The study of hot extremes has traditionally been grounded in the analysis of maximum air temperature, often overlooking the effect of minimum air temperature but also the combined effect of daytime and nighttime thermal conditions (compound hot extremes). The present study examines climatic indices related to nighttime conditions like tropical nights (TRN), compound hot extreme days (CHD) but also three types of heat waves (HW...

The thermal conditions that prevail in cities pose a number of challenges to urban residents and policy makers related to quality of life, health and welfare as well as to sustainable urban development. However, the changes in thermal stress due to climate change are probably not uniform among cities with different background climates. In this work, a comparative analysis of observed and projected thermal stress (cold stress,...

The historical observations of the total cloud cover (TCC) index since 1900 from the National Observatory of Athens archives were used here, in order to investigate the inter‐annual variability of TCC. Multi‐spectral decomposition analysis was applied in order to resolve statistically significant modes of TCC variability out of the estimated stochastic variations. An increase of the Athens TCC (A‐TCC) was ascertained during th...