Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2022, Vol. 19, No. 3, pp. 23-34
Satellite risk mapping of urban air overheating (by the example of Helsinki, Finland)
V.I. Gornyy
1 , S.G. Kritsuk
1 , I.Sh. Latypov
1 , A.B. Manvelova
1 , A.A. Tronin
1 1 Saint Petersburg Scientific Research Center for Ecological Safety RAS, Saint Petersburg, Russia
Accepted: 05.05.2022
DOI: 10.21046/2070-7401-2022-19-3-23-34
An algorithm has been proposed and a methodology has been developed for satellite mapping of risks (probabilities) of exceeding the minimum mortality temperature by the average daily air temperature. Knowledge of these risks opens the possibility to estimate the economic damage due to an increase in the number of deaths caused by overheating. The urgency of the problem is determined by the observed global warming. The city of Helsinki (Finland) was chosen as the object of study. The materials for the study were a series of 32 scenes from Landsat series satellites obtained in the IR thermal range of the spectrum and the results of standard urgent observations at urban weather stations WMO ID 2978 and METAR EFHK Vantaa (airport) for the period 2007–2019. The result was a map of the risk of exceeding the temperature of the minimum mortality because of overheating of the urban environment, built up for the city of Helsinki. The heterogeneity of the spatial distribution of risks is shown. Industrial areas are characterized by high risks of overheating of the urban environment, and recreational areas are characterized by minimal risks. It is noted that the results obtained can be used as information support for the management decision-making system aimed at early fending off threats to environmental safety due to overheating of the urban environment because of global warming.
Keywords: city, heat island, satellite, air temperature, mapping, minimum mortality temperature, risk
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