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Ernstson, Henrik, Dr.ORCID iD iconorcid.org/0000-0002-6415-4821
Publications (10 of 69) Show all publications
Paul, S., Reinardy, B. T. I., Ddumba Walakira, D., Bhattacharya, P., Ernstson, H. & Kalantari, Z. (2024). A shallow water numerical method for assessing impacts of hydrodynamics and nutrient transport processes on water quality values of Lake Victoria. Heliyon, 10(3), Article ID e25125.
Open this publication in new window or tab >>A shallow water numerical method for assessing impacts of hydrodynamics and nutrient transport processes on water quality values of Lake Victoria
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2024 (English)In: Heliyon, ISSN 2405-8440, Vol. 10, no 3, article id e25125Article in journal (Refereed) Published
Abstract [en]

Lake Victoria is the world’s largest tropical lake and the third-largest water body, providingsignificant water resources for surrounding environments including the cultural, societal, andlivelihood needs of people in its basin and along the White Nile. The aim of this study was to usedecade-long time series of measured lake flow in the lake system and phosphorus deposition todevelop a suitable numerical model based on shallow water equations (SWE) for assessing waterquality in Lake Victoria, an increasingly important tool under climate variation. Different tech-niques were combined to identify a numerical model that included: i) a high-resolution SWEmodel to establish raindrop diffusion to trace pollutants; ii) a two-dimensional (2D) verticallyintegrated SWE model to establish lake surface flow and vertically transported wind speed flowacting on lake surface water by wind stress; and iii) a site-specific phosphorus deposition sub-model to calculate atmospheric deposition in the lake. A smooth (non-oscillatory) solution wasobtained by applying a high-resolution scheme for a raindrop diffusion model. Analysis with thevertically integrated SWE model generated depth averages for flow velocity and associatedchanges in water level profile in the lake system and showed unidirectional whole lake windblowing from the southwest to northeast. The atmospheric phosphorous deposition modelenabled water value assessment for mass balances with different magnitudes of both inflows andoutflows demonstrating annual total phosphorus at 13, 500 tons concentrating at mid-lakewestern and eastern parts. The model developed here is simple and suitable for use in assess-ing flow changes and lake level changes and can serve as a tool in studies of lake bathymetry andnutrient and pollution transport processes. Our study opens towards refining models of complexshallow-water systems

Place, publisher, year, edition, pages
Elsevier BV, 2024
National Category
Natural Sciences Oceanography, Hydrology and Water Resources
Identifiers
urn:nbn:se:kth:diva-343123 (URN)10.1016/j.heliyon.2024.e25125 (DOI)001181646300001 ()2-s2.0-85183976949 (Scopus ID)
Funder
KTH Royal Institute of Technology
Note

QC 20240212

Available from: 2024-02-06 Created: 2024-02-06 Last updated: 2024-04-05Bibliographically approved
Cardoso, R., Chen, J. C. & Ernstson, H. (2023). BLOCOS URBANISM: Capitalism and Modularity in the Making of Contemporary Luanda. International Journal of Urban and Regional Research, 47(5), 809-832
Open this publication in new window or tab >>BLOCOS URBANISM: Capitalism and Modularity in the Making of Contemporary Luanda
2023 (English)In: International Journal of Urban and Regional Research, ISSN 0309-1317, E-ISSN 1468-2427, Vol. 47, no 5, p. 809-832Article in journal (Refereed) Published
Abstract [en]

In this article we portray and unpack the fabric of urban expansion in contemporary Luanda. In doing so, we examine interdependencies and complementarities between the organization of oil extraction off the coast of Angola, the emergence of particular modalities of modernist city planning for the expansion of its capital city, and the proliferation of cement blocks in the making of new urban forms throughout its burgeoning peripheries. By showing how urban development has unfolded through the interconnected realization of multiple kinds of systematizing blocks—namely oil blocks, city blocks and cement blocks—we analyse key material components in the production of new markets and urban spaces in the Angolan capital. By tracing forms of capitalism and modularity in the making of contemporary Luanda, we develop the concept of blocos urbanism to draw attention to modes of standardization and the production of legibility in contemporary processes of urbanization. Through this study, we aim to contribute to the conceptual apparatus for deciphering our global urban condition.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
Angola, autoconstruction, capitalism, cement, legibility, Luanda, modularity, oil, planning, standardization
National Category
Social Anthropology
Identifiers
urn:nbn:se:kth:diva-338497 (URN)10.1111/1468-2427.13199 (DOI)001060928100001 ()2-s2.0-85169681129 (Scopus ID)
Note

