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It is also advisable to forbid compaction of downtown and to take special care of
present green areas.
There are many indications when designing new housing estates which could
clearly mitigate UHI effects: applying a building layout which does not close the
interiors of the housing estates but open them to the neighbouring green areas, using
openwork metallic fencing was much more conducive to ventilation than high brick
walls, which did not allow infi ltration of the air from the outside.
Mitigation of the urban heat island in areas located at a greater distance from the
city centre is easier. Small measures, e.g. planting deciduous trees, planting fl owerbeds
or reducing artifi cial surfaces can clearly mitigate UHI. Summarising, the following
Fig. 11.8 Simulations of UHI-index (°C) made by ENVI-Met software for 4 days of a year representing winter, spring, summer and autumn for Włodarzewska housing estate ( a ) and Twarda district ( b )
K. Błażejczyk et al.
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