An Index-Based Approach to Assess Social Vulnerability for Hamburg, Germany

Abstract

In this study, we set out to develop a new social vulnerability index (SVI). In doing so, we suggest some conceptual improvements that can be made to existing methodical approaches to assessing social vulnerability. To make the entanglement of socio-spatial inequalities visible, we are conducting a small-scale study on heterogeneous urban development in the city of Hamburg, Germany. This kind of high-resolution analysis was not previously available, but is increasingly requested by political decision makers. We can thus show hot spots of social vulnerability (SV) in Hamburg, considering the effects of social welfare, education, and age. In doing so, we defined SV as a contextual concept that follows the recent shift in discourse in line with the Intergovernmental Panel on Climate Change’s (IPCC) concepts of risk and vulnerability. Our SVI consists of two subcomponents: sensitivity and coping capacity. Populated areas of Hamburg were identified using satellite information and merged with the social data units of the city. Areas with high SVI are distributed over the entire city, notably in the district of Harburg and the Reiherstieg quarter in Wilhelmsburg near the Elbe, as well as in the densely populated inner city areas of Eimsbüttel and St. Pauli. As a map at a detailed scale, our SVI can be a useful tool to identify areas where the population is most vulnerable to climate-related hazards. We conclude that an enhanced understanding of urban social vulnerability is a prerequisite for urban risk management and urban resilience planning.

Keywords

Climate change adaptation / Hamburg / Risk approach / Social vulnerability / Social vulnerability index

References

[1] Abebe YA, Ghorbani A, Nikolic I, Manojlovic N, Gruhn A, Vojinovic Z. The role of household adaptation measures in reducing vulnerability to flooding: A coupled agent-based and flood modelling approach. Hydrology and Earth System Sciences, 2020, 24(11): 5329-5354

[2] Balica S, Wright NG. Reducing the complexity of the flood vulnerability index. Environmental Hazards, 2010, 9(4): 321-339

[3] Beckers T, Birkelbach K, Hagenah J, Rosar U. Comparative empirical social research (Komparative empirische Sozialforschung), 2010, Wiesbaden: VS Verlag für Sozialwissenschaften in German)

[4] Blaikie P, Cannon T, Davis I, Wisner B. At risk: Natural hazards, people’s vulnerability, and disasters, 1994, London: Routledge

[5] Bouwer, L. 2020. Climate risk information: An essential service for planning. Geesthacht, Germany: Climate Service Center Germany. https://publications.hereon.de/id/39938/. Accessed 13 Oct 2023.

[6] Bullard, R.D. 2001. Environmental justice in the 21st Century. https://uwosh.edu/sirt/wp-content/uploads/sites/86/2017/08/Bullard_Environmental-Justice-in-the-21st-Century.pdf. Accessed 13 Oct 2023.

[7] Cardona OD, van Aalst MK, Birkmann J, Fordham M, McGregor G, Perez R, Pulwarty RS, Schipper ELF, Sinh BT. Field CB. Determinants of risk: Exposure and vulnerability. Managing the risks of extreme events and disasters to advance climate change adaptation: Special report of the Intergovernmental Panel on Climate Change, 2012, Cambridge: Cambridge University Press 65-108

[8] Cook IR, Swyngedouw E. Cities, social cohesion and the environment: Towards a future research agenda. Urban Studies, 2012, 49(9): 1959-1979

[9] Cutter SL, Boruff BJ, Shirley WL. Social vulnerability to environmental hazards. Social Science Quarterly, 2003, 84(2): 242-261

[10] Dapp, U., C.E. Minder, J. Anders, S. Golgert, and W. von Renteln-Kruse. 2014. Long-term prediction of changes in health status, frailty, nursing care and mortality in community-dwelling senior citizens – Results from the longitudinal urban cohort ageing study (LUCAS). BMC Geriatrics 14: Article 141.

[11] Davino C, Gherghi M, Sorana S, Vistocco D. Measuring social vulnerability in an urban space through multivariate methods and models. Social Indicators Research, 2021, 157(3): 1179-1201

[12] Dodman, D., B. Hayward, M. Pelling, V. Castan Broto, W. Chow, E. Chu, R. Dawson, L. Khirfan, et al. 2022. Cities, settlements and key infrastructure. In Climate change 2022: Impacts, adaptation and vulnerability. Contribution of Working Group II to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, ed. H.-O. Pörtner, D.C. Roberts, M. Tignor, E.S. Poloczanska, K. Mintenbeck, A. Alegría, M. Craig, S. Langsdorf, et al., 907–1040. Cambridge, UK: Cambridge University Press.

