Thermal Comfort Assessment of the Urban Mediterranean Climate in Fethiye, Southwest Anatolia, Turkey
Recent rapid growth and expansion of urbanized areas has brought an increase in the effects of lowered thermal
comfort levels in outdoor spaces within the cities. With the increases in urbanization and tourism in summer period at coastal
Mediterranean locations, urban planners and architects are looking more closely at the effect of climate on urban planning
for climate adaptation.This study, has been done to reveal the change of thermal perception in this increasing urbanization
during the summer when the tourist activities increase. Physiological Equivalent Temperature(PET) values were calculated
by using hourly meteorological data individually measured by automatic weather station in the shade and an open spacein
July and August month in which urban bioclimatic conditions are most uncomfortable for coastal Mediterranean cities.
During the day, when tourism activities are more intense, large thermal differences between the shady and open spaces were
obtained; in open spaces the thermal conditions were very hot for a long period. Significant result was close PET and
temperature values in the morning until the mid of the day between open and shady observation site. When the wind breeze
begin in the mid of the day from cooler sea surface, PET values in the shaded site have decreased quicker than open one
until the end of the certain day time. Shading effect has become evident with wind breeze. In the evening, we obtained no
difference between shady and exposed areas, when conditions were generally cold and comfortable. Results revealed that the
significance of summer wind breeze between sea-land interaction, reduction of long-wavelength radiation of buildings in
urban areas, formation of deep urban canyons for thermal comfort in Mediterranean climate. PET values should be
considered in urban planning and architectural design for a healthy and sustainably comfortable urban life.
Keywords— Urban Bioclimatic Comfort, Sustainable Cities, Urban Development, Climate Change, PET.