Sökning: "klimatförändringarna"
Visar resultat 11 - 15 av 65 avhandlingar innehållade ordet klimatförändringarna.
11. Impact of climate change on integrated resource systems- Insights from selected East African case studies
Sammanfattning : With countries revisiting their climate pledges agreed at the conference of parties (COP) in Paris, in 2015, the discussion on the impact of changes in the long-term climate on natural resources has never been more relevant. Specifically, since the 2011 Bonn conference on the nexus between resource systems, the interlinkages between energy, water and land resource systems and their climatic connections are on the radar. LÄS MER
12. Land-atmosphere exchange of carbon in a high-Arctic wet tundra ecosystem
Sammanfattning : Arctic ecosystems play a key role in the terrestrial carbon (C) cycle, but spa-tially explicit data on the C exchange is scarce in these remote areas. The global warming is especially dominant in the Arctic, and these areas are vul-nerable to climate change. LÄS MER
13. Reflector Optimization for Low Concentration Photovoltaic-Thermal Solar Collectors
Sammanfattning : The alarming new global warming and increasing awareness related to climate change (mainly due to the high emissions of carbon dioxide) in recent decades linked all nations into a common cause, which requires ambitious efforts to combat climate change by adapting energy systems to its effects.The knowledge gain presented in this dissertation establishes the foundations for the development of a more efficient concentrating photovoltaic-thermal (PVT) solar collector. LÄS MER
14. Biophysical and Human Controls of Land Productivity under Global Change : Development and Demonstration of Parsimonious Modelling Techniques
Sammanfattning : Net primary production (NPP) serves as an indicator for plant-based resources such as food, timber and biofuel for human appropriation. It is defined by the annual production of plant matter and is mainly controlled by climate and human activities. Climate change in combination with human activities is altering NPP. LÄS MER
15. Energy efficiency in heritage buildings : Conservation approaches and their impact on energy efficiency measures
Sammanfattning : The impeding climate change challenge urges for a reduction of energy use in the built environment. Buildings account for nearly 40% of the total energy use and about 35% of the greenhouse gas emissions in Europe. LÄS MER
