Sökning: "rekonstruktion av tidigare klimat"
Hittade 5 uppsatser innehållade orden rekonstruktion av tidigare klimat.
1. Reconstructing Past Climate by Using XRF and Loss of Ignition on Loess from Adventdalen, Svalbard : Rekonstruktion av tidigare klimat genom attanvända XRF analys och antändningsförlust på lössavlagringar från Adventdalen, Svalbard
Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : By analyzing the texture, composition and chemical composition of loess soils, the reconstruction ofpast climate regimes is enabled, which can improve our understanding of current and future climatechange. Properties such as grain size and composition, mineralogy, organic matter and chemicalcomposition can provide information about which environmental factors were present during thedeposition of the sediment, which can lead to a detailed picture of the climate history of a site. LÄS MER
2. Reconstructing Past Climate by Grain Size and Magnetic Susceptibility Analysis of Belgium Loess From the Late Quaternary
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Aeolian dust that gets deposited builds up loess sequences that cover 10% of the Earth's continents. Such sequences can be several metres thick with material deposited over thousands of years, and therefore act like archives of past climates. LÄS MER
3. Reconstruction of paleoclimate and loess provenance during the last glacial in Jersey using XRF analysis
Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : With our changing climate it becomes more vital to understand the processes that control climate change in order to better understand possible future shifts. By doing this, predictions can be made about future climates and better prepare us for them. LÄS MER
4. Using blue light reflectance from high-resolution images (6000 dpi) of Scots pine tree rings to reconstruct three centuries of Scottish summer temperatures
Kandidat-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknikSammanfattning : Advances in scanner technology have made it possible to obtain high resolution (6000 dpi) images of tree samples. Due to the images’ increased capability of resolving anatomical wood structures, the new technology could be of benefit to dendroclimatology. This study attempts to expand on Rydval et al. LÄS MER
5. Paleoclimate reconstructionfrom climate proxiesby neural methods
Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknikSammanfattning : In the present work, we investigate the capacity of machine learning to reconstruct simulated large scale surface temperature anomalies given a sparse observation field. Several methods are combined: self-organizing maps and recurrent neural networks of the temporal trajectory. LÄS MER
