Biochar from biomass waste as a renewable carbon material for climate change mitigation in reducing greenhouse gas emissions—a review

Biomass Conversion and Biorefinery (2020)

Sri Shalini S., Palanivelu K., Ramachandran A. & Vijaya Raghavan 

Abstract

Biomass waste generation is increasing enormously and biomass burning emits greenhouse gas emissions causing severe effects on the environment and health of the population. It contains high organic and carbon content which can be reused/diverted for useful products (like Biochar) that facilitate climate change mitigation. Biochar, a renewable carbon, is gaining importance and it opens up an area of research to explore on the properties and stability of biochar, its wide applications, impacts on soil characteristics, techno-economic details, carbon and nitrogen interactions of biochar-soil matrix, and emission control. This review addresses opportunities of biomass wastes for biochar production, various thermo-chemical reactions for preparation and its basics/mechanisms, properties of biochar and hydrochar, and gaps/operational challenges, and summarizes wide applications of biochar in soil improvement, climate change mitigation, energy production, waste management, and environmental remediation. The effect of physico-chemical parameters (temperature, heating rate, chemical composition, etc.) on the biochar production will help in valorizing this industry. The optimized process conditions involved in low temperature (torrefaction, microwave-assisted pyrolysis, hydrothermal carbonization), pyrolysis (Fast, Slow, Flash), gasification, and combustion processes for biochar, syngas, and bio-oil production are to be explored. The critical review on the biochar addition influence on CO2, CH4, and N2O emissions in various soil types and carbon sequestration is done here. The modification and activation of biochar are recently attractive due to their role in improving biochar quality and for expanding its applications. Limitations and future status of biochar production from biomass waste are highlighted. Biochar will be a promising solution as an alternative to fossil fuels, waste management, bioenergy, and combat climate change.

Keywords

Biochar, Biomass waste, Carbon, Climate change mitigation, Pyrolysis, Soil amendment

Australian policies on water management and climate change: are they supporting the sustainable development goals and improved health and well-being?

Globalization and Health

Toni Delany-Crowe, Dora Marinova, Matt Fisher, Michael McGreevy & Fran Baum 

Abstract

Background

Sustainable management of the natural environment is essential. Continued environmental degradation will lead to worsened health outcomes in countries and across generations. The Sustainable Development Goals (SDGs) provide a framework for viewing the preservation of natural environments and the promotion of health, well-being and health equity as interconnected pursuits. Within the SDG framework the goals of promoting environmental sustainability and human health are unified through attention to the social determinants of health and health equity (SDH/HE). This paper presents findings from a document analysis of all Australian environment sector policies and selected legislation to examine whether and how current approaches support progress toward achieving SDG goals on water, climate change, and marine ecosystems (Goals 6, 13 and 14), and to consider implications for health and health equity.

Results

Consideration of a broad range of SDH/HE was evident in the analysed documents. Related collaborations between environment and health sectors were identified, but the bulk of proposed actions on SDH/HE were initiated by the environment sector as part of its core business. Strengths of Australian policy in regard to SDGs 6, 13 and 14 are reflected in recognition of the effects of climate change, a strong cohesive approach to marine park protection, and recognition of the need to protect existing water and sanitation systems from future threats. However, climate change strategies focus predominately on resilience, adaptation and heat related health effects, rather than on more comprehensive mitigation policies. The findings emphasise the importance of strengthened cross-sectoral action to address both the drivers and effects of environmental degradation. A lack of policy coherence between jurisdictions was also evident in several areas, compounded by inadequate national guidance, where vague strategies and non-specific devolution of responsibilities are likely to compromise coordination and accountability.

Conclusions

Evidence on planetary health recognises the interconnectedness of environmental and human health and, as such, suggests that ineffective management of climate change and water pose serious risks to both the natural environment and human well-being. To address these risks more effectively, and to achieve the SDGs, our findings indicate that cross-jurisdiction policy coherence and national coordination must be improved. In addition, more action to address global inequities is required, along with more comprehensive approaches to climate change mitigation.

