to-measure ecosystem processes from the water’s surface to the deep seas of the Antarctic and Arctic Oceans using marker pigments. After completing her PhD, from 1998 she worked at Scripps Institution of [...] microplastic in Arctic sea ice in 2018, which attracted considerable media attention, Ilka Peeken has given frequent interviews and talks at events and in schools. Furthermore, she advises the Arctic Council on [...] Kiel, where, until 2008, she studied the effect of the micronutrient iron on algae in the Southern Ocean (in-situ iron fertilisation experiments “EisenEx” and “EIFEX”). In addition, she focused on which

species we work with in the Southern Ocean are krill, specifically Antarctic krill, Euphausia superba and the gelatinous pelagic tunicate Salpa thompsoni . In the Arctic Ocean, we work with the krill species

and O. Schrems, Tropospheric ozone depletion in polar regions: A comparison of observations in the Arctic and Antarctic. Tellus, 50B, 34-50, 1998. Frieß, U., J. Hollwedel, G. König-Langlo, T. Wagner, and [...] half-life time of 3.82 days. The main source is emission of 222 Rn from terrestrial soil, while the oceanic source strength (with two order of magnitude lower emission rates) can usually considered as negligible [...] However, in case of Neumayer continental sources are far away and our measurements indicate that oceanic emissions significantly contribute to the measured signal and especially to the seasonal maximum

Polar bear mother and cup in the Arctic ocean Automatic Marine Mammal Mitigation by Infrared Imaging Use of loud seismic airguns and naval sonars in marine surveys is feared to potentially injure whales [...] adjustment. ARK 27.3 Aug - Oct 2012 1563h operational Operation of FIRST-Navy infrared imager in the Arctic Ocean. (+) Successful operation of sensor for entire expedtion without any member of the IR team on [...] hindrance which is less prevalent in off-shore seismic and renewable energy construction settings. Arctic Ocean PS101 Sep-Oct 2016 Ship based operation of FIRST-Navy infrared imager on RV Polarstern. (+) O

roughly two-thirds of global sea-level rise; the remaining third is primarily due to the warming of the oceans, which causes seawater to expand. Accordingly, the development of our planet’s ice sheets and glaciers [...] and that ice-loss processes have been set in motion that will have lasting consequences. In the Arctic, temperatures are rising twice as quickly as the global average; as a result, the Greenland ice sheet’s

the impact of the Arctic on global climate. In addition to this major campaign, numerous field work activities take place every year in the mainland Arctic and in the adjacent Arctic Ocean. The coast plays [...] drifting Observatory for the Study of Arctic Climate ). From fall 2019 to fall 2020, the German research icebreaker POLARSTERN drifted frozen through the Arctic Ocean. The data collected will be valuable [...] Ecological processes in the terrestrial Arctic: Prof. Dr. Ulrike Herzschuh • Permafrost processes in the Arctic: Prof. Dr. Guido Grosse • Atmospheric processes in the Arctic: Prof. Dr. Markus Rex AWI Research

in various research areas: Climate and Geoscience (atmosphere, ocean, ice and land), Coastal and Shelf Sea Systems, Terrestrial Arctic Ecosystems and Permafrost, Marine and Polar Life, Aquaculture, Bionics

Ocean Eddies
In a new study, researchers from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) investigated the long-term changes in the Arctic Ocean eddy activity [...] study reveals a remarkable surge in Arctic eddy activity in a warmer climate, a trend that is probably unparalleled when compared to other regions across the global ocean.

The scarcely explored region to the north of Greenland was the area of study in the last of three Arctic expeditions undertaken by the Polarstern since the end of May 2025. In the largely untraveled waters [...] oceanographer Torsten Kanzow of the Alfred Wegener Institute were able to collect unique data on ocean circulation in the area. A chain of six moorings was also deployed to conduct autonomous measurements

space in the Arctic Ocean and next steps towards its comprehensive monitoring. European Polar Science Week 2020. Virtual Internagtional Conference. 30 Oct 2020 2019 Bracher A. (2019) The Ocean as Seen by [...] (2015) Hyperspectral ocean color imagery and applications to studies of phytoplankton ecology. In Breakout session "Hyperspectral science and applications for shelf and open ocean processes" of IOCS 2015 [...] Splinter Session 10 “Phytoplankton Community Structure from Ocean Colour: Methods, Validation, Intercomparisons and Applications”, International Ocean Color Science (IOCS) Meeting, Darmstadt, 8 May 2013 Bracher