Browsing Geophysical Institute by Title
Now showing items 847-866 of 1294
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On the Origins of Open Ocean Oxygen Minimum Zones
(Journal article; Peer reviewed, 2023)Recent work suggests that Oxygen Minimum Zones (OMZs) are sustained by the supply of oxygen-poor waters rather than the export of organic matter from the local surface layer and its subsequent remineralization inside OMZs. ... -
On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study
(Peer reviewed; Journal article, 2006-06-16)The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ... -
On the recent time history and forcing of the inflow of Atlantic Water to the Arctic Mediterranean
(Extended Abstract for The ACIA International Scientific Symposium on Climate Change in the Arctic, Conference lecture, 2004) -
On the seasonal signal of the Filchner overflow, Weddell Sea, Antarctica
(Peer reviewed; Journal article, 2014)The cold ice shelf water (ISW) that formed below the Filchner–Ronne Ice Shelf in the southwestern Weddell Sea, Antarctica, escapes the ice shelf cavity through the Filchner Depression and spills over its sill at a rate of ... -
On the use of a new mathematical formulation for loads- and motion analysis of a mooring line
(Master thesis, 2023-11-20)This master thesis investigates the use of a new mathematical model for calculating loads and dynamic motion of a mooring line. Current industry standard mooring analysis tools uses a lumped parameter modelling approach. ... -
On the use of car observations to evaluate and improve road weather forecasting
(Master thesis, 2023-06-01) -
On the Use of Dual Co-Polarized Radar Data to Derive a Sea Surface Doppler Model - Part 2: Simulation and Validation
(Journal article; Peer reviewed, 2023)The Doppler shift obtained from synthetic aperture radar (SAR) measurements comprises the combined contribution to the radial motion of the ocean surface induced by the sea state (wind waves and swell) and underlying surface ... -
On the utility of individual tendency output: Revealing interactions between parameterized processes during a marine cold air outbreak
(Journal article; Peer reviewed, 2021)Forecasts of marine cold air outbreaks critically rely on the interplay of multiple parameterization schemes to represent subgrid-scale processes, including shallow convection, turbulence, and microphysics. Even though ... -
One more step toward a warmer Arctic
(Peer reviewed; Journal article, 2005-09-09)This study was motivated by a strong warming signal seen in mooring-based and oceanographic survey data collected in 2004 in the Eurasian Basin of the Arctic Ocean. The source of this and earlier Arctic Ocean changes lies ... -
One-dimensional evolution of the upper water column in the Atlantic sector of the Arctic Ocean in winter
(Peer reviewed; Journal article, 2017-03)A one-dimensional model is employed to reproduce the observed time evolution of hydrographic properties in the upper water column during winter, between 26 January and 11 March 2015, in a region north of Svalbard in the ... -
A one-year comparison of new wind atlases over the North Sea
(Journal article; Peer reviewed, 2022)The New European Wind Atlas (NEWA) and the Norwegian hindcast archive (NORA3) database have become publicly available since the end of 2019 and mid-2021, respectively. They aim to model the long-term wind climatology with ... -
Open-source feature-tracking algorithm for sea ice drift retrieval from Sentinel-1 SAR imagery
(Peer reviewed; Journal article, 2016-04-26)A computationally efficient, open-source feature-tracking algorithm, called ORB, is adopted and tuned for sea ice drift retrieval from Sentinel-1 SAR (Synthetic Aperture Radar) images. The most suitable setting and parameter ... -
Open-source sea ice drift algorithm for Sentinel-1 SAR imagery using a combination of feature tracking and pattern matching
(Peer reviewed; Journal article, 2017-08-07)An open-source sea ice drift algorithm for Sentinel-1 SAR imagery is introduced based on the combination of feature tracking and pattern matching. Feature tracking produces an initial drift estimate and limits the search ... -
OpenDrift v1.0: A generic framework for trajectory modelling
(Peer reviewed; Journal article, 2018-04-13)OpenDrift is an open-source Python-based framework for Lagrangian particle modelling under development at the Norwegian Meteorological Institute with contributions from the wider scientific community. The framework is ... -
Operational algorithm for ice–water classification on dual-polarized RADARSAT-2 images
(Peer reviewed; Journal article, 2017-01-11)Synthetic Aperture Radar (SAR) data from RADARSAT-2 (RS2) in dual-polarization mode provide additional information for discriminating sea ice and open water compared to single-polarization data. We have developed an automatic ... -
Operational modelling to assess advective harmful algal bloom development and its potential to impact aquaculture
(Journal article; Peer reviewed, 2023)A particle tracking model is described and used to explore the role of advection as the source of harmful algal blooms that impact the Shetland Islands, where much of Scotland's aquaculture is located. The movement of ... -
Optimal location of charging stations for electric vehicles
(Master thesis, 2023-11-20)The electrification of road transportation requires a massive investment in charging infrastructure to keep up with the demand for underway charging. A substantial research effort is put into the problem of finding optimal ... -
Optimization of the Offshore Wind Inter-Array Cable Layout problem using heuristic based algorithms
(Master thesis, 2018-06-13)The current work presents an in-exact solution method used to identify feasible, and less costly inter-array cable layout for offshore wind farms. The solution method developed has been built considering the interests of ... -
Optimizing maintenance plans of offshore wind farms by calculating the likelihood of future turbine failures
(Master thesis, 2022-06-01)Although offshore wind power shows promising energy potentials, high cost of operating and maintaining offshore wind farms concerns investors. Different maintenance strategies are applied by wind farm operators to overcome ... -
Optimum power control of a battery energy storage system
(Master thesis, 2022-06-01)