Nye registreringer

  • Loop current variability as trigger of coherent gulf stream transport anomalies 

    Hirschi, Joël J.-M.; Frajka-Williams, Eleanor; Blaker, Adam T; Sinha, Bablu; Coward, Andrew; Hyder, Pat; Biastoch, Arne; Böning, Claus; Barnier, Bernard; Penduff, Thierry; Garcia, Ixetl; Fransner, Filippa; Madec, Gurvan (Journal article; Peer reviewed, 2019)
    Satellite observations and output from a high-resolution ocean model are used to investigate how the Loop Current in the Gulf of Mexico affects the Gulf Stream transport through the Florida Straits. We find that the expansion ...
  • North Atlantic weather regimes in δ18O of winter precipitation: isotopic fingerprint of the response in the atmospheric circulation after volcanic eruptions 

    GudlaugsdOttir, Hera; Sjolte, Jesper; Sveinbjörnsdóttir, Árny Erla; Werner, Martin; Steen-Larsen, Hans Christian (Journal article; Peer reviewed, 2019)
    Equatorial volcanic eruptions are known to impact the atmospheric circulation on seasonal time scales through a strengthening of the stratospheric zonal winds followed by dynamic ocean-atmosphere coupling. This emerges as ...
  • Ocean motion on the Yermak Plateau : - tidal and air-ocean interactions 

    Ersdal, Eli Anne (Doctoral thesis, 2020-11-02)
    This study focuses on the tidal and atmospheric dynamics controlling the overflow of warm Atlantic Water, crossing over the Yermak Plateau, which can be seen as a doorstep to the Arctic Ocean. The Arctic conditions are ...
  • Circulation along the northern slope of the Greenland-Scotland Ridge 

    Semper, Stefanie (Doctoral thesis, 2020-12-11)
    The Greenland-Scotland Ridge separates the subpolar North Atlantic from the Nordic Seas and constrains the flow of the upper and lower branches of the northern extremity of the Atlantic Meridional Overturning Circulation ...
  • Mechanisms and pathways of ocean heat anomalies in the Arctic-Atlantic region 

    Asbjørnsen, Helene (Doctoral thesis, 2020-12-10)
    Along the Atlantic water pathway, from the Gulf Stream in the south to the Arctic Ocean in the north, variability in ocean heat content is pronounced on interannual to decadal time scales. Ocean heat anomalies in this ...
  • Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer 

    Kral, Stephan (Doctoral thesis, 2020-11-20)
    In this thesis, consisting of five scientific papers, I investigate the potential of unmanned aircraft systems (UAS) in stable boundary layer (SBL) research, by developing and applying a new innovative observation strategy. ...
  • Water mass exchange, pathways and the mesoscale eddy field in the Lofoten Basin of the Norwegian Sea 

    Dugstad, Johannes Sandanger (Doctoral thesis, 2020-11-05)
    The Lofoten Basin situated in the Norwegian Sea, plays a central role in redistributing and modifying the warm Atlantic Water carried poleward with the Norwegian Atlantic Current. Increased residence time of the warm ...
  • Cold Air Mass Analysis of the Record-Breaking Cold Surge Event over East Asia in January 2016 

    Yamaguchi, Junpei; Kanno, Yuki; Chen, Guixing; Iwasaki, Toshiki (Peer reviewed; Journal article, 2019)
    An extreme cold surge event caused record-breaking low temperatures in East Asia during 20-25 January 2016. The planetary- and synoptic-scale feature of the event is investigated quantitatively using the isentropic cold ...
  • Constraining the oceanic uptake and fluxes of greenhouse gases by building an ocean network of certified stations: The ocean component of the Integrated Carbon Observation System, ICOS-Oceans 

    Steinhoff, Tobias; Gkritzalis, Thanos; Lauvset, Siv Kari; Jones, Stephen Daniel; Schuster, Ute; Olsen, Are; Becker, Meike; Bozzano, Roberto; Brunetti, Fabio; Cantoni, Carolina; Cardin, Vanessa; Diverrès, Denis; Fiedler, Björn; Fransson, Agneta; Giani, Michele; Hartman, Sue; Hoppema, Mario; Jeansson, Emil; Johannessen, Truls; Kitidis, Vassilis; Körtzinger, Arne; Landa, Camilla Stegen; Lefèvre, Nathalie; Luchetta, Anna; Naudts, Lieven; Nightingale, Philip D.; Omar, Abdirahman; Pensieri, Sara; Pfeil, Benjamin; Castano Primo, Rocio; Rehder, Gregor; Rutgersson, Anna; Sanders, Richard; Schewe, Ingo; Siena, Giuseppe; Skjelvan, Ingunn; Soltwedel, Thomas; van Heuven, Steven; Watson, Andrew (Peer reviewed; Journal article, 2019)
    The European Research Infrastructure Consortium “Integrated Carbon Observation System” (ICOS) aims at delivering high quality greenhouse gas (GHG) observations and derived data products (e.g., regional GHG-flux maps) for ...
  • An Atlantic-driven rapid circulation change in the North Pacific Ocean during the late 1990s 

    Wu, Chau-Ron; Lin, Yong-Fu; Wang, You-Lin; Keenlyside, Noel; Yu, Jin-Yi (Peer reviewed; Journal article, 2019-10-08)
    Interbasin interactions have been increasingly emphasized in recent years due to their roles in shaping climate trends and the global warming hiatus in the northern hemisphere. The profound influence from the North Atlantic ...
  • An Improved Surface Boundary Condition for Large-Eddy Simulations Based on Monin–Obukhov Similarity Theory: Evaluation and Consequences for Grid Convergence in Neutral and Stable Conditions 

