key Arctic atmospheric and sea ice variables based on satellite and in-situ data sets (WP1) • Regional feedback mechanisms responsible for Arctic climate change (WP2) • Interaction between Arctic climate [...] routes (WP4) • Impact of Arctic sea ice and cyclones on biodiversity and productivity of the Arctic marine biota (WP5) WP1 will quantify the strength of climatic changes in the Arctic based on unique Russian [...] in-situ and satellite data for sea ice and ocean variables and atmospheric key parameters. WP2 will improve the regional feedbacks between the Arctic atmosphere, ocean, sea ice, and snow in a regional coupled

Fluorescence Line Height OC ------------------- Ocean Colour OC-CCI --------------Ocean Colour Climate Change Initiative OLCI ----------------- Ocean and Land Colour Instrument OMI ----------------- Ozone [...] Southern Ocean phytoplankton size classes to iron fertilization, Limnol. Oceanogr., 51, 1217– 1229. Liu, Y et al. (2018): Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly [...] of particulate absorption, scattering and attenuation coefficients in the surface ocean; Contribution of the Tara Oceans expedition. Methods in Oceanography 7, 52–62 (2013). Bracher A., Taylor B.B., Taylor

amounts of microplastic in arctic sea ice than ever before. However, the majority of particles were microscopically small. The ice samples from five regions throughout the Arctic Ocean contained up to 12,000 [...] patch in the Pacific Ocean, while in turn, the high percentage of paint and nylon particles pointed to the intensified shipping and fishing activities in some parts of the Arctic Ocean. The new study has

Arctic Ocean
Tiny gypsum crystals can make phytoplankton so heavy that they rapidly sink, hereby transporting large quantities of carbon to the ocean’s depths. Experts from the Alfred Wegener Institute [...] Institute recently observed this phenomenon for the first time in the Arctic. As a result of this massive algal transport, in the future large amounts of nutrients could be lost from the surface waters.

(ASSW) and other international Arctic conferences. As an observer on the Arctic Council, the most important forum on the Arctic, he worked with decision-makers from Arctic countries, and with representatives [...] the Arctic. He served on the planning committee for the International Polar Year 2007/2008 and numerous other committees involved in Arctic research. His duties included organising the annual Arctic Science [...] indigenous peoples in the Arctic. Since 2017, Volker Rachold has headed the German Arctic Office at the AWI and has advised federal ministries on matters concerning the Arctic. In 2018, his office was

Interview: Ocean Acidification and Fish Swimming in acidifying waters Scientists suspect that the ocean acidification is primarily endangering calcareous organisms such as corals and mussels. But what [...] about the fish having to swim in an ocean which is becoming increasingly acidic? Researchers are currently addressing this question in the national research program on ocean acidification, BIOACID II. Dr Felix [...] small extent by the current ocean acidification. In the interview, the physiologist explains why fish are also reacting sensitively to the reduction of the pH value of the oceans and how he is examining this

This increase of CO2 in the ocean upsets the carbonate chemistry of the ocean and causes the waters to become more corrosive. The images indicate that all of the Southern Ocean surface waters south of 60°S [...] (SOS)® The question of how the ocean ecosystem as a whole will react to ocean acidification can therefore not be answered conclusively. Does the current CBD report on ocean acidification reveal further gaps [...] interview. AWI research on ocean acidification Learn about interesting ocean acidification research projects at the Alfred Wegener Institute. Find out more Discover more... Ocean acidification at a glance

objects are fish. For his doctorate, he is researching into how warming and acidification of the oceans impact Arctic and Antarctic fish species. His special interest is focused on the fish brain. Australian [...] Schmidt now wishes to investigate whether fish in the polar regions react in a similar manner to ocean acidification with the assistance of NMR which is known as an MRT in hospitals. The NMR system in [...] where the next test subject is already waiting for Matthias Schmidt. (Kristina Bär) Links to AWI ocean acidification research Integrative Ecophysiology NMR Scientific Project BIOACID Marine Biogeosciences

lives in the temperate zones, but is transported to the Arctic with the North Atlantic Current. Calanus glacialis A species that lives primarily in Arctic shelf areas. Calanus hyperboreus A giant among copepods [...] snack – they are an important element of the food webs of the Arctic. Indirect consequences According to the experiments, therefore, ocean acidification alone presumably cannot have much impact on copepods [...] earlier in spring – that means at a time when the copepods are still dormant in the depths of the Arctic Ocean. Barbara Niehoff’s next research questions are, therefore: What do copepods eat if their favourite

calculated with the assistance of global ocean models”. Researchers know far less about how the ocean acidification will impact the sea organisms and the “ocean ecosystem”. Effects on calcifying sea inhabitants [...] affects the oceans. But it took ten years after the working group started its research for the term ocean acidification to be coined, thereby also attracting more attention to the phenomenon. Ocean acidification [...] Institut) Especially the polar regions are affected by ocean acidification. (Photo: Alfred Wegener Institut) More about ocean acidification AWI Ocean Acidification Research Integrative Ecophysiology Marine