@article{ThiekenOttoPisietal.2015, author = {Thieken, Annegret and Otto, Antje and Pisi, Sebastian and Petrow, Theresia and Kreibich, Heidi and Kuhlicke, Christian and Schr{\"o}ter, Kai and Kienzler, Sarah and M{\"u}ller, Meike}, title = {Schlussfolgerungen und Empfehlungen}, series = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, journal = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, publisher = {Deutsches Komitee Katastrophenvorsorge}, address = {Bonn}, isbn = {978-3-933181-62-6}, pages = {184 -- 196}, year = {2015}, language = {de} } @misc{ThiekenKienzlerKreibichetal.2016, author = {Thieken, Annegret and Kienzler, Sarah and Kreibich, Heidi and Kuhlicke, Christian and Kunz, Michael and M{\"u}hr, Bernhard and M{\"u}ller, Meike and Otto, Antje and Petrow, Theresia and Pisi, Sebastian and Schr{\"o}ter, Kai}, title = {Review of the flood risk management system in Germany after the major flood in 2013}, issn = {1866-8372}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-100600}, pages = {12}, year = {2016}, abstract = {Widespread flooding in June 2013 caused damage costs of €6 to 8 billion in Germany, and awoke many memories of the floods in August 2002, which resulted in total damage of €11.6 billion and hence was the most expensive natural hazard event in Germany up to now. The event of 2002 does, however, also mark a reorientation toward an integrated flood risk management system in Germany. Therefore, the flood of 2013 offered the opportunity to review how the measures that politics, administration, and civil society have implemented since 2002 helped to cope with the flood and what still needs to be done to achieve effective and more integrated flood risk management. The review highlights considerable improvements on many levels, in particular (1) an increased consideration of flood hazards in spatial planning and urban development, (2) comprehensive property-level mitigation and preparedness measures, (3) more effective flood warnings and improved coordination of disaster response, and (4) a more targeted maintenance of flood defense systems. In 2013, this led to more effective flood management and to a reduction of damage. Nevertheless, important aspects remain unclear and need to be clarified. This particularly holds for balanced and coordinated strategies for reducing and overcoming the impacts of flooding in large catchments, cross-border and interdisciplinary cooperation, the role of the general public in the different phases of flood risk management, as well as a transparent risk transfer system. Recurring flood events reveal that flood risk management is a continuous task. Hence, risk drivers, such as climate change, land-use changes, economic developments, or demographic change and the resultant risks must be investigated at regular intervals, and risk reduction strategies and processes must be reassessed as well as adapted and implemented in a dialogue with all stakeholders.}, language = {en} } @article{ThiekenKienzlerKreibichetal.2016, author = {Thieken, Annegret and Kienzler, Sarah and Kreibich, Heidi and Kuhlicke, Christian and Kunz, Michael and M{\"u}hr, Bernhard and M{\"u}ller, Meike and Otto, Antje and Petrow, Theresia and Pisi, Sebastian and Schr{\"o}ter, Kai}, title = {Review of the flood risk management system in Germany after the major flood in 2013}, series = {Ecology and society : E\&S ; a journal of integrative science for resilience and sustainability}, volume = {21}, journal = {Ecology and society : E\&S ; a journal of integrative science for resilience and sustainability}, number = {2}, publisher = {Resilience Alliance}, address = {Wolfville, NS}, issn = {1708-3087}, doi = {10.5751/ES-08547-210251}, pages = {12}, year = {2016}, abstract = {Widespread flooding in June 2013 caused damage costs of €6 to 8 billion in Germany, and awoke many memories of the floods in August 2002, which resulted in total damage of €11.6 billion and hence was the most expensive natural hazard event in Germany up to now. The event of 2002 does, however, also mark a reorientation toward an integrated flood risk management system in Germany. Therefore, the flood of 2013 offered the opportunity to review how the measures that politics, administration, and civil society have implemented since 2002 helped to cope with the flood and