Blar i Geophysical Institute på tittel
Viser treff 606-625 av 1353
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Investigation of offshore wind turbine wakes by numerical modeling and full-scale measurements
(Doctoral thesis, 2024-04-30)Bak en vindturbin rotor som trekker kinetisk energi ut fra luftstrømmen, blir strømningsforholdene endret. Dette området kalles vindturbinens vake. Vaken er karakterisert av redusert vindhastighet og økt turbulensintensitet. ... -
An Investigation of Single Wind Turbine Wakes with Static LiDAR Wind Profilers
(Master thesis, 2016-06-01)Three static LiDAR wind profilers were deployed during the seven month field experiment WINTWEX-W at ECN's test site in Wieringermeer. The campaign was focused on capturing the structure and dynamics of the wake of a NORDEX ... -
Investigation of the dynamic response of a spar FOWT, and its sensitivity to variations in draft
(Master thesis, 2020-06-30)The objective of this thesis is to investigate how the dynamic properties of a spar supported FOWT change when the draft is reduced, and what draft is needed in order to support a 10 MW wind turbine. Design solutions of ... -
An investigation of the Faroe Shelf Front
(Master thesis, 2003)The water mass on the Faroe Shelf is distinct from the off-shelf water surrounding the shelf. This difference of water masses is reflected in the temperature and salinity distributions. The on-shelf water is colder and ... -
Investigation of the Gas Adsorption Properties in the Metal-Organic Framework: CPO-54-M (M= Co, Mg, Mn, Ni)
(Master thesis, 2019-08-31) -
An Investigation of the Grid Sensitivity in Large-Eddy Simulations of the Stable Boundary Layer
(Journal article; Peer reviewed, 2021)We revisit the longstanding problem of grid sensitivity, i.e., the lack of grid convergence in large-eddy simulations (LES) of the stable boundary layer. We use a comprehensive set of LES of the well-known Global Energy ... -
Investigation of the importance of wind field modelling for loads on a bottom fixed and a spar floater wind turbine
(Master thesis, 2019-10-02) -
Investigations on the External Forcings acting on the Convective Boundary Layer during the BLLAST Campaign by the CLASS Model
(Master thesis, 2017-06-20)Using both observed and modelled datasets from the 2011 Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST) campaign, the influence of large-scale forcings and surface heterogeneity is investigated for ten out of ... -
Irminger Sea deep convection injects oxygen and anthropogenic carbon to the ocean interior
(Peer reviewed; Journal article, 2016-10-27)Deep convection in the subpolar North Atlantic ventilates the ocean for atmospheric gases through the formation of deep water masses. Variability in the intensity of deep convection is believed to have caused large variations ... -
IWIN: the Isfjorden Weather Information Network
(Journal article; Peer reviewed, 2023)In an effort led by the University Centre in Svalbard (UNIS), with support from the Norwegian Meteorological Institute (MET Norway), the Isfjorden Weather Information Network (IWIN) is under development in the Isfjorden ... -
Karbondynamikk i Grønlandshavet observert av en Argobøye og en 1-D Blandingsmodell
(Master thesis, 2023-06-02) -
Key physical processes and their model representation for projecting climate impacts on subarctic Atlantic net primary production: A synthesis
(Journal article; Peer reviewed, 2023)Oceanic net primary production forms the foundation of marine ecosystems. Understanding the impact of climate change on primary production is therefore critical and we rely on Earth System Models to project future changes. ... -
Key Role of the Ocean Western Boundary currents in shaping the Northern Hemisphere climate
(Peer reviewed; Journal article, 2019)The individual impact of North Atlantic and Pacific Ocean Western Boundary Currents (OWBCs) on the tropospheric circulation has recently been studied in depth. However, their simultaneous role in shaping the hemisphere-scale ... -
The key role of topography in altering North Atlantic atmospheric circulation during the last glacial period
(Peer reviewed; Journal article, 2011-10-18)The Last Glacial Maximum (LGM; 21 000 yr before present) was a period of low atmospheric greenhouse gas concentrations, when vast ice sheets covered large parts of North America and Europe. Paleoclimate reconstructions and ... -
Klimaeffektar av redusert arktisk sommarisdekke: ein modellstudie
(Master thesis, 2006) -
Knowledge Gaps and Impact of Future Satellite Missions to Facilitate Monitoring of Changes in the Arctic Ocean
(Journal article; Peer reviewed, 2023)Polar-orbiting satellite observations are of fundamental importance to explore the main scientific challenges in the Arctic Ocean, as they provide information on bio-geo-physical variables with a denser spatial and temporal ... -
Konsepsjon, simulering og testing av en elektronisk styrt hydraulisk aktuator for styring av en motorventil
(Master thesis, 2018-08-23)Denne masteroppgaven tar for seg elektrohydraulisk styring av en motorventil i en medium speed motor. Det forsøkes å utnytte en eksisterende kamaksling til å drive en pumpe som skal gi trykk til en aktuator, slik at denne ... -
Korrigering av modellestimert nedbør ved hjelp av historisk data.
(Master thesis, 2010-06-01)I denne oppgåva er det sett på moglegheit for betring av modellestimert nedbør ved å korrigere modellerte nedbørsestimat ved hjelp av fleire ulike korreksjonsfaktorar som tar omsyn til ulike vêrtypar og nedbørsintensiteten. ... -
Laboratory Experiments on Internal Solitary Waves in Ice-Covered Waters
(Peer reviewed; Journal article, 2019)Internal solitary waves (ISWs) propagating in a stably stratified two‐layer fluid in which the upper boundary condition changes from open water to ice are studied for grease, level, and nilas ice. The ISW‐induced current ... -
Laboratory study of frazil ice accumulation under wave conditions
(Peer reviewed; Journal article, 2012-02-09)Ice growth in turbulent seawater is often accompanied by the accumulation of frazil ice crystals at its surface, forming a grease ice layer. The thickness and volume fraction of this ice layer play an important role in ...