Blar i Geophysical Institute på tittel
Viser treff 543-562 av 1228
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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 ... -
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 ... -
Laboratory study of initial sea-ice growth: properties of grease ice and nilas
(Peer reviewed; Journal article, 2012-07-10)We investigate initial sea-ice growth in an ice-tank study by freezing an NaCl solution of about 29 g kg−1 in three different setups: grease ice grew in experiments with waves and in experiments with a current and wind, ... -
Lagrangian matches between observations from aircraft, lidar and radar in a warm conveyor belt crossing orography
(Journal article; Peer reviewed, 2021)Warm conveyor belts (WCBs) are important airstreams in extratropical cyclones, often leading to the formation of intense precipitation and the amplification of upper-level ridges. This study presents a case study that ... -
Lagrangian Measurement of Waves and Near Surface Turbulence from Acoustic Instruments
(Peer reviewed; Journal article, 2015-12-02)We demonstrate high-resolution measurements of upper ocean flow and turbulence using a Lagrangian drifter. A spherical buoy as a quasi-wave following drifter mitigate the contaminations induced by wave orbital velocities ... -
The Lagrangian particle dispersion model FLEXPART version 10.4
(Peer reviewed; Journal article, 2019-12-02)The Lagrangian particle dispersion model FLEXPART in its original version in the mid-1990s was designed for calculating the long-range and mesoscale dispersion of hazardous substances from point sources, such as those ... -
Land Surface Data Assimilation of Satellite Derived Surface Soil Moisture : Towards an Integrated Representation of the Arctic Hydrological Cycle
(Doctoral thesis, 2019-10-21)The ability to accurately determine soil water content (soil moisture) over large areas of the Earth’s surface has potential implications in meteorology, hydrology, water and natural hazards management. The advent of ...