Differences in flood hazard projections in Europe – their causes and consequences for decision making

ABSTRACT This paper interprets differences in flood hazard projections over Europe and identifies likely sources of discrepancy. Further, it discusses potential implications of these differences for flood risk reduction and adaptation to climate change. The discrepancy in flood hazard projections raises caution, especially among decision makers in charge of water resources management, flood risk reduction, and climate change adaptation at regional to local scales. Because it is naïve to expect availability of trustworthy quantitative projections of future flood hazard, in order to reduce flood risk one should focus attention on mapping of current and future risks and vulnerability hotspots and improve the situation there. Although an intercomparison of flood hazard projections is done in this paper and differences are identified and interpreted, it does not seems possible to recommend which large-scale studies may be considered most credible in particular areas of Europe. EDITOR D. Koutsoyiannis ASSOCIATE EDITOR not assigned

[1]  P. Driessen,et al.  Prepared for climate change? A method for the ex-ante assessment of formal responsibilities for climate adaptation in specific sectors , 2016, Regional Environmental Change.

[2]  K. Beven,et al.  The seventh facet of uncertainty: wrong assumptions, unknowns and surprises in the dynamics of human–water systems , 2016 .

[3]  Giuliano Di Baldassarre,et al.  Increasing flood risk under climate change: a pan-European assessment of the benefits of four adaptation strategies , 2016, Climatic Change.

[4]  M. Pettersson,et al.  A view on more resilient flood risk governance : key conclusions of the STAR-FLOOD project , 2016 .

[5]  F. Ludwig,et al.  Projections of future floods and hydrological droughts in Europe under a +2°C global warming , 2016, Climatic Change.

[6]  Paul S. Fischbeck,et al.  Increasing the Value of Uncertain Weather and River Forecasts for Emergency Managers , 2016 .

[7]  N. Arnell,et al.  The impacts of climate change on river flood risk at the global scale , 2016, Climatic Change.

[8]  S. Seneviratne,et al.  Comparing IPCC assessments: how do the AR4 and SREX assessments of changes in extremes differ? , 2015, Climatic Change.

[9]  Michael D. Dettinger,et al.  On Critiques of “Stationarity is Dead: Whither Water Management?” , 2015 .

[10]  Bruno Merz,et al.  Charting unknown waters—On the role of surprise in flood risk assessment and management , 2015 .

[11]  K. Trenberth,et al.  Attribution of climate extreme events , 2015 .

[12]  P. Claps,et al.  A European Flood Database: facilitating comprehensive flood research beyond administrative boundaries , 2015 .

[13]  Demetris Koutsoyiannis,et al.  Negligent killing of scientific concepts: the stationarity case , 2015 .

[14]  D. Hannah,et al.  Future hydrological extremes: The uncertainty from multiple global climate and global hydrological models , 2015 .

[15]  L. Feyen,et al.  Global warming increases the frequency of river floods in Europe , 2015 .

[16]  Günter Blöschl,et al.  Dependence between flood peaks and volumes: a case study on climate and hydrological controls , 2015 .

[17]  Dim Coumou,et al.  Increased record-breaking precipitation events under global warming , 2015, Climatic Change.

[18]  Z. Kundzewicz,et al.  Modelling climate and land-use change impacts with SWIM: lessons learnt from multiple applications , 2015 .

[19]  H. Kreibich,et al.  Adaptive flood risk management planning based on a comprehensive flood risk conceptualisation , 2015, Mitigation and Adaptation Strategies for Global Change.

[20]  B. Jiménez-Cisneros,et al.  Integrating risks of climate change into water management , 2015 .

[21]  M. Büchner,et al.  Modelling flood damages under climate change conditions – a case study for Germany , 2014 .

[22]  Michel Lang,et al.  Review of trend analysis and climate change projections of extreme precipitation and floods in Europe , 2014 .

[23]  Bruno Merz,et al.  Floods and climate: emerging perspectives for flood risk assessment and management , 2014 .

[24]  G. T. Raadgever,et al.  Assessing Stability and Dynamics in Flood Risk Governance , 2014, Water Resources Management.

[25]  R. Muir-Wood,et al.  Flood risk and climate change: global and regional perspectives , 2014 .

[26]  G. Blöschl,et al.  The June 2013 flood in the Upper Danube Basin, and comparisons with the 2002, 1954 and 1899 floods , 2013 .

[27]  Michel Lang,et al.  Understanding Flood Regime Changes in Europe: A state of the art assessment , 2013 .

[28]  Hyungjun Kim,et al.  First look at changes in flood hazard in the Inter-Sectoral Impact Model Intercomparison Project ensemble , 2013, Proceedings of the National Academy of Sciences.

[29]  Felipe J. Colón-González,et al.  Multimodel assessment of water scarcity under climate change , 2013, Proceedings of the National Academy of Sciences.

[30]  T. Stacke,et al.  Multimodel projections and uncertainties of irrigation water demand under climate change , 2013 .

[31]  S. Kanae,et al.  Global flood risk under climate change , 2013 .

[32]  Zbigniew W. Kundzewicz,et al.  Large floods in Europe, 1985–2009 , 2013 .

