modelling, GIS Alexandra Runge Multispectral time-series analyses with Landsat and Sentinel-2 to assess near-surface carbon pool dynamics in North Siberia The aim of my PhD project (University of Potsdam) is [...] thawing processes in North Siberia. The identified changes in permafrost landscapes help to describe the near-surface carbon pool dynamics. A focus of the project is to develop big data processing strategies
expanse, and with it nearly a quarter of its total surface area. And this is likely to worsen: if we consider the island as a whole, between 2010 and 2013 the entire coast receded nearly twice as quickly as [...] researchers during their work on the Siberian permafrost island. The banana-shaped island is located near the eastern Lena Delta. In the summer of 2012 it was still roughly 7.5 kilometres long and measured
(Russia) discovered a 70-cm-tall and likely more than 20-year-old larch tree on Samoylov Island, very near the German-Russian research station of the same name. The bright-green Dahurian Larch (Larix gmelinii) [...] them undetectable to satellite imaging – a fact that didn’t stop Katja Abramova (Lena Delta Reserve near Tiksi, Russia) from finding a smaller (only 30-cm-“tall”) larch in 2013, though it lost its crown
Newly formed barchan-type snow dune at Kohnen Station on 28 January 2006. The arrow indicates the near-surface wind direction (Photo: G. Birnbaum, AWI) The Summer Atmosphere Study at Kohnen Station ,
. It offers researchers ideal conditions for studying permafrost soils in the Lena Delta – either near the station itself, or on the surrounding islands. Discover what AWI scientists investigate in the
surface water to the deep ocean. In an analogous way it is also used for the study of resuspension rates near the deep-sea floor. 230Th and 231Pa We know the production rate of 230 Th (Half-life 75400 y) and [...] the open ocean. Shorter-lived 223 Ra (11 d) and 224 Ra (3.7 d halflife) trace rapid mixing processes near the coast whereas long-lived 226 Ra (1600 y halflife) is often more conservative. 227Ac 227 Ac is
objects experience is that to the planet itself. As the mass of the planet is much greater that of any near-surface mass it interacts with, the strength of attraction everywhere on Earth is felt to be the same;
due to its complexity and nonlinearity, limitating conventional approaches on predicting unobserved near future. The versatility of Machine Learning techniques allow it to be successfully applied in many
bring their researchers in the Antarctic back home. The Royal Air Force flew us to a military base near London. Then we took a commercial flight from Heathrow to Germany, and finally, a train trip that
data from 1977, they’re now losing 77 percent more ice than they did 40 years ago. At the same time, nearly all glaciers are now forcing their ice masses out to sea much faster than they did in the 1970s –