Keywords

Sustainable development goals, Planetary health, Natural environment, Social determinants of health, Well-being, Health equity, Climate change, Water

A review of policies and initiatives for climate change mitigation and environmental sustainability in Bangladesh

Environment, Development and Sustainability

Md. Monirul Islam Chowdhury, Syed Masiur Rahman, Ismaila Rimi Abubakar, Yusuf A. Aina, Md. Arif Hasan & A. N. Khondaker 

Abstract

Mitigating climate change via initiatives such as reducing emissions of greenhouse gases (GHG) and renewable energy (RE) generation helps in reducing environmental pollution, increasing efficiency, and saving costs in the energy industry. Bangladesh recently formulated some policies and initiatives for reducing GHG emissions that have been increasing at an alarming rate lately, which are driven largely by economic growth, energy security, and local environmental concerns. However, little is known about the impacts of the existing policies and initiatives on curbing GHG emissions and promoting environmental sustainability, especially from the agriculture and energy sectors that contribute 44% and 39% to the country’s net emissions, respectively. This study, therefore, reviews the extent of GHG emissions in the country and analyzes the country’s key policies and initiatives for mitigating climate change and promoting environmental sustainability. The key finding is that despite the existence of a national energy policy and initiatives such as RE development, rational and efficient use of energy, Intended Nationally Determined Contributions, clean development mechanism, international and private sector collaboration, GHG emissions are projected to continue to grow at high rates due to population growth, industrialization, energy consumption growth that outpace government initiatives to reduce emission levels. The paper concludes that good governance, behavioral transformation, and public awareness about climate change are vital steps for reducing GHG emissions and promoting environmental sustainability.

Keywords

Greenhouse gas emissions, Carbon trading, Renewable energy, Clean development mechanism, Solar home systems

A letter to my climate change skeptical neighbor: some thoughts about the coastal zone

Geo-Marine Letters

Claudio F. Neves

Abstract

The paper addresses the historical evidence in archaeology and geology about climate changes in the past, cites the contemporaneous scientific evidence about these changes in different settings, and enumerates effects which would enhance the consequences of such changes. A few examples of vulnerabilities of the coastal zone are commented, chosen because they are not so often recalled. The specific case of Brazilian coastal zone is briefly introduced. Finally, as its main purpose, the paper stresses the urgent need for action related to the unavoidable time delay for building responses to climate changes, regardless of their causes.

2018: The Hottest Summer in China and Possible Causes

Journal of Meteorological Research

Ting Ding, Yuan Yuan, Jianming Zhang & Hui Gao

Abstract

In 2018, China experienced the hottest summer since 1961. The maximum, mean, and minimum temperatures all reached the highest. Air temperatures in most regions were much higher than normal; in northern China especially, the temperature anomalies were above double of the standard deviations. Consistent variations of temperature anomalies appeared in the national mean and in northern China on different timescales from intraseasonal to annual, indicating that the above normal temperature in northern China contributed significantly to the record-breaking hot summer of entire China. Relationships among the high temperature in summer 2018, the tropospheric circulation, and the global sea surface temperatures (SSTs) are further analyzed. It is found that the intensified and more northward western Pacific subtropical high (WPSH), weakened Northeast China cold vortex (NECV), and positive geopotential height anomaly from northern China to the Sea of Japan resulted in the abnormally high temperature in summer 2018. From late July to mid August, the WPSH was stronger than normal, with its ridge line jumping to north of 40°N; meanwhile, the NECV was much weaker and more northward than normal; both of the two systems led to the persistent high temperature in northern China during this period. In addition, the SSTs in Kuroshio and its extension area (K-KE) in summer 2018 were also the highest since 1961 and the greatest positive SST anomaly in K-KE was favorable for the above normal geopotential height over North China-Northeast China-Japan at 500 hPa, giving rise to the exceptionally high temperature in northern China.