[13] Drakes, O., and E. Tate. 2022. Social vulnerability in a multi-hazard context: A systematic review. Environmental Research Letters 17(3): Article 33001.

[14] Driessen, P., D. Hegger, Z. Kundzewicz, H. van Rijswick, A. Crabbé, C. Larrue, P. Matczak, M. Pettersson, et al. 2018. Governance strategies for improving flood resilience in the face of climate change. Water 10(11). https://doi.org/10.3390/w10111595.

[15] EEA (European Environment Agency). 2019. Environmental justice, environmental hazards and the vulnerable in European society (briefing). https://www.eea.europa.eu/publications/unequal-exposure-and-unequal-impacts/environmental-justice-environmental-hazards-and/view. Accessed 14 Oct 2023.

[16] Faist T. The socio-natural question: How climate change adds to social inequalities. Journal of Intercultural Studies, 2018, 39(2): 195-206

[17] Fekete A. Validation of a social vulnerability index in context to river-floods in Germany. Natural Hazards and Earth System Sciences, 2009, 9(2): 393-403

[18] Flanagan, B.E., E.W. Gregory, E.J. Hallisey, J.L. Heitgerd, and B. Lewis. 2011. A social vulnerability index for disaster management. Journal of Homeland Security and Emergency Management 8(1). https://doi.org/10.2202/1547-7355.1792.

[19] Forman EH, Gass SI. The analytic hierarchy process – An exposition. Operations Research, 2001, 49(4): 469-486

[20] Foster S, Leichenko R, Nguyen KH, Blake R, Kunreuther H, Madajewicz M, Petkova EP, Zimmerman R New York City Panel on Climate Change 2019 report chapter 6: Community-based assessments of adaptation and equity. Annals of the New York Academy of Sciences, 2019, 1439(1): 126-173

[21] Freie und Hansestadt Hamburg, Behörde für Bau und Verkehr. 2003. 50 years of land management in Hamburg: Area management through land consolidation and border regulation (50 Jahre Bodenordnung in Hamburg: Flächenmanagement Durch Umlegung Und Grenzregelung). https://epub.sub.uni-hamburg.de/epub/volltexte/2009/3689/pdf/bodenordnung_in_hamburg%20_50_jahre_broschuere.pdf. Accessed 13 Oct 2023 (in German).

[22] Freie und Hansestadt Hamburg, Behörde für Gesundheit und Verbraucherschutz. 2019. Report on the demographic concept Hamburg 2030 (Bericht Zum Demographiekonzept Hamburg 2030). https://www.hamburg.de/contentblob/12032286/0880e17d6ef77aab152751b988daf47f/data/download-fortschreibung-demografiekonzept-hamburg2030.pdf. Accessed 13 Oct 2023 (in German).

[23] Freie und Hansestadt Hamburg, Behörde für Stadtentwicklung und Umwelt. 2004. Development perspectives for Reiherstieg and Spreehafen. Leap across the Elbe – Urban renewal in the west (Entwicklungsperspektiven Reiherstieg Und Spreehafen. Sprung über die Elbe – Stadtumbau West). https://zukunft-elbinsel.de/wp-content/uploads/2013/08/2004-duesterhoeft_entwicklungsperspektivenreiherstieg-spreehafen.pdf. Accessed 13 Oct 2023 (in German).

[24] Freie und Hansestadt Hamburg, Behörde für Stadtentwicklung und Wohnen (ed.). 2021. Social monitoring and integrated urban development: Report 2021 (Sozialmonitoring Integrierte Stadtenteicklung: Bericht 2021). https://www.hamburg.de/contentblob/15711330/727d2c0115b88daaa3514f87297932cb/data/d-sozialmonitoring-bericht-2021.pdf. Accessed 13 Oct 2023 (in German).

[25] Freie und Hansestadt Hamburg, Behörde für Umwelt, Klima, Energie und Agrarwirtschaft. 2020. Accompanying text for flood hazard and flood risk maps for Hamburg (Begleittext Hochwassergefahren- Und Hochwasserrisikokarten Für Hamburg). https://www.hamburg.de/contentblob/13535832/49ff87c5193544555c671b8748125c5a/data/d-hh-begleittext-gefahrenrisikokarten-jan2020.pdf. Accessed 13 Oct 2023 (in German).

[26] Freie und Hansestadt Hamburg, Behörde für Umwelt, Klima, Energie und Agrarwirtschaft. 2021. Heavy rainfall alert map (Starkregenhinweiskarte). https://www.hamburg.de/starkregenhinweiskarte/. Accessed 13 Oct 2023 (in German).

