Blar i Geophysical Institute på tittel
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Training of supermodels - in the context of weather and climate forecasting
(Doctoral thesis, 2021-02-08)Given a set of imperfect weather or climate models, predictions can be improved by combining the models dynamically into a so called `supermodel'. The models are optimally combined to compensate their individual errors. ... -
Transient response of the Atlantic Meridional Overturning Circulation to enhanced freshwater input to the Nordic Seas–Arctic Ocean in the Bergen Climate Model
(Tellus A;56(4), Journal article, 2004-07-09)The transient response of the climate system to anomalously large freshwater input to the high latitude seas is examined using the newly developed Bergen Climate Model. A 150-yr twin-experiment has been carried out, ... -
Transientstabilitet-implementering ved BESS for offshore mikronett i øymodus
(Master thesis, 2022-06-01)Konvensjonelle mikronett har tradisjonelt sikret spenning- og frekvensstabilitet med spinning-reserve fra roterende maskiner ved forstyrrelser i nettet. En økende andel av ikke-roterende energiproduksjon påvirker kraftsystemers ... -
Transitioning remote Arctic settlements to renewable energy systems – A modelling study of Longyearbyen, Svalbard
(Journal article; Peer reviewed, 2020)As transitioning away from fossil fuels to renewable energy sources comes on the agenda for a range of energy systems, energy modelling tools can provide useful insights. If large parts of the energy system turns out to ... -
Transport of inorganic carbon through, within, and below the ocean surface
(Doctoral thesis, 2011-03-11)Human emissions of CO2 through the burning of fossil fuel, cement production, and land use change have increased the atmospheric CO2 concentration by 39 % since 1750. Without the large uptake of anthropogenic CO2 by the ... -
Transport Upscaling in Porous Media
(Master thesis, 2014-06-02)Numerical models are important for modeling what happens in porous media. In this thesis we will simulate the heat transport in geothermal reservoirs. Because these reservoirs are usually quite large, we will make a model ... -
Trends and drivers in global surface ocean pH over the past 3 decades
(Peer reviewed; Journal article, 2015-03-02)We report global long-term trends in surface ocean pH using a new pH data set computed by combining fCO2 observations from the Surface Ocean CO2 Atlas (SOCAT) version 2 with surface alkalinity estimates based on temperature ... -
Trends in extreme precipitation and the influence by meteorological parameters following the RCP8.5 scenario over 2 catchments in India
(Master thesis, 2015-06-02)The Historical1 simulation (1960-2000) and the RCP8.5 scenario (2060-2100) from the NorESM are used to investigate trends in extreme precipitation, as well as the impact from vertical velocity, specific humidity, divergence ... -
Trends of Ocean Acidification and pCO2 in the Northern North Sea, 2003-2015
(Peer reviewed; Journal article, 2019-10-29)For continental shelf regions, the long‐term trend in sea surface carbon dioxide (CO2) partial pressure (pCO2) and rates of ocean acidification are not accurately known. Here, we investigate the decadal trend of observed ... -
The tropical Atlantic observing system
(Peer reviewed; Journal article, 2019-05-10)The tropical Atlantic is home to multiple coupled climate variations covering a wide range of timescales and impacting societally relevant phenomena such as continental rainfall, Atlantic hurricane activity, oceanic ... -
Tropical Atlantic variability: Observations and modeling
(Peer reviewed; Journal article, 2019-08-27)We review the state-of-the-art knowledge of Tropical Atlantic Variability (TAV). A well-developed observing system and sustained effort of the climate modeling community have improved our understanding of TAV. It is dominated ... -
Tuning the Diet of North-East Arctic Cod in the Barents Sea - An Exploration with the end-to-end Model ATLANTIS
(Master thesis, 2013-06-03)This thesis explores the feeding relationships of Atlantic cod (Gadus morhua) on its major prey species within the Barents Sea using the newly developed Atlantis model for the region. Atlantis is an end-to-end model designed ... -
Turbulence and heat exchange under ice
(Master thesis, 2003)Turbulent fluxes of heat and salt were measured under sea ice at four different locations around Spitsbergen. In Kongsfjorden on West Spitsbergen additional measurements of heat fluxes in the ice and in the atmosphere were ... -
Turbulence Measurements in Shallow Water from a Subsurface Moored Moving Platform
(Peer reviewed; Journal article, 2013)Preliminary results are presented from a moored, autonomous instrument measuring the upper ocean turbulent dissipation rate together with the surface gravity wave field. Observations are made in the area approximately 30 ... -
Turbulence structure in the upper ocean: a comparative study of observations and modeling
(Peer reviewed; Journal article, 2014-04)Observations of turbulent dissipation rates measured by two independent instruments are compared with numerical model runs to investigate the injection of turbulence generated by sea surface gravity waves. The nearsurface ... -
Turbulence-particle interactions under surface gravity waves
(Peer reviewed; Journal article, 2016)The dispersion and transport of single inertial particles through an oscillatory turbulent aquatic environment are examined numerically by a Lagrangian particle tracking model using a series of idealised test cases. The ... -
Turbulent diffusion and transport from a CO2 lake in the deep ocean
(Journal article, 2005-09-21)If liquid CO2 is stored as a dense ‘‘lake’’ on the deep ocean floor, it is expected to dissolve in seawater. Ocean currents and turbulence can increase the net rate of CO2 release by several orders of magnitude compared ... -
Turbulent heat and momentum fluxes in the upper ocean under Arctic sea ice
(Peer reviewed; Journal article, 2017-02)We report observations of heat and momentum fluxes measured in the ice-ocean boundary layer from four drift stations between January and June 2015, covering from the typical Arctic basin conditions in the Nansen Basin to ... -
Turbulent kinetic energy estimates from profiling wind LiDAR measurements and their potential for wind energy applications
(Peer reviewed; Journal article, 2016-07-10)This study shows that turbulent kinetic energy (TKE) estimates, derived from static LiDARs in Doppler Beam Swing (DBS) mode, permit a qualitative and quantitative characterization and analysis of turbulent structures as ... -
Turbulent upper-ocean mixing affected by meltwater layers during Arctic summer
(Peer reviewed; Journal article, 2017-04)Every summer, intense sea ice melt around the margins of the Arctic pack ice leads to a stratified surface layer, potentially without a traditional surface mixed layer. The associated strengthening of near-surface ...