Sökning: "klimatförändringar"

Visar resultat 26 - 30 av 181 avhandlingar innehållade ordet klimatförändringar.

1. 26. Analyzing Vegetation Trends with Sensor Data from Earth Observation Satellites

   Författare :Sadegh Jamali; Institutionen för naturgeografi och ekosystemvetenskap; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Change detection; Satellite sensor data; Time series analysis; Vegetation dynamics; Vegetation index;

   Sammanfattning : Abstract This thesis aims to advance the analysis of nonlinear trends in time series of vegetation data from Earth observation satellite sensors. This is accomplished by developing fast, efficient methods suitable for large volumes of data. LÄS MER

3. 27. Governing Climate Change under the Paris Regime : Meeting Urgency with Voluntarism

   Författare :Maria Jernnäs; Björn-Ola Linnér; Eva Lövbrand; Michele Betsill; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; global governance; governmentality; Paris Agreement; climate politics; Nationally Determined Contributions NDC ; nonstate actors; global styrning; governmentality; Parisavtalet; klimatpolitik; nationella klimat-planer NDC ; icke-statliga aktörer;

   Sammanfattning : The climate is changing. As the global mean temperature continues to rise, the immense urgency of addressing the climate change crisis is evident. LÄS MER

4. 28. A Changing Arctic Climate : Science and Policy in the Arctic Climate Impact Assessment

   Författare :Annika E. Nilsson; Björn-Ola Linnér; Sofie Storbjörk; Oran R. Young; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Arctic; climate; framing; knowledge production; regime; institution; actor network; co-production; indigenous knowledge; Arktis; klimat; kunskapsproduktion; regim; institution; aktörsnätverk; traditionell kunskap; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : Climate change has often been framed as a global issue but slow progress in the global climate negotiations and an increasing need to plan for local adaptation have made it increasingly salient to also discuss the potential of other arenas for climate policy and knowledge production. This dissertation analyzes the interplay between science and policy at the international regional level based on a study of an assessment of the impacts of climate change in the Arctic. LÄS MER

5. 29. Modelling the terrestrial carbon cycle – drivers, benchmarks, and model-data fusion

   Författare :Zhendong Wu; Institutionen för naturgeografi och ekosystemvetenskap; []
   Nyckelord :Global carbon cycle; Ecosystem modeling; Uncertainty; LPJ-GUESS; Traceability Framework; Model-data fusion; Climate data;

   Sammanfattning : The terrestrial ecosystem sequesters about one-third of anthropogenic emissions each year, thereby providing a critical ecosystem service that slows the rate of increase of atmospheric carbon dioxide and helps mitigate climate change. Observed atmospheric carbon dioxide concentrations exhibit a large inter-annual variability which is considered to be caused primarily by the response of the terrestrial ecosystem to climate change and anthropogenic activity. LÄS MER

7. 30. Lake Hydrodynamics and Pollution Transport under Climate Change : The Case of Lake Victoria

   Författare :Seema Paul; Henrik Ernstson; Zahra Kalantari; Abhijit Mukherjee; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bathymetry mapping; model verification; water balance; correlation; tracer transport; wind hydrodynamics; pollution and nutrient transport; climate effect; Mark- och vattenteknik; Land and Water Resources Engineering;

   Sammanfattning : A very small part of the total earth’s water is freshwater (only 2.5 %). Unfortunately, due to climate change and pervasive manmade activities, surface freshwater quality in many places of the world has become degraded. LÄS MER