[27] Füssel, H.-M. 2010. Review and quantitative analysis of indices of climate change exposure, adaptive capacity, sensitivity, and impacts. Washington, DC: World Bank. https://openknowledge.worldbank.org/bitstream/10986/9193/1/WDR2010_0004.pdf. Accessed 13 Oct 2023.

[28] GeoBasis-DE/BKG. 2018. CORINE Land Cover 5 Ha, Stand 2018 (CLC5-2018). http://gdz.bkg.bund.de/index.php/default/corine-land-cover-5-ha-stand-2018-clc5-2018.html. Accessed 13 Oct 2023.

[29] Glavovic, B.C., R. Dawson, W. Chow, M. Garschagen, M. Haasnoot, C. Singh, and A. Thomas. 2022. Cross-chapter paper 2: Cities and settlements by the sea. In Climate change 2022: Impacts, adaptation and vulnerability. Contribution of Working Group II to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, ed. H.-O. Pörtner, D.C. Roberts, M. Tignor, E.S. Poloczanska, K. Mintenbeck, A. Alegría, M. Craig, S. Langsdorf, et al., 2163–2194. Cambridge, UK: Cambridge University Press.

[30] Goepel, K.D. 2018. Implementation of an online software tool for the analytic hierarchy process (AHP-OS). International Journal of the Analytic Hierarchy Process 10(3). https://doi.org/10.13033/ijahp.v10i3.590.

[31] Grotlüschen, A., and K. Buddeberg. 2020. LEO 2018: Living with low literacy (LEO 2018: Leben mit geringer Literalität). Bielefeld: wbv (in German).

[32] Hanke, C. 2014. Hamburg’s street names tell history: With district walks, maps, photos, and … the latest streets (Hamburgs Straßennamen erzählen Geschichte: Mit Stadtteilrundgängen, Karten, Fotos und … den neuesten Straßen), 5th edn. Aufl. Hamburg: Medien-Verl. Schubert (in German).

[33] Holand, I.S., P. Lujala, and J.K. Rød. 2011. Social vulnerability assessment for Norway: A quantitative approach. Norsk Geografisk Tidsskrift – Norwegian Journal of Geography 65(1): 1–17.

[34] Islam, S.N., and J. Winkel. 2017. Climate change and social inequality working papers. United Nations Publications 152. New York: UN Department of Economic and Social Affairs (DESA).

[35] Joakim EP, Mortsch L, Oulahen G. Using vulnerability and resilience concepts to advance climate change adaptation. Environmental Hazards, 2015, 14(2): 137-155

[36] Jodoin, S., A. Buettgen, N. Groce, P. Gurung, C. Kaiser, M. Kett, M. Keogh, S.S. Macanawai, et al. 2023. Nothing about us without us: The urgent need for disability-inclusive climate research. PLOS Climate 2(3): Article e0000153.

[37] Jurgilevich, A., A. Räsänen, F. Groundstroem, and S. Juhola. 2017. A systematic review of dynamics in climate risk and vulnerability assessments. Environmental Research Letters 12(1): Article 013002.

[38] Kaiser HF. The varimax criterion for analytic rotation in factor analysis. Psychometrika, 1958, 23: 187-200

[39] Kaveckis, G. 2017. Modeling future population’s vulnerability to heat waves in Greater Hamburg. Ph.D. dissertation. Institute of Geographie, Universität Hamburg, Hamburg, Germany.

[40] Kienberger S, Lang S, Zeil P. Spatial vulnerability units – Expert-based spatial modelling of socio-economic vulnerability in the Salzach catchment, Austria. Natural Hazards and Earth System Sciences, 2009, 9(3): 767-778

[41] Kim, S.K., M.M. Bennett, T. van Gevelt, and P. Joosse. 2021. Urban agglomeration worsens spatial disparities in climate adaptation. Scientific Reports 11(1): Article 8446.

[42] Kosanic, A., J. Petzold, B. Martín-López, and M. Razanajatovo. 2022. An inclusive future: Disabled populations in the context of climate and environmental change. Current Opinion in Environmental Sustainability 55: Article 101159.

[43] Krieger K, Kuchenbecker A, Hüffmeyer N, Verworn H-R. Local effects of global climate change on the urban drainage system of Hamburg. Water Science and Technology, 2013, 68(5): 1107-1113

[44] Markert, M. 2008. The leap across the Elbe – Wilhelmsburg’s path to the center of the city (Der Sprung über die Elbe – Wilhelmsburgs Weg in die Mitte der Stadt). 191. Geschichtswerkstatt Wilhelmsburg & Hafen 2008 – Wilhelmsburg.

