Scientist: climate change contributes to the heavy rain

Scientist: Climate change contributes to the heavy rain

After the long and heavy rainfall in the middle of the week, more and more catastrophic consequences occur: the number of dead growth, alone in rhineland-palatinate and north rhine-westphalia died over 100 people. Many houses rooted or are sub-puffed. The infrastructure is struck, some places do not work electricity or telephone. Bruchen have damaged the floods or torn. The science media center interviewed scientists about the connection with climate change.

"In 2021 no longer asks if climate change has helped. The question is just how much", stress carl-friedrich schleusner, group leader at the geographic institute of the humboldt university of berlin. "We know that due to the emphasis on an increase in heavy rainfall comes and thus unfortunately with more familiar, devastating flooding events as well as tragically now in west germany, belgium and luxembourg." at the same time weather conditions took to such events.

Probability increases

Attribute research konne now in many cases for heat and sharp rain, "that the likelihood for the occurrence of such events, as well as the intensity of such events, increase by climate change", says the swiss climatisist sebastian sippel. "Pro a degree celsius temperature increase can absorb the atmosphere about seven percent more moisture."

Douglas maun, head of the research group regional climate at the university of graz, estimates that climate change is the youngest downstream "it has surplused 10 to 20 percent". Research describes the strongness of an extreme event by the year: the sewage is designed for a few years a few years, a dam should withstand a 100-year event, a nuclear power plant a 10.000-year event.

"Bernd" is ranked

"The current event was for many parameters above all previous observations", christian grams and julian quinting drove from the institute for meteorology and climate research in eggenstein-leopoldshafen: deep "bernd" had been ranked and have wanted warm mediterranean air from the north sea and eastern europe to suden, where she had risen over the kuhle’s air mass. This has guided to the massive rainfall. The soil was already saturated and strongly structured landing with partly deep flux finers have flooded the surface outflow.

Another much discussed effect is the shifting of the summer circulation of the atmosphere, which is concerned for long-lasting weather conditions, enlightened stefan rahmstorf, professor at the potsdam institute for climate facco research. "So a few horses are left to the heat wave, a ‘stuck’ deep leads to continuous rain." that has to do that that the arctic had exposed three times in the last few decades as the rest of the earth.

Citys like swaths plan

"In order to achieve effective protection of the infrastructures against such extreme events, the conventional settlement water and water-building bemengs approaches are not sufficient", provides boris lehmann, owner of the chair for hydraulic engineering and hydraulic at the tu darmstadt, clear. But it is not possible, "all elements of our cultural landscapes and infrastructures" convert and secure. It therefore applies, "in potentially hazardous areas through the use of simulation tools first to investigate where the system-related ‘bottlenecks’ and claims potential" are located.

Christian kuhlicke, head of the working group extreme events at the helmholtz center for environmental research in leipzig, called for the aging infrastructure "in the next five to ten years, to rebuild future-proof". Electricity and communication networks had to be designed, "that they also work in extreme layers". The reconstruction in the affected areas offer the possibility, "to set new standards for the future". Dorfer, city and landscapes should be designed for example like swaths. Natural-based solutions are brilliant roofers, better sturdy possibilities on open flat and decentralized storage options in natural backtake zones.

If you want to find out if your area could be affected, the attaches annegret thieken, professor for natural risk research at the university of potsdam, for the river thwares nationwide available danger cards to the heart. In some communities, pendants for heavy rain were also available. Due to the unclear legal situation, these were not published. The federal institute for urban and spatial research as well as the natural hazard check of the insurance industry. Warning cards of german weather service should, according to thieken being stronger in the media, should be more effective notes about the website of the federal office for population protection and disaster relief.