Search for dissertations about: "LGM"

Showing result 1 - 5 of 22 swedish dissertations containing the word LGM.

2. 1. High-resolution simulations of two cold palaeo climates in Europe : MIS 3 and LGM

   Author : Gustav Strandberg; Erik Kjellström; Qiong Zhang; Johan Nilsson; Anders Moberg; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palaeo climate; climate modelling; proxy data; LGM; MIS 3; meteorologi; Meteorology;

   Abstract : The study of past climate is important because it increases our understanding of how the climate system works. Past climate is often reconstructed by using proxies (that is observations of things that tell something about past climate, for example tree rings, pollen in lake sediments and fossils). READ MORE

4. 2. Geophysical Applications of Vegetation Modeling

   Author : Jed O Kaplan; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; Växtbiokemi; Plant biochemistry; CH4; CO2; stable isotopes; carbon cycle; wetland; ice core; methane; Holocene; mammoths; tundra; ice age; LGM; biogeography; biome; biogeochemistry; Vegetation model; Miljökemi; Physical geography; geomorphology; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

   Abstract : This thesis describes the development and selected applications of a global vegetation model, BIOME4. The model is applied to problems in high-latitude vegetation distribution and climate, trace gas production, and isotope biogeochemistry. READ MORE

5. 3. The thermohaline circulation during the Last Glacial Maximum and in the Present-Day climate

   Author : Maxime Ballarotta; Kristofer Döös; David Stevens; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ocean model; circulation; LGM; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

   Abstract : The thermohaline circulation (THC) corresponds to the large time- and spatial-scales ocean circulation associated with the transport of heat and salt, and is known to be an important factor controlling the climate variability. The large scales involved in the THC make it difficult to observe, and therefore the synergy of numerical models and climate proxy reconstructions is particularly relevant to study the characteristics of this circulation in the present and past climates. READ MORE

6. 4. Mended by masticates : A study of archaeogenetic proxies of migration, settlement and health in North Eurasian Mesolithic

   Author : Natalija Kashuba; Anders Kaliff; Mattias Jakobsson; Torun Zachrisson; Tiina Maria Mattila; Lehti Saag; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Archaeogenetics; Mesolithic population genetics; human identity; post-LGM hunter-gatherer societies; aDNA; metagenomics; masticates pitch resin; molecular paleopathology; Archaeology; Arkeologi; Biology with Specialisation in Human Evolution and Genetics; Biologi med inriktning mot människans evolution och genetik;

   Abstract : A joint archaeogenetic perspective integrates diverse lines of evidence from archaeology and paleogenetics to advance our understanding of human prehistory. In this thesis I contribute to the corpus of archaeogenetic data by producing and analysing ancient genomic data from osseous and masticated material. READ MORE

7. 5. Glacial history of Northeast Greenland: cosmogenic nuclide constraints on chronology and ice dynamics

   Author : Lena Håkanson; Kvartärgeologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Jameson Land; Store Koldewey; Scoresby Sund; Ice dynamics; Glacial history; Cosmogenic; Greenland Ice Sheet;

   Abstract : The aim of this thesis was to use cosmogenic exposure dating to investigating whether highly weathered landscapes in the Northeast Greenland fjord zone have developed during prolonged ice free conditions or have been preserved beneath cold-based ice. Previous work along the Northeast Greenland coast has presented two conflicting hypotheses for the extent of the Greenland Ice Sheet during the last glacial maximum (LGM). READ MORE