The effects of elevation on thermal bioclimatic conditions in Uludag (Turkey)

Creative Commons License

Çalışkan O., Turkoglu N., Matzarakis A.

ATMOSFERA, sa.1, ss.45-57, 2013 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/s0187-6236(13)71061-0
  • Dergi Adı: ATMOSFERA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.45-57
  • Anahtar Kelimeler: Thermal comfort index, physiologically equivalent temperature, bioclimatic conditions, effect of elevation, environmental and atmospheric changes, CLIMATE-CHANGE, COMFORT, TRENDS, TEMPERATURES, INDEX
  • Ankara Üniversitesi Adresli: Evet

Özet

This study compares the thermal bioclimatic conditions recorded at Bursa (100 m) and Uludag (1878 m) meteorological stations at 7:00, 14:00 and 21:00 LST (local standard time) between 1975 and 2006, by using the physiologically equivalent temperature (PET), which is calculated from meteorological parameters. The effects of elevation-dependent environmental and atmospheric conditions on thermal perception (i.e., PET) values were analyzed and assessed. The analysis showed that the mean annual difference between PET values in Bursa and Uludag was 12 degrees C. The difference was lower in winter (9 degrees C PET) and higher in summer (15 degrees C PET). The highest difference between PET values occurred in the afternoon (16 degrees C PET) and the lowest difference occurred in the morning (8.4 degrees C PET). The differences occur as a result of high altitude and higher surface albedo due to snowfall, which leads to lower PET values and thus to less comfortable thermal conditions. The mean PET values of Bursa and Uludag decrease 0.67 degrees C every 100 m.