Sofia E. Kjellman
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View article: Increased Ecosystem Productivity Boosts Methane Production in Arctic Lake Sediments
Increased Ecosystem Productivity Boosts Methane Production in Arctic Lake Sediments Open
Global estimates of methane (CH 4 ) emissions from lakes to the atmosphere rely on understanding CH 4 processes at the sediment‐water interface (SWI). However, in the Arctic, the variability, magnitude, and environmental drivers of CH 4 pr…
Shifts in Greenland interannual climate variability lead Dansgaard–Oeschger abrupt warming by hundreds of years Open
During the Last Glacial Period (LGP), Greenland experienced approximately 30 abrupt warming phases, known as Dansgaard–Oeschger (D–O) events, followed by cooling back to baseline glacial conditions. Studies of mean climate change across wa…
Shifts in Greenland interannual climate variability lead Dansgaard–Oeschger abrupt warming by hundreds of years Open
During the Last Glacial Period (LGP), Greenland experienced approximately 30 abrupt warming phases, known as Dansgaard–Oeschger (D–O) events, followed by cooling back to baseline glacial conditions. Studies of mean climate change across wa…
View article: Weichselian–Holocene glacial history of the Sjuøyane archipelago, northern Svalbard
Weichselian–Holocene glacial history of the Sjuøyane archipelago, northern Svalbard Open
The Sjuøyane archipelago is the northernmost land area of Svalbard; thus, it provides a window to study the terrestrial glacial history and dynamics of the Svalbard–Barents Sea Ice Sheet and complement marine geological studies in the regi…
Seasonal precipitation variability on Svalbard inferred from Holocene sedimentary leaf wax δ<sup>2</sup>H Open
Svalbard spans large climate gradients, associated with atmospheric circulation patterns and variations in ocean heat content and sea ice cover. Future precipitation increases are projected to peak in the northeast and to mainly occur in w…
Shifts in Greenland interannual climate variability lead Dansgaard-Oeschger abrupt warming by hundreds of years Open
During the Last Glacial Period (LGP), Greenland experienced approximately thirty abrupt warming phases, known as Dansgaard-Oeschger (D-O) Events, followed by cooling back to baseline glacial conditions. Studies of mean climate change acros…
Report Evaluating Safety Culture at UiT Open
The system of safety associated with lab and fieldwork at UiT The Arctic University of Norway’s Tromsø campus is in serious need of improvement. A volunteer working group of employees evaluated current safety conditions at NT-faculty and b…
Terrestrial and aquatic leaf wax hydrogen isotope proxy system models: Recent advances and remaining gaps Open
Constraining the hydrological response to past climate change can improve climate model predictions. These constraints are most useful when provided in variables that are native to climate models (e.g., precipitation or soil water isotope …
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records Open
High-latitude lakes are sensitive to climate change and store information about large-scale circulation changes\nand catchment-integrated processes. Lakes are mainly recharged by meteoric water, meaning that some lake\nsediment proxies may…
Evolution and temporal constraints of a multiphase postglacial rock slope failure Open
Large rock slope failures are temporal processes which act to modify the landscape after glacial retreat. The slope failure process often shows a lag time of thousands of years after deglaciation, with multiple failure events possible. Whi…
Ancient sedimentary DNA shows rapid post-glacial colonisation of Iceland followed by relatively stable vegetation until Landnám Open
Understanding patterns of colonisation is important for explaining both the distribution of single species and anticipating how ecosystems may respond to global warming. Insular flora may be especially vulnerable because oceans represent s…
Ancient sedimentary DNA shows rapid post-glacial colonisation of Iceland followed by relatively stable vegetation until Landnám Open
Understanding patterns of colonisation is important for explaining both the distribution of single species and anticipating how ecosystems may respond to global warming. Insular flora may be especially vulnerable because oceans represent s…
Holocene precipitation seasonality in northern Svalbard: Influence of sea ice and regional ocean surface conditions Open
Arctic precipitation is predicted to increase in the coming century, due to a combination of enhanced northward atmospheric moisture transport and local surface evaporation from ice-free seas. However, large model uncertainties, limited lo…
Late Quaternary glacier and sea‐ice history of northern Wijdefjorden, Svalbard Open
The deglaciation history and Holocene environmental evolution of northern Wijdefjorden, Svalbard, are reconstructed using sediment cores and acoustic data (multibeam swath bathymetry and sub‐bottom profiler data). Results reveal that the f…
Holocene development of subarctic permafrost peatlands in Finnmark, northern Norway Open
Subarctic permafrost peatlands are important soil organic carbon pools, and improved knowledge about peat properties and peatland sensitivity to past climate change is essential when predicting future response to a warmer climate and assoc…