2016; Åström et al., 2017; Dino and Meral Akgül, 2019; Venter et al., 2020), although air conditioning increasingly faces some feasibility constraints . Building interventions alone have low to medium effectiveness independent of the region. Many behavioural changes, such as personal and home heat protection, have already been implemented in SEU . To reach high adaptation, a combination of low, medium and high effectiveness measures in different sectors and sub-regions is needed, many of which entail systems' transformations   and remain effective at higher warming levels  . These transformations have long lead times, thereby requiring timely start of implementation including regions that are not yet experiencing high heat stress  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report