Mapping of the analysis of change between the * [map of heat islands/freshness 2020-2022] (https://www.donneesquebec.ca/recherche/dataset/ilots-de-chaleur-fraicheur-urbains-et-ecarts-de-temperature-relatifs-2020-2022) * and the* [cartography of heat islands/freshness using data from 2013-2014] (https://www.donneesquebec.ca/recherche/dataset/ilots-de-chaleur-fraicheur-urbains-et-ecarts-de-temperature-relatifs-2013-2014) * over the whole of urban Quebec on two scales, i.e. • a difference between the relative temperature differences (pixel) produced at the ecumene level of Quebec (2016 census, 167,764 km2). The relative temperature difference is the temperature difference in the city compared to a nearby wooded area. A positive value represents an increase in the relative temperature difference in 2020—2022 compared to 2013—2014, a negative value represents a decrease in the relative temperature difference in 2020—2022 compared to 2013—2014. • the Surface Urban Heat Island Intensity Index (SUHII), calculated at the level of the* [diffusion island] (https://census.gc.ca/census-recensement/2021/ref/dict/az/Definition-fra.cfm?ID=geo014 &) * (ID) of Statistics Canada included in the* [centers of 2021 census population] ( https://www150.statcan.gc.ca/n1/pub/92-195-x/2021001/geo/pop/pop-fra.htm ) * (CTRPOP) with at least 1,000 inhabitants and a density of at least 400 inhabitants per km2 to which a 2 km buffer zone is added, thus covers all of urban Quebec, i.e. 14,508 km2. The numbering of the urban heat and cooling island classes was used as a weighting, i.e. 1 for class 1, 2 for class 2, 3 for class 3, etc. up to class 9. The Urban Heat Island Intensity Index allows you to identify IDs that have had an increase in heat islands between 2020-2022 and 2013-2014. A positive value represents an increase in the relative temperature difference in 2020-2022 compared to 2013-2014, a negative value represents a decrease in the relative temperature difference in 2020-2022 compared to 2013-2014. Since surface temperatures have been analyzed at the scale of urban Quebec, but classes are produced for a given region, the temperature differences between the different classes vary from one region to another. Thus, there are observed differences in the predicted relative temperature differences between northern and southern Quebec. For example, a relative temperature difference of 2°C may be present in class 1 (cooler) in regions located in southern Quebec, but may be present in class 9 (very hot) in regions of northern Quebec. It is therefore important to interpret the identification of heat islands in relation to the relative temperature difference data produced at the ecumene scale of Quebec. The production of these data was coordinated by the National Institute of Public Health of Quebec (INSPQ) and carried out by the forest remote sensing laboratory of the Forestry Education and Research Center (CERFO), funded under the* [2013-2020 Climate Change Action Plan] (https://www.environnement.gouv.qc.ca/changementsclimatiques/plan-action.asp) * of the Government of Quebec entitled Le Québec en action vert 2020.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**