Browsing Geophysical Institute by Title

Now showing items 743-762 of 978

    • The SailBuoy remotely-controlled unmanned vessel: Measurements of near surface temperature, salinity and oxygen concentration in the Northern Gulf of Mexico 

      Ghani, Mahmud Hasan; Hole, Lars R; Fer, Ilker; Kourafalou, Vassiliki H.; Wienders, Nicolas; Kang, HeeSook; Drushka, Kyla; Peddie, David (Peer reviewed; Journal article, 2014-09)
      An experimental deployment of a new type of unmanned vessel is presented. The Christian Michelsen Research SailBuoy, a remotely-controlled surface vehicle, sampled near-surface properties during a two-month mission in the ...

    • Satellite altimetry for Indian reservoirs 

      Verma, Kaushlendra; Nair, Akhilesh S.; Jayaluxmi, Indu; Karmakar, Subhankar; Calmant, Stephane (Journal article; Peer reviewed, 2021)
      Satellite radar altimetry has immense potential for monitoring fresh surface water resources and predicting the intra-seasonal, seasonal, and inter-annual variability of inundated surface water over large river basins. As ...

    • Satellite and Ground Observations of Snow Cover in Tibet during 2001–2015 

      Basang, Droma; Barthel, Knut; Olseth, Jan Asle (Peer reviewed; Journal article, 2017-11-22)
      The seasonal snow cover of the Tibetan Plateau exerts a profound environmental influence both regionally and globally. Daily observations of snow depth at 37 meteorological stations in Tibet and MODIS eight-day snow products ...

    • A Satellite Era Warming Hole in the Equatorial Atlantic Ocean 

      Nnamchi, Hyacinth C; Latif, Mojib; Keenlyside, Noel; Park, Wonsun (Journal article; Peer reviewed, 2020)
      Observations during the satellite era 1979–2018 only depict small sea surface temperature (SST) trends over the Equatorial Atlantic cold tongue region in boreal summer. This lack of surface warming of the cold tongue, ...

    • Satellite monitoring of algal blooms in Norwegian coastal waters 

      Folkestad, Are (Doctoral thesis, 2006-02-23)

    • Scaling the decay of turbulence kinetic energy in the free-convective boundary layer 

      El Guernaoui, Omar; Reuder, Joachim; Ezau, Igor; Wolf, Tobias; Maronga, Bjørn (Peer reviewed; Journal article, 2019)
      We investigate the scaling for decaying turbulence kinetic energy(TKE) in the free-convective boundary layer, from the time the surface heat flux starts decaying, until a few hours after it has vanished. We conduct a set ...

    • Sea ice cover in Isfjorden and Hornsund, Svalbard (2000–2014) from remote sensing data 

      Muckenhuber, Stefan; Nilsen, Frank; Korosov, Anton; Sandven, Stein (Peer reviewed; Journal article, 2016-01-19)
      A satellite database including 16 555 satellite images and ice charts displaying the area of Isfjorden, Hornsund, and the Svalbard region has been established with focus on the time period 2000–2014. 3319 manual interpretations ...

    • Sea ice thermohaline dynamics and biogeochemistry in the Arctic Ocean: Empirical and model results 

      Duarte, Pedro; Meyer, Amelie; Olsen, Lasse Mork; Kauko, Hanna Maria; Assmy, Philipp; Rösel, Anja; Itkin, Polona; Hudson, Stephen R.; Granskog, Mats A.; Gerland, Sebastian; Sundfjord, Arild; Steen, Harald; Hop, Haakon; Cohen, Lana; Peterson, Algot Kristoffer; Jeffery, Nicole; Elliott, Scott M.; Hunke, Elizabeth Clare; Turner, Adrian K. (Peer reviewed; Journal article, 2017-07)
      Large changes in the sea ice regime of the Arctic Ocean have occurred over the last decades justifying the development of models to forecast sea ice physics and biogeochemistry. The main goal of this study is to evaluate ...

    • Sea ice velocity in the Fram Strait monitored by moored instruments 

      Widell, K.; Østerhus, Svein; Gammelsrød, Tor (Peer reviewed; Journal article, 2003-10-04)
      The Fram Strait sea ice velocity was measured by means of a new method using moored Doppler Current Meters in the period 1996–2000. Almost 3 years of ice velocity observations near 79N 5W are analyzed. The average southward ...

    • Sea level variation in the Red Sea based on SODA data 

      Mohamad, Kamal Aldien Ibrahim Alawad (Master thesis, 2012-10-01)
      In this study we investigate the sea level variation in the Red Sea focusing on wind stress setup. 50-years dataset from 1957 to 2007 of sea level and wind stress from Simple Ocean Data Assimilation (SODA) data version ...

