Suchergebnisse

Fossil fuel combustion should be decreased in future years in order to lower the CO2 emissions of energy production. The reduction can be achieved by increasing the amount of CO2-neutral fuels in energy production. Here 6–13% of coal was substituted with industrial or roasted pellets in a pulverized fuel-fired power plant without making any changes to fuel grinding or low-NOx burners. The effect of pellet addition for the flue gas particles was studied with direct sampling from the boiler super heater area. Based on primary dilution ratio tests, transmission electron microscope images, and the natural electric charge of the particles, it was observed that particles in the flue gas are spherical and have been formed in the boiler at high temperatures. The pellet addition lowered the total particle number concentrations with all of the studied pellet–coal mixtures in comparison to the coal combustion. The 10.5% industrial pellet addition caused a second mode in the particle number size distribution. In addition, based on the chemical analysis of the collected size-fractioned particle samples, results indicated that the pellet addition did not increase the corrosion risk of the boiler. However, the changes in the particle number size distribution and total particle number concentration can affect the operation of electrostatic precipitators and flue gas cleaning. ; publishedVersion ; Peer reviewed

Since large-scale environmental disruptions have become chronic, policymakers need to consider the long-term consequences of urgent crisis decisions. We develop design principles for a decision platform addressing strategic environmental crisis management, by which we mean coordinated decisions during an environmental urgency that are sensitive to long-term path dependencies and policy errors. To enhance critical questioning of formal doctrines, the decision platform includes policymakers and sectoral experts as equal participants. The agenda for decisionmaking is structured around future scenarios to encourage the participants to imagine alternative ways of framing the decision problem. The agenda also discourages defensive heuristics with which decision-makers attempt to preserve their short-term reputation. The design principles for strategic environmental crisis management are based on urban experimentation. The barrier of implementation for similar experiments in other contexts is low because they assume no major overhaul in existing administration ; Peer reviewed

The influence of the Nordic countries on the European Union's (EU's) policy processes has been researched from various angles, but there is a lack of research that comprehensively examines all policy positions advanced by Nordic actors within a given policy context. This article introduces a new design for studying policy positions and influence in the EU and examines the phenomenon from a multilevel perspective using an original data set compiled in connection to three directives: the Floods Directive on the assessment and management of flood risks, the Environmental Liability Directive, and the Restriction of Hazardous Substances Directive. The analysis reveals that the Nordic countries follow a certain pattern of influencing EU policy that deviates from other states participating in the consultations. Nordic governmental actors exert a strong technical but weak directional influence in the chosen context but are, overall, more successful than Nordic organizational actors at influencing the policy process. ; Peer reviewed

In security and foreign policy discourse, environmental issues have been discussed increasingly as security threats that require immediate action. Yet, as the traditional security sector does not provide straightforward means to deal with climate change and other environmental issues, this has prompted concerns over undue securitisation and ill-placed extreme measures. We argue that an effective policy to address foreseeable environmental security threats can only be developed and maintained by ensuring that it remains resolutely within the domain of civil society. In this article, we consider the case of Finland, where the policy concept of comprehensive security has been presented as the official guideline for security and preparedness activities in different sectors. Comprehensive security aims to safeguard the vital functions of society through cooperation between authorities, business operators, organisations, and citizens. We analyse the opportunities and challenges of Finland's comprehensive security policy in addressing environmental changes through a three-level framework of local, geopolitical and structural security impacts. Our empirical evidence is based on a set of expert interviews (n = 40) that represent a wide range of fields relevant to unconventional security issues. We find that the Finnish comprehensive security model provides an example of a wide and inclusive perspective to security which would allow for taking into account environmental security concerns. However, due to major challenges in the implementation of the model, it does not fully incorporate the long-term, cross-sectoral, and cascading aspects of environmental threats. This weakens Finland's preparedness against climate change which currently poses some of the most urgent environmental security problems. ; Peer reviewed

1. Basic System 2. Evolution and Development 3. Fundamental Issues 4. Problem of Pollution 5. Population on Rise 6. The Animals 7. Planet of Earth 8. The Forestry 9. The Settlements 10. Educational Aspects 11. Value of Learning 12. Learning Programme 13. Evaluation Process 14. Technological Aspects 15. National Concerns 16. International Concerns.

The European Union adopted the Water Framework Directive (WFD) in the year 2000 to tackle the rapid degradation of freshwater systems. However, biological, hydromorphological, and physico-chemical water quality targets are currently not met, and identifying successful policy implementation and management actions is of key importance. We built a joint species distribution model for riverine fish in Flanders (Belgium) to better understand the response of fish communities to current environmental policy goals. Environmental covariates included physico-chemical variables and hydromorphological quality indices, while waterway distances accounted for spatial effects. We detected strong effects of physico-chemistry on fish species' distributions. Evaluation of fish community responses to simulated policy scenarios revealed that targeting a 'good' status, following the WFD, increases average species richness with a fraction of species (0.13-0.69 change in accumulated occurrence probabilities). Targeting a 'very good' status, however, predicted an increase of 0.17-1.38 in average species richness. These simulations indicated that riverbed quality, nitrogen, and conductivity levels should be the focal point of policy. However, the weak response of species to a 'good' quality together with the complexity of nutrient-associated problems, suggest a challenging future for river restoration in Flanders. ; Peer reviewed

There is growing interest – and need – among researchers and research organizations to contribute societally relevant work as well as to demonstrate the policy impact of their research. Diverse science-policy interfaces (SPIs) aim for scientifically informed policymaking by connecting scientists with policymakers. Effective SPIs need to be grounded in credibility, relevance and legitimacy; at the same time, however, they become part of the complex, politicised web of public policymaking. In this article we examine how forest researchers who participate in diverse SPIs in the context of the Global South navigate this complexity. We apply the concepts of credibility, relevance and legitimacy to explore the tensions researchers experience, as well as the strategies that researchers apply when responding to them. The research is based on in-depth interviews with 23 forest researchers and highlights (i) the tensions related to ensuring both policy and political relevance particularly in the context of research led SPIs; and (ii) tensions arising from the need to maintain credibility in the face of contestation and pressure to omit research critical of existing policies and practice and also the legitimacy of 'experts' operating within the SPI. Ensuring SPI effectiveness (research impact) also emerged as an additional source of tension. While multiple response strategies were identified, including knowledge co-production and strategic engagement with key policy actors, some of the tensions led to compromises, which we discuss. We conclude by highlighting the need to understand power relations in terms of both planning but also evaluating effective SPIs. ; Peer reviewed