Background and Goals
The goals of the project are to assess current developments in Hagen in an overall spatial context against the background of climate change and demographic change. On this basis, an integrated adaptation concept with concrete recommendations for urban development planning, open space development and flood protection is to be developed.
Content time
toResearch area/region
- Germany
- Northrhine-Westphalia
- Low mountain ranges left and right of Rhine
City of Hagen
Steps in the process of adaptation to climate change
Step 1: Understand and describe climate change
In order to determine the impact on climatic and demographic changes in the city of Hagen, an approach was chosen that corresponds to standard climate impact and vulnerability analyses. The analysis concept is based on the methodological approach of the Vulnerability Network.
In a first step, data from climate monitoring with the existing sensitivity of the individual land uses and population are blended to effects that today's climate has on the urban area. In a second step, the data for climate projections with socio-economic projections will be merged for the future. For this, existing regional climate models are evaluated, which make statements for the Ruhr Metropolitan Region. It shows the possible bandwidths of climatic changes in climate change, urban climate and demographic change.
- River flooding
- Heat waves
- Extreme precipitation (incl. hail, snow)
Step 2a: Identify and assess risks - climate effects and impact
In the context of the analysis of the effects of climate change in the city of Hagen, the components of the climatic influence (climate signal) and the sensitivity of the population are considered, whose interaction leads to so-called climatic effects. The so-called adaptive capacity of society is not included in the analysis.
The effects of climate change in the fields of human health, urban development and construction, green and open spaces, fire brigades, civil protection and disaster relief, business and industry and water management are also considered in interaction with the consequences of demographic change.
Step 2b: Identify and assess risks - Vulnerability, risks and chances
Strengths, weaknesses, risks and opportunities were determined on the basis of the overall urban spatial climate analysis. The SWOT analysis serves to identify and concretize goals and guidelines for climate adaptation in the city of Hagen. The analysis identifies key factors that are important for a successful climate adaptation process in Hagen.
Step 3: Develop and compare measures
The effects of the climate or climate change determined in the stock analysis and the therefrom derived need for action form the evidence base for the overall municipal strategy. The chosen strategy approach is understood as a combination of spatial and thematic categorization. The derivation of goals and guidelines takes place with the involvement of all relevant stakeholders. In addition, the guidelines, measures and strategy include spatial-thematic objectives for different areas of action. The strategy includes information on the integration of climate adaptation into urban development, land use and development planning, landscape planning and planning permission. This also includes possibilities of presentation and determination as well as suitable methodical and instrumental approaches to dealing with uncertainties in the consideration of the sequential realization of plan contents. In addition, synergies and conflicts between adaptation to climate change for urban areas of action and, in addition, other urban development tasks will be established.
Measurements were drawn up that relate spatially and thematically to the identified concerns in the Hagen city area.
- 2021–2050 (near future)
Step 5: Watch and evaluate adaptation (monitoring and evaluation)
For the implementation of the selected climate adaptation measures, a controlling concept is sketched, which serves the documentation and monitoring of the implementation as well as the control of the goal achievement. Thus, in the case of unforeseen deviations, adjustments to the objectives or measures should be possible.
Participants
Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB)
Technical University of Dortmund: Institute of Spatial Planning (IRPUD)
City of Hagen: Environmental Agency
Regionalverband Ruhr (RVR)