QC 20231115

Available from: 2023-11-15 Created: 2023-11-15 Last updated: 2023-11-15Bibliographically approved
Ernstson, H. & Swyngedouw, E. (2023). Wasting CO2 and the Clean Development Mechanism: The remarkable success of a climate failure. Environment and Planning E: Nature and Space
Open this publication in new window or tab >>Wasting CO2 and the Clean Development Mechanism: The remarkable success of a climate failure
2023 (English)In: Environment and Planning E: Nature and Space, ISSN 2514-8486, E-ISSN 2514-8494 Article in journal (Refereed) Epub ahead of print
Abstract [en]

This paper examines how global climate mitigation policies articulate with urban political–ecological transformations. It focuses on South African waste-to-value projects as case studies, exploring how local processes of urban ecological modernization combine with global climate finance through the now largely defunct Clean Development Mechanism (CDM). Whilst it is generally recognized that waste-related CDM projects in South Africa (and elsewhere) have been an unmitigated failure in terms of climate and socio-economic benefits, we demonstrate that landfillto-gas/energy projects have functioned effectively as geographical–discursive dispositifs through which particular knowledge systems are enrolled, specific ‘solutions’ are projected, and singular imaginaries of what is possible and desirable foregrounded, thereby crowding out alternative possibilities. This not only nurtures the commodification and marketization of non-human matter with an eye towards sustaining capital accumulation but, rather more importantly, successfully installs state-orchestrated private property relations around common resources, thereby deepening the dispossessing socio-ecological relations upon which expanded capitalist reproduction rests. We argue that whilst the formal outcome of the CDM is a failure, its success resides precisely in how it permitted local and global elites to create administrative and regulatory practices that solidify and naturalize a neoliberal market-based framework to approach the climate crisis.

Place, publisher, year, edition, pages
SAGE Publications, 2023
Keywords
Clean Development Mechanism, urban waste, neoliberal natures, ecological modernization, South Africa
National Category
Human Geography
Research subject
Planning and Decision Analysis, Strategies for sustainable development
Identifiers
urn:nbn:se:kth:diva-338976 (URN)10.1177/25148486231196677 (DOI)001080407300001 ()2-s2.0-85169307299 (Scopus ID)
Note

QC 20231123

Available from: 2023-10-31 Created: 2023-10-31 Last updated: 2023-11-23Bibliographically approved
Mario, D., Ernstson, H. & Lorien, J. (2022). Civil Society as Networks of Issues and Associations: The Case of Food. In: Glückler, J., Meyer, HD., Suarsana, L. (Ed.), Knowledge and Civil Society: . Cham: Springer
Open this publication in new window or tab >>Civil Society as Networks of Issues and Associations: The Case of Food
2022 (English)In: Knowledge and Civil Society / [ed] Glückler, J., Meyer, HD., Suarsana, L., Cham: Springer, 2022Chapter in book (Refereed)
Abstract [en]

Scholars usually conceptualize civil society as both a discursive and an associational space. In the former, focus is on communicative practices; in the latter, attention shifts to the actors that cooperate or clash about the identification and production of collective goods. In this chapter, we sketch the contours of an approach to civil society that treats both dimensions in an integrated way. Looking at the role of food issues in urban settings as diverse as Cape Town, Bristol, and Glasgow, we borrow from social network analysis to explore first, how civic organizations combine an interest in food-related issues with attention to other themes, thus defining different, specific agendas; next, we ask if and how interest in food identifies specific clusters of cooperation within broader civil society networks.

Place, publisher, year, edition, pages
Cham: Springer, 2022
National Category
Sociology Human Geography
Research subject
Planning and Decision Analysis, Strategies for sustainable development; Planning and Decision Analysis, Urban and Regional Studies
Identifiers
urn:nbn:se:kth:diva-324713 (URN)10.1007/978-3-030-71147-4_8 (DOI)2-s2.0-85151553427 (Scopus ID)
Funder
Swedish Research Council Formas, 211-2011-1519
Note

Part of book: ISBN 9783030711467

QC 20230328

Available from: 2023-03-13 Created: 2023-03-13 Last updated: 2023-06-09Bibliographically approved
Kimari, W. & Ernstson, H. (2022). The invisible labor of the “New Angola”: Kilamba’s domestic workers. Urban geography, 1-18
Open this publication in new window or tab >>The invisible labor of the “New Angola”: Kilamba’s domestic workers
2022 (English)In: Urban geography, ISSN 0272-3638, E-ISSN 1938-2847, p. 1-18Article in journal (Refereed) Published
Abstract [en]

Kilamba, the first of the new centralities in Angola, is increasingly visible in recent urban scholarship about Luanda, further establishing it as the symbol of both this “new” post-war city and the “New Angola.” Within local discourses of progress, its emergence from within “petro-urbanism,” and its size and modern aesthetics are emphasized, while little attention has been directed towards understanding the actual contributions of its workers, particularly the women who spend a significant part of their day cleaning Kilamba’s apartments. In this paper, we combine a social reproduction framework with infrastructure studies to trace the labor of Kilamba’s female domestic workers, in order to demonstrate how their everyday practices uphold the status and materiality of this centrality, even as their work is invisibilized. In doing so, we understand their commentaries about this space, often refracted through descriptions of their homes, as critiques of the infrastructural priorities of the “New Angola.”

