Browsing Geophysical Institute by Title

Now showing items 1025-1044 of 1187

    • Super-resolution data assimilation 

      Barthelemy, Sebastien Jean-Claude; Brajard, Julien; Bertino, Laurent; Counillon, Francois Stephane (Journal article; Peer reviewed, 2022)
      Increasing model resolution can improve the performance of a data assimilation system because it reduces model error, the system can more optimally use high-resolution observations, and with an ensemble data assimilation ...

    • Supercooled Southern Ocean Waters 

      Haumann, F. Alexander; Moorman, Ruth; Riser, Stephen C.; Smedsrud, Lars H.; Maksym, Ted; Wong, Annie P. S.; Wilson, Earle A.; Drucker, Robert; Talley, Lynne D.; Johnson, Kenneth S.; Key, Robert M.; Sarmiento, Jorge L. (Journal article; Peer reviewed, 2020)
      In cold polar waters, temperatures sometimes drop below the freezing point, a process referred to as supercooling. However, observational challenges in polar regions limit our understanding of the spatial and temporal ...

    • Supermodeling Improving Predictions with an Ensemble of Interacting Models 

      Schevenhoven, Francine Janneke; Keenlyside, Noel Sebastian; Counillon, Francois Stephane; Gupta, Alok Kumar; Koseki, Shunya; Shen, Mao-Lin (Journal article; Peer reviewed, 2023)
      The modeling of weather and climate has been a success story. The skill of forecasts continues to improve and model biases continue to decrease. Combining the output of multiple models has further improved forecast skill ...

    • Supermodeling: Synchronization of Alternative Dynamical Models of a Single Objective Process 

      Duane, Gregory; Wiegerinck, Wim; Selten, Frank; Shen, Mao-Lin; Keenlyside, Noel (Chapter, 2018)
      Imperfect models of the same objective process give an improved representation of that process, from which they assimilate data, if they are also coupled to one another. Inter-model coupling, through nudging, or more ...

    • Suppressed eddy driving during southward excursions of the North Atlantic jet on synoptic to seasonal time scales 

      Madonna, Erica; Li, Camille; Wettstein, Justin (Peer reviewed; Journal article, 2019-09-05)
      Jet streams shape midlatitude weather and climate. The North Atlantic jet is mainly eddy‐driven, with frequent north–south excursions on synoptic time scales arising from eddy forcings and feedbacks. There are, however, ...

    • Surface drift in the South Pacific Gyre: Observations and simulations of drifters and plastic 

      Bergland, Astrid (Master thesis, 2022-08-12)
      The objective of this thesis is to investigate the residence times and behavior of microplastics and macroplastics in the southern Pacific Ocean. I use the open- source Lagrangian particle tracking framework OpenDrift to ...

    • Surface Ocean CO2 Atlas (SOCAT) gridded data products 

      Sabine, C. L.; Hankin, S.; Koyuk, H.; Bakker, D. C. E.; Pfeil, Benjamin; Olsen, Are; Metzl, N.; Kozyr, A.; Fassbender, A.; Manke, A.; Malczyk, J.; Akl, J.; Alin, S. R.; Bellerby, Richard; Borges, A.; Boutin, J.; Brown, P. J.; Cai, W.-J.; Chavez, F. P.; Chen, A.; Cosca, C.; Feely, R. A.; González-Dávila, M.; Goyet, C.; Hardman-Mountford, N.; Heinze, Christoph; Hoppema, M.; Hunt, C. W.; Hydes, D.; Ishii, M.; Johannessen, Truls; Key, R.M.; Körtzinger, A.; Landschützer, P.; Lauvset, Siv Kari; Lefévre, N.; Lenton, A.; Lourantou, A.; Merlivat, L.; Midorikawa, T.; Mintrop, L.; Miyazaki, C.; Murata, A.; Nakadate, A.; Nakano, Y.; Nakaoka, S.; Nojiri, Y.; Omar, Abdirahman; Padin, X. A.; Park, G.-H.; Paterson, K.; Perez, F. F.; Pierrot, D.; Poisson, A.; Rios, A.F.; Salisbury, J.; Santana-Casiano, J. M:; Sarma, V. V. S. S.; Schlitzer, R.; Schneider, B.; Schutser, U.; Sieger, R.; Skjelvan, Ingunn; Steinhoff, T.; Suzuki, T.; Takahashi, T.; Tedesco, K.; Telszewski, M.; Thomas, H.; Tilbrook, B.; Vandemark, D.; Veness, T.; Watson, A. J.; Weiss, R.; Wong, C.S.; Yoshikawa-Inoue, H. (Peer reviewed; Journal article, 2013-04-04)
      As a response to public demand for a well-documented, quality controlled, publically available, global surface ocean carbon dioxide (CO2) data set, the international marine carbon science community developed the Surface ...