Keywords

Summer temperature, Western Pacific subtropical high (WPSH), Northeast China cold vortex (NECV), Atmospheric circulation, Kuroshio and its extension (K-KE)

The relevance of case studies in climate change research: a review of policy recommendations

SN Applied Sciences

Jose Daniel Teodoro, Donal S. O’Leary III, Siobhan E. Kerr, Eva Peskin & Julie A. Silva 

Abstract

In the age of big data, case studies build the foundation for the large-scale models that are increasingly being used for decision and policymaking. In this systematic literature review, we investigated the geographic, methodological, and conceptual characteristics of case studies in climate change science to evaluate the extent they provide policy recommendations to answer the questions: how can researchers best gather and report policy-relevant information for climate change adaptation, resilience, and/or recovery? What are the current themes within the literature, and how can these areas best advance as policy-relevant fields within climate change science? Findings highlight that policy recommendations were more robust, and significantly more likely, in case studies that employ participatory research methods; and geographic characteristics and use of theoretical frameworks are associated with providing policy recommendations. On the other hand, studies that focus on biophysical parameters of climate change offered weak or no policy recommendations. Thus, we conclude that local-level case study research can serve as validation and calibration data for large-scale models as long as they accurately represent the local values and perceptions of the people in the study area. We elaborate on the opportunities that exist in non-human, biophysical, research for communicating findings to policy-friendly audiences.

Keywords

Case study research, Systematic review, Climate change, Adaptation, Resilience

The function of international business frameworks for governing companies’ climate change-related actions toward the 2050 goals

International Environmental Agreements: Politics, Law and Economics

Shiro Hori & Sachi Syugyo 

Abstract

At the 22nd Conference of the Parties in 2016, the roles of non-state actors in global climate change were emphasized with a particular focus on international frameworks for corporate activities. Frameworks are intended to serve as international governance to help regulate corporate actions. However, companies’ climate-related activities are voluntary and produce several issues. The current research addresses the following questions: How do international business frameworks work for governing and enforcing the practical implementation of corporate activities? In the future, what functions are expected to work for business sectors ensuring the 2050 goals? This study examines the function of international business frameworks from different perspectives according to socio-environmental challenges, enforcement measures, organizers, and embedded problems. First, the development process of the motivation of corporate activities is examined, from Corporate Social Responsibility to the long-term vision. Second, we conduct a thorough review of the public and private regimes and identify three key components of private regimes to achieve effective, legitimate, and compliant functions: participation, accountability, and norms. These three components are not ensured by one regime, but by different types of international frameworks: industry associations, international organizations, and third parties. This study illustrates how these three types of frameworks work with the key components for enforcement. Furthermore, with increasing expectations for corporate actions, companies are creating their own visions and principles to attain the 2050 global goal. This paper demonstrates that the function of international frameworks is expected to strengthen in terms of supporting and governing a company’s actions.

Keywords

Climate change, International business frameworks, Corporate actions, Enforcement, 2050 Goal

Process intensification technologies for CO2 capture and conversion – a review

BMC Chemical Engineering

Abdullahi Adamu, Fernando Russo-Abegão & Kamelia Boodhoo

Abstract

With the concentration of CO2 in the atmosphere increasing beyond sustainable limits, much research is currently focused on developing solutions to mitigate this problem. Possible strategies involve sequestering the emitted CO2 for long-term storage deep underground, and conversion of CO2 into value-added products. Conventional processes for each of these solutions often have high-capital costs associated and kinetic limitations in different process steps. Additionally, CO2 is thermodynamically a very stable molecule and difficult to activate. Despite such challenges, a number of methods for CO2 capture and conversion have been investigated including absorption, photocatalysis, electrochemical and thermochemical methods. Conventional technologies employed in these processes often suffer from low selectivity and conversion, and lack energy efficiency. Therefore, suitable process intensification techniques based on equipment, material and process development strategies can play a key role at enabling the deployment of these processes. In this review paper, the cutting-edge intensification technologies being applied in CO2 capture and conversion are reported and discussed, with the main focus on the chemical conversion methods.

