33.5 Climate Master Plan - Screening for flood prone areas in urban areas and the synergy and con-flicts in measures for climate change mitigation and adaptation

Arne Bernt Hasling , Water and wastewater, COWI A/S, Kongens Lyngby, Denmark
It is important on an early stage to establish a Climate Master Plan based on overall screening of climate change consequences, possible measures for mitigation and adaptation and especially to identify conflicts and synergy in the use of measures. At a later stage the strategy in the master plan can be further detailed and specified for the most feasible solutions and measures seen as the best combination for mitigation and adaptation or very efficient for one of the purposes.

The Climate Master Plan including illustrations of the expected consequences as flood prone areas, storm surge and permanent flooded areas in the future, can improve the awareness of the climate change situation, independent of the climate change is caused by human activities, natural reasons or a combination.

The measures to be used for mitigation and adaptation can be in conflict or support both purposes in synergy. As an example the mitigation goes for very compact cities with high storage buildings and a minimum of transport while adaptation goes for open green cities with a lot of space to store or infiltrate storm water and to avoid heat-islands.

The presentation focus on methods and examples of screening of future flooding in urban areas and shows a catalogue for measures to adapt climate changes (rain, rising sea level, temperature, wind, sun etc.) including expected positive mitigation effects or conflicts. The Climate Master Plan, the climate change consequences in urban areas, adaptation measures catalogue and graphic presentation for improved awareness and decision tool will be illustrated by examples from Copenhagen Municipality and the huge infrastructure project Metro Cityringen in Copenhagen, including videos of the storm water flow in the streets, parks, railways etc. during heavy storms.