what still needs to be done to achieve effective and more integrated flood risk management. The review highlights considerable improvements on many levels, in particular (1) an increased consideration of flood hazards in spatial planning and urban development, (2) comprehensive property-level mitigation and preparedness measures, (3) more effective flood warnings and improved coordination of disaster response, and (4) a more targeted maintenance of flood defense systems. In 2013, this led to more effective flood management and to a reduction of damage. Nevertheless, important aspects remain unclear and need to be clarified. This particularly holds for balanced and coordinated strategies for reducing and overcoming the impacts of flooding in large catchments, cross-border and interdisciplinary cooperation, the role of the general public in the different phases of flood risk management, as well as a transparent risk transfer system. Recurring flood events reveal that flood risk management is a continuous task. Hence, risk drivers, such as climate change, land-use changes, economic developments, or demographic change and the resultant risks must be investigated at regular intervals, and risk reduction strategies and processes must be reassessed as well as adapted and implemented in a dialogue with all stakeholders.}, language = {en} } @misc{ThiekenKienzlerKreibichetal.2016, author = {Thieken, Annegret and Kienzler, Sarah and Kreibich, Heidi and Kuhlicke, Christian and Kunz, Michael and Muehr, Bernhard and Mueller, Meike and Otto, Antje and Petrow, Theresia and Pisi, Sebastian and Schroeter, Kai}, title = {Review of the flood risk management system in Germany after the major flood in 2013}, series = {Ecology and society : a journal of integrative science for resilience and sustainability}, volume = {21}, journal = {Ecology and society : a journal of integrative science for resilience and sustainability}, publisher = {Resilience Alliance}, address = {Wolfville}, issn = {1708-3087}, doi = {10.5751/ES-08547-210251}, pages = {8612 -- 8614}, year = {2016}, abstract = {Widespread flooding in June 2013 caused damage costs of (sic)6 to 8 billion in Germany, and awoke many memories of the floods in August 2002, which resulted in total damage of (sic)11.6 billion and hence was the most expensive natural hazard event in Germany up to now. The event of 2002 does, however, also mark a reorientation toward an integrated flood risk management system in Germany. Therefore, the flood of 2013 offered the opportunity to review how the measures that politics, administration, and civil society have implemented since 2002 helped to cope with the flood and what still needs to be done to achieve effective and more integrated flood risk management. The review highlights considerable improvements on many levels, in particular (1) an increased consideration of flood hazards in spatial planning and urban development, (2) comprehensive property-level mitigation and preparedness measures, (3) more effective flood warnings and improved coordination of disaster response, and (4) a more targeted maintenance of flood defense systems. In 2013, this led to more effective flood management and to a reduction of damage. Nevertheless, important aspects remain unclear and need to be clarified. This particularly holds for balanced and coordinated strategies for reducing and overcoming the impacts of flooding in large catchments, cross-border and interdisciplinary cooperation, the role of the general public in the different phases of flood risk management, as well as a transparent risk transfer system. Recurring flood events reveal that flood risk management is a continuous task. Hence, risk drivers, such as climate change, land-use changes, economic developments, or demographic change and the resultant risks must be investigated at regular intervals, and risk reduction strategies and processes must be reassessed as well as adapted and implemented in a dialogue with all stakeholders.