Versión publicada 2781404 http://zaguan.unizar.es/record/131823/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131823 articulos driver 2024-02-19-13:27:23 ARTICLE