Effects of the Uncertainty about Global Economic Recovery on Energy Transition and CO2 Price

This paper examines the impact that uncertainty over economic growth may have on global energy transition and CO2 prices. We use a general-equilibrium model derived from MERGE, and define several stochastic scenarios for economic growth. Each scenario is characterized by the likelihood of a rapid global economic recovery. More precisely, during each decade, global economy may - with a given probability - shift from the EIA's (2010) low-economic-growth path to the EIA's (2010) high-economic-growth path. The climate policy considered corresponds in the medium term to the commitments announced after the Copenhagen conference, and in the long term to a reduction of 25% in global energy-related CO2 emissions (with respect to 2005). For the prices of CO2 and electricity, as well as for the implementation of CCS, the branches of the resulting stochastic trajectories appear to be heavily influenced by agents’ initial expectations of future economic growth and by the economic growth actually realized. Thus, in 2040, the global price of CO2 may range from $21 (when an initially-anticipated economic recovery never occurs) to$128 (in case of nonanticipated rapid economic recovery). In addition, we show that within each region, the model internalizes the constraints limiting the expansion of each power-generation technology through the price paid by the power utility for the acquisition of new production capacity. As a result, in China, the curves of endogenous investment costs for onshore and offshore wind are all bubble-shaped centered on 2025, a date which corresponds to the establishment of a global CO2 cap-and-trade market in the model.GDF-Sue

Michel Rochefort et la question urbaine dans le Tiers-Monde

 Comment as-tu été conduit à travailler sur les villes du Tiers-Monde et en quoi cela a-t-il influencé ton approche de la question urbaine ? Il faut rappeler que j’ai d’abord été formé par une réflexion sur la ville, l’aménagement du territoire et les métropoles d’équilibre en France. Jusqu’au milieu des années soixante, exception faite du petit livre d’Yves Lacoste, relativement peu de travaux de géographes avaient abordé la question du sous-développement en tant que telle. J’ai d’abord déc..

Low-carbon quick wins : Integrating short-term sustainable transport options in climate policy in low-income countries

In low income countries (LICs) in Africa and Asia per capita transport greenhouse gas emissions are relatively low but are expected to grow. Therefore, a substantial reduction in projected increases is required to bring emissions in line with long-term global climate objectives. Literature on how LICs are integrating climate change mitigation and sustainable transport strategies is limited. Key drivers of transport policy include improving accessibility, congestion, air quality, energy security, with reducing greenhouse gas emissions being of lower priority. This paper assesses the current status, feasibility and potential of selected low-carbon transport measures with high sustainable development benefits that can be implemented in the short to medium term, socalled 'quick wins'. It examines to what extent ten such quick wins are integrated in climate change strategies in nine low- and middle-income countries in Africa and South Asia. The research method comprises expert interviews, an online questionnaire survey of experts and policymakers in the focus countries, and a review of literature and government plans. Results indicate that sustainable urban transport policies and measures are considered high priority, with vehicle-related measures such as fuel quality and fuel economy standards and electric two- and three-wheelers being of key relevance. In existing national climate change strategies, these quick wins are integrated to a certain extent; however, with better coordination between transport and energy and environment agencies such strategies can be improved. A general conclusion of this paper is that for LICs, quick wins can connect a 'top-down' climate perspective with a 'bottom-up' transport sector perspective. A knowledge gap exists as to the mitigation potential and sustainable development benefits of these quick wins in the local context of LICs

Tenure Security and Urban Social Protection Links: India

Guaranteeing tenure security to the households living in informal settlements (slums) has not seen any progress in urban India. This is because the policymakers have failed to see land tenure status as a continuum from insecure tenure to a legal status. In general, the poor in the cities move from informal to quasi?legal ( de facto ) tenure through various processes, and then to legal tenure ( de jure ) in cases of a public policy intervention that confers property title on them. In the absence of such a policy, the urban poor and low?income migrants can seek to consolidate their urban citizenship through political citizenship in an electoral democracy, through welfare interventions by the state and above all, through their own subversions of urban legalities. This article first illustrates the existence of a continuum of tenure status in informal settlements in Ahmedabad City. It explains the factors that give a slum settlement a particular level of tenure status; and then through quantitative data, links the level of tenure security to social protection outcomes. The article shows that through small public actions, it is possible to improve access of the urban poor to social protection measures and that it is not necessary to leapfrog to extending property rights to the dwellers of these informal settlements. It is essential to realise that if land titles are given in a society where other rights are not present, the poor will not be able to retain them