Keywords

Process intensification, CO2 conversion, Carbon capture, Photocatalytic, Electrochemical, Thermochemical, Plasma, Membrane, Renewable fuels

Predicting the effectiveness of protected areas of Natura 2000 under climate change

Ecological Processes

Mst. Umme Salma Nila, Carl Beierkuhnlein, Anja Jaeschke, Samuel Hoffmann & Md Lokman Hossain

Abstract

Background

Protected areas (PAs) are aimed to hold the environmental conditions that facilitate species and ecosystems to persist. PAs can become climatically unsuitable and unable to sustain their current number of species under climate change. The Natura 2000 (N2K) is the largest coordinated conservation tool assigned to maintain the long-term survival of Europe’s most significant species and habitats. In attempting to understand the effectiveness of PAs in the face of climate change scenarios, we tested two hypotheses: (1) PAs in the Alpine and the Boreal biogeographical regions will experience more newly emerged climate conditions (hotter and drier) compared to the climate representation of other biogeographical regions under future climate in Europe and (2) PAs in the Mediterranean and the Continental biogeographical regions will face more consistency in climate conditions due to less area of disappearing and novel climate in future.

Methods

Current climate data (1960–1990) and projections for 2050 and 2070 of PAs of N2K were extracted from WorldClim global climate data. Principal components analysis (PCA) was performed to construct climate space for the PAs across the biogeographical regions based on 19 climatic variables assessed at 5-km resolution. ArcMap 10.1 was used to map the location of the novel and disappearing climates.

Results

PAs in the Alpine region will experience more novel climate conditions in the future compared to other biogeographical regions. The future projections showed that 17.70% of the PAs in the Alpine region will experience novel climate by 2070. Considerable climate consistency was observed in the PAs in the Continental region compared to the other biogeographical regions. Our results showed that about 176 km2 of the selected PAs in the Continental region will face new emerging climate, while about 110 km2 will disappear under RCP 8.5 scenario. The prediction also revealed that in the Mediterranean region 08 PAs will experience novel climate and 786 km2 areas in these PAs will face disappearing climate by 2070. We found that fewer areas of PAs in the Boreal regions will experience disappearing climate in both the scenarios.

Conclusions

The portion of novel climate conditions can be seen as a future opportunity to assign new reserves for the species. Our study highlights the importance of conservation planning to increase the connectivity between PAs, identifying novel conservation zones to maximize representation of habitats during the emerging climatic changes as well as designing strategies, management, and monitoring of the individual PAs.

Keywords

Biodiversity conservation, Biogeographical region, Climate change, Climate scenarios, Natura 2000, Protected areas

How environmental treaties contribute to global health governance

Globalization and Health

Jean-Frédéric Morin & Chantal Blouin 

Abstract

Background

Recent work in international relations theory argues that international regimes do not develop in isolation, as previously assumed, but evolve as open systems that interact with other regimes. The implications of this insight’s for sustainable development remains underexplored. Even thought environmental protection and health promotion are clearly interconnected at the impact level, it remains unclear how global environmental governance interacts with global health governance at the institutional level. In order to fill this gap, this article aims to assess how environmental treaties contribute to global health governance.

Methods and results

To assess how environmental treaties contribute to global health governance, we conducted a content analysis of 2280 international environmental treaties. For each of these treaties, we measure the type and number of health-related provisions in these treaties. The result is the Health and Environment Interplay Database (HEIDI), which we make public with the publication of this article. This new database reveals that more than 300 environmental treaties have health-related provisions.