    • A surface ocean CO2 reference network, SOCONET and associated marine boundary layer CO2 measurements 

      Wanninkhof, Rik; Pickers, Penelope A.; Omar, Abdirahman; Sutton, Adrienne; Murata, Akihiko; Olsen, Are; Stephens, Britton B.; Tilbrook, Bronte; Munro, David; Pierrot, Denis; Rehder, Gregor; Santana-Casiano, J. Magdalena; Müller, Jens D.; Trinanes, Joaquin; Tedesco, Kathy; O'Brien, Kevin; Currie, Kim; Barbero, Leticia; Telszewski, Maciej; Hoppema, Mario; Ishii, Masao; González-Dávila, Melchor; Bates, Nicholas R.; Metzl, Nicolas; Suntharalingam, Parvadha; Feely, Richard A.; Nakaoka, Shin-ichiro; Lauvset, Siv Kari; Takahashi, Taro; Steinhoff, Tobias; Schuster, Ute (Peer reviewed; Journal article, 2019-07-12)
      The Surface Ocean CO2 NETwork (SOCONET) and atmospheric Marine Boundary Layer (MBL) CO2 measurements from ships and buoys focus on the operational aspects of measurements of CO2 in both the ocean surface and atmospheric ...

    • Surface ocean pH and buffer capacity: past, present and future 

      Jiang, Li-qing; Carter, Brendan R; Feely, Richard A; Lauvset, Siv Kari; Olsen, Are (Peer reviewed; Journal article, 2019-12-09)
      The ocean’s chemistry is changing due to the uptake of anthropogenic carbon dioxide (CO2). This phenomenon, commonly referred to as “Ocean Acidification”, is endangering coral reefs and the broader marine ecosystems. In ...

    • Surface wave effects in the upper ocean and consequences for biological modeling 

      Röhrs, Johannes (Doctoral thesis, 2014-03-21)
      Effects of surface gravity waves on particle transport and currents in the upper ocean are studied using field observations and numerical models. Knowledge on upper ocean particle drift is needed for plankton transport ...

    • Surface-Forced Variability in the Nordic Seas Overturning Circulation and Overflows 

      Årthun, Marius (Journal article; Peer reviewed, 2023)
      Water mass transformation in the Nordic Seas and the associated overflow of dense waters across the Greenland-Scotland Ridge (GSR) acts to maintain the lower limb of the Atlantic meridional overturning circulation. Here, ...

    • The Svalbard branch of the West Spitsbergen Current: Hydrography, transport and mixing 

      Kolås, Eivind (Master thesis, 2017-08-01)
      Data from a 10 days shipboard survey in August 2015, northwest of Svalbard, are used to investigate the transport, structure and mixing of Atlantic water (AW) along the Svalbard branch and Yermak branch of the West Spitsbergen ...

    • Svingninger i klimaet i perioden 1910 til 2004 Hvilken innvirkning en global klimaendring har på lokalt klima og på tidspunktet for start på våren og vekstsesongen 

      Sivle, Anders Honningdal (Master thesis, 2005)

    • Synchronicity from synchronized chaos 

      Duane, Gregory (Peer reviewed; Journal article, 2015-03-27)
      The synchronization of loosely-coupled chaotic oscillators, a phenomenon investigated intensively for the last two decades, may realize the philosophical concept of “synchronicity”—the commonplace notion that related ...

    • Synoptic conditions and frontal dynamics during Cold Air Outbreaks in the Norwegian and Barents Sea 

      Jenssen, Marit Dagny Kristine (Master thesis, 2018-08-30)
      Cold Air Outbreaks (CAOs) in the Norwegian and Barents Sea are investigated using ERA Interim. The focus is on the synoptic conditions, heat fluxes, potential temperature tendencies and the frontogenesis at the onset of ...

    • Synoptic Conditions and Moisture Sources Actuating Extreme Precipitation in Nepal 

      Bohlinger, Patrik; Sorteberg, Asgeir; Sodemann, Harald (Peer reviewed; Journal article, 2017-12)
      Despite the vast literature on heavy‐precipitation events in South Asia, synoptic conditions and moisture sources related to extreme precipitation in Nepal have not been addressed systematically. We investigate two types ...

    • Synoptiske Lavtrykks Rolle i Vekselvirkningen mellom Stratosfære og Troposfære 

      Breiteig, Tarjei (Master thesis, 2005)

    • Synthesis, Characterization and Improvement of a Dye Sensitized Solar Cell 

      Sandberg, Sondre (Master thesis, 2017-06-20)
      Because of its light weight, low cost, flexibility and easy production techniques, Dye Sensitized Solar Cells (DSSCs) have become one of the promising PV-technologies for the future. Even though the DSSCs have been researched ...

    • Technical note: Turbulence measurements from a light autonomous underwater vehicle 

      Kolås, Eivind Hugaas; Mo-Bjørkelund, Tore; Fer, Ilker (Journal article; Peer reviewed, 2022)
      A self-contained turbulence instrument from Rockland Scientific was installed on a light autonomous underwater vehicle (AUV) from OceanScan Marine Systems and Technology Lda. We report on the data quality and discuss ...

    • Temperature Inversions in the Bergen Valley and Testing of Low-Cost Temperature and Air Quality Measuring Instruments 

      Seilen, Karoline (Master thesis, 2018-06-22)
      This study aimed at two goals, the testing of simple low-cost measurement sensors for temperature and air pollution, and the investigation of temperature inversions in the Bergen valley. For this we conducted a 13 months ...