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Many people associate raising living standards in developing countries with increases in greenhouse gas emissions. But would improving access to basic needs—such as water supply and nutrition to poor households in Africa—have the same impact on climate change as increasing affluence—people moving to the suburbs, buying bigger homes, and buying cars?
New research that we published this week shows that in fact, it may take fewer emissions to raise the poor’s basic living standards than it does to grow affluence. If this is the case, then progressive development policies may well support climate mitigation. Our new study suggests that climate research needs to focus on how countries’ emissions growth relates to the services people are provide. This could change how we think about development, and influence how we approach the Paris climate negotiations in 2015 – a milestone many view as the last chance for international cooperation to guide humanity onto a safe path of climate stabilization.
Usripur, India. Photo Credit: Rajashree Khalap
There are many reasons why researchers have stumbled when thinking about poverty eradication and climate change mitigation. First, poverty is itself a debated concept. Much of the development community has moved beyond thinking of poverty just as income. We now include measures of other deprivations for example food, health, and education. But metrics abound, many of which are hard to quantify and aggregate. Second, the climate research community has yet to catch up on this shift when linking growth to human-induced greenhouse gases. Countries’ growth pathways in climate scenarios are still represented solely in terms of GDP, which doesn’t say much about how that wealth is distributed or access to basic living standards. Third, data on the multiple dimensions of poverty are hard to come by, particularly for poor countries where they are needed most.
In our new study, we used available data on well-recognized poverty indicators – adequate nourishment, water supply and sanitation and electricity access – to relate countries’ growth over time to these indicators and to emissions. We found that while countries’ GDP has grown largely in proportion to emissions, access to these basic needs has grown in the majority of developing countries without proportionate emissions increases. Furthermore, in a handful of countries (such as Costa Rica, Armenia, Kyrgyzstan, and others) over 90% of the population have access to these basic needs with total emissions of less than five tons of CO2 equivalent per capita, which is well below the world average of 6.3 tons per capita.
Hyderabad, India. Photo Credit: Dave Wilson via Flickr
Much more research is needed before we can assess whether other countries can raise living standards with low carbon emissions growth. Indeed, increased energy access is a primary driver of greenhouse gas growth, and the energy needs of basic human development aren’t well understood, although we have begun to characterize economy-wide energy needs besides providing modern energy to homes. Countries with different fuel endowments and climate may require different energy and emissions to achieve the same progress in human development.
Understanding the climate impacts of poverty alleviation can be useful for international climate policy. One can identify opportunities and challenges for basic human development within the limited carbon space available if we are to keep global average temperature rise within 2-3 degrees C. Second, it can offer a way to differentiate mitigation efforts among developing countries by recognizing and quantifying emissions associated with basic needs. The lack of a successful agreement on other efforts-sharing regimes over the last twenty years gives cause to chart new directions.
References
Rao, ND, Riahi K, and Grubler A. 2014. Climate impacts of poverty eradication. Nature Climate Change. 4,749–751 doi:10.1038/nclimate2340
Rao, ND, P. Baer. 2012, Decent living emissions: a conceptual framework. Sustainability 4 (4), 656-681. doi:10.3390/su4040656
Rao, ND. 2013. International and intranational equity in burden-sharing agreements for climate change mitigation. International Environmental Agreements: Politics, Law and Diplomacy, Volume 14, Issue 2, pp 129-146. doi:10.1007/s10784-013-9212-7
Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.
“We have to recognize that international approaches to climate change have basically failed. They are not going anywhere, maybe even backwards,” said economist William Nordhaus at a lecture for IIASA staff and young scientists on 23 June. The reason for this failure, he argued, is that international agreements have so far failed to deal with the problem of free riders.
The Kyoto Protocol, for instance, failed as countries dropped out one by one, as soon as mitigation started to become costly. Many countries never even ratified the agreement. Nordhaus explained, “There were no penalties for dropping out.”
Norhaus first introduced the concept of climate clubs at the IIASA 40th Anniversary Conference in 2012.
As the next round of climate talks approach this winter and next in Paris, many researchers say it is time for a new model for international climate change treaties. One new idea, which Nordhaus first proposed at the IIASA 40th Anniversary Conference in 2012, is the concept of “climate clubs.”
