Inventory of buildings and land subject to the right of pre-emption. The right of pre-emption allows the City of Montreal to buy certain buildings or land in priority over any other purchaser in order to carry out projects for the benefit of the community.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Land use mapping.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Mass movement**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Cartographic dissemination of data on socio-economic land use for the territory of the City of Longueuil.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Digital terrain models offer a representation of the relief south of the 52nd parallel, in the form of an elevation matrix. This matrix makes it possible to visualize the territory in perspective and to perform three-dimensional spatial analyses, using appropriate software. A module specialized in three-dimensional data processing, such as 3D Analyst or Spatial Analyst, is required to visualize the digital altitude model in three dimensions. This digital altitude model (10-meter pixel matrix) is obtained by processing altimeter data (level curves and elevation points) from ** [topographic databases on a scale of 1/20,000] (https://www.donneesquebec.ca/recherche/fr/dataset/cartes-topographiques-a-l-echelle-de-1-20-000) **.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The dataset comprises a topographic map of Northeast Greenland delivered as a digital elevation model (DEM) with a spatial resolution of 8 metres. The DEM is provided as GeoTIFF and represents a seamless elevation surface covering the study area. The dataset was produced using input data from the ArcticDEM project, which is based on stereo imagery from the DigitalGlobe WorldView-1, WorldView-2 and WorldView-3 satellites. The elevation model integrates selected DEM strips recorded between 2012 and 2015 and has been processed to ensure consistency and continuity across the mosaic.

[IS] Um er að ræða rastergögn sem sýna árlegar mögulegar uppsafnaðar sólarstundir út frá landslagi á Íslandi yfir heilt ár og eru gögnin unnin úr IslandsDEM, 10 m hæðarlíkaninu í EPSG:8088. Rastergögnin byggja á hermun á landslagskuggum, þar sem útreikningar voru gerðir fyrir hvern klukkutíma á tímabilinu 1. janúar til 31. desember 2027 með tímabeltinu Atlantic/Reykjavik miðað við að dagsbirta sé til staðar þegar sólin er allt að 6 gráður undir sjóndeildarhring. Gildi pixla gefa til kynna fjölda hermdra tímapunkta þar sem viðkomandi staður var skilgreindur sem sólríkur; hærri gildi tákna því tíðara sólskin yfir árið. Skýjahula og aðrir þættir en landslag eru ekki teknir með í útreikningana. [EN] Annual theoretical maximum cumulative sunlight raster for Iceland based on terrain and topological features, generated from the IslandsDEM 10 m DEM in EPSG:8088. The raster summarizes hourly terrain-shadow simulations from 1 January to 31 December 2027, using the Atlantic/Reykjavik timezone and a civil twilight threshold of 6 degrees below the horizon. Pixel values indicate the number of simulated time steps in which each location was classified as sunlit; higher values represent more frequent sunlight occurrence during the year. Clouds and other factors beside terrain are not taken into account.

EN This shadow map illustrates terrain-induced shadows at 17:45 on August 12th, 2026. The solar eclipse will not be visible within the shaded areas. Shadow coverage may vary depending on the simulation resolution and the specific time. IS Skuggakortið sýnir staði þar sem skuggar falla klukkan 17:45 þann 12. ágúst 2026. Sólmyrkvinn mun ekki sjást á þeim svæðum sem eru í skugga. Skuggasvæðin geta verið breytileg vegna upplausnar hæðarkortsins og á öðrum tímum.

The digital terrain model (DTM) is a simplified representation of ground altimetry. The available data is in the form of an irregular triangular mesh (TIN). This is polygon numerical geographic data constructed by triangulating a set of points. The vertices are connected to a series of segments to form a mesh of triangles of different dimensions. This representation can be used as a basis for the 3D buildings of the digital base model. It should be noted that the data made available by the City is proposed for planning purposes and not for construction purposes given the associated decimeter details. The [3D buildings 2016 (LOD2 model with textures)]] (https://donnees.montreal.ca/ville-de-montreal/batiment-3d-2016-maquette-citygml-lod2-avec-textures2), the [2013 3D buildings (2013 3D buildings (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-plateau-mont-royal-buildal-build2-buildings-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-plateau-mont-royal-build2-buildings-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numerique-plateau-mont-royal-batiments-lod2-with-textures), or the [3D buildings 2009 (CityGML LOD2 model with textures)] (/city-of-montreal/model-numeric-s-citygml-lod2-with-textures) complement the digital terrain model in the urban territorial representation of Montreal. The [elevation data from aerial LiDAR] (/city-of-montreal/lidar-aerien-2015) are also available on the portal.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. In 2020, the Forest Inventory Directorate of the Ministry of Natural Resources and Forests (MRNF) began the production of vector layers of riparian ecotones. This type of layer is produced using a series of geomatic tools that use the canopy height model (MHC) and the topographic humidity index (TWI) produced from aerial LiDAR, as well as data from the ecoforest map of southern Quebec. The development of the tools and their configuration were carried out in collaboration with the forest hydrology laboratory at Laval University. The layer thus produced aims to delimit riparian ecotones, which are defined as [_ “a transition zone between the aquatic environment and the forest, characterized by muscinal, herbaceous or shrubby vegetation in wetlands and sometimes including a few scattered trees” _] (https://mffp.gouv.qc.ca/RADF/guide/chapitre-i/article-1/). The layer produced defines the area where a significant change in tree heights is observed on the MHC LiDAR. However, if deforestation, agricultural fields, or natural disturbances are adjacent to a body of water, no change in tree heights is observed. In these cases, the tool instead uses potential water accumulation data from the Topographic Humidity Index (TWI), as well as data from the ecoforest map, to delineate riparian ecotones. On the other hand, the tool does not make it possible to filter all of these exceptional cases and we thus find a few “false coastal ecotones” in the layer. For example, deforested land along a body of water can sometimes be included in the ecotone layer. Before using these data, it is therefore recommended to plan validation work by photo-interpretation or by means of field visits. It should also be noted that ecotone data is primarily used to support forest mandates such as the delineation of buffer zones along watercourses. Therefore, they are not contours of wetlands within the meaning of the Act respecting the conservation of wetlands and bodies of water. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**