}, language = {en} } @book{ThiekenBesselCallsenetal.2015, author = {Thieken, Annegret and Bessel, Tina and Callsen, Ines and Falter, Daniela and Hasan, Issa and Kienzler, Sarah and Kox, Thomas and Kreibich, Heidi and Kuhlicke, Christian and Kunz, Michael and Matthias, Max and Meyer, Volker and M{\"u}hr, Bernhard and M{\"u}ller, Meike and Otto, Antje and Pech, Ina and Petrow, Theresia and Pisi, Sebastian and Rother, Karl-Heinz and Schr{\"o}ter, Kai}, title = {Das Hochwasser im Juni 2013}, series = {Schriftenreihe des DKKV ; 53}, journal = {Schriftenreihe des DKKV ; 53}, publisher = {Deutsches Komitee Katastrophenvorsorge}, address = {Bonn}, isbn = {978-3-933181-62-6}, publisher = {Universit{\"a}t Potsdam}, pages = {207}, year = {2015}, language = {de} } @article{PetrowThieken2015, author = {Petrow, Theresia and Thieken, Annegret}, title = {Entwicklunge in der Fl{\"a}chenvorsorge}, series = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, journal = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, publisher = {Deutsches Komitee Katastrophenvorsorge}, address = {Bonn}, isbn = {978-3-933181-62-6}, pages = {92 -- 99}, year = {2015}, language = {de} } @misc{PetrowHeistermannBronstert2017, author = {Petrow, Theresia and Heistermann, Maik and Bronstert, Axel}, title = {Analysis of Flash Floods in Germany}, series = {Hydrologie und Wasserbewirtschaftung}, volume = {61}, journal = {Hydrologie und Wasserbewirtschaftung}, publisher = {Bundesanst. f{\"u}r Gew{\"a}sserkunde}, address = {Koblenz}, issn = {1439-1783}, pages = {212 -- 212}, year = {2017}, language = {en} } @article{PetrowHasanOttoetal.2015, author = {Petrow, Theresia and Hasan, Issa and Otto, Antje and Thieken, Annegret}, title = {Entwicklungen in der Gesetzgebung zm Hochwasserrisikomanagment}, series = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, journal = {Das Hochwasser im Juni 2013 : Bew{\"a}hrungsprobe f{\"u}r das Hochwasserrisikomanagement in Deutschland}, publisher = {Deutsches Komitee Katastrophenvorsorge}, address = {Bonn}, isbn = {978-3-933181-62-6}, pages = {47 -- 51}, year = {2015}, language = {de} } @phdthesis{Petrow2009, author = {Petrow, Theresia}, title = {Floods in Germany : analyses of trends, seasonality and circulation patterns}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-37392}, school = {Universit{\"a}t Potsdam}, year = {2009}, abstract = {Flood hazard estimations are conducted with a variety of methods. These include flood frequency analysis (FFA), hydrologic and hydraulic modelling, probable maximum discharges as well as climate scenarios. However, most of these methods assume stationarity of the used time series, i.e., the series must not exhibit trends. Against the background of climate change and proven significant trends in atmospheric circulation patterns, it is questionable whether these changes are also reflected in the discharge data. The aim of this PhD thesis is therefore to clarify, in a spatially-explicit manner, whether the available discharge data derived from selected German catchments exhibit trends. Concerning the flood hazard, the suitability of the currently used stationary FFA approaches is evaluated for the discharge data. Moreover, dynamics in atmospheric circulation patterns are studied and the link between trends in these patterns and discharges is investigated. To tackle this research topic, a number of different analyses are conducted. The first part of the PhD thesis comprises the study and trend test of 145 discharge series from catchments, which cover most of Germany for the period 1951-2002. The seasonality and trend pattern of eight flood indicators, such as maximum series and peak-over-threshold series, are analyzed in a spatially-explicit manner. Analyses are performed on different spatial scales: at the local scale, through gauge-specific analyses, and on the catchment-wide and basin scales. Besides the analysis of discharge series, data on atmospheric circulation patterns (CP) are an important source of information, upon which conclusions about the flood hazard can be drawn. The analyses of these circulation patterns (after Hess und Brezowsky) and the study of the link to peak discharges form the second part of the thesis. For this, daily data on the dominant CP across Europe are studied; these are represented by different indicators, which are tested for trend. Moreover, analyses are performed to extract flood triggering circulation patterns and to estimate the flood potential of CPs. Correlations between discharge series and CP indicators are calculated to assess a possible link between them. For this research topic, data from 