Editing IPCC:AR6/SROCC/Chapter-4 (section)

===== 4.4.2.5.2 Projected accommodation =====

<div id="section-4-4-2-5accommodation-block-4"></div>

While there is no literature on projected accommodation, current trends suggest further uptake of accommodation approaches in coming decades, especially where protection approaches are not economically viable. Flood proofing of houses and establishment of new building codes to accommodate coastal hazards is also expected to become more common in coming decades. Similarly, accommodation measures for salinity are under further development, such as rice breeding programs to improve salt tolerance (Linh et al., 2012; Quan et al., 2018b). However, the achievements to improve salinity tolerance in rice are rather modest so far (Hoang et al., 2016) although efforts are expected to continue or even intensify. Given that index based insurance products have been included in NDCs and NAPs in a number of countries (Kreft et al., 2017), uptake is expected to grow. Ports can continue elevating hazard-prone facilities and the critical parts of port infrastructure can be protected by flood walls. Alternatively, ports can use advance measures to develop port facilities seaward (Aerts, 2018).

In summary, due to the large variety of different measures implemented in ad hoc ways worldwide, there is ''low confidence'' in quantitative projections of accommodation measures in response to SLR. However, there is ''high confidence'' that accommodation measures will continue to be a widespread adaptation option especially in combination with protection and retreat measures.

<div id="section-4-4-2-5accommodation-block-5"></div>

<span id="cost-of-accommodation"></span>