Since it is insufficiently clear to urban planners in the Netherlands to what extent design measures can reduce heat stress and which urban spaces are most comfortable, this study evaluates the impact of shading, urban water, and urban green on the thermal comfort of urban spaces during hot summer afternoons. The methods used include field surveys, meteorological measurements, and assessment of the PET (physiological equivalent temperature). In total, 21 locations in Amsterdam (shaded and sunny locations in parks, streets, squares, and near water bodies) were investigated. Measurements show a reduction in PET of 12 to 22 °C in spaces shaded by trees and buildings compared to sunlit areas, while water bodies and grass reduce the PET up to 4 °C maximum compared to impervious areas. Differences in air temperature between the locations are generally small and it is concluded that shading, water and grass reduce the air temperature by roughly 1 °C. The surveys (n = 1928) indicate that especially shaded areas are perceived cooler and more comfortable than sunlit locations, whereas urban spaces near water or green spaces (grass) were not perceived as cooler or thermally more comfortable. The results of this study highlight the importance of shading in urban design to reduce heat stress. The paper also discusses the differences between meteorological observations and field surveys for planning and designing cool and comfortable urban spaces. Meteorological measurements provide measurable quantities which are especially useful for setting or meeting target values or guidelines in reducing urban heat in practice.
Dit project omvat een verkennend onderzoek dat beoogt de technische route, de scope en de randvoorwaarden van de energietransitie op vakantieparken en campings in beeld te brengen. De sector voor vakantieparken en campings zal, net als alle andere sectoren, binnen dertig jaar nul-emissies van broeikasgassen moeten bereiken. De gemeente Goeree-Overflakkee en de Provincie Zuid-Holland zijn voornemens om een project op te zetten om de voor Goeree-Overflakkee belangrijke sector te helpen de energietransitie te maken. De gemeente en provincie willen graag antwoord op de vraag welke kennis en welke partijen nodig zijn om de duurzaamheidsdoelstelling zodanig in een beleidsproces te gieten dat de belangen van de vele stakeholders in deze sector samenkomen op een wijze dat de doelstelling gehaald wordt.This project entails an exploratory study that aims to map the technical route, scope and preconditions of the energy transition at holiday parks and campsites. The holiday park and camping sector, like all other sectors, will have to achieve zero greenhouse gas emissions within thirty years. The municipality of Goeree-Overflakkee and the Province of South Holland intend to set up a project to help this important sector on Goeree-Overflakkee to make the energy transition. The municipality and province would like an answer to the question of what knowledge and which parties are needed to put the sustainability objective into a policy process in such a way that the interests of the many stakeholders in this sector come together in a way that the objective is achieved.