Browsing Geophysical Institute by Document Types "Doctoral thesis"
Now showing items 1-20 of 81
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Air-Sea Interaction in Biophysical Modeling: With focus on Northeast Arctic Cod
(Doctoral thesis, 2019-02-15)The focus of this thesis is on upper ocean dynamics and the interactions between the atmosphere and the oceans in relation to early life stages of Northeast Arctic cod. The main spawning sites of Northeast Arctic cod are ... -
Arctic Ocean carbon biogeochemistry under climate change and ocean acidification
(Doctoral thesis; Peer reviewed, 2013-05-10)Human-induced CO2 emissions to the atmosphere cause climate change and ocean acidification. The strongest indicators of climate change and ocean acidification are expected to be found in the Arctic Ocean (AO). The AO area ... -
The Arctic Ocean in a Fresh and Warm Future
(Doctoral thesis, 2016-10-28)The Arctic Ocean remains one of the least known ocean regions due to its remote location, year-round sea ice cover, and harsh weather conditions. Today, knowledge of the Arctic atmosphere-sea ice-ocean system increases in ... -
Arctic sea ice altimetry - advances and current uncertainties
(Doctoral thesis, 2014-06-11)One of the most prominent features of global climate change is the reduction in Arctic sea ice thickness. The main tool to derive sea ice thickness on an Arctic wide scale is altimetry from satellites, yet current estimates ... -
Aspects on interactions between mid- to high latitude atmospheric circulation and some surface processes
(Doctoral thesis, 2006-06-08)The Arctic is a hot topic in Climate Research. A large number of signs of a warming Arctic Climate have been identified the latest years. This is of major concern in light of the increasing atmospheric content of greenhouse ... -
Atlantic thermohaline changes and its implications on the carbon cycle during the Last Interglacial
(Doctoral thesis, 2020-06-16)Large and abrupt changes in the Earth’s climate have been recorded in marine records and Greenland ice cores and mostly characterize the last glacial period. These sudden transitions of climate, occurring within a few ... -
Atmospheric icing and meteorological variables: Full scale experiment and testing of models
(Doctoral thesis, 2005-04-15) -
Carbon and oxygen fluxes in the Barents and Norwegian Seas : production, air-sea exchange and budget calculations
(Doctoral thesis, 2007-08-17)This thesis focus on the carbon and oxygen fluxes in the Barents and Norwegian Seas and presents four studies where the main topics are variability of biological production, air-sea exchange and budget calculations. The ... -
Carbon to nutrient ratios in marine systems: understanding natural variability Studies of seasonal, inter-annual and regional variability
(Doctoral thesis, 2012-06-29)Ecological stoichiometry deals with the coupling of the carbon (C), nitrogen (N) and phosphorus (P) cycles at the base of the aquatic food webs. Variation in C:N:P stoichiometry is driven by a multitude of factors, and the ... -
Certain aspects of high latitude climate variability
(Doctoral thesis, 2014-06-13) -
Challenges in seismic hazard assessment: Analyses of ground motion modelling and seismotectonic sources
(Doctoral thesis, 2006-06-21)Seismic hazard assessment has an important societal impact in describing levels of ground motions to be expected in a given region in the future. Challenges in seismic hazard assessment are closely associated with the fact ... -
Circulation along the northern slope of the Greenland-Scotland Ridge
(Doctoral thesis, 2020-12-11)The Greenland-Scotland Ridge separates the subpolar North Atlantic from the Nordic Seas and constrains the flow of the upper and lower branches of the northern extremity of the Atlantic Meridional Overturning Circulation ... -
Circulation and exchange of water masses on the Faroe Shelf and the impact on the Shelf ecosystem
(Doctoral thesis, 2009-02-11)The findings in this work can be listed as follows: FSW: Based on CTD data, the FSW is found to be relatively vertically homogeneous through-out the year inside the 100 m depth contour. Temperature measurements at coastal ... -
Circulation and transformation of Atlantic and Arctic water masses in climate models
(Doctoral thesis, 2011-12-09)Ocean heat transport and associated heat loss to the atmosphere contributes significantly to the anomalously mild climate of northwestern Europe and its variability. In this thesis, the circulation and transformation of ... -
Circulation features in the northern North Atlantic Ocean inferred from simulated radioactive tracers
(Doctoral thesis, 2008-03-12) -
The circulation of the Norwegian Sea- An investigation from space and ocean
(Doctoral thesis, 2014-01-10)The Norwegian Sea circulation plays a key role in maintaining the mild climate of the northwestern Europe via the transport of warm Atlantic Water pole-ward. The first paper addresses the advective currents connecting the ... -
Climate controlled mechanisms of subpolar North Atlantic carbon uptake
(Doctoral thesis, 2017-06-27)The North Atlantic is a key region for global climate variability. Earlier studies have shown changes in the large-scale circulation, air-sea heat and freshwater fluxes and the carbon cycle in the North Atlantic in relation ... -
Connectivity among subpopulations of Norwegian Coastal cod. Impacts of physical-biological factors during egg stages.
(Doctoral thesis, 2012-04-19)Norwegian Coastal cod form a stationary population of Atlantic cod ( Gadus morhua L.) consisting of several genetically separated subpopulations. A small-scale differen- tiation in marine populations with pelagic eggs and ... -
Decadal solar irradiance variability in northern Europe
(Doctoral thesis, 2014-11-28)Shortwave (SW) radiation from the Sun is the external energy source on Earth and the fundamental input of energy into the climate system. Variations of the SW radiation and its transfer through the atmosphere can have ... -
Drivers of the marine CO2 system in the High Arctic - from the deep basins to the shallow fjords
(Doctoral thesis, 2019-02-20)The High Arctic is largely undersampled in terms of marine CO2 system data due to the cold dark season and often an extensive sea ice cover. The current understanding of the Arctic carbon cycle is thus vulnerable to both ...