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The estimation of the influence of land cover types on the distribution of land surface temperature and air temperature in Poznań based on Landsat satellite data and measurement data
Agnieszka Majkowska
Abstract
The main aim of this thesis is to assess the thermal conditions of the city of Poznań in terms of spatial variability of land surface temperature and statistically estimated air temperature in various types of land cover. The scope of this paper covers data collected in years 2009-2016. A set of in-situ measurement data from a network of 10 stations located in different areas of the city was enhanced with satellite data from the Landsat 5 and Landsat 8 satellites. The paper makes use of all available 28 scenes for the research period that meet the accepted quality criteria including cloud-free data. To study the spatial differentiation of the temperature variability, CORINE Land Cover 2012 was used as the classification of land cover types. The raw satellite data was re-calculated to the land surface temperature. The selection of point values from converted scenes and the use of measurement data led to the creation of statistical models allowing to air temperature’s estimation at the height of 2 meters above the active layer in various types of land cover for radiation weather type. In total, 6 linear regression models were created by means of the cross-validation techniques with the coefficients of determination r2 in the range from 0.81 to 0.90. Statistical models were created for the following types of land cover: continuous urban fabric, discontinuous urban fabric, airports, sports and leisure facilities, broad-leaved forests. In addition, one common statistical model was created using all available data which did not distinguish the particular type of land cover. The average area of the surface urban heat island in Poznań covers 31.2 km2, which is about 12% of the city area. The results of the research clearly indicate that the estimated air temperature for continuous urban fabric is about 0.9oC higher in comparison with the average value for the whole city. The highest value of the estimated air temperature occurs within industrial and commercial areas and is 1.6oC higher than the average. These are the warmest parts of Poznań. Respectively, the coldest areas are water bodies – especially lakes, natural grasslands and forest complexes.- Record ID
- UAM6ee61f2e8ce448069aa1c09daa50a033
- Diploma type
- Doctor of Philosophy
- Author
- Title in Polish
- Estymacja wpływu pokrycia terenu na rozkład temperatury powierzchni czynnej i powietrza w Poznaniu na podstawie danych satelitarnych Landsat oraz danych pomiarowych
- Title in English
- The estimation of the influence of land cover types on the distribution of land surface temperature and air temperature in Poznań based on Landsat satellite data and measurement data
- Language
- pol (pl) Polish
- Certifying Unit
- Faculty of Geographical and Geological Sciences (FoGaGS)
- Discipline
- geography / (Earth sciences domain) / (biological sciences)
- Scientific discipline (2.0)
- Status
- Finished
- Year of creation
- 2018
- Defense Date
- 23-10-2018
- Title date
- 23-10-2018
- Supervisor
- External reviewers
- Pages
- 102
- URL
- http://hdl.handle.net/10593/24046 Opening in a new tab
- Keywords in English
- surface urban heat island Landsat, land surface temperature, land cover types
- Abstract in English
- The main aim of this thesis is to assess the thermal conditions of the city of Poznań in terms of spatial variability of land surface temperature and statistically estimated air temperature in various types of land cover. The scope of this paper covers data collected in years 2009-2016. A set of in-situ measurement data from a network of 10 stations located in different areas of the city was enhanced with satellite data from the Landsat 5 and Landsat 8 satellites. The paper makes use of all available 28 scenes for the research period that meet the accepted quality criteria including cloud-free data. To study the spatial differentiation of the temperature variability, CORINE Land Cover 2012 was used as the classification of land cover types. The raw satellite data was re-calculated to the land surface temperature. The selection of point values from converted scenes and the use of measurement data led to the creation of statistical models allowing to air temperature’s estimation at the height of 2 meters above the active layer in various types of land cover for radiation weather type. In total, 6 linear regression models were created by means of the cross-validation techniques with the coefficients of determination r2 in the range from 0.81 to 0.90. Statistical models were created for the following types of land cover: continuous urban fabric, discontinuous urban fabric, airports, sports and leisure facilities, broad-leaved forests. In addition, one common statistical model was created using all available data which did not distinguish the particular type of land cover. The average area of the surface urban heat island in Poznań covers 31.2 km2, which is about 12% of the city area. The results of the research clearly indicate that the estimated air temperature for continuous urban fabric is about 0.9oC higher in comparison with the average value for the whole city. The highest value of the estimated air temperature occurs within industrial and commercial areas and is 1.6oC higher than the average. These are the warmest parts of Poznań. Respectively, the coldest areas are water bodies – especially lakes, natural grasslands and forest complexes.
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/phd/UAM6ee61f2e8ce448069aa1c09daa50a033/
- URN
urn:amu-prod:UAM6ee61f2e8ce448069aa1c09daa50a033