Robusta beslut ska rädda liv när havet stiger

KLIMATANPASSNING Att fortsätta bygga kustnära utan hänsyn till att haven stiger kan kosta både liv och pengar. På KTH har man undersökt en metod som kan hjälpa kommuner att undvika de mest förödande konsekvenserna av havsnivåhöjningar.

Robusta beslut ska rädda liv när havet stiger
Foto: Adobe Stock

Att havet stiger är ett faktum, men prognoserna för hur snabbt och mycket är desto osäkrare. Något som komplicerar planeringen av bebyggelse och infrastruktur nära kusten.

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    – FN:s klimatpanel IPCC släppte i höstas en rapport där ett högsta scenario är en global medelhavsnivåhöjning på cirka en meter fram till år 2100, men det kan bli både mer och mindre. Att beräkna havsnivåhöjningen är mycket mer komplext än att beräkna temperaturhöjningen – det handlar bland annat om hur vissa glaciärer på Grönland och Antarktis kommer att påverkas av klimatförändringarna. Hittills har förändringarna vid polerna gått snabbare än man trott, säger Per Wikman-Svahn, som forskar om riskhantering och klimatanpassning på KTH.

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