Nordhaus said, “Think of the treaty as a club. It’s a voluntary agreement, where members get certain benefits, for a certain cost.” A climate club would work like a free-trade union, such as the EU. It would encourage participation by penalizing non-participants, allowing members of the “climate club” to charge tariffs on all imports of non-participating nations. In his lecture on Monday, Nordhaus expanded on the concept he introduced in 2012, presenting the results of modeling work to determine the tariff rates and carbon prices that would be needed in such an agreement, and how participation would look.
Nordhaus found that more countries were likely to participate when carbon prices were lower. At a carbon price of 25 or 50 dollars, a majority of world regions would participate in the club, while at higher carbon prices of 75 to 100 dollars per ton of carbon dioxide, the highest participation rate would be only about half of that.
At IIASA on Monday. From left: William Nordhaus, IIASA Deputy Director General Nebojsa Nakicenovic, and IIASA Risk Policy and Vulnerability Program Director Joanne Bayer
The high carbon price, Nordhaus explained, would make the cost of participating much higher than the costs of tariffs for non-participants. However, with a lower carbon price, even low penalty tariffs of 3 to 4% could be enough to encourage participation. The idea of tariffs is simpler than previous suggestions of trade penalties based on the carbon emissions impact of specific goods—which in practice are difficult to define, and, as Nordhaus said, “not a big enough stick to induce participation.”
Like any trade agreement, though, Nordhaus’ climate club also means some win and some lose. When he examines the benefits on a regional level, the US, EU, and India appear to gain the most benefits, while Russia and China gain the least. What would it take to get such an agreement off the ground? Nordhaus said that a few key regions would be enough—for example, the EU, the USA, and China.
Watch Nordhaus’ 2012 Lecture at the IIASA Conference
William Nordhaus is Sterling Professor of Economics at Yale University, New Haven, Connecticut, USA. He has a B.A. from Yale University (1963) and a Ph.D. in Economics from MIT (1967). More>>
Scientists who have worked for many years in the field of climate change sometimes grow cynical about the possibility that the world will address the problem. After over 40 years of research on the subject, there is still no global agreement on climate change, and greenhouse gas emissions continue to increase. This despite growing evidence of the severity of the problem.
“The odds are against us, but they are not zero,” he told an audience of IIASA researchers on 13 May. In a wide-ranging lecture for IIASA staff, Schellnhuber highlighted some of the most recent findings on climate change from PIK researchers, but also shared his thoughts on the potential for the world to take action to mitigate the emissions that are leading to climate warming.
The human race has blossomed on this planet only in the last 11,000 years, a period of very stable climate known as the Holocene. Without this stability, Schellnhuber pointed out, humans would not have been able to develop agriculture, let alone the technological advances of the industrial revolution or the population explosions that followed from these developments. Destabilizing this climate that has led to such success could be dangerous—and evidence suggests that it will be most dangerous to people in developing countries, who did the least to cause the problem.
Some of the more worrisome research to come out of PIK and other climate research centers in recent years focuses on possible tipping points or “non-linearity” in the climate system. For example, changes in the jet stream, related to declining Arctic sea ice cover and warming in the Arctic, are already proving to have major effects on weather, possibly contributing to recent heat waves like the 2010 heat wave in Russia, as well as floods in more southern regions—such extreme weather events are likely to become more frequent, said Schellnhuber, in a world with greater warming.
A new study from PIK researchers shows that the East Antarctic Ice Sheet may also be in danger of melt that would raise sea levels. (Image courtesy NASA Goddard)
At the same time, a new study from PIK scientists suggests that the glaciers which serve as the outlet for the massive East Antarctic Ice Sheet might melt, effectively unplugging the passages that hold the ice sheet in place. Schellnhuber said, “If global warming removes that plug, there could be an unstoppable flow of ice into the ocean.”
New research from NASA announced this week suggests that the West Antarctic Ice Sheet may already have been so destabilized. Schellnhuber points out that the countries that will experience the greatest impacts of sea level rise—primarily in the tropics—contributed the least to the problem.
A moral issue
Many researchers at both IIASA and PIK work closely with policymakers to help define the costs and benefits of climate action. But Schellnhuber argued that only a social movement will provide the push that policymakers need in order to support strong action. When he talks to heads of government, he said, they listen to what he has to say. But without broad support, they cannot or will not act.