Taking some heat off the NDCs? The limited potential of additional short-lived climate forcers’ mitigation

Several studies have shown that the greenhouse gas reduction resulting from the current nationally determined contributions (NDCs) will not be enough to meet the overall targets of the Paris Climate Agreement. It has been suggested that more ambition mitigations of short-lived climate forcer (SLCF) emissions could potentially be a way to reduce the risk of overshooting the 1.5 or 2 °C target in a cost-effective way. In this study, we employ eight state-of-the-art integrated assessment models (IAMs) to examine the global temperature effects of ambitious reductions of methane, black and organic carbon, and hydrofluorocarbon emissions. The SLCFs measures considered are found to add significantly to the effect of the NDCs on short-term global mean temperature (GMT) (in the year 2040: − 0.03 to − 0.15 °C) and on reducing the short-term rate-of-change (by − 2 to 15%), but only a small effect on reducing the maximum temperature change before 2100. This, because later in the century under assumed ambitious climate policy, SLCF mitigation is maximized, either directly or indirectly due to changes in the energy system. All three SLCF groups can contribute to achieving GMT changes

The role of methane in future climate strategies: mitigation potentials and climate impacts

This study examines model-specific assumptions and projections of methane (CH4) emissions in deep mitigation scenarios generated by integrated assessment models (IAMs). For this, scenarios of nine models are compared in terms of sectoral and regional CH4 emission reduction strategies, as well as resulting climate impacts. The models’ projected reduction potentials are compared to sector and technology-specific reduction potentials found in literature. Significant cost-effective and non-climate policy related reductions are projected in the reference case (10–36% compared to a “frozen emission factor” scenario in 2100). Still, compared to 2010, CH4 emissions are expected to rise steadily by 9–72% (up to 412 to 654 Mt CH4/year). Ambitious CO2 reduction measures could by themselves lead to a reduction of CH4 emissions due to a reduction of fossil fuels (22–48% compared to the reference case in 2100). However, direct CH4 mitigation is crucial and more effective in bringing down CH4 (50–74% compared to the reference case). Given the limited reduction potential, agriculture CH4 emissions are projected to constitute an increasingly larger share of total anthropogenic CH4 emissions in mitigation scenarios. Enteric fermentation in ruminants is in that respect by far the largest mitigation bottleneck later in the century with a projected 40–78% of total remaining CH4 emissions in 2100 in a strong (2 °C) climate policy case

From Poverty to Disaster and Back: a Review of the Literature

Poor people are disproportionally affected by natural hazards and disasters. This paper provides a review of the multiple factors that explain why this is the case. It explores the role of exposure (often, but not always, poor people are more likely to be affected by hazards), vulnerability (when they are affected, poor people tend to lose a larger fraction of their wealth), and socio-economic resilience (poor people have a lower ability to cope with and recover from disaster impacts). Finally, the paper highlights the vicious circle between poverty and disaster losses: poverty is a major driver of people’s vulnerability to natural disasters, which in turn increase poverty in a measurable and significant way. The main policy implication is that poverty reduction can be considered as disaster risk management, and disaster risk management can be considered as poverty reduction

Land Markets and Land Delivery Systems in Rapidly Expanding West African Cities. The case of Bamako. Policy Issues, Research Topics and Methodology

This paper presents a new type of land market analysis relevant to cities with plural tenure systems as in West Africa. The methodology hinges on a systemic analysis of land delivery channels, which helps to show how land is initially made available for circulation, how tenure can be formalized incrementally, and the different means whereby households can access land. The analysis is applied to the area of Bamako in Mali, where information was collected through (i) interviews with key informants, (ii) a literature review on land policies, public allocations, and customary transfers of land, (iii) a press review on land disputes, and (iv) a survey of more than 1,600 land transfers of un-built plots that The analysis finds that land is mostly accessed through an informal customary channel, whereby peri-urban land is transformed from agricultural to residential use, and through a public channel, which involves the administrative allocation of residential plots to households. The integrated analysis of land markets and land institutions stresses the complexity of procedures and the extra-legality of practices that strongly affect the functioning of formal and informal markets and make access to land costly and insecure, with negative social, economic, and environmental impacts over the long term