122 meso-scale catchments in the period 1951-2002 are used. In a third part, the Mulde catchment, a mesoscale sub-catchment of the Elbe basin, is studied in more detail. Fifteen discharge series of different lengths in the period 1910-2002 are available for the seasonally differentiated analysis of the flood potential of CPs and flood influencing landscape parameters. For trend tests of discharge and CP data, different methods are used. The Mann-Kendall test is applied with a significance level of 10\%, ensuring statistically sound results. Besides the test of the entire series for trend, multiple time-varying trend tests are performed with the help of a resampling approach in order to better differentiate short-term fluctuations from long-lasting trends. Calculations of the field significance complement the flood hazard assessment for the studied regions. The present thesis shows that the flood hazard is indeed significantly increasing for selected regions in Germany during the winter season. Especially affected are the middle mountain ranges in Central Germany. This increase of the flood hazard is attributed to a longer persistence of selected CPs during winter. Increasing trends in summer floods are found in the Rhine and Danube catchments, decreasing trends in the Elbe and Weser catchments. Finally, a significant trend towards a reduced diversity of CPs is found causing fewer patterns with longer persistence to dominate the weather over Europe. The detailed study of the Mulde catchment reveals a flood regime with frequent low winter floods and fewer summer floods, which bear, however, the potential of becoming extreme. Based on the results, the use of instationary approaches for flood hazard estimation is recommended in order to account for the detected trends in many of the series. Through this methodology it is possible to directly consider temporal changes in flood series, which in turn reduces the possibility of large under- or overestimations of the extreme discharges, respectively.}, language = {en} } @inproceedings{LopezTarazonBronstertThiekenetal.2017, author = {L{\´o}pez-Taraz{\´o}n, Jos{\´e} Andr{\´e}s and Bronstert, Axel and Thieken, Annegret and Petrow, Theresia}, title = {International symposium on the effects of global change on floods, fluvial geomorphology and related hazards in mountainous rivers}, series = {Book of Abstracts}, booktitle = {Book of Abstracts}, editor = {L{\´o}pez-Taraz{\´o}n, Jos{\´e} Andr{\´e}s and Bronstert, Axel and Thieken, Annegret and Petrow, Theresia}, organization = {Universit{\"a}t Potsdam}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-396922}, pages = {104}, year = {2017}, abstract = {Both Alpine and Mediterranean areas are considered sensitive to so-called global change, considered as the combination of climate and land use changes. All panels on climate evolution predict future scenarios of increasing frequency and magnitude of floods which are likely to lead to huge geomorphic adjustments of river channels so major metamorphosis of fluvial systems is expected as a result of global change. Such pressures are likely to give rise to major ecological and economic changes and challenges that governments need to address as a matter of priority. Changes in river flow regimes associated with global change are therefore ushering in a new era, where there is a critical need to evaluate hydro-geomorphological hazards from headwaters to lowland areas (flooding can be not just a problem related to being under the water). A key question is how our understanding of these hazards associated with global change can be improved; improvement has to come from integrated research which includes the climatological and physical conditions that could influence the hydrology and sediment generation and hence the conveyance of water and sediments (including the river's capacity, i.e. amount of sediment, and competence, i.e. channel deformation) and the vulnerabilities and economic repercussions of changing hydrological hazards (including the evaluation of the hydro-geomorphological risks too). Within this framework, the purpose of this international symposium is to bring together researchers from several disciplines as hydrology, fluvial geomorphology, hydraulic engineering, environmental science, geography, economy (and any other related discipline) to discuss the effects of global change over the river system in relation with floods. The symposium is organized by means of invited talks given by prominent experts, oral lectures, poster sessions and discussion sessions for each individual topic; it will try to improve our understanding of how rivers are likely to evolve as a result of global change and hence address the associated hazards of that fluvial environmental change concerning flooding. Four main topics are going to be addressed: - Modelling global change (i.e. climate and land-use) at relevant spatial (regional, local) and temporal (from the long-term to the single-event) scales. - Measuring and modelling river floods from the hydrological, sediment transport (both suspended and bedload) and channel morphology points of view at different spatial (from the catchment to the reach) and temporal (from the long-term to the single-event) scales. - Evaluation and assessment of current and future river flooding hazards and risks in a global change perspective. - Catchment management to face river floods in a changing world. We are very pleased to welcome you to Potsdam. We hope you will enjoy your participation at the International Symposium on the Effects of Global Change on Floods, Fluvial Geomorphology and Related Hazards in Mountainous Rivers and have an exciting and profitable experience. Finally, we would like to thank all speakers, participants, supporters, and sponsors for their contributions that for sure will make of this event a very remarkable and fruitful meeting. We acknowledge the valuable support of the European Commission (Marie Curie Intra-European Fellowship, Project ''Floodhazards'', PIEF-GA-2013-622468, Seventh EU Framework Programme) and the Deutschen Forschungsgemeinschaft (Research Training Group "Natural Hazards and Risks in a Changing World" (NatRiskChange; GRK 2043/1) as the symposium would not have been possible without their help. Without your cooperation, this symposium would not be either possible or successful.}, language = {en} } @misc{LopezTarazonBronstertThiekenetal.2019, author = {Lopez Tarazon, Jos{\´e} Andr{\´e}s and Bronstert, Axel and Thieken, Annegret and Petrow, Theresia}, title = {The effects of global change on floods, fluvial geomorphology and related hazards in mountainous rivers}, series = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man}, volume = {669}, journal = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0048-9697}, doi = {10.1016/j.scitotenv.2019.03.026}, pages = {7 -- 10}, year = {2019}, language = {en} } @article{KocPetrowThieken2020, author = {Ko{\c{c}}, Gamze and Petrow, Theresia and Thieken, Annegret}, title = {Analysis of the Most Severe Flood Events in Turkey (1960-2014)}, series = {Water}, volume = {12}, journal = {Water}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {2073-4441}, doi = {10.3390/w12061562}, pages = {32}, year = {2020}, abstract = {The most severe flood events in Turkey were determined for the period 1960-2014 by considering the number of fatalities, the number of affected people, and the total economic losses as indicators. The potential triggering mechanisms (i.e., atmospheric circulations and precipitation amounts) and aggravating pathways (i.e., topographic features, catchment size, land use types, and soil properties) of these 25 events were analyzed. On this basis, a new approach was developed to identify the main influencing factor per event and to provide additional information for determining the dominant flood occurrence pathways for severe floods. The events were then classified through hierarchical cluster analysis. As a result, six different clusters were found and characterized. Cluster 1 comprised flood events that were mainly influenced by drainage characteristics (e.g., catchment size and shape); Cluster 2 comprised events aggravated predominantly by urbanization; steep topography was identified to be the dominant factor for Cluster 3; extreme rainfall was determined as the main triggering factor for Cluster 4; saturated soil conditions were found to be the dominant factor for Cluster 5; and orographic effects of mountain ranges characterized Cluster 6. This study determined pathway patterns of the severe floods in Turkey with regard to their main causal or aggravating mechanisms. Accordingly, geomorphological properties are of major importance in large catchments in eastern and northeastern Anatolia. In addition, in small catchments, the share of urbanized area seems to be an important factor for the extent of flood impacts. This paper presents an outcome that could be used for future urban planning and flood risk prevention studies to understand the flood mechanisms in different regions of Turkey.