[45] Mason, D., A. Iida, S. Watanabe, L.P. Jackson, and M. Yokohari. 2020. How urbanization enhanced exposure to climate risks in the Pacific: A case study in the Republic of Palau. Environmental Research Letters 15(11): Article 114007.

[46] McCarthy, J.J., O.F. Canziani, N.A. Leary, D.J. Dokken, and K.S. White. 2001. Climate change 2001: Impacts, adaptation and vulnerability. Contribution of Working Group II to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK: Cambridge University Press.

[47] Mees HLP, Driessen PPJ, Runhaar HAC. Legitimate adaptive flood risk governance beyond the dikes: The cases of Hamburg. Helsinki and Rotterdam. Regional Environmental Change, 2014, 14(2): 671-682

[48] Nasiri H, Yusof MJM, Ali TAM, Hussein MKB. District flood vulnerability index: Urban decision-making tool. International Journal of Environmental Science and Technology, 2019, 16(5): 2249-2258

[49] Nguyen TT, Bonetti J, Rogers K, Woodroffe CD. Indicator-based assessment of climate-change impacts on coasts: A review of concepts, methodological approaches and vulnerability indices. Ocean & Coastal Management, 2016, 123: 18-43

[50] Paech, F. 2008. The whole stories of the people – The Hamburg flood of 1962 in the consciousness of the Wilhelmsburg population (Die ganzen menschlichen Geschichten – Die Hamburger Sturmflut von 1962 im Bewusstsein der Wilhelmsburger Bevölkerung). 161–173. https://content.e-bookshelf.de/media/reading/L-2812425-169e1ca58f.pdf. Accessed 13 Oct 2023.

[51] Pohl, T., and K. Wischmann. 2014. Housing market dynamics and urban political conflicts in Hamburg: A contribution to gentrification research (Wohnungsmarktdynamik und stadtpolitische Konflikte in Hamburg: ein Beitrag zur Gentrificationforschung). Mannheim. https://www.ssoar.info/ssoar/bitstream/handle/document/41134/ssoar-europareg-2014-2-pohl_et_al-Wohnungsmarktdynamik_und_stadtpolitische_Konflikte_in.pdf?sequence= 1&isAllowed=y&lnkname=ssoar-europareg-2014-2-pohl_et_al-Wohnungsmarktdynamik_und_stadtpolitische_Konflikte_in.pdf. Accessed 13 Oct 2023 (in German).

[52] Pohl T, Giesel F, Oßenbrügge J. Suburbia as a spatial trap? – Consequences of demographic and socio-spatial development in major cities using Hamburg as an example (Suburbia Als „Räumliche Falle“? – Folgen Der Demographischen Und Sozialräumlichen Entwicklung Von Großstädten Am Beispiel Hamburgs). Berichte zur Deutschen Landeskunde, 2010, 4: 329-348 (in German)

[53] Poschlod, B., and R. Ludwig. 2021. Internal variability and temperature scaling of future sub-daily rainfall return levels over Europe. Environmental Research Letters 16: Article 064097.

[54] Pratschke J, Morlicchio E. Social polarisation, the labour market and economic restructuring in Europe: An urban perspective. Urban Studies, 2012, 49(9): 1891-1907

[55] Preston, B., T.F. Smith, C. Brooke, R.J. Gorddard, T. Measham, G. Withycombe, B. Beveridge, C. Morrison, et al. 2008. Mapping climate change vulnerability in the Sydney coastal councils group. https://publications.csiro.au/rpr/download?pid=procite:0b6b33c4-90ca-453d-bf77-9480cd047047&dsid=DS1. Accessed 13 Oct 2023.

[56] Reckien D. What is in an index? Construction method, data metric, and weighting scheme determine the outcome of composite social vulnerability indices in New York City. Regional Environmental Change, 2018, 18(5): 1439-1451

[57] Reisinger, A., M. Howden, C. Vera, M. Garschagen, M. Hurlbert, S. Kreibiehl, K.J. Mach, K. Mintenbeck, et al. 2020. The concept of risk in the IPCC Sixth Assessment Report: A summary of cross-working group discussions. https://www.ipcc.ch/site/assets/uploads/2021/01/The-concept-of-risk-in-the-IPCC-Sixth-Assessment-Report.pdf. Accessed 13 Oct 2023.

[58] Rheinneckar Blog. 2021. 106 out of 135 flood victims in the Ahr Valley were over 60 years old: Statement by the Victim Commissioner of the state of Rhineland-Palatinate on the number of victims (106 Von 135 Opfern Der Flut Im Ahrtal Waren Über 60 Jahre Alt: Angaben Des Opferbeauftragten Des Landes Rheinland-Pfalz Zur Zahl Der Opfer). Rheinneckar Blog, 18 November 2021. https://rheinneckarblog.de/18/106-von-135-opfern-der-flut-im-ahrtal-waren-ueber-60-jahre-alt/162578.html. Accessed 13 Oct 2023 (in German).

