Blar i Research centres and projects på emneord "Oceanography"

Viser treff 1-20 av 30

    • Analysis of merged SMMR-SSMI time series of Arctic and Antarctic sea ice parameters 1978-1995 

      Bjørgo, Einar; Johannessen, Ola M.; Miles, Martin W. (Journal article; Peer reviewed, 1997-02-15)
      The most consistent means of investigating the global sea ice cover is by satellite passive microwave sensors, as these are independent of illumination and cloud cover. The Nimbus 7 Scanning Multichannel Microwave Radiometer ...

    • Barents Sea seasonal ice zone features and processes from ERS 1 synthetic aperture radar: Seasonal Ice Zone Experiment 1992 

      Sandven, Stein; Johannessen, Ola M.; Miles, Martin W.; Pettersson, Lasse H.; Kloster, Kjell (Journal article; Peer reviewed, 1999-07-15)
      Sea ice features and processes in the Barents Sea were studied during the Seasonal Ice Zone Experiment 1992 (SIZEX92), a dedicated ERS 1 satellite synthetic aperture radar (SAR) field campaign carried out in March 1992. ...

    • Coastal wind field retrievals from ERS synthetic aperture radar images 

      Korsbakken, E.; Johannessen, Johnny A.; Johannessen, Ola M. (Journal article; Peer reviewed, 1998-04-15)
      A unique series of European Remote Sensing Satellite (ERS) 1 and 2 C band synthetic aperture radar (SAR) images was obtained off the southern coast of Norway during the Coast Watch’95 experiment in September 1995. In this ...

    • Cover ERS-1/2 SAR monitoring of dangerous ice phenomena along the western part of Northern Sea Route 

      Johannessen, Ola M.; Sandven, Stein; Kloster, Kjell; Pettersson, Lasse H.; Melentyev, V. V.; Bobylev, Leonid P.; Kondratyev, K. Ya. (Journal article; Peer reviewed, 1997-08-01)

    • Diapycnal Mixing in a Conceptual Model of the Atlantic Meridional Overturning Circulation 

      Marzeion, Ben; Drange, Helge (Journal article, 2006)
      A three-box model of the Atlantic Ocean is used to examine the influence different parameterisations of the diapycnal mixing may have on the large scale dynamics of the ocean circulation. Special emphasis is given to the ...

    • Earth science – oceanography 

      Johannessen, Johnny A.; Sandven, Stein; Durand, Dominique (Chapter, 2002)
      Satellite oceanography began with the Gemini XII flight in November 1966. From a Hasselblad camera mounted in the pilot’s window large internal waves in the eastern tropical Atlantic were photographed via sunglitter for ...

    • An ERS 1 synthetic aperture radar image of atmospheric lee waves 

      Vachon, P. W.; Johannessen, Ola M.; Johannessen, Johnny A. (Journal article; Peer reviewed, 1994-11-15)
      An ERS 1 synthetic aperture radar (SAR) image of the island Hopen shows a distinct 7.6-km wavelength wave phenomenon near the island. This wave phenomenon is interpreted as the surface imprint on open water of atmospheric ...

    • Evaluating Global Ocean Carbon Models: The Importance of Realistic Physics 

      Doney, S. C.; Lindsay, K.; Caldeira, Ken; Campin, J. M.; Drange, Helge; Dutay, J. C.; Follows, M.; Gao, Yongqi; Gnanadesikan, A.; Gruber, N.; Ishida, A.; Joos, Fortunat; Madec, G.; Maier-Reimer, E.; Marshall, J. C.; Matear, R. J.; Monfray, P.; Mouchet, A.; Najjar, R.; Orr, J. C.; Plattner, G. K.; Sarmiento, J. L.; Schlitzer, R.; Slater, R.; Totterdell, I. J.; Weirig, M. F.; Yamanaka, Y.; Yool, A. (Peer reviewed; Journal article, 2004-09-15)
      A suite of standard ocean hydrographic and circulation metrics are applied to the equilibrium physical solutions from 13 global carbon models participating in phase 2 of the Ocean Carbon-cycle Model Intercomparison Project ...

    • Evaluation of ocean carbon cycle models with data-based metrics 

      Matsumoto, K.; Sarmiento, J. L.; Key, R. M.; Aumont, O.; Bullister, J. L.; Caldeira, Ken; Campin, J. M.; Doney, S. C.; Drange, Helge; Dutay, J. C.; Follows, M.; Gao, Yongqi; Gnanadesikan, A.; Gruber, N.; Ishida, A.; Joos, Fortunat; Lindsay, K.; Maier-Reimer, E.; Marshall, J. C.; Matear, R. J.; Monfray, P.; Mouchet, A.; Najjar, R.; Plattner, G. K.; Schlitzer, R.; Slater, R.; Swathi, P. S.; Totterdell, I. J.; Weirig, M. F.; Yamanaka, Y.; Yool, A.; Orr, J. C. (Journal article; Peer reviewed, 2004-04-02)
      New radiocarbon and chlorofluorocarbon-11 data from the World Ocean Circulation Experiment are used to assess a suite of 19 ocean carbon cycle models. We use the distributions and inventories of these tracers as quantitative ...