Conclusions

We conclude that the global environmental regime contributes significantly to the institutionalization of the global health regime, considering that the health regime includes itself very few treaties focusing primarily on health. When reflecting on how global governance can improve population health, decision makers should not only consider the instruments available to them within the realm of global health institutions. They should broaden their perspectives to integrate the contribution of other global regimes, such as the global environmental regime.

Keywords

Environmental agreements, Regime complex, Sustainable development, Global governance, Global health governance, International institutions, Treaties

Global Climate Change Outlook

Climate Change Impact on Environmental Variability in the Forest

Leonel Jorge, Ribeiro Nunes, Catarina Isabel, Rodrigues Meireles, Carlos José Pinto Gomes, Nuno Manuel Cabral de Almeida Ribeiro

Abstract

Climate change is a reality that affects the daily lives of communities around the world, mainly due to the increasingly frequent occurrence of extreme weather phenomena. However, there are other concerns caused by climate change, notably those caused by crop and forest crop growth cycles, and which will be addressed in a separate chapter. Thus, in this chapter the theme is framed, highlighting some examples of situations that occurred on a large scale and all over the world, related to profound changes in climate, with anthropic origin.

Keywords

Earth systems,  Anthropic actions , Case studies , Climate evolution 

Environmental regulations, enterprise productivity, and green technological progress: large-scale data analysis in China

Annals of Operations Research

Yuhuan Sun, Juntao Du & Shuhong Wang

Abstract

Environmental regulations can increase enterprise production costs and reduce production efficiency. This study analyzes the annual reports of 132 enterprises in 16 highly polluting industries over 9 years, which includes 52,272 data points comprising 1188 observed values from the 132 enterprises. We find that environmental regulations tend to increase the environment-friendly and non-environment-friendly research and development (R&D) inputs of the enterprises. Irrespective of the type of R&D input, the quality of the enterprise staff improves and their enthusiasm and initiative for work increases, resulting in increased enterprise production efficiency. Additionally, an increase in human capital significantly facilitates the improvement of enterprise staff quality, whereas, an expansion in the size of an enterprise does not tend to improve its productivity owing to decreasing returns to scale. This study further conducts a robustness test that replaces the explanatory variables with total factor productivity and resolves Malmquist efficiency indexes. The result of this robustness test supports the preliminary regression results. The conclusion of this study can help enterprises be competitive in global markets, and the results can serve as advice for the leads of enterprises.

Keywords

Environmental regulation, Production efficiency, Competition, Green technological progress, Large scale data analysis

Attitudes towards climate change migrants

Climatic Change

Marc Helbling

Abstract

While climate change has become a salient political and social issue in Western societies, we know relatively little about how these societies will react to one of the potentially important consequences of climate change: increasing migration flows. By means of a representative online survey in Germany, this paper therefore investigates for the very first time to what extent citizens in industrialized societies are willing to accept climate change migrants, especially in comparison with other groups of migrants and refugees, and the circumstances and principles under which they would accept them. The findings show that climate change migrants receive high support levels comparable with those enjoyed by political refugees (migrants who need special protection) and that contrast with attitudes towards economic migrants (who are often not seen as in need of special protection). We also see that people are more likely to accept justifications for taking climate change migrants when they realize that the expected number of migrants is relatively low. While arguments about morality, corrective justice, and a country’s capacity lead to similar acceptance rates in general, the latter argument plays a more important role for highly educated people and non-environmentalists than the former two. The findings of this study allow us to better prepare for potential conflicts that might emerge with increasing migration flows caused by climate change.

Keywords

Climate change, Migration, Prejudices

Come on, let’s make a plan—towards an 8th EU environmental action programme

ERA Forum

Ludwig Krämer

Environmental action programmes at EU level

Article 192(3) TFEU provides for the adoption of general EU environmental action programmes “setting out the priorities to be attained”. Such environmental action programmes (EAPs) were adopted at EU level since 1973.Footnote1 The environmental sector is thus the only sector of EU policy which worked throughout its existence—an environmental policy administration inside the EU Commission was established in 1973—with action programmes.  The text of the present Article 192(3) TFEU was introduced into the EC Treaty in 1993; since then, the action programmes are adopted by decisions by the European Parliament and the Council.

