buried peat layer at Swanson river at a depth of 80 cm. Future analyses in the laboratory will show the age and potentially the reason for the formation and burial of this peat layer. Claire and Miriam were [...] Kenai and the Division of Natural Resources of Alaska for two additional field sites on the Kenai river mouth and at the Swanson river mouth (approx. 30 km North of Kenai). With these two additional transects [...] cover the fresh- to saltwater transition in the soil and vege- tation, since the transects from last week did not show any large gradient in a first analysis of the soil water. As a result, the new field

acoustic recording unit like the ones used by the PAM recorders in HAFOS. This takes advantage of the recorder now sitting just under the icy surface of the ice shelf, accessible by the Neumayer overwintering [...] Strait, respectively. See the maps to the right for of the recording sites occupied so far. Please note that not all sites are equipped with recorders at all time. Maps of the Arctic and Antarctic with [...] Tracking of Antarctic marine mammals) The aim of the PASATA project was to use time-synchronized passive acoustic recorders to localize vocalizing marine mammals in the Atka Bay area. Alongside the passive

subtropical ocean is expanding the tropics The observed anomaly of sea surface temperature during the last 5 years of the satellite age (2015-2019) in relation to the first 5 years of the satellite age (1982-1986) [...] [11 July 2018] The melting of glaciers on one side of the globe can trigger disintegration of glaciers on the other side of the globe, as has been presented in a recent paper by a team of AWI scientists [...] . Proceedings of the National Academy of Sciences of the United States of America (PNAS). doi: 10.1073/pnas.1714754115 . 2017 New findings on the past and future of sea ice cover in the Arctic Scientists

UN Decade of Ocean Science Spotlight on the Ocean It’s a world full of riddles: though the ocean shapes the face of our ‘blue planet’, covering 70 percent of its surface, we still know far too little about [...] safety. In the context of the Decade, all of this knowhow is to be made available worldwide. And last but not least, the goal is to raise awareness for the economic, social and cultural value of the ocean; [...] network that investigates open research questions and develops solutions for the preservation and sustainable use of the ocean. Its motto: “The science we need for the ocean we want”. After all, intact ocean

filmed thousands of nests of icefish of the species Neopagetopsis ionah on the seabed. The density of the nests and the size of the entire breeding area suggest a total number of about 60 million icefish [...] breeding at the time of observation. These findings provide support for the establishment of a Marine Protected Area in the Atlantic sector of the Southern Ocean. A team led by Autun Purser from the Alfred [...] Fascinating discovery
Near the Filchner Ice Shelf in the south of the Antarctic Weddell Sea, a research team has found the world's largest fish breeding area known to date. A towed camera system ph

carbon signal has levelled off, and the anthropogenic input of radiocarbon-free fossil CO2 into the atmosphere has become the dominant driver of the decrease of the 14C/C ratio in global atmospheric CO2 [...] with the atmosphere, namely the ocean and the terrestrial biosphere. According to Levin et al. (2010: Figure 7) the largest net uptake of bomb 14C by the world oceans occurred in the 1970s and was about [...] Δ14C-CO2 IN THE TROPOSPHERE Because the bulk of the fossil CO2 emissions are released in the NH, observed CO2 concentrations in the Northern are higher than in the Southern Hemisphere (Dlugokencky et al

to 2000, the later years of the long period of sustained growth that was observed from the early 1980s (when the global measurement network began) through to the end of the century. Then came the period [...] but the focus of higher growth was further south, around 40°N. Growth in 2015 was led by the northern tropics and the Arctic/Boreal zone lagged the rest of the world, but in 2016 the zone north of 50°N [...] shift in the carbon isotope ratio of the methane. The causes of the rise are not fully understood, and may include increased emissions and perhaps a decline in the destruction of methane in the air. Methane's

these orbits circle the Earth about 14 times per day. The swath is the area of the Earth which is observed by the satellite per orbit. Depending on the width of the swath, the satellite can reach daily [...] regions excluding the area South of 60°S for the Southern SOAI region, and the area North of 35°S for the Northern SOAI region, to exclude the influence of the extremely low coverage in the South (GOME-2 in [...] applications of the data sets derived and characterized in this thesis include: the estimation of the oceanic heat budget and the UV dose rate on marine organisms, the investigation of the sources of colored

play the conditions and the base of the ice for the speedy ice streams and did they change their behaviour in the past? Where can we find the oldest ice, with which we can reconstruct the climate of the [...] and ends with the composition of the subsurface below the ice, both of which govern flow behaviour of ice. In the end, we hope to make conclusions about how ice masses will change in the decades to come [...] million years ago? For all of these questions observations on site are essential. This begins with the determination of the ice thickness, continues with the inference of the crystal orientation fabric

Spectrogram of 20060419-0814_PALAOA (Photo: OZA AWI) A silent ocean Southern Ocean with sea ice (Photo: AWI) The Southern Ocean is one of the last pristine areas of the world’s oceans. Only few fishing and [...] Examples of underwater sounds in the polar oceans Map of the Atlantic sector of the Southern Ocean with all recording positions marked in red. (Photo: OZA AWI) The sound snippets below illustrate some [...] frequently in the vicinity of Elephant Island, off the northern tip of the Antarctic Peninsula, where the 20 Hz pulse also often contains a higher frequency component around 89 Hz. Spectrogram of 20130705-