Helsinki Heat Vulnerability Index

This analysis evaluates the Helsinki Heat Vulnerability Index. Thermal vulnerability is a combination of exposure, sensitivity and adaptability. Heat exposure refers to very high temperatures in the city area. Earth surface temperatures from satellite data over a four-year period and data from local weather stations have been used to determine how often heat waves occur. Thermal sensitivity refers to the intensity of an individual's reaction at high temperatures. This depends on individual characteristics, such as age and health problems. In the analysis, this is taken into account by the population density of the elderly in different parts of the city. Adaptability refers to a city's system-level ability to cope with the effects of thermal events. In the adaptability analysis, data on urban vegetation and humidity are collected from satellites in the summer of 2021, as these have a major impact on urban thermal resilience. The smallest variable, i.e. subdivisions, of the statistical database [Series of regions](https://https://aluesarjat.fi/) has been used in the analysis. Areas entirely at sea have been excluded from the analysis. **Coordinate system used** - ETRS-GK25 (EPSG:3879) **Vector levels** - Urban Heat Vulnerability dataset of Helsinki, Finland **Raster levels** Urban Heat Adaptivity Index Urban Heat Exposure Index Urban Heat Impact Index Urban Heat Vulnerability Index **Attributes of vector levels and their descriptions** - "ID": District IDName: District Name - "TP": Total Population - "TP-AG1": Total Population: Age Group under 1 - "TP-AG2": Total Population: Age Group 1 to 6 - "TP-AG3": Total Population: Age Group 7 to 12 - "TP-AG4": Total Population: Age Group 13 to 15 - "TP-AG5": Total Population: Age Group over 64 - "Area": District Area (km2) - "HVP": Heat Vulnerable Population - "MARK": Urban Heat Sensitivity Index - "Avg-UHVI": Average Urban Heat Vulnerability Index (From Raster) - "Avg-UHII": Average Urban Heat Impact Index (From Raster) - "Avg-UHEI": Average Urban Heat Exposure Index (From Raster) - "Avg-UHAI": Average Urban Heat Adaptivity Index (From Raster) **Raster level source** - Landsat 8 Thermal Data obtained from the months of June, July and August for the years 2018, 2019, 2020, 2021 - Sentinel 2 Vegetation and Moisture Data obtained for the day 26.07.2021 **Other sources** - [Source of Weather Data for Helsinki from Finnish Meteorological Institute](https://en.ilmatieteenlaitos.fi/) - [Source of Population and their Age-Group Distribution Data of Helsinki from Greater Helsinki Open Statistical Databases](https://stat.hel.fi/pxweb/en/Aluesarjat/Aluesarjat__vrm__vaerak__pksoa/A03S_HKI_Vakiluku_aidinkieli.px/) - [Source of Landsat 8 Data](https://earthexplorer.usgs.gov/) - [Source of Sentinel 2 Data](https://scihub.copernicus.eu/) The analysis was done by Ecoten - Urban Comfort.