Article 192(3) TFEU does not impose on the EU institutions the obligation to adopt general EAPs, but requires majority decisions, should such a programme be adopted. The following contribution will shortly retrace the activities under the 7th EAP which will expire at the end of 2020. It will then discuss, whether it is politically necessary or useful to have an 8th EAP at EU level adopted. This will be followed by suggestions, what the content of such a possible action programme could be.

As regards the implementation of the actions of the 7th EAP, the Commission was asked to carry out an evaluation of the 7th EAP and present a proposal for an 8th EAP “in a timely manner with a view to avoiding a gap between the 7th EAP and the 8th EAP”. This evaluation was made in mid-2019 ,Footnote4 and was in time for the possible preparation of an 8th EAP: the legislative procedure for adopting the 6th EAP took 18 months, for the 7th EAP 12 months.

Decision 1386/2013 fixed nine priority objectives and declared that the “relevant EU institutions and the Member States are responsible for taking appropriate action with a view to delivery of the priority objectives”.Footnote6 An Annex to Decision 1386/2013 established the details of the priority objectives. However, this Annex did not contain specific actions to be undertaken, but simply detailed the different priority objectives. To give a concrete example: Paragraph 28 of the Annex provided that “the 7th EAP shall ensure that by 2020… (I) the loss of biodiversity and the degradation of ecosystem services, including pollination, are halted, ecosystems and their services are maintained and at least 15% of degraded ecosystems have been restored… This requires in particular (i) stepping up the implementation of the EU Biodiversity Strategy without delay, in order to meet its targets”.

Despite all efforts made at EU level, it is not possible to discover in these wordings an “action” which is to be undertaken. Rather an objective was fixed and a very vaguely formulated result to be reached was indicated, though no concrete measures were announced, such as the actors or bodies to undertake the measures, the delay by which the measures were to be proposed or adopted, means, including financial means, which were to be made available, monitoring provisions, transparency, reporting etc.

As the whole Decision and its annex were structured in this way, I concluded in 2014, following a detailed examination, that the 7th EAP was an “action programme without actions”,Footnote7 and constituted rather a form of environmental declaration. This opinion was shared by the European Economic and Social CommitteeFootnote8 and the Committee of the Regions.Footnote9

The implementation of the 7th EAP

An assessment of the measures taken between 2014 and mid-2019 confirms this conclusion. The Juncker Commission which took office at the end of 2014, presented annual work programmes which appeared to be programmes in favour of “big business, free trade and economic interests rather than for European citizens and their environment”;Footnote10 the protection of the environment was not of significant concern to the Juncker Commission. Environmental legislative proposals in the Commission’ annual work programmes for the years 2015 to 2019 were extremely rare, except in the area of climate change which progressively became a priority activity of the Commission and the whole EU; this paucity of initiatives did apply to the waste sector as well, where the Juncker Commission jumped on the idea to promote a circular economy—though until now, not much progress was realized beyond the increase of recovery and recycling rates of some waste streams and some administrative measures, such as reporting and planning.

Obviously, in its evaluation of the 7th EAP, the Commission perceived the 7th EAP and its implementation differently. It argued that the 7th EAP contained 35 sub-objectives and 60 concrete actions.Footnote11 It avoided, though, to enumerate these actions in detail and indicate, for each of them, what actions had been undertaken and what results were reached. It published a list of the main outputs since the adoption of the 7th EAPFootnote12 which includes the elaboration of studies, guidance documents, reports, communications and even mentions “continuous cooperation” with stakeholders as an output. This list constitutes, in this author’s assessment, rather a list of the activities of—mainly—the Directorate General “Environment” of the Commission, but not an assessment of the EAP actions which had been taken and their results.

