Anders Schomacker
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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…
Hydroclimate intensification likely aided glacier survival on Svalbard in the Early Holocene Open
Accelerated Arctic warming and wetting has global impacts, as the region’s glaciers and ice caps respond to variations in temperature and precipitation, impacting global sea-level change. But as the observations needed to calibrate models …
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…
Early aerial expedition photos reveal 85 years of glacier growth and stability in East Antarctica Open
During the last few decades, several sectors in Antarctica have transitioned from glacial mass balance equilibrium to mass loss. In order to determine if recent trends exceed the scale of natural variability, long-term observations are vit…
Hydroclimate intensification aided Early Holocene Arctic glacier survival Open
Accelerated Arctic warming and wetting has global impacts, as the region`s glaciers and ice caps respond to changes in temperature (melt) and precipitation (growth), driving on-going sea-level change. However, as the observations needed to…
85 years of snowfall-driven ice sheet change in East Antarctica Open
Large-scale observational time series of pre-satellite era glacier changes in Antarctica are rare. In order to determine if recent trends are independent of natural variability, long-term observations are vital. Here we rediscover and expl…
Expanding glacier time series of Antarctica and Greenland using Soviet Era KFA-1000 satellite images Open
Long-term records of glaciers are more than ever crucial to understand their response to climate change. High-quality photogrammetric products, Digital Elevation Models (DEMs) and orthophotographs from early satellites are essential, as th…
Dynamics of East Antarctic glaciers from 1937-2017 analyzed using historical aerial expedition images Open
Since the beginning of the 20th century, various countries have carried out expeditions to Antarctica with the aim of claiming territory, reconnaissance as well as capturing aerial images for topographic mapping. Many of these image invent…
Glacier response to the Little Ice Age during the Neoglacial cooling in Greenland Open
In the Northern Hemisphere, an insolation driven Early to Middle Holocene Thermal Maximum was followed by a Neoglacial cooling that culminated during the Little Ice Age (LIA). Here, we review the glacier response to this Neoglacial cooling…
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…
A Driftwood‐Based Record of Arctic Sea Ice During the Last 500 Years From Northern Svalbard Reveals Sea Ice Dynamics in the Arctic Ocean and Arctic Peripheral Seas Open
We present a 500‐year history of naturally felled driftwood incursion to northern Svalbard, directly reflecting regional sea ice conditions and Arctic Ocean circulation. Provenance and age determinations by dendrochronology and wood anatom…
A driftwood-based record of Arctic sea ice during the last 500 years from northern Svalbard reveals sea ice dynamics in the Arctic Ocean and Arctic peripheral seas Open
We present a 500-year history of naturally felled driftwood incursion to northern Svalbard, directly reflecting regional sea ice conditions and Arctic Ocean circulation. Provenance and age determinations by dendrochronology and wood anatom…
Younger Dryas ice margin retreat in Greenland: new evidence from southwestern Greenland Open
To date the final stage in deglaciation of the Greenland shelf, when a contiguous ice sheet margin on the inner shelf transitioned to outlet glaciers in troughs with intervening ice-free areas, we generated cosmogenic 10Be dates from bedro…
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…
Ocean-rafted pumice constrains postglacial relative sea-level and supports Holocene ice cap survival Open
Distally deposited tephra from explosive volcanic eruptions can be a powerful tool for precise dating and correlation of sedimentary archives and landforms. However, the morphostratigraphic and chronological potential of ocean-rafted pumic…
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…
Younger Dryas ice-margin retreat in Greenland, new evidence from Southwest Greenland Open
Cosmogenic 10Be dates from bedrock knobs on six outlying tiny islands along a stretch of 300 km of the Southwest Greenland coast, indicate that the Greenland Ice Sheet (GrIS) margin here was retreating on the inner shelf close to the coast…
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…