“…Mahdi and Dhekale (2016) and Zhang et al (2017) used fixed temperature thresholds to identify CWs and HWs. Other recently published studies analysed both CW and HW (Barnett et al, 2012;Keevallik and Vint, 2015;Lhotka and Kyselý, 2015;Oleson et al, 2015;Spinoni et al, 2015;Unkaševi c and Toši c, 2015;Ceccherini et al, 2016;Plavcová and Kyselý, 2016;Capozzi and Budillon, 2017;Pereira et al, 2017;Song et al, 2018) and used temperature threshold based on percentiles. Most of these studies (Keevallik and Vint, 2015;Spinoni et al, 2015;Unkaševi c and Toši c, 2015;Basarin et al, 2016;Ceccherini et al, 2016;Capozzi and Budillon, 2017;Pereira et al, 2017) calculated daily thresholds centred on 5-, 15-, or 30-day windows.…”