this region, ocean currents from lower latitudes impact the sea water temperature, and the ocean is a heat storage affecting the local climate. Although Ny-Ålesund is situated in the high Arctic (78.9°N, 11 [...] Long Term Observations Surface Meteorology in the Arctic (AWIPEV Research Base in Ny-Ålesund, Spitsbergen) Ny-Ålesund from above. (Photo: Alfred Wegener Institut) Ny-Ålesund is located on a fjord at the [...] risen by 1.2° C per decade, while the strongest warming is observed during the winter season. The 'Arctic Amplification' of global warming is analysed under various aspects by measurements and model simulations

change. The towed high resolution camera system OFOS (Ocean Floor Observing System) is used to index megafauna and plastic litter on the Arctic sea floor. ROV To observe the sea-ice system from below [...] Light is important for the surface energy budget and the biological activity in the ice & the upper ocean. Radiation stations determine the fraction of incident light which is reflected by the surface or [...] novelty in under-ice robotics. BioOptical Platform Sinking particles control CO2 transport to the deep ocean. AWI and MARUM researchers developed the BioOptical Platform BOP, which combines a camera system and

Times' reports! Arctic climate change and the consequences for microalgae Contribution to the scientific expert reports section on the website of Scientific Year 2016/17 Resistant Arctic microalgae (De [...] (Deutschlandfunk, 25.1.2017) Radio interview on the responses of Arctic phytoplankton to climate change on the occasion of the Arctic Frontiers conference 2017, Deutschlandfunk. Tiny algae, hugely resilient [...] important source of food in the oceans. Dr Clara Hoppe of the Alfred Wegener Institute examines how changed living conditions as a result of climate change affect Arctic microalgae. Algal diet (Rheinpfalz

well as ocean observations (sea-surface temperature) to optimize the initial state of the sea ice-ocean system for short-term (up to 6 days) forecasts. ICEDAS was build around the sea ice-ocean model NAOSIM [...] predict the Arctic summer minimum sea-ice extent in September from the beginning of the melting season in May/June on. AWI is participating in the SIO since 2008 by using a coupled sea-ice ocean model (NAOSIM) [...] However, this approach neglects all feedback of the sea ice-ocean system onto the atmosphere. This year (2015) the initial state of the sea ice-ocean model has been constrained by sea-ice observations in a

Grant Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) (2021-2024) The main goal of the Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) project is [...] this end, caves and permafrost exposure will be studied in East Siberia along a transect from the Arctic Ocean to the Lake Baikal. The objectives of the project are to: (i) Reconstruct (a) mean interglacial [...] to provide a comprehensive description of the present-day Arctic water cycle and related key exchange processes between the atmosphere, ocean, and sea ice, using both instrumental data and climate simulations

suitable ice floe, where they will set up the research camp for their one-year-long drift through the Arctic Ocean. Consequently, one of the most important milestones in the expedition has been reached ahead of

Extent of the Arctic ice sheets during the last glacial (Graphic: Catalina Gebhardt) In contrast to the continent Antarctica, the Arctic region consists of a large marine basin. Therefore, Arctic ice sheets [...] Siberia-Chukchi Ice Sheet. During their maximum extent, these ice sheets reached far into the Arctic Ocean, and signs of glacial overprint can be found as far north as at the North Pole. Many studies have [...] sheet is found on Greenland, but in the past, several other ice sheets covered large areas of the Arctic realm. The most important ones were the Laurentide Ice Sheet on North America, the Svalbard-Barents

parameters in the ice-covered, central Arctic Ocean. The concurrent recording of physical, biological and biogeochemical measurements in the atmosphere, sea-ice and ocean for time periods of several months [...] observatory (Graphic: Alfred-Wegener-Institut) The properties of the atmosphere, sea-ice and the polar oceans, and feedbacks between these domains play an important role in global climate. At the same time, [...] Nicolaus @ awi.de Prof. Dr. Benjamin Rabe +49(471)4831-2403 Benjamin.Rabe @ awi.de Deployment of an ocean profilers in the sea-ice (Photo: Alfred-Wegener-Institut)

The role of clouds and warm air masses from the open ocean for the rapid warming of the Arctic is at the heart of a recent Alfred Wegener Institute project on Svalbard. The researchers are applying a new

fate of the Arctic Ocean in times of climate change Link to project webpage ARJEL To better understand the role of jellyfish in Arctic seas, the Helmholtz Young Investigators Group ARJEL (ARctic JELlifish) [...] Effect in the Arctic Ecosystem – is to assess the consequences of the decline in silicic acid concentration in the inflow of North Atlantic water into the Eurasian Arctic for the Arctic marine ecosystem [...] project webpage SO-CLIM Linkt to project webpage oceanPeak ERC Starting Grant OceanPeak COLDSPOT The project investigates where and why Arctic soils act as sinks for methane and nitrous oxide. link project