Browsing Geophysical Institute by Title
Now showing items 891-910 of 1299
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Phytoplankton abundance in the Barents Sea is predictable up to five years in advance
(Journal article; Peer reviewed, 2023)The Barents Sea is a highly biologically productive Arctic shelf sea with several commercially important fish stocks. Interannual-to-decadal predictions of its ecosystem would therefore be valuable for marine resource ... -
Polar low le Cygne: Satellite observations and numerical simulations
(Journal article, 2004)A polar low (PL) which occurred in October 1993 over the Norwegian Sea is investigated from an observational and a numerical point of view. This PL has several unique features: it developed early in the season, it lasted ... -
Polar low workshop
(Journal article, 2019) -
Polar lows – moist-baroclinic cyclones developing in four different vertical wind shear environments
(Journal article; Peer reviewed, 2021)Polar lows are intense mesoscale cyclones that develop in polar marine air masses. Motivated by the large variety of their proposed intensification mechanisms, cloud structure, and ambient sub-synoptic environment, we use ... -
Polycyclic aromatic hydrocarbons (PAHs) and their nitrated and oxygenated derivatives in the Arctic boundary layer: Seasonal trends and local anthropogenic influence
(Journal article; Peer reviewed, 2021)A total of 22 polycyclic aromatic hydrocarbons (PAHs), 29 oxy-PAHs, and 35 nitro-PAHs (polycyclic aromatic compounds, PACs) were measured in gaseous and particulate phases in the ambient air of Longyearbyen, the most ... -
Pore-scale studies of CO2-hydrate sealing mechanisms - effect of salinity
(Master thesis, 2023-08-03) -
A Possible Feedback Mechanism Involving the Arctic Freshwater, the Arctic Sea Ice, and the North Atlantic Drift
(Advances in Atmospheric Sciences;21( 5), Journal article, 2004-03-15)Model studies point to enhanced warming and to increased freshwater fluxes to high northern latitudes in response to global warming. In order to address possible feedbacks in the ice-ocean system in response to such changes, ... -
Potensialet for utnyttelse av vindkraft på Vannøya i Nord-Troms
(Master thesis, 2005) -
Potensiell bruk av SH-bølger for seismisk kartlegging av porefluid og litologi
(Master thesis, 2001) -
Potential and challenges of wind measurements using met-masts in complex topography for bridge design: Part I - Integral flow characteristics
(Journal article; Peer reviewed, 2021-03-10)The paper investigates the local topographic effect on the mean and integral flow characteristics recorded by sonic anemometers mounted on tall masts near the shoreline of three different Norwegian fjords. Two years of ... -
Potential and challenges of wind measurements using met-masts in complex topography for bridge design: Part II – Spectral flow characteristics
(Journal article; Peer reviewed, 2021)This study quantifies the influence of the local topography on sonic anemometer measurements mounted on tall met-masts deployed in Norwegian fjords. This assessment is done by analysing the second-order structure of ... -
Potential and limitations in estimating sensible-heat-flux profiles from consecutive temperature profiles using remotely-piloted aircraft systems
(Peer reviewed; Journal article, 2020)Profiles of the sensible heat flux are key to understanding atmospheric-boundary-layer (ABL) structure and development. Based on temperature profiling by a remotely-piloted aircraft system (RPAS), the Small Unmanned ... -
Potential changes in the connectivity of marine protected areas driven by extreme ocean warming
(Journal article; Peer reviewed, 2021)Projected future climate scenarios anticipate a warmer tropical ocean and changes in surface currents that will likely influence the survival of marine organisms and the connectivity of marine protected areas (MPAs) networks. ... -
Potential impact of tropopause sharpness on the structure and strength of the general circulation
(Journal article; Peer reviewed, 2022)The wintertime extratropical general circulation may be viewed as being primarily governed by interactions between Rossby waves and the background flow. These Rossby waves propagate vertically and meridionally away from ... -
Potential Influences of Volcanic Eruptions on Future Global Land Monsoon Precipitation Changes
(Journal article; Peer reviewed, 2021)The global monsoon system is of exceptional socioeconomic importance owing to its impacts on two-thirds of the globe’s population. Major volcanic eruptions strongly influence global land monsoon (GLM) precipitation change. ... -
Pre-bloom dynamics of the Subpolar North Atlantic microbial food web
(Master thesis, 2013-02-18)The aim of this study was to investigate the microbial planktonic food web in the pre- bloom period of the Subpolar North Atlantic Ocean. Through repeated visits to the Icelandic Basin, Norwegian Basin, and on the Shetland ... -
Predictable Variations of the Carbon Sinks and Atmospheric CO2 Growth in a Multi-Model Framework
(Journal article; Peer reviewed, 2021)Inter-annual to decadal variability in the strength of the land and ocean carbon sinks impede accurate predictions of year-to-year atmospheric carbon dioxide (CO2) growth rate. Such information is crucial to verify the ... -
Predicting next day’s production in run-of-river hydropower plants using machine learning
(Master thesis, 2023-06-01)This master thesis focuses on time series forecasting using machine learning to predict hourly production in run-of-river hydropower plants. As electrical energy cannot be easily stored, it must be produced and consumed ... -
Prediction of Harmful Algae Blooms Impacting Shellfish Farms in Norway
(Doctoral thesis, 2023-11-30)Skadelig algeoppblomstring (HAB) forårsaker alvorlig skade på økosystemet og menneskers helse, samt økonomiske konsekvenser for skalldyr og oppdrettsanlegg. Utviklingen av HABs prediksjonsmodeller har blitt økenende populart ... -
Predictive Analysis of Machine Learning Schemes in Forecasting of Offshore Wind
(Journal article; Peer reviewed, 2020)High variability of wind in the farm areas causes a drastic instability in the energy markets. Therefore, precise forecast of wind speed plays a key role in the optimal prediction of offshore wind power. In this study, we ...