Place, publisher, year, edition, pages
Informa UK Limited, 2022
Keywords
Domestic work; Kilamba; Luanda; Angola; Infrastructure
National Category
Human Geography Social Anthropology
Identifiers
urn:nbn:se:kth:diva-324146 (URN)10.1080/02723638.2022.2145818 (DOI)000894398100001 ()2-s2.0-85144090174 (Scopus ID)
Projects
Grounding and Worlding Urban Infrastructure (GROWL)
Note

QC 20230227

Available from: 2023-02-22 Created: 2023-02-22 Last updated: 2023-02-27Bibliographically approved
Ernstson, H. & Nilsson, D. (2022). Towards situated histories of heterogenous infrastructures: Oral history as method and meaning. Geoforum, 134, 48-58
Open this publication in new window or tab >>Towards situated histories of heterogenous infrastructures: Oral history as method and meaning
2022 (English)In: Geoforum, ISSN 0016-7185, E-ISSN 1872-9398, Vol. 134, p. 48-58Article in journal (Refereed) Published
Abstract [en]

Building on interviews with elderly people living in a low-income and auto-constructed settlement in Kampala, Uganda, this paper explores the notion of heterogenous infrastructure in its local spatial and temporal setting. Our aim is twofold. First, by intently listening to and weaving together situated narratives of how people over time have acquired infrastructural services, such as water, energy, waste, and sanitation, we reveal deeper insights of the socio-political, but also material structures and interactions at play between the State, the disenfranchised, and their intermediaries. Second, we start uncovering the so far largely unexplored potential of oral history as a method to meaningfully interpret the "infrastructural past" of postcolonial and Southern cities where most of ordinary people's experience was never put on record. Our findings point to the usefulness of oral history methods to widen the lens of who and what contributed to the production of fundamental resources for urban life-and its politics.

Place, publisher, year, edition, pages
Elsevier BV, 2022
Keywords
Heterogenous infrastructure, Oral history, Informal settlement, Kampala
National Category
Other Social Sciences
Identifiers
urn:nbn:se:kth:diva-315882 (URN)10.1016/j.geoforum.2022.06.001 (DOI)000822701400006 ()2-s2.0-85132749541 (Scopus ID)
Note

QC 20220728

Available from: 2022-07-28 Created: 2022-07-28 Last updated: 2022-07-28Bibliographically approved
Ernstson, H. (2021). Ecosystems and urbanization: A colossal meeting of giant complexities. Ambio
Open this publication in new window or tab >>Ecosystems and urbanization: A colossal meeting of giant complexities
2021 (English)In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Stockholm: , 2021
National Category
Human Geography
Identifiers
urn:nbn:se:kth:diva-292748 (URN)10.1007/s13280-021-01516-y (DOI)000628198400002 ()33710515 (PubMedID)2-s2.0-85102591938 (Scopus ID)
Note

QC 20210414

Available from: 2021-04-13 Created: 2021-04-13 Last updated: 2024-03-15Bibliographically approved
Pandis-Iveroth, S., Borgström, S. & Ernstson, H. (2021). Fossilfri och tillgänglig transport och mobilitet. Stockholm
Open this publication in new window or tab >>Fossilfri och tillgänglig transport och mobilitet
2021 (Swedish)Report (Other (popular science, discussion, etc.))
Abstract [sv]

Rapporten presenterar 2020 års verksamhet inom det gemensamma vetenskapliga rådet mellan Stockholms stad och KTH. Rapporten sammanfattar rådets arbete kring temat "Fossilfri och tillgänglig transport och mobilitet" som utgick från stadens "Klimathandlingsplan 2020–2023." Den tydligaste strategiska perspektivet som rådet lyft fram är den kring rådighet; att Klimathandlingsplanen fokuserar på bränsleomställning där staden har svag eller ingen rådighet, samtidigt som de områden där staden har tydlig rådighet (till exempel stadsplanering) hamnar i skymundan. Flertal vägar framåt lyfts fram för att gå vidare.