For the rest, the Commission evaluated the 7th EAP against its five criteria for “better regulation”, i.e. effectiveness, efficiency, relevance, coherence and added value and declared itself, overall, satisfied with the resultsFootnote13 which is not, what an “action” programm is for. It also gave a sort of progress report on the realization of the nine priority objectives,Footnote14 without, though, stating what measures were taken or not taken and what results were reached.Footnote15

For the first three of the 7th EAP’s priority objectives, the European Environment Agency (EEA) developed a number of indicators to monitor the implementation of the 7th EAP.Footnote16 The indicators were either taken from the 7th EAP itself or from other EU statements; a reference was given in each case.

Air Pollution and Climate Change

Global Health Leadership

Jonathan Samet, Alistair Woodward

Abstract

In today’s modern world, air pollution and climate change are major contributors to mortality in many countries in the Pacific Rim. Much is now known about why air pollution and climate change have occurred, as well as the devastating negative impacts they have on human and planetary health. That effort is the focus of this case study. National and international efforts have had impact. This chapter outlines leadership in air pollution and climate change from multiple stakeholders, including researchers, government officials, and the international community. In the future, more efforts are needed in evidence-based advocacy to address these global health challenges. Climate change demands a response at a global scale and relies upon international research collaborations and energetic and skillful leadership at the science-policy interface.

Keywords

Evidence Epidemiology Air pollution Climate change Particulate matter 

A Review of Climate Change Attribution Studies

Journal of Meteorological Research

Panmao Zhai, Baiquan Zhou & Yang Chen 

Abstract

This paper reviews recent progress in climate change attribution studies. The focus is on the attribution of observed long-term changes in surface temperature, precipitation, circulation, and extremes, as well as that of specific extreme weather and climate events. Based on new methods and better models and observations, the latest studies further verify the conclusions on climate change attribution in the IPCC AR5, and enrich the evidence for anthropogenic influences on weather and climate variables and extremes. The uncertainty of global temperature change attributable to anthropogenic forcings lies in the considerable uncertainty of estimated total radiative forcing due to aerosols, while the uncertainty of precipitation change attribution arises from the limitations of observation and model simulations along with influences from large internal variability. In terms of extreme weather and climate events, it is clear that attribution studies have provided important new insights into the changes in the intensity or frequency of some of these events caused by anthropogenic climate change. The framing of the research question, the methods selected, and the model and statistical methods used all have influences on the results and conclusions drawn in an event attribution study. Overall, attribution studies in China remain inadequate because of limited research focus and the complexity of the monsoon climate in East Asia. Attribution research in China has focused mainly on changes or events related to temperature, such as the attribution of changes in mean and extreme temperature and individual heat wave events. Some progress has also been made regarding the pattern of changes in precipitation and individual extreme rainfall events in China. Nonetheless, gaps remain with respect to the attribution of changes in extreme precipitation, circulation, and drought, as well as to the event attribution such as those related to drought and tropical cyclones. It can be expected that, with the continual development of climate models, ongoing improvements to data, and the introduction of new methods in the future, climate change attribution research will develop accordingly. Additionally, further improvement in climate change attribution will facilitate the development of operational attribution systems for extreme events, as well as attribution studies of climate change impacts.

Keywords

climate change, detection and attribution, climate extremes, event attribution, optimal fingerprinting


A research roadmap for quantifying non-state and subnational climate mitigation action

Nature Climate Change

Angel Hsu, Niklas Höhne, Takeshi Kuramochi, Mark Roelfsema, Amy Weinfurter, Yihao Xie, Katharina Lütkehermöller, Sander Chan, Jan Corfee-Morlot, Philip Drost, Pedro Faria, Ann Gardiner, David J. Gordon, Thomas Hale, Nathan E Hultman, John Moorhead, Shirin Reuvers, Joana Setzer, Neelam Singh, Christopher Weber & Oscar Widerberg

Abstract

Non-state and subnational climate actors have become central to global climate change governance. Quantitatively assessing climate mitigation undertaken by these entities is critical to understand the credibility of this trend. In this Perspective, we make recommendations regarding five main areas of research and methodological development related to evaluating non-state and subnational climate actions: defining clear boundaries and terminology; use of common methodologies to aggregate and assess non-state and subnational contributions; systematically dealing with issues of overlap; estimating the likelihood of implementation; and addressing data gaps.