}, language = {en} } @misc{KocPetrowThieken2020, author = {Ko{\c{c}}, Gamze and Petrow, Theresia and Thieken, Annegret}, title = {Analysis of the Most Severe Flood Events in Turkey (1960-2014)}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe}, number = {1003}, doi = {10.25932/publishup-47733}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-477331}, pages = {34}, year = {2020}, abstract = {The most severe flood events in Turkey were determined for the period 1960-2014 by considering the number of fatalities, the number of affected people, and the total economic losses as indicators. The potential triggering mechanisms (i.e., atmospheric circulations and precipitation amounts) and aggravating pathways (i.e., topographic features, catchment size, land use types, and soil properties) of these 25 events were analyzed. On this basis, a new approach was developed to identify the main influencing factor per event and to provide additional information for determining the dominant flood occurrence pathways for severe floods. The events were then classified through hierarchical cluster analysis. As a result, six different clusters were found and characterized. Cluster 1 comprised flood events that were mainly influenced by drainage characteristics (e.g., catchment size and shape); Cluster 2 comprised events aggravated predominantly by urbanization; steep topography was identified to be the dominant factor for Cluster 3; extreme rainfall was determined as the main triggering factor for Cluster 4; saturated soil conditions were found to be the dominant factor for Cluster 5; and orographic effects of mountain ranges characterized Cluster 6. This study determined pathway patterns of the severe floods in Turkey with regard to their main causal or aggravating mechanisms. Accordingly, geomorphological properties are of major importance in large catchments in eastern and northeastern Anatolia. In addition, in small catchments, the share of urbanized area seems to be an important factor for the extent of flood impacts. This paper presents an outcome that could be used for future urban planning and flood risk prevention studies to understand the flood mechanisms in different regions of Turkey.}, language = {en} } @article{KocPetrowThieken2020, author = {Koc, Gamze and Petrow, Theresia and Thieken, Annegret}, title = {Analysis of the most severe flood events in Turkey (1960-2014)}, series = {Water / Molecular Diversity Preservation International (MDPI)}, volume = {12}, journal = {Water / Molecular Diversity Preservation International (MDPI)}, number = {6}, publisher = {MDPI}, address = {Basel}, issn = {2073-4441}, doi = {10.3390/w12061562}, pages = {32}, year = {2020}, abstract = {The most severe flood events in Turkey were determined for the period 1960-2014 by considering the number of fatalities, the number of affected people, and the total economic losses as indicators. The potential triggering mechanisms (i.e., atmospheric circulations and precipitation amounts) and aggravating pathways (i.e., topographic features, catchment size, land use types, and soil properties) of these 25 events were analyzed. On this basis, a new approach was developed to identify the main influencing factor per event and to provide additional information for determining the dominant flood occurrence pathways for severe floods. The events were then classified through hierarchical cluster analysis. As a result, six different clusters were found and characterized. Cluster 1 comprised flood events that were mainly influenced by drainage characteristics (e.g., catchment size and shape); Cluster 2 comprised events aggravated predominantly by urbanization; steep topography was identified to be the dominant factor for Cluster 3; extreme rainfall was determined as the main triggering factor for Cluster 4; saturated soil conditions were found