    • Future climate change: Modeling and scenarios for the Arctic 

      Kattsov, Vladimir M.; Källén, Erland; Cattle, Howard P.; Christensen, Jens; Drange, Helge; Hanssen-Bauer, Inger; Jóhannesen, Tómas; Karol, Igor; Räisänen, Jount; Svensson, Gunilla; Vavulin, Stanislav (Arctic Climate Impact Assessment (ACIA) Scientific Report;, Chapter, 2005-09)

    • Greenland Sea Odden sea ice feature: Intra-annual and interannual variability 

      Shuchman, Robert A.; Josberger, Edward G.; Russel, Catherine A.; Fischer, Kenneth W.; Johannessen, Ola M.; Johannessen, Johnny A.; Gloersen, Per (Journal article; Peer reviewed, 1998-06-15)
      The “Odden” is a large sea ice feature that forms in the east Greenland Sea that may protrude eastward to 5 °E from the main sea ice pack (at about 8 °W) between 73° and 77 °N. It generally forms at the beginning of the ...

    • A Hybrid Coordinate Ocean Model for shelf sea simulation 

      Winther, Nina Gjerde; Evensen, Geir (Journal article, 2006-03-03)
      The general circulation in the North Sea and Skagerrak is simulated using the Hybrid Coordinate Ocean Model (HYCOM). Although HYCOM was originally de- veloped for simulations of the open ocean, it has a design which should ...

    • Indian Ocean: Validation of the Miami Isopycnic Coordinate Ocean Model and ENSO events during 1958–1998 

      Haugen, Vibeke E.; Johannessen, Ola M.; Evensen, Geir (Journal article, 2002-05-25)
      In the Indian Ocean, in situ data are sparse both in time and space. Therefore, numerical models are one of the major tools for further understanding of the ocean circulation. We have implemented, validated, and done a 40 ...

    • Inverse Methods and Data Assimilation in Nonlinear Ocean Models 

      Evensen, Geir (Journal article, 1994-10-01)
      An overview is given of the current status of inverse methods and data assimilation for nonlinear ocean models. The inverse theory for time dependent dynamical models is formulated and the most promising solution methods ...

    • Measuring Ocean Salinity with ESA’s SMOS Mission – Advancing the Science 

      Berger, M.; Camps, A.; Font, Jordi; Kerr, Yann; Miller, J.; Johannessen, Johnny A.; Boutin, J.; Drinkwater, M. R.; Skou, N.; Floury, N.; Rast, M.; Rebhan, Helge; Attema, E. (Journal article, 2002-08)

    • Mesoscale modeling study of the oceanographic conditions off the southwest coast of India 

      Haugen, Vibeke E.; Johannessen, Ola M.; Evensen, Geir (Journal article; Peer reviewed, 2002-09)
      A high resolution model, using the Miami Isopycnic Coordinate Ocean Model (MICOM), has been implemented for the first time to study the seasonal circulation and coastal upwelling off the southwest Indian coast during 1974. ...

    • Microwave Study programs of Air-Ice-Ocean interactive processes in the Seasonal Ice Zone of the Greenland and Barents Seas 

      Johannessen, Ola M.; Campbell, William J.; Shuchman, Robert A.; Sandven, Stein; Gloersen, Per; Johannessen, Johnny A.; Josberger, Edward G.; Haugan, Peter Mosby (Geophysical Monograph 68, Chapter, 1992)
      Describes the use of satellite ice data into a working technology for the satellite data sets of the recent past and immediate future. Chapters cover basic observations, modeling, geophysical interpretation, and using data ...

    • Modelling of deep-sea gravity currents using an integrated plume model 

      Alendal, Guttorm; Drange, Helge; Haugan, Peter Mosby (Geophysical Monograph Series; 85, Chapter, 1994)

    • Modes of the southern extension of the East Madagascar Current 

      Siedler, G.; Rouault, M.; Biastoch, A.; Backeberg, Bjørn C.; Reason, Chris J.C.; Lutjeharms, J. R. E. (Journal article, 2008-11-04)
      Data sets from satellite observations and a nested high‐resolution model are used to study a source region of the Agulhas Current. Altimeter‐derived geostrophic surface currents are averaged over varying periods, providing ...

    • Observing the Ocean from Space: Emerging Capabilities in Europe 

      Johannessen, Johnny A.; Le Provost, Christian; Drange, Helge; Srokosz, Meric; Woodworth, Philip; Sclüssel, Peter; Le Grand, Pascal; Kerr, Yann; Wingham, Duncan; Rebhan, Helge (Chapter, 2001-12)
      During the first decade of the 21st century Earth observation from satellites will be faced with two major demands: provision of continuity missions and launch of new exploratory missions. This paper addresses European ...