scholarly journals The Embeddedness of Urban Climate Politics in Multilevel Governance: A Case Study of South Africa’s Major Cities

2018 ◽  
Vol 28 (1) ◽  
pp. 54-77 ◽  
Author(s):  
Thomas Hickmann ◽  
Fee Stehle
Keyword(s):  
Climate Change ◽  
Empirical Studies ◽  
Urban Climate ◽  
Multilevel Governance ◽  
Climate Mitigation ◽  
Local Climate ◽  
Climate Politics ◽  
Transnational City ◽  
Political Economic

Numerous scholars have lately highlighted the importance of cities in the global response to climate change. However, we still have little systematic knowledge on the evolution of urban climate politics in the Global South. In particular, we lack empirical studies that examine how local climate actions arise in political-administrative systems of developing and emerging economies. Therefore, this article adopts a multilevel governance perspective to explore the climate mitigation responses of three major cities in South Africa by looking at their vertical and horizontal integration in the wider governance framework. In the absence of a coherent national climate policy, Johannesburg, Cape Town, and Durban have developed distinct climate actions within their jurisdictions. In their effort to address climate change, transnational city networks have provided considerable technical support to these cities. Yet, substantial domestic political-economic obstacles hinder the three cities to develop a more ambitious stance on climate change.

scholarly journals Projections of the urban and intra-urban scale thermal effects of climate change in the 21st century for cities in the Carpathian Basin

2021 ◽  
Vol 70 (1) ◽  
pp. 19-33
Author(s):  
Tamás Gál ◽  
Nóra Skarbit ◽  
Gergely Molnár ◽  
János Unger
Keyword(s):  
Climate Change ◽  
21St Century ◽  
Urban Climate ◽  
Thermal Characteristics ◽  
Carpathian Basin ◽  
Climate Index ◽  
Climate Mitigation ◽  
Emission Scenarios ◽  
Local Climate ◽  
Mitigation And Adaptation

This study evaluates the pattern of a nighttime climate index namely the tropical nights (Tmin ≥ 20ºC) during the 21st century in several different sized cities in the Carpathian Basin. For the modelling, MUKLIMO_3 microclimatic model and the cuboid statistical method were applied. In order to ensure the proper representation of the thermal characteristics of an urban landscape, the Local Climate Zone (LCZ) system was used as landuse information. For this work, LCZ maps were produced using WUDAPT methodology. The climatic input of the model was the Carpatclim dataset for the reference period (1981–2010) and EURO-CORDEX regional model outputs for the future time periods (2021–2050, 2071–2100) and emission scenarios (RCP4.5, RCP8.5). As results show, there would be a remarkable increase in the number of tropical nights along the century, and there is a clearly recognizable increase owing to urban landform. In the near past, the number of the index was 6–10 nights higher in the city core than the rural area where the number of this index was negligible. In the near future this urban-rural trend is the same, however, there is a slight increase (2–5 nights) in the index in city cores. At the end of the century, the results of the two emission scenarios become distinct. In the case of RCP4.5 the urban values are about 15–25 nights, what is less stressful compared to the 30–50 nights according to RCP8.5. The results clearly highlight that the effect of urban climate and climate change would cause serious risk for urban dwellers, therefore it is crucial to perform climate mitigation and adaptation actions on both global and urban scales.

scholarly journals Urban Climates and Climate Change

2020 ◽  
Vol 45 (1) ◽  
pp. 411-444 ◽  
Author(s):  
Valéry Masson ◽  
Aude Lemonsu ◽  
Julia Hidalgo ◽  
James Voogt
Keyword(s):  
Climate Change ◽  
Climate Modeling ◽  
Regional Climate ◽  
Urban Climate ◽  
Regional Climate Modeling ◽  
Climate Impact ◽  
Local Climate ◽  
Urban Climatology ◽  
Recent Developments ◽  
Global Agenda

Cities are particularly vulnerable to extreme weather episodes, which are expected to increase with climate change. Cities also influence their own local climate, for example, through the relative warming known as the urban heat island (UHI) effect. This review discusses urban climate features (even in complex terrain) and processes. We then present state-of-the-art methodologies on the generalization of a common urban neighborhood classification for UHI studies, as well as recent developments in observation systems and crowdsourcing approaches. We discuss new modeling paradigms pertinent to climate impact studies, with a focus on building energetics and urban vegetation. In combination with regional climate modeling, new methods benefit the variety of climate scenarios and models to provide pertinent information at urban scale. Finally, this article presents how recent research in urban climatology contributes to the global agenda on cities and climate change.

scholarly journals Investigating Future Urbanization’s Impact on Local Climate under Different Climate Change Scenarios in MEGA-urban Regions: A Case Study of the Pearl River Delta, China

Atmosphere ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 771
Author(s):  
Pak Shing Yeung ◽  
Jimmy Chi-Hung Fung ◽  
Chao Ren ◽  
Yong Xu ◽  
Kangning Huang ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Pearl River Delta ◽  
Pearl River ◽  
Climate Change Scenarios ◽  
Local Climate ◽  
The Pearl River Delta ◽  
The Future ◽  
The Pearl River