A qualitative comparative analysis of women’s agency and adaptive capacity in climate change hotspots in Asia and Africa

Nature Climate Change 

itya Rao, Arabinda Mishra, Anjal Prakash, Chandni Singh, Ayesha Qaisrani, Prathigna Poonacha, Katharine Vincent & Claire Bedelian 

Abstract

There is growing concern about sustainable and equitable adaptation in climate change hotspots, commonly understood as locations that concentrate high climatic variability, societal vulnerability and negative impacts on livelihood systems. Emphasizing gender within these debates highlights how demographic, socioeconomic and agro-ecological contexts mediate the experiences and outcomes of climate change. Drawing on data from 25 qualitative case studies across three hotspots in Africa and Asia, analysed using qualitative comparative analysis, we show how and in what ways women’s agency, or the ability to make meaningful choices and strategic decisions, contributes to adaptation responses. We find that environmental stress is a key depressor of women’s agency even when household structures and social norms are supportive or legal entitlements are available. These findings have implications for the effective implementation of multilateral agreements such as the United Nations Framework Convention on Climate Change, the Sendai Framework on Disaster Risk Reduction and the Sustainable Development Goals.

A cross-country study of collective political strategy: Greenhouse gas regulations in the European Union

Journal of International Business Studies

Sanjay Patnaik

Abstract

This study examines the outcome of collective political strategy across countries, within the context of new greenhouse gas regulations in the European Union. Drawing on the economic theory of regulation, I argue that collective political strategy can result in varied distortions of environmental policies, depending on the ideology of government actors, the electoral cycle and the type of prevalent bureaucratic regulatory system. An interesting finding in this regard is that left-leaning governments react more favorably to political strategies by industries. The study highlights the important role cross-country heterogeneity of political systems plays in influencing the outcomes of collective political strategies.

A framework for the joint institutionalization of climate change mitigation and adaptation in city administrations

Mitigation and Adaptation Strategies for Global Change

Christian Göpfert, Christine Wamsler & Werner Lang 

Abstract

Cities are key actors in reducing both the causes of climate change (mitigation) and its impact (adaptation), and many have developed separate mitigation and adaptation strategies and measures. However, in order to maximize outcomes, both scholars and practitioners are increasingly calling for more integrated and synergetic approaches. Unfortunately, related research remains scarce and fragmented, and there is a lack of systematic investigation into the necessary institutional conditions and processes. Against this background, this paper develops a framework to assess and support the joint institutionalization of climate adaptation and mitigation—here called adaptigation—in city administrations. This pioneering framework draws upon four key features of bureaucracies: organizational structure, visions and goals, actors, and technology and tools. Illustrated by pilot applications to the cities of Würzburg (Germany) and Mwanza (Tanzania), the framework provides a robust basis for future research, policy recommendations, and the development of context-specific guidelines for national and local decision-makers and officials. It highlights the importance of (i) clearly defined procedures for the implementation of adaptigation into urban planning processes (e.g., with the active involvement of stakeholders in the form of working groups or roundtable discussions), (ii) locally relevant goals and visions, established in collaboration with stakeholders, and (iii) the creation of mitigation and adaptation structures that are supported by the appropriate level of human resources, both within and outside city administrations. In this context, global, supranational, and national institutions play an important role in supporting institutionalization by providing targeted funding and promoting adaptigation, which requires the development of integrated goals, visions, and legislation.

Keywords

Climate policy integration, Institutionalization, Mainstreaming, Mitigation, Adaptation, Urban planning, Municipal planning