International Journal of Environmental Research and Public Health Article Beyond Singular Climatic Variables—Identifying the Dynamics of Wholesome Thermo-Physiological Factors for Existing/Future Human Thermal Comfort during Hot Dry Mediterranean Summers Andre Santos Nouri 1,* , Ioannis Charalampopoulos 2 and Andreas Matzarakis 3,4 1 University of Lisbon, Faculty of Architecture, CIAUD—Research Centre for Architecture, Urbanism and Design, Rua Sá Nogeuira, Pólo Universitário do Alto da Ajuda, 1349-063 Lisbon, Portugal 2 Laboratory of General and Agricultural Meteorology, Agricultural University of Athens, 118 55 Athens, Greece;
[email protected] 3 Research Centre Human Biometeorology, German Meteorological Service, D-79104 Freiburg, Germany;
[email protected] 4 Chair of Environmental Meteorology, Faculty of Environment and Natural Resources, Albert-Ludwigs-University, D-79085 Freiburg, Germany * Correspondence:
[email protected]; Tel.: +351-919-247-292 Received: 23 August 2018; Accepted: 22 October 2018; Published: 25 October 2018 Abstract: Centered on hot dry Mediterranean summer climates, this study assesses the climatic data that was extracted from Lisbon’s meteorological station between the years of 2012 and 2016. Focused on the summer period, existing outdoor human thermal comfort levels that are already prone to extreme heat stress thresholds were evaluated. Such an assessment was rooted around identifying the relationship and discrepancies between singular climatic variables (e.g., air Temperature (Ta)); and adapted thermos-physiological indices (e.g., the modified physiologically equivalent temperature (mPET)), which also consider the influence of radiation fluxes over the human body. In addition, default urban canyon case studies (UCCs) were utilized to supplement how both differ and influence one another, especially under extreme weather conditions including heat waves events (HWE), and very hot days (VHD).