Place, publisher, year, edition, pages
Stockholm: , 2021. p. 26
Series
Vetenskapligt råd mellan KTH och Stockholm stad
Keywords
transport, mobilitet, fossilfri omställning, tillgänglighet
National Category
Social Sciences Interdisciplinary Transport Systems and Logistics
Research subject
Planning and Decision Analysis, Strategies for sustainable development
Identifiers
urn:nbn:se:kth:diva-294588 (URN)
Projects
Vetenskapligt råd mellan KTH och Stockholms stad
Note

QC 20210524

Available from: 2021-05-18 Created: 2021-05-18 Last updated: 2022-06-25Bibliographically approved
von Heland, J., Adams, B., Armiero, M., Björk, K., Boman, K., Chidgasornpongse, S., . . . Åhlund, J. (Eds.). (2021). Ruptured Times: Advances in Visual Environmental Humanities. Cern: Zenodo
Open this publication in new window or tab >>Ruptured Times: Advances in Visual Environmental Humanities
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2021 (English)Collection (editor) (Refereed)
Abstract [en]

This first issue of Annals of Crosscuts includes eleven richly textured films that speak from the growing environmental humanities with strong intent and originality. The films speaks to the theme of "Ruptured Times" and forms a testimony to the integrative ambitions of the environmental humanities. The contributors come from a range of disciplines, schools and practices including artistic research, urban and architectural studies, social movements of the urban south, political ecologies of water, studies of mining legacies, decolonial performance aesthetics, science studies and ethnographies of conservation, toxicity and more-than-human relations. Made in ten countries, at four continents, the films are the final outcomes of a collaborative peer-review process that started in the first half of 2019, screened at the Crosscuts festival in late 2019 and published as a film-based special issue at Zenodo, CERN, in 2021 with a reflection from chief editor Jacob von Heland.

Place, publisher, year, edition, pages
Cern: Zenodo, 2021
Series
Annals of Crosscuts: Films of Environmental Humanities
National Category
Human Geography Studies on Film
Research subject
History of Science, Technology and Environment
Identifiers
urn:nbn:se:kth:diva-292749 (URN)10.5281/zenodo.46271 (DOI)
Projects
Visual Environmental Humanities
Note

QC 20210414

Available from: 2021-04-13 Created: 2021-04-13 Last updated: 2022-06-25Bibliographically approved
Ernstson, H., Lawhon, M., Anesu, M., Millington, N., Stokes, K. & Swyngedouw, E. (2021). Turning Livelihood to Rubbish?: The Politics of Value and Valuation in South Africa’s Urban Waste Sector. In: Keith, Michael de Souza Santos and Andreza Aruska (Ed.), African Cities and Collaborative Futures: Urban Platforms and Metropolitan Logistics (pp. 97-120). Manchester: Manchester University Press
Open this publication in new window or tab >>Turning Livelihood to Rubbish?: The Politics of Value and Valuation in South Africa’s Urban Waste Sector
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2021 (English)In: African Cities and Collaborative Futures: Urban Platforms and Metropolitan Logistics / [ed] Keith, Michael de Souza Santos and Andreza Aruska, Manchester: Manchester University Press , 2021, p. 97-120Chapter in book (Refereed)
Abstract [en]

We will discuss our experience of researching solid waste management politics in South African cities, in particular Cape Town, Johannesburg, and Ekurhuleni. The title of our project – Turning Livelihoods to Waste? – was designed to raise a serious of questions about ongoing trends in the waste sector and the implications. South African household waste management operates under a paradigm of cooperative governance where authority is distributed across various scales of government, business, and society. Recent efforts to expand, improve, and formalize solid household waste management and recycling initiatives have implications for those who currently work with waste - particularly for informal waste pickers or reclaimers, who do much of the primary work with waste in the global south. Despite promises of green economic development and job creation, many people working with waste in South Africa work are subjected to precarious and difficult work conditions or experience new uncertainties and vulnerabilities which threaten existing livelihood strategies. In turn, there are serious questions about whether waste workers should be expected to work in dangerous conditions, and what sorts of alternate arrangements may be more just and more ecologically sustainable.

Place, publisher, year, edition, pages
Manchester: Manchester University Press, 2021
National Category
Human Geography Social Sciences Interdisciplinary Public Administration Studies
Research subject
Planning and Decision Analysis, Strategies for sustainable development
Identifiers
urn:nbn:se:kth:diva-292750 (URN)
Projects
Turning Livelihoods to Rubbish (UK DFID)
Note

Part of book: ISBN 978-1-5261-5536-8, QC 20230117

Available from: 2021-04-13 Created: 2021-04-13 Last updated: 2023-01-17Bibliographically approved
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Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-6415-4821

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