“I think it is a moral issue in the end. People have to decide whether they want to do something,” he said. “The older I get and the more I learn about the challenges, the more I think this is the only way.”
References
Tang, Q, Zhang X, Francis JA. (2014). Extreme summer weather in northern mid-latitudes linked to a vanishing cryosphere. Nature Climate Change 4, 45–50 (2014) doi:10.1038/nclimate2065
Levermann, A., Bamber, J., Drijfhout, S., Ganopolski, A., Haeberli, W., Harris, N.R.P., Huss, M., Krüger, K., Lenton, T., Lindsay, R.W., Notz, D., Wadhams, P., Weber, S. (2012): Potential climatic transitions with profound impact on Europe – Review of the current state of six ‘tipping elements of the climate system’. Climatic Change 110 (2012), 845-878, [DOI 10.1007/s10584-011-0126-5]
Joughin, I, Smith BE, Medley B. (2014) Marine Ice Sheet Collapse Potentially Underway for the Thwaites Glacier Basin, West Antarctica. Science. 10.1126/science.1249055
Rignot E, Mouginot J, Morlighem M, Seroussi H, and Scheuchl B. (2014) Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith and Kohler glaciers, West Antarctica from 1992 to 2011. Geophysical Research Letters. DOI: 10.1002/2014GL060140
By Matthias Jonas, IIASA, and Gregg Marland, Appalachian State University
Greenhouse gas emissions are seldom measured directly. They must be estimated from data such as on energy use and changes in land use. That means that estimates of greenhouse gas emissions from human sources are inherently uncertain.
Uncertainty around emissions may mean that reaching temperature targets would require greater cuts than previously thought. Central and Eastern Europe at night, taken from the NASA, International Space Station in 2011. Image Credit: NASA
In a new study with colleagues at IIASA and the Polish Academy of Sciences, we asked how uncertainty over time will affect short-term GHG emission commitments and long-term efforts to meet global temperature targets for 2050 and beyond. The new study addresses a fundamental problem: how to combine uncertainty about current and historic emissions (diagnostic uncertainty) with uncertainty about projected future emissions (prognostic uncertainty).
The paper introduces a concept we call the Emissions, Temperature, Uncertainty (ETU) framework.The ETU framework allows any country to understand its national and near-term mitigation and adaptation efforts in a more realistic context, where uncertainty is taken into account.
The ETU assumes that cumulative emissions can be constrained over time by international agreements that are binding, but that emissions can be estimated only imprecisely, and whether or not they will achieve an agreed temperature target is also uncertain. The ETU framework allows policymakers to understand diagnostic and prognostic uncertainty so that they can make more educated (precautionary) decisions for reducing emissions given an agreed future temperature target.
Diagnostic uncertainty refers to the uncertainty contained in current inventoried emission estimates and relates to the risk that true greenhouse gas emissions are greater than inventoried emission estimates. Prognostic uncertainty refers to cumulative emissions between a start year and a future target year and the global average temperature increase they would generate. It relates to the risk that an agreed temperature target is exceeded. In a nutshell, the ETU framework can be used to monitor a country’s performance – that is, past achievements as well as projected achievements – in complying with a future warming target in a quantified uncertainty-risk context.
While our study addresses whether or not the future increase in global temperature can be kept below 2, 3, or 4ºC targets, its primary aim is to use those targets to demonstrate the relevance of both diagnostic and prognostic uncertainty. The paper shows:
Uncertainty is important in emissions: Both diagnostic and prognostic uncertainty need to be considered to facilitate better decisions on reducing emissions, given an agreed future temperature target.
What these risks mean for emissions targets: We find, for example, that to nullify the diagnostic uncertainty-related risk, and to maintain a similar level of risk for exceeding a 2o target, the universally valid per-capita emissions target for 2050 resulting from the underlying cumulative emissions constraint needs to be shifted downward by nearly 10%.
Risk and uncertainty are interdependent: This interdependence poses a challenge for decision-makers because they have to deal with uncertainty and risk simultaneously.
Including land-use change is tricky: Determining cumulative emissions from land use and land-use change in this emission-temperature setting is difficult, because an achievable future state of sustainability for the terrestrial biosphere has not yet been defined.
Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.
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