week was characterized by intense station work both in the West Spitsbergen Current and in central Fram Strait.

lead to study areas northwest of Bear Island, south of Spitsbergen and in the central and eastern Fram Strait.

changes in the warm northward flow, we monitor the Atlantic Water in the West Spitsbergen Current in Fram Strait by use of an oceanographic mooring array since 1997. Surface waters are densified through cooling [...] storing) Beaufort Gyre, and the Transpolar Drift, which drives the freshwater towards Greenland and Fram Strait from where it is eventually exported to the subpolar North Atlantic. The Arctic freshwater [...] contributes to a destabilization of the Greenland ice streams. We observed Atlantic water warming in Fram Strait and this water is likely to affect the (presently) stable North East Greenland ice stream (NEGIS)

only (Fram Strait). The western, sea ice-dominated, part of Fram Strait proved to have short, late (middle May) and time varying phytoplankton blooms. At the marginal sea ice zone of the western Fram Strait [...] warm and salty Atlantic waters, experienced earlier (end of April) and longer blooms. In the eastern Fram Strait, stratification due to solar warming proved to act as a guiding factor for the the open ocean [...] Boetius, A. (2014) Influence of the physical environment on phytoplankton blooms: a case study in the Fram Strait , Journal of Marine Systems, 132 , pp. 196-207. doi: 10.1016/j.jmarsys.2013.11.008 , hdl:10013/epic

here on board assessing anthropogenic impacts on the marine ecosystem on our way from Bremerhaven to Fram Strait (and back) and at HAUSGARTEN observatory.

Isotope Facility Potsdam Stable Isotope Facility Bremerhaven Nutrient Facility Observatories Ocean: FRAM Water: COSYNA Meteorology Geophysics Ships Polarstern Heincke Uthörn Mya II Aade Stations Neumayer

ice conditions in the main export pathway of Arctic sea ice, the Fram Strait, and in the Lincoln Sea delivering the thickest ice to Fram Strait. Based on measurement data we will determine sea ice thickness

ice conditions in the main export pathway of Arctic sea ice, the Fram Strait, and in the Lincoln Sea delivering the thickest ice to Fram Strait. Based on measurement data we will determine sea ice thickness

determines the sea ice volume flux in Fram Strait region and other key areas. Results are used to quantify whether coupled sea ice ocean models are capable of reproducing Fram Strait sea ice volume fluxes correctly [...] of Arctic sea ice are changes of ice volume export rates through major gates of the Arctic, such as Fram Strait. The Sea Ice Physics group investigates to what extent ice volume loss through major export

Bacterioplankton Abundance Is Linked to Distinct Water Masses and Summertime Phytoplankton Bloom Dynamics (Fram Strait, 79°N). Frontiers in Microbiology, 12 (658803). Fadeev, E., Salter, I., Schourup-Kristensen [...] Engel, A., Piontek, J., Boetius, A., Bienhold, C. (2018): Microbial Communities in the East and West Fram Strait During Sea Ice Melting Season. Frontiers in Marine Science. doi: 10.3389/fmars.2018.00429 Rapp [...] , Boetius, A., Ramette, A. (2013): Biogeography of benthic bacteria at regional scale in the deep Fram Strait (LTER HAUSGARTEN, Arctic), PLOS One 8:9, doi: 10.1371/journal.pone.0072779 Further Links: