Blar i Geophysical Institute på tittel
Viser treff 471-490 av 1187
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Improved long-span bridge modeling using data-driven identification of vehicle-induced vibrations
(Journal article; Peer reviewed, 2020)The paper introduces a procedure to automatically identify key vehicle characteristics from vibrations data collected on a suspension bridge. The primary goal is to apply a model of the dynamic displacement response of a ... -
An Improved Surface Boundary Condition for Large-Eddy Simulations Based on Monin–Obukhov Similarity Theory: Evaluation and Consequences for Grid Convergence in Neutral and Stable Conditions
(Peer reviewed; Journal article, 2020)Monin–Obukhov similarity theory is used in large-eddy simulation (LES) models as a surface boundary condition to predict the surface shear stress and scalar fluxes based on the gradients between the surface and the first ... -
Improvement of aquaculture management practice by integration of hydrodynamic modelling
(Journal article; Peer reviewed, 2021)Aquaculture has grown to become an important export industry in Norway. The Norwegian Food Safety Authorithy (NFSA) is responsible for the management of the production zones designated to aquaculture. Fish diseases and ... -
Improving Radar-Based Precipitation Nowcasts with Machine Learning Using an Approach Based on Random Forest
(Journal article; Peer reviewed, 2020)A binary classification model is trained by random forest using data from 41 stations in Norway to predict the precipitation in a given hour. The predictors consist of results from radar nowcasts and numerical weather ... -
Improving weather and climate predictions by training of supermodels
(Peer reviewed; Journal article, 2019-11-28)Recent studies demonstrate that weather and climate predictions potentially improve by dynamically combining different models into a so-called “supermodel”. Here, we focus on the weighted supermodel – the supermodel's time ... -
In situ coastal observations of wave homogeneity and coherence
(Journal article; Peer reviewed, 2022)A better understanding of wave homogeneity, i.e. the spatial variations of the wave characteristics, and wave coherence in coastal areas and fjords is essential for the design and analysis of sea-crossing infrastructures, ... -
In-air one-point calibration of oxygen optodes in underway systems
(Journal article; Peer reviewed, 2021)Ships of opportunity are a frequently used platform in surface ocean carbon observations and estimating the annual ocean carbon sink. For understanding the drivers behind changes in the ocean carbon system, oxygen measurements ... -
Inconsistent Wind Speed Trends in Current Twentieth Century Reanalyses
(Peer reviewed; Journal article, 2019)Reanalysis data underpin much research in atmospheric and related sciences. While most reanalysis only cover the last couple of decades, National Oceanic and Atmospheric Administration (20CR) and European Centre for ... -
Increasing carbon inventory of the intermediate layers of the Arctic Ocean
(Peer reviewed; Journal article, 2014)Concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA), nutrients, and oxygen in subsurface waters of the central Arctic Ocean have been investigated for conceivable time trends over the last two decades. ... -
Indicators and trends of polar cold airmass
(Journal article; Peer reviewed, 2019)Trends and variations in the amount of cold airmass in the Arctic and the Northern Hemisphere are evaluated for the 60 year period, 1959–2018. The two indicators are (1) polar cold air mass (PCAM), which is the amount of ... -
Individual based modeling of North Atlantic common minke whale (Balaenoptera acutorostrata) migratory and foraging behaviour in the Nordic Seas
(Master thesis, 2014-09-01)The North Atlantic common minke whale (Balaenoptera Acutorostrata) is an abundant, top-level marine predator in the Nordic Seas and Barents Sea ecosystems whose large-scale migratory and foraging behaviors are widely ... -
Influence of Diabatic Effects and Tropopause Structure on Baroclinic Development
(Doctoral thesis, 2021-06-10)Midlatitude cyclones play an important role in midlatitude weather and global climate. While baroclinic instability is the dominant mechanism for their intensification, midlatitude cyclone development is also influenced ... -
The influence of input uncertainties on remotely sensed estimates of ocean primary productivity
(Doctoral thesis, 2011-06-10)Temporally and spatially dense estimates of oceanic phytoplankton net primary productivity (NPP), which are commonly derived by mathematical models from satellite observations of ocean colour, are a cornerstone of current ... -
Influence of Offshore Wind Farms on Primary Production in the North Sea
(Master thesis, 2016-06-01)The less studied environmental consequences of power production from offshore wind energy on the marine ecosystem dynamics, are studied through investigation of response on primary production. An idealized wind farm ... -
Influence of solar wind energy flux on the interannual variability of ENSO in the subsequent year
(Peer reviewed; Journal article, 2018)Previous studies have tended to adopt the quasi-decadal variability of the solar cycle (e.g. sunspot number (SSN) or solar radio flux at 10.7 cm (F10.7) to investigate the effect of solar activity on El Niño–Southern ... -
The influence of surface gravity waves on the injection of turbulence in the upper ocean
(Peer reviewed; Journal article, 2014-06-25)Observations were made in the near-surface layer, at about 8 m depth in 132 m deep water off the coast of Ålesund in Norway, for a duration of 2.5 months in late 2011. The measurement period covers the passage of two low ... -
Influence of synoptic weather patterns on solar irradiance variability in northern Europe
(Peer reviewed; Journal article, 2016-05)Observations have revealed strong variability of shortwave (SW) irradiance at Earth’s surface on decadal time scales, referred to as global dimming and brightening. Previous studies have attributed the dimming and brightening ... -
The influence of terrain on the mean wind flow characteristics in a fjord
(Journal article; Peer reviewed, 2020)Flow conditions in complex terrains such as fjords are highly three-dimensional and thus not properly captured by the wind flow models developed for homogenous terrains. In the present study, we explore the potential of ... -
The influence of the ocean and the stratosphere on climate persistence in the North Atlantic region
(Doctoral thesis, 2009-09-07)The North Atlantic Oscillation (NAO) is generally regarded to largely be a product of processes internal to the troposphere. This thesis investigates various aspects of how the NAO and related climatical fields are influenced ... -
The Influence of the Surface Humidity Flux on the Snow Isotopic Composition. Revisiting the Formation of the Climate Signal Stored in Ice Core Water Isotope Records
(Doctoral thesis, 2022-02-24)Accurate projections of future climate rely on knowledge of natural climate variability on different time scales. Climate proxies, such as stable water isotope records recovered from ice cores, provide insights into the ...