to be the dominant factor for Cluster 5; and orographic effects of mountain ranges characterized Cluster 6. This study determined pathway patterns of the severe floods in Turkey with regard to their main causal or aggravating mechanisms. Accordingly, geomorphological properties are of major importance in large catchments in eastern and northeastern Anatolia. In addition, in small catchments, the share of urbanized area seems to be an important factor for the extent of flood impacts. This paper presents an outcome that could be used for future urban planning and flood risk prevention studies to understand the flood mechanisms in different regions of Turkey.}, language = {en} } @techreport{BerghaeuserSchoppaUlrichetal.2021, author = {Bergh{\"a}user, Lisa and Schoppa, Lukas and Ulrich, Jana and Dillenardt, Lisa and Jurado, Oscar E. and Passow, Christian and Samprogna Mohor, Guilherme and Seleem, Omar and Petrow, Theresia and Thieken, Annegret}, title = {Starkregen in Berlin}, doi = {10.25932/publishup-50056}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-500560}, pages = {44}, year = {2021}, abstract = {In den Sommern der Jahre 2017 und 2019 kam es in Berlin an mehreren Orten zu {\"U}berschwemmungen in Folge von Starkregenereignissen. In beiden Jahren f{\"u}hrte dies zu erheblichen Beeintr{\"a}chtigungen im Alltag der Berliner:innen sowie zu hohen Sachsch{\"a}den. Eine interdisziplin{\"a}re Taskforce des DFG-Graduiertenkollegs NatRiskChange untersuchte (1) die meteorologischen Eigenschaften zweier besonders eindr{\"u}cklicher Unwetter, sowie (2) die Vulnerabilit{\"a}t der Berliner Bev{\"o}lkerung gegen{\"u}ber Starkregen. Eine vergleichende meteorologische Rekonstruktion der Starkregenereignisse von 2017 und 2019 ergab deutliche Unterschiede in der Entstehung und den {\"U}berschreitungswahrscheinlichkeiten der beiden Unwetter. So war das Ereignis von 2017 mit einer relativ großen r{\"a}umlichen Ausdehnung und langer Dauer ein untypisches Starkregenereignis, w{\"a}hrend es sich bei dem Unwetter von 2019 um ein typisches, kurzzeitiges Starkregenereignis mit ausgepr{\"a}gter r{\"a}umlicher Heterogenit{\"a}t handelte. Eine anschließende statistische Analyse zeigte, dass das Ereignis von 2017 f{\"u}r l{\"a}ngere Niederschlagsdauern (>=24 h) als großfl{\"a}chiges Extremereignis mit {\"U}berschreitungswahrscheinlichkeiten von unter 1 \% einzuordnen ist (d.h. Wiederkehrperioden >=100 Jahre). Im Jahr 2019 wurden dagegen {\"a}hnliche {\"U}berschreitungswahrscheinlichkeiten nur lokal und f{\"u}r k{\"u}rzere Zeitr{\"a}ume (1-2 h) berechnet. Die Vulnerabilit{\"a}tsanalyse basiert auf einer von April bis Juni 2020 in Berlin durchgef{\"u}hrten Onlinebefragung. Diese richtete sich an Personen, die bereits von vergangenen Starkregenereignissen betroffen waren und thematisierte das Schadensereignis selbst, daraus entstandene Beeintr{\"a}chtigungen und Sch{\"a}den, Risikowahrnehmung sowie Notfall- und Vorsorgemaßnahmen. Die erhobenen Umfragedaten (n=102) beziehen sich vornehmlich auf die Ereignisse von 2017 und 2019 und zeigen, dass die Berliner Bev{\"o}lkerung sowohl im Alltag (z.B. bei der Beschaffung von Lebensmitteln) als auch im eigenen Haushalt (z.B. durch {\"U}berschwemmungssch{\"a}den) von den Unwettern beeintr{\"a}chtigt war. Zudem deuteten die Antworten der Betroffenen auf M{\"o}glichkeiten hin, die Vulnerabilit{\"a}t der Gesellschaft gegen{\"u}ber Starkregen weiter zu reduzieren - etwa durch die Unterst{\"u}tzung besonders betroffener Gruppen (z.B. Pflegende), durch gezielte Informationskampagnen zum Schutz vor Starkregen oder durch die Erh{\"o}hung der Reichweite von Unwetterwarnungen. Eine statistische Analyse zur Effektivit{\"a}t privater Notfall- und Vorsorgemaßnahmen auf Grundlage der Umfragedaten best{\"a}tigte vorherige Studienergebnisse. So gab es Anhaltspunkte daf{\"u}r, dass durch das Umsetzen von Vorsorgemaßnahmen wie beispielsweise das Installieren von R{\"u}ckstauklappen, Barriere-Systemen oder Pumpen Starkregensch{\"a}den reduziert werden k{\"o}nnen. Die Ergebnisse dieses Berichts unterstreichen die Notwendigkeit f{\"u}r ein integriertes Starkregenrisikomanagment, das die Risikokomponenten Gef{\"a}hrdung, Vulnerabilit{\"a}t und Exposition ganzheitlich und auf mehreren Ebenen (z.B. staatlich, kommunal, privat) betrachtet.}, language = {de} }