Blar i Geophysical Institute på tittel
Viser treff 1010-1029 av 1228
-
Solstrøm, kraftnett, energimodeller og World Energy Model - Hvorfor undervurderes utbygging av solstrøm av IEAs WEM-modell?
(Master thesis, 2016-06-01)I denne oppgaven har jeg forsøkt å svare på spørsmålet «Hvorfor undervurderes utbygging av solstrøm i IEAs WEM-modell?». Dette har jeg gjort ved å se på hvilken teori og ny forskning som finnes for solkraft, kraftsystem, ... -
Some aspects of the work of V.W. Ekman
(Journal article, 2006-01)The climatic conditions in theArctic, and observations of the wind-induced drift of ice made in connexion with Fridtjof Nansen’s Fram expedition, led to the discovery 100 years ago by Vilhelm Bjerknes’ pupil, V.W. Ekman, ... -
Sources and upstream pathways of the densest overflow water in the Nordic Seas
(Journal article; Peer reviewed, 2020)Overflow water from the Nordic Seas comprises the deepest limb of the Atlantic Meridional Overturning Circulation, yet questions remain as to where it is ventilated and how it reaches the Greenland-Scotland Ridge. Here we ... -
Southern Ocean Control of 2°C Global Warming in Climate Models
(Journal article; Peer reviewed, 2023)Global warming will soon reach the Paris Agreement targets of 1.5°C/2°C temperature increase above pre-industrial levels. Under a business-as-usual scenario, the time to reach these targets varies widely among climate ... -
Southern Ocean controls of the vertical marine δ13C gradient – a modelling study
(Peer reviewed; Journal article, 2018-12-04)δ 13 C, the standardised 13C/12C ratio expressed in per mille, is a widely used ocean tracer to study changes in ocean circulation, water mass ventilation, atmospheric pCO2, and the biological carbon pump on timescales ... -
Sparse observations induce large biases in estimates of the global ocean CO2 sink: An ocean model subsampling experiment
(Journal article; Peer reviewed, 2023)Estimates of ocean CO2 uptake from global ocean biogeochemistry models and pCO2-based data products differ substantially, especially in high latitudes and in the trend of the CO2 uptake since 2000. Here, we assess the ... -
Spatial Patterns, Mechanisms, and Predictability of Barents Sea Ice Change
(Journal article; Peer reviewed, 2022)Recent Arctic winter sea ice loss has been most pronounced in the Barents Sea. Here we explore the spatial structure of Barents Sea ice change as observed over the last 40 years. The dominant mode of winter sea ice ... -
Spatial variability of nocturnal stability regimes in an operational weather prediction model
(Journal article; Peer reviewed, 2022)Forecast errors in near-surface temperatures are a persistent issue for numerical weather prediction models. A prominent example is warm biases during cloud-free, snow-covered nights. Many studies attribute these biases ... -
Springtime nitrogen oxides and tropospheric ozone in Svalbard: results from the measurement station network
(Journal article; Peer reviewed, 2022)Svalbard is a remote and scarcely populated Arctic archipelago and is considered to be mostly influenced by long-range-transported air pollution. However, there are also local emission sources such as coal and diesel power ... -
The stable atmospheric boundary layer over snow-covered sea ice: Model evaluation with fine-scale ISOBAR18 observations
(Journal article; Peer reviewed, 2022)A realistic representation of the stable atmospheric boundary layer in numerical weather prediction (NWP) and climate models is still a challenge. We study the evolution of a stable boundary layer over snow-covered sea ice ... -
Stable Isotope Composition of Surface Vapour and Precipitation at the Southwest Coast of Norway
(Doctoral thesis, 2021-04-16)A better understanding of the water cycle has become even more crucial under the present condition of climate change. The stable isotopes of hydrogen and oxygen have been used for decades as powerful tracers to provide ... -
A standard protocol for describing the evaluation of ecological models
(Journal article; Peer reviewed, 2022)Numerical models of ecological systems are increasingly used to address complex environmental and resource management questions. One challenge for scientists, managers, and stakeholders is to appraise how well suited these ... -
Statistic and coherence response of ship-based lidar observations to motion compensation
(Journal article; Peer reviewed, 2020)Ship-based profiling Lidar systems experience a strong influence of rotational and translational motion on beam direction and hence the line-of-sight velocity. This motion error is inherited by the retrieved 3-dimensional ... -
Statistical and Dynamical Characteristics of Extreme Wave Crests Assessed with Field Measurements from the North Sea
(Journal article; Peer reviewed, 2023)Wave crests of unexpected height and steepness pose a danger to activities at sea, and long-term field measurements provide important clues for understanding the environmental conditions that are conducive to their generation ... -
A statistical gap-filling method to interpolate global monthly surface ocean carbon dioxide data
(Peer reviewed; Journal article, 2015-10-24)We have developed a statistical gap-filling method adapted to the specific coverage and properties of observed fugacity of surface ocean CO2 (fCO2). We have used this method to interpolate the Surface Ocean CO2 Atlas (SOCAT) ... -
A status assessment of selected data synthesis products for ocean biogeochemistry
(Journal article; Peer reviewed, 2023-04-26)Ocean data synthesis products for specific biogeochemical essential ocean variables have the potential to facilitate today’s biogeochemical ocean data usage and comply with the Findable Accessible Interoperable and Reusable ... -
A Steady Regime of Volume and Heat Transports in the Eastern Arctic Ocean in the Early 21st Century
(Journal article; Peer reviewed, 2021)Mooring observations in the eastern Eurasian Basin of the Arctic Ocean showed that mean 2013–2018 along-slope volume and heat (calculated relative to the freezing temperature) transports in the upper 800 m were 4.8 ± 0.1 ... -
Still Arctic? — The changing Barents Sea
(Journal article; Peer reviewed, 2023)The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. ... -
Stirring across the Antarctic Circumpolar Current's southern boundary at the prime meridian, Weddell Sea
(Journal article; Peer reviewed, 2023)At the southern boundary of the Antarctic Circumpolar Current (ACC), relatively warm ACC waters encounter the colder waters surrounding Antarctica. Strong density gradients across the southern boundary indicate the presence ...