[59] RND (Redaktionsnetzwerk Deutschland). 2021. Flood catastrophe in the Ahr Valley: 69 out of the 134 deaths came from Ahrweiler (Flutkatastrophe Im Ahrtal: 69 Der 134 Toten Stammten Aus Ahrweiler). Redaktions Netzwerk Deutschland, 18 November 2021. https://www.rnd.de/panorama/hochwasser-im-ahrtal-das-juengste-todesopfer-war-vier-jahre-alt-das-aelteste-97-T3FPN5OE76AAWKGLCY6EV5USSI.html. Accessed 8 Oct 2023 (in German).

[60] Sampson RJ, Morenoff JD, Gannon-Rowley T. Assessing “neighborhood effects”: Social processes and new directions in research. Annual Review of Sociology, 2002, 28(1): 443-478

[61] Schlömer, O., J. Giesel, and M. Lindinger. 2021. Déjà-Vu of the catastrophe (Déjà-Vu Der Katastrophe). Frankfurter Allgemeine Zeitung, 5 August 2021. https://www.faz.net/aktuell/gesellschaft/ungluecke/flutkatastrophe-im-ahrtal-neue-erkenntnisse-zum-hochwasser-17470847.html. Accessed 13 Oct 2023 (in German).

[62] Schröter K. Improved flood risk assessment, 2019, Habilitationsschrift: Mathematisch-Naturwissenschaftlichen Fakultät, Universität Potsdam, Germany

[63] Schubert, D. 2012. The Great Fire of Hamburg, 1842: From Catastrophe to Reform. In Flammable Cities: Urban Conflagration and the Making of the Modern World, ed. G. Bankoff, U. Lübken, and J. Sand. Madison, University of Wisconsin.

[64] Shi L, Chu E, Anguelovski I, Aylett A, Debats J, Goh K, Schenk T, Seto KC Roadmap towards justice in urban climate adaptation research. Nature Climate Change, 2016, 6(2): 131-137

[65] Simpson NP, Mach KJ, Constable A, Hess J, Hogarth R, Howden M, Lawrence J, Lempert RJ A framework for complex climate change risk assessment. One Earth, 2021, 4(4): 489-501

[66] Singer M. Climate change and social inequality: The health and social costs of global warming, 2018, London: Routledge

[67] Statistikamt Nord. 2017. Statistical areas in Hamburg (Statistische Gebiete in Hamburg). https://metaver.de/trefferanzeige?docuuid=DB93B23B-D3F1-4460-8C62-DD1961893767&plugid=/ingrid-group:ige-iplug-hmdk.metaver&docid=DB93B23B-D3F1-4460-8C62-DD1961893767. Accessed 7 Oct 2023 (in German).

[68] Statistikamt Nord. 2020. Customer file 2020 (Kundendatei 2020). Obtainable from the authors.

[69] Tammaru T. Socio-economic segregation in European capital cities, 2015, London: Routledge

[70] Tammaru T, Sinitsyna A, Akhavizadegan A, van Ham M, Marcińczak S, Musterd S. Pryce G, Wang YP, Chen Y, Shan J, Wei H. Income inequality and residential segregation in European cities. Urban inequality and segregation in Europe and China: Towards a new dialogue, 2021 1 Cham: Springer 39-54

[71] Tapsell, S.M., E.C. Penning-Rowsell, S.M. Tunstall, and T.L. Wilson. 2002. Vulnerability to flooding: Health and social dimensions. Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences 360(1796): 1511–1525.

[72] Tascón-González, L., M. Ferrer-Julià, M. Ruiz, and E. García-Meléndez. 2020. Social vulnerability assessment for flood risk analysis. Water 12(2): Article 558.

[73] Vogelpohl A. Läpple D, Mückenberger U, Oßenbrügge J. The reproduction of urban diversity (Die Reproduktion urbaner Vielfalt). Times and spaces of the city: Theory and practice (Zeiten und Räume der Stadt: Theorie und Praxis), 2010, Opladen, Farmington Hills, MI: Verlag Barbara Budrich 91-108 (in German)

[74] Zamzow B, Krahl A. Eckardt F, Meier S. Living in disadvantaged neighborhoods (Wohnen in benachteiligten Stadtteilen). Handbook of housing sociology (Handbuch Wohnsoziologie), 2020, Wiesbaden: Springer 313-325 (in German)