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The climate information system ("Klimainformatinssystem") of the Bremen State Office for Geoinformation ("Landesamt für Geoinformation Bremen”) links geographic data with the results of bioclimatic stress studies.
Available data
Manual
Access the webpage of the climate information system here (in German)
The Storm Surge Monitor, developed by scientists from the Institute for Coastal Research at the Helmholtz Zentrum Hereon, compares storm surges of the current season with the storm surges of the last decades in terms of height, frequency, duration and intensity.
Insight
Among other things, the storm surge monitor attempts to convey whether and to what extent the current storm surge occurrence on the German North Sea and Baltic Sea coasts is exceptional compared to previous years and whether statistics such as mean values, frequencies or length have changed.
What are the calculations' data basis?
Scientists at the Institute for Coastal Research at Helmholtz-Zentrum Geesthacht evaluate the tide gauge measurements collected by the relevant authorities on a daily basis and compare them with long-term statistics. The data basis of the individual tide gauges can be found on the web-pages of the Storm Surge Monitor.
Bremen has used a computer-based model to calculate precisely which locations in the city may be at risk from flooding during heavy precipitation events. The results are shown in the "Heavy Precipitation Information System" ("Auskunfts- und Informationssystem Starkregenvorsorge").
Why are some areas more affected than others?
Depending on the slope, elevation and structure of the terrain (for instance the type of paving, curbs or unsealed surfaces) the water streams flow more or less uncontrolled towards the nearest low point in the area.
Which data is included in the Map?
The heavy precipitation map shows you the precipitation streams at the surface, in particular, where water accumulates due to obstacles like buildings or walls. The map represents the calculated maximum water level during a two-hour heavy rainfall event.
Included heavy rainfall events and volumes:
The Heavy Precipitation Information System Bremen was developed as part of the KLAS project by the Senator for Climate Protection, Environment, Mobility, Urban and Housing Development, hanseWasser Bremen GmbH and the engineering firm Dr. Pecher AG from Erkrath.
Access the Heavy Precipitation Information System here (in German)
The Green Roof Cadastre ("Gründachkataster") provides open-access information on the suitability for the installation of green roofs of roofs in the municipality of Bremen.
How is the roofs' potential calculated?
The green roof cadastre used a three-dimensional surface model ("DOM"), to identified buildings and individual roof areas. The assessment of the suitability for a green roof was based on the respective roof's slope. Roofs with a slope of more than 45 degrees are not suitable for green roofs and were therefore not considered.
The green roof cadastre does not make any statements about the building and roof statics although this is also an important factor. An assessment of the statics must therefore be carried out by the respective house owners separately.
In addition to the indication of the general suitability of the roof area, the cadastre provides information on other positive effects of green roofs such as the binding of CO2 and fine dust, potential for rain retention and savings in rainwater charges.