Blar i Nansen Environmental and Remote Sensing Center (NERSC) på emneord "VDP::Matematikk og Naturvitenskap: 400"
Viser treff 1-20 av 38
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Application of a hybrid EnKF-OI to ocean forecasting
(Journal article, 2009-10-01)Data assimilation methods often use an ensemble to represent the background error covariance. Two approaches are commonly used; a simple one with a static ensemble, or a more advanced one with a dynamic ensemble. The latter ... -
Barents Sea seasonal ice zone features and processes from ERS 1 synthetic aperture radar: Seasonal Ice Zone Experiment 1992
(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. ... -
Cover ERS-1/2 SAR monitoring of dangerous ice phenomena along the western part of Northern Sea Route
(Journal article; Peer reviewed, 1997-08-01) -
Data assimilation for coastal zone monitoring and forecasting
(Elsevier oceanography series. (EuroGOOS publication no. 7), Chapter, 1997) -
Diapycnal Mixing in a Conceptual Model of the Atlantic Meridional Overturning Circulation
(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 ... -
Dr. Stein Sandven of NERSC on Arctic Regional Ocean Observing Systems
(Interview, 2008-10-17)http://www.sciencepoles.org/interview/arctic-regional-ocean-observing-systems -
Earth science – oceanography
(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 ... -
Formulation of the planetary boundary layer feedback in the Earth´s climate system
(Journal article, 2008)Recent publications have revealed that the state-of-the-art climate models are probably not sensitive enough to observed changes in the surface air temperature. This fact calls for the search of feedback mechanisms making ... -
Greenland Ice Sheet Elevation Ehange in Winter and Influence of Atmospheric Teleconnections in the Northern Hemisphere
(Journal article, 2009-11-16) -
Heat and Mass Transfer Laws for Turbulent Convective Flows in the Atmosphere over Leads in Ice Covered Oceans, C32A-1123, American Geophysical Union (AGU) Fall Meeting, 5-9 December, San-Francisco, USA
(Conference poster, 2005)Patches of open water (cracks, leads and polynias, Figure 1) in theice cover give major contributions to turbulent exchanges of heat, moisture, CO2 and other gases between the atmosphere and Polar oceans. Here, convective ... -
Heat in the Barents Sea: Transport, storage, and surface fluxes
(Journal article, 2010-01-11)A column model is set up for the Barents Sea to explore sensitivity of surface fluxes and heat storage from varying ocean heat transport. Mean monthly ocean transport and atmospheric forcing are synthesised and force the ... -
Hurricane-driven alteration in plankton community size structure in the Gulf of Mexico: A modeling study
(Journal article, 2009-04-03)This was the first study to analyze phytoplankton and zooplankton community size structure during hurricane passage. A three-dimensional biophysical model was used to assess ecosystem dynamics, plankton biomass, and plankton ... -
A Hybrid Coordinate Ocean Model for shelf sea simulation
(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 ... -
The impact of ensemble filter definition on the assimilation of temperature profiles in the tropical Pacific
(Journal article; Peer reviewed, 2005-10)The traditional analysis scheme in the Ensemble Kalman Filter (EnKF) uses a stochastic perturbation or randomization of the measurements which ensures a correct variance in the updated ensemble. An alternative so called ... -
Influence of horizontal model grid resolution on the simulated primary production in an embedded primary production model in the Norwegian Sea
(Journal article, 2009)The purpose of this paper is to investigate the influence of horizontal grid resolution in a physical model on an embedded primary production model. The area for the experiment was along the west coast of Norway, from 60◦N ... -
An intercomparison of large-eddy simulations of the stable boundary layer
(Journal article, 2005)Results are presented from the first intercomparison of Large-eddy simulation (LES) models for the stable boundary layer (SBL), as part of the GABLS (Global Energy and Water Cycle Experiment Atmospheric Boundary Layer ... -
Inverse Methods and Data Assimilation in Nonlinear Ocean Models
(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 ... -
Microwave Study programs of Air-Ice-Ocean interactive processes in the Seasonal Ice Zone of the Greenland and Barents Seas
(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
(Geophysical Monograph Series; 85, Chapter, 1994) -
Modes of the southern extension of the East Madagascar Current
(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 ...