[33]  Ralf Ludwig,et al.  Integration of research advances in modelling and monitoring in support of WFD river basin management planning in the context of climate change. , 2012, The Science of the total environment.

[34]  S. Hagemann,et al.  Climate change impact on available water resources obtained using multiple global climate and hydrology models , 2012 .

[35]  Luc Feyen,et al.  Correction to “Assessment of future flood hazard in Europe using a large ensemble of bias‐corrected regional climate simulations” , 2012 .

[36]  Z. Kundzewicz.  Changes in Flood Risk in Europe , 2012 .

[37]  A. Kay,et al.  Transient changes in flood frequency and timing in Britain under potential projections of climate change , 2012 .

[38]  Robert M. Hirsch,et al.  Has the magnitude of floods across the USA changed with global CO2 levels? , 2012 .

[39]  Demetris Koutsoyiannis,et al.  Scientific dialogue on climate: is it giving black eyes or opening closed eyes? Reply to “A black eye for the Hydrological Sciences Journal” by D. Huard , 2011 .

[40]  Luc Feyen,et al.  Improving pan-European hydrological simulation of extreme events through statistical bias correction of RCM-driven climate simulations , 2011 .

[41]  K. Calvin,et al.  The RCP greenhouse gas concentrations and their extensions from 1765 to 2300 , 2011 .

[42]  Keith Beven,et al.  I believe in climate change but how precautionary do we need to be in planning for the future? , 2011 .

[43]  P. Stott,et al.  Anthropogenic greenhouse gas contribution to flood risk in England and Wales in autumn 2000 , 2011, Nature.

[44]  Günter Blöschl,et al.  Time stability of catchment model parameters: Implications for climate impact analyses , 2011 .

[45]  Günter Blöschl,et al.  Barriers to the exchange of hydrometeorological data in Europe: Results from a survey and implications for data policy , 2010 .

[46]  Günter Blöschl,et al.  Flood fatalities in Africa: From diagnosis to mitigation , 2010 .

[47]  E. Stakhiv,et al.  Are climate models “ready for prime time” in water resources management applications, or is more research needed? , 2010 .

[48]  Demetris Koutsoyiannis,et al.  A comparison of local and aggregated climate model outputs with observed data , 2010 .

[49]  Suraje Dessai,et al.  Robust adaptation to climate change , 2010 .

[50]  Reto Knutti,et al.  Challenges in Combining Projections from Multiple Climate Models , 2010 .

[51]  P. Döll,et al.  Assessing river flood risk and adaptation in Europe—review of projections for the future , 2010 .

[52]  John F. B. Mitchell,et al.  The next generation of scenarios for climate change research and assessment , 2010, Nature.

[53]  A. Brath,et al.  Analysis of the effects of levee heightening on flood propagation: example of the River Po, Italy , 2009 .

[54]  Florian Pappenberger,et al.  Ensemble flood forecasting: a review. , 2009 .

[55]  L. Feyen,et al.  Flood hazard in Europe in an ensemble of regional climate scenarios , 2009 .

[56]  Demetris Koutsoyiannis,et al.  Climate, hydrology and freshwater: towards an interactive incorporation of hydrological experience into climate research , 2009 .

[57]  Günter Blöschl,et al.  A compilation of data on European flash floods , 2009 .

[58]  Luc Feyen,et al.  Climate change impact on flood hazard in Europe: An assessment based on high-resolution climate simulations , 2008 .

[59]  Taikan Oki,et al.  Global projections of changing risks of floods and droughts in a changing climate , 2008 .

[60]  R. Stouffer,et al.  Stationarity Is Dead: Whither Water Management? , 2008, Science.

[61]  Petra Döll,et al.  Estimating the Impact of Global Change on Flood and Drought Risks in Europe: A Continental, Integrated Analysis , 2006 .

[62]  Q. Schiermeier.  Analysis pours cold water on flood theory , 2003, Nature.

[63]  M. Mudelsee,et al.  No upward trends in the occurrence of extreme floods in central Europe , 2003, Nature.

[64]  Alexei G. Sankovski,et al.  Special report on emissions scenarios , 2000 .

[65]  P. Driessen,et al.  Boundary organisations and their strategies : Three cases in the Wadden Sea , 2016 .

[66]  Stewart J. Cohen,et al.  Climate Change 2014: Impacts,Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change , 2014 .

[67]  Daniela JacobJuliane,et al.  EURO-CORDEX: new high-resolution climate change projections for European impact research , 2013 .

[68]  T. Stocker,et al.  Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation. A Special Report of Working Groups I and II of IPCC Intergovernmental Panel on Climate Change , 2012 .

[69]  C. Field.  Managing the risks of extreme events and disasters to advance climate change adaption , 2012 .

[70]  Carel Dieperink,et al.  Uncertainty management strategies: Lessons from the regional implementation of the Water Framework Directive in the Netherlands , 2011 .

[71]  P. Linden,et al.  ENSEMBLES: Climate Change and its Impacts - Summary of research and results from the ENSEMBLES project , 2009 .

[72]  P. Quevauviller.  Water system science and policy interfacing. , 2009 .