    • Sea surface gravity wave - wind interaction in the marine atmospheric boundary layer 

      Bakhoday Paskyabi, Mostafa; Zieger, S; Jenkins, Alastair David; Babanin, A. V.; Chalikov, D (Peer reviewed; Journal article, 2014)
      In this study, we investigate the turbulence structure over idealized wind-generated surface gravity waves with varying wave age using a wave-modified one-dimensional boundary layer model. To prescribe the shape of the ...

    • Sea surface pCO2 variability and air-sea CO2 exchange in the coastal Sudanese Red Sea 

      Ali, Elsheikh B.; Skjelvan, Ingunn; Omar, Abdirahman; Olsen, Are; De Lange, Tor; Johannessen, Truls; Elageed, Salma (Journal article; Peer reviewed, 2021)
      The dynamics of sea surface pCO2 (pCO2w) and air–sea CO2 exchange of the Sudanese coastal Red Sea has for the first time been studied over a full annual cycle (October 2014–October 2015) based on semi-continuous measurements ...

    • Sea Surface Temperature and Ocean Heat Content during Tropical Cyclones Pam (2015) and Winston (2016) in the Southwest Pacific Region 

      Chandra, Ashneel; Kumar, Sushil (Journal article; Peer reviewed, 2021)
      The sea surface temperature (SST) and upper ocean heat content (OHC) have been explored along the track of two tropical cyclones (TCs), TC Pam (2015) and TC Winston (2016). These TCs severely affected the islands of Vanuatu ...

    • Sea-state contributions to sea-level variability in the European Seas 

      Bonaduce, Antonio; Staneva, Joanna; Grayek, Sebastian; Bidlot, Jean-Raymond; Breivik, Øyvind (Journal article; Peer reviewed, 2020)
      The contribution of sea-state-induced processes to sea-level variability is investigated through ocean-wave coupled simulations. These experiments are performed with a high-resolution configuration of the Geestacht COAstal ...

    • Seasonal and Interannual Variations of Surface Nutrients and Hydrography in the Norwegian Sea 

      Ibrahim, Ahmed Saif Aldein Alsaid (Master thesis, 2012-10-01)
      Seasonal and interannual variations of surface nutrients and hydrography data obtained in period (1997-2010) by the Institute of Marine Research over three transects: Fugløya-Bjørnøya, Gimsøy and Svinøy located in the ...

    • The Seasonal and Regional Transition to an Ice-Free Arctic 

      Årthun, Marius; Onarheim, Ingrid H.; Dörr, Jakob; Eldevik, Tor (Journal article; Peer reviewed, 2021)
      The Arctic sea ice cover is currently retreating and will continue its retreat in a warming world. However, the loss of sea ice is neither regionally nor seasonally uniform. Here, we present the first regional and seasonal ...

    • Seasonal dynamics of the marine CO2 system in Adventfjorden, a West Spitsbergen fjord 

      Ericson, Ylva; Chierici, Melissa; Falck, Eva; Fransson, Agneta Ingrid; Jones, Elizabeth Marie; Kristiansen, Svein (Peer reviewed; Journal article, 2019-06-11)
      Time series of the marine CO2 system and related parameters at the IsA Station, by Adventfjorden, Svalbard, were investigated between March 2015 and November 2017. The physical and biogeochemical processes that govern ...

    • Seasonal Outflow of Ice Shelf Water Across the Front of the Filchner Ice Shelf, Weddell Sea, Antarctica 

      Darelius, Elin Maria K.; Sallee, Jean-Bapiste (Peer reviewed; Journal article, 2018-04)
      The ice shelf water (ISW) found in the Filchner Trough, located in the southern Weddell Sea, Antarctica, is climatically important; it descends into the deep Weddell Sea contributing to bottom water formation, and it blocks ...

    • Seasonal predictability of Kiremt rainfall in coupled general circulation models 

      Gleixner, Stephanie Nikola; Keenlyside, Noel; Demissie, Teferi Dejene; Counillon, Francois; Wang, Yiguo; Viste, Ellen (Journal article; Peer reviewed, 2017)
      The Ethiopian economy and population is strongly dependent on rainfall. Operational seasonal predictions for the main rainy season (Kiremt, June–September) are based on statistical approaches with Pacific sea surface ...

    • Seasonal predictions initialised by assimilating sea surface temperature observations with the EnKF 

      Wang, Yiguo; Counillon, Francois; Keenlyside, Noel; Svendsen, Lea; Gleixner, Stephanie; Kimmritz, Madlen; Dai, Panxi; Gao, Yongqi (Peer reviewed; Journal article, 2019-07-23)
      This study demonstrates that assimilating SST with an advanced data assimilation method yields prediction skill level with the best state-of-the-art systems. We employ the Norwegian Climate Prediction Model (NorCPM)—a ...