    Maronga, Bjørn; Knigge, Christoph; Raasch, Siegfried (Peer reviewed; Journal article, 2020)
    Monin–Obukhov similarity theory is used in large-eddy simulation (LES) models as a surface boundary condition to predict the surface shear stress and scalar fluxes based on the gradients between the surface and the first ...
  • Arctic freshwater fluxes: sources, tracer budgets and inconsistencies 

    Forryan, Alexander; Bacon, Sheldon; Tsubouchi, Takamasa; Torres-Valdes, Sinhue; Garabato, Alberto C. Naveira (Peer reviewed; Journal article, 2019)
    The net rate of freshwater input to the Arctic Ocean has been calculated in the past by two methods: directly, as the sum of precipitation, evaporation and runoff, an approach hindered by sparsity of measurements, and by ...
  • Arctic amplification under global warming of 1.5 and 2 °C in NorESM1-Happi 

    Graff, Lise Seland; Iversen, Trond; Bethke, Ingo; Debernard, Jens Boldingh; Seland, Øyvind; Bentsen, Mats; Kirkevåg, Alf; Li, Camille; Oliviè, Dirk Jan Leo (Peer reviewed; Journal article, 2019)
    Differences between a 1.5 and 2.0 ∘C warmer climate than 1850 pre-industrial conditions are investigated using a suite of uncoupled (Atmospheric Model Intercomparison Project; AMIP), fully coupled, and slab-ocean experiments ...
  • Intercomparison of Small Unmanned Aircraft System (sUAS) Measurements for Atmospheric Science during the LAPSE-RATE Campaign 

    Barbieri, Lindsay; Kral, Stephan; Bailey, Sean; Frazier, Amy; Jacob, Jamey; Reuder, Joachim; Brus, David; Chilson, Phillip; Crick, Christopher; Detweiler, Carrick; Doddi, Abhiram; Elston, Jack; Foroutan, Hosein; Gonzáles-Rocha, Javier; Greene, Brian; Guzmán, Marcelo I.; Houston, Adam; Islam, Ashraful; Kemppinen, Osku; Lawrence, Dale; Pillar-Little, Elizabeth; Ross, Shane; Sama, Michael; Schmale, David; Schuyler, Travis; Shankar, Ajay; Smith, Suzanne; Waugh, Sean; Dixon, Cory; Borenstein, Steve; De Boer, Gijs (Peer reviewed; Journal article, 2019-05-10)
    Small unmanned aircraft systems (sUAS) are rapidly transforming atmospheric research. With the advancement of the development and application of these systems, improving knowledge of best practices for accurate measurement ...
  • Laboratory Experiments on Internal Solitary Waves in Ice-Covered Waters 

    Carr, Magda; Sutherland, P.; Haase, A.; Evers, K.-U.; Fer, Ilker; Jensen, Atle; Kalisch, Henrik; Berntsen, Jarle; Parau, E.; Thiem, Ø.; Davies, P.A. (Peer reviewed; Journal article, 2019)
    Internal solitary waves (ISWs) propagating in a stably stratified two‐layer fluid in which the upper boundary condition changes from open water to ice are studied for grease, level, and nilas ice. The ISW‐induced current ...
  • Key Role of the Ocean Western Boundary currents in shaping the Northern Hemisphere climate 

    Omrani, Nour-Eddine; Ogawa, Fumiaki; Nakamura, Hisashi; Keenlyside, Noel; Lubis, Sandro W.; Matthes, Katja (Peer reviewed; Journal article, 2019)
    The individual impact of North Atlantic and Pacific Ocean Western Boundary Currents (OWBCs) on the tropospheric circulation has recently been studied in depth. However, their simultaneous role in shaping the hemisphere-scale ...
  • Large‐scale regional model biases in the extra‐tropical North Atlantic storm track and impacts on downstream precipitation 

    Pontoppidan, Marie Louise Nielsen; Kolstad, Erik Wilhelm; Sobolowski, Stefan Pieter; Sorteberg, Asgeir; Changhai, Liu; Rasmussen, Roy (Peer reviewed; Journal article, 2019)
    Global climate models have circulation biases that the community aims to reduce, for instance through high‐resolution dynamical downscaling. We used the Weather Research and Forecasting model (WRF) to downscale both ...
  • Influences of Lake Malawi on the spatial and diurnal variability on local precipitation 

    Koseki, Shunya; Mooney, Priscilla A. (Peer reviewed; Journal article, 2019)
    We investigate how the intensity and spatial distribution of precipitation vary around Lake Malawi on a diurnal timescale, which can be valuable information for water resource management in tropical south-eastern African ...
  • Large decadal changes in air-sea CO2 fluxes in the Caribbean Sea 

    Wanninkhof, Rik; Triñanes, Joaquin A; Park, Guen-Ha; Gledhill, Dwight K.; Olsen, Are Christian Sviggum (Peer reviewed; Journal article, 2019)
    Sixteen years of surface water CO2 data from autonomous systems on cruise ships sailing in the Caribbean Sea and Western North Atlantic show marked changes on interannual timescales. The measured changes in fugacity (≈partial ...
  • Lateral Heat Transport in the Lofoten Basin: Near-Surface Pathways and Subsurface Exchange 

    Dugstad, Johannes Sandanger; Fer, Ilker; Lacasce, Joseph Henry; Sanchez de la Lama, Marta; Trodahl, Marta (Peer reviewed; Journal article, 2019)
    The Lofoten Basin in the Nordic Seas plays a central role in the Atlantic overturning circulation by acting as a reservoir for the warm and saline Atlantic Water flow toward the Arctic Ocean. The mass and heat exchange ...

Vis flere