Urbanization is one of the most significant contributing factors to anthropogenic climate change. However, a lack of projected city land use data has posed significant challenges to factoring urbanization into climate change modeling. Thus, the results from current models may contain considerable errors in estimating future climate scenarios. The Pearl River Delta region was selected as a case study to provide insight into how large-scale urbanization and different climate change scenarios impact the local climate. This study adopts projected land use data from freely available satellite imagery and applies dynamic simulation land use results to the Weather Research and Forecasting Model (WRF). The simulation periods cover the summer periods in 2010 and 2029–2031, the latter of which is averaged to represent the year 2030. The WRF simulation used the observed local climate conditions in 2010 to represent the current scenario and the projected local climate changes for 2030 as the future scenario. Under all three future climate change scenarios, the warming trend is prominent (around 1–2 °C increase), with a widespread reduction in wind speed in inland areas (1–2 ms−1). The vulnerability of human health to thermal stress was evaluated by adopting the wet-bulb globe temperature (WBGT). The results from the future scenarios suggest a high public health risk due to rising temperatures in the future. This study provides a methodology for a more comprehensive understanding of future urbanization and its impact on regional climate by using freely available satellite images and WRF simulation tools. The simulated temperature and WBGT results can serve local governments and stakeholders in city planning and the creation of action plans that will reduce the potential vulnerability of human health to excessive heat.

scholarly journals Institutional Design and Elite Support for Climate Policies: Evidence from Latin American Countries

2019 ◽  
Author(s):  
Danilo Freire ◽  
Umberto Guarnier Mignozzetti ◽  
David Skarbek
Keyword(s):  
Climate Change ◽  
Latin American ◽  
Institutional Design ◽  
Local Level ◽  
Climate Mitigation ◽  
Local Climate ◽  
Climate Policies ◽  
Local Climate Change ◽  
Local Courts ◽  
Latin American Countries

Which institutional features do Latin American elites favor for local climate change policies? Climate change mitigation requires active local level implementation, but it remains unclear which institutional arrangements maximize support for environmental rules. In this paper, we run a conjoint experiment with elite members of 10 Latin American countries and ask respondents to evaluate institutional designs drawn from a pool of 5,500 possible local climate governance arrangements. We find that Latin American elites prefer international organizations to formulate climate policies, support imposing increasing fines on violators, and favor renewing agreements every five years. We also find that elites support both international institutions and local courts to mediate conflicts, but they distrust non-governmental organizations and reject informal norms as a means of conflict resolution. Our results identify possible challenges in crafting local climate mitigation policies and offer new insights about how to integrate local and international levels in environmental agreements.

scholarly journals Using urban climate modelling and improved land use classifications to support climate change adaptation in urban environments: A case study for the city of Klagenfurt, Austria

Urban Climate ◽  
2020 ◽  
Vol 31 ◽  
pp. 100582 ◽  
Author(s):  
Sandro M. Oswald ◽  
Brigitta Hollosi ◽  
Maja Žuvela-Aloise ◽  
Linda See ◽  
Stefan Guggenberger ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Climate Change Adaptation ◽  
Urban Climate ◽  
Urban Environments ◽  
Climate Modelling ◽  
The City

Urban green gentrification in an unequal world of climate change

Urban Studies ◽  
2020 ◽  
Vol 57 (14) ◽  
pp. 2803-2816 ◽  
Author(s):  
Anders Blok
Keyword(s):  
Climate Change ◽  
Urban Climate ◽  
Risk Society ◽  
Suggested Approach ◽  
Climate Politics ◽  
North West ◽  
The North ◽  
Theoretical Approaches ◽  
Indian City ◽  
The Many

Over the past few decades, notions of environmental, ecological or green gentrification in cities have entered the lexicon of critical urban scholars and activists alike, not least in North American and European settings. This happens amidst growing concerns that the current policy and planning emphasis on making cities more sustainable serves in some cases to exacerbate socio-material inequalities in the city via forms of residential displacement. In this critical commentary, I respond to recent calls for expanding the socio-geographical parameters of green gentrification research, and for enriching the agenda via new theoretical approaches, by highlighting one particular avenue of problematisation that seems so far conspicuously lacking. This is the realisation that, in an unequal world of anthropogenic climate change, green gentrification must be grasped not only at local but also, simultaneously, at transnational scales of risk-induced socio-spatial restructuring. My suggested approach to a more multi-scalar and climate-sensitive notion of green gentrification proceeds via sociologist Ulrich Beck’s theorising of the intensifying socio-material inequalities of climate change in ‘world risk society’, along with ethnographic work on urban climate politics in Copenhagen, the capital of Denmark, and in the North-West Indian city of Surat. While allowing us to analyse the many local ambivalences wedded with urban sustainability politics in the global North and global South alike, Beck helpfully insists that we keep their unequal trans-local interconnectedness in view, yielding a radicalised notion of green gentrification as set in-between and connecting localised and globalised frames of inequality in new ways.

Embedding resilience of urban areas to climate change: a case study of Rotterdam

2018 ◽  
Vol 56 (4) ◽  
pp. 59-68
Author(s):  
Anna Bilska
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Interpersonal Relations ◽  
Urban Climate ◽  
Holistic Approach ◽  
Broad Perspective ◽  
Climate Resilience ◽  
Network Building ◽  
The City

Abstract Climate change may have severe consequences for urban areas and many cities, such as those situated on deltas, are already threatened. The paper claims that the solution for endangered areas is the embedding of urban climate resilience. The concept of resilience is put forward to bring a broad perspective to a city with an indication that the city is a complex system with developed relations, both inward and outward. Social and institutional aspects of these relations are highlighted as they have the highest potential to make the city resilient. The paper indicates three fundamental features of embedding the resilience of urban areas to climate change: network building, a strategic approach and implementing urban projects. A practical application of these fundamental features is evaluated using the case study of Rotterdam. The research shows the reliability of these bases and indicates key characteristics of each fundamental feature: the network should be multidimensional with solid institutional and interpersonal relations, the strategy should have a holistic approach and project implementation needs the engagement of all the city actors.

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