2017. Figure 1: Mooring sites maintained during 2008-2009. The four major Arctic gateways (Davis, Fram, Bering Straits and BSO) are highlighted by orange circles. Each box shows length of observations [...] Tromsø, Norway and the Alfred Wegener Institute (AWI) in Bremerhaven, Germany for western and eastern Fram Strait, respectively; the Institute of Marine Research (IMR) in Bergen, Norway for the Barents Sea [...] von Appen; Dr. B. Rabe; Prof. Dr. T. Kanzow; Dr. M. Karcher AWI and Arctic boundary PIs in Davis , Fram, Bering Straits and Barents Sea opening (BSO)