Browsing Geophysical Institute by Title
Now showing items 318-337 of 1228
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Estimating fin whale distribution from ambient noise spectra using Bayesian inversion
(Master thesis, 2015-06-01)Passive acoustic monitoring is increasingly used to study the distribution and migration of marine mammals. Marine mammal vocalizations are transient sounds, but the combined sound energy of a population continuously ... -
Estimating global radiation at ground level from satellite images
(Doctoral thesis, 2005-06-15) -
Estimation of groundwater storage loss for the Indian Ganga Basin using multiple lines of evidence
(Journal article; Peer reviewed, 2023)We used remote sensing data, field observations and numerical groundwater modelling to investigate long-term groundwater storage losses in the regional aquifer of the Ganga Basin in India. This comprised trend analysis for ... -
Estimation of Ocean Biogeochemical Parameters in an Earth System Model Using the Dual One Step Ahead Smoother: A Twin Experiment
(Journal article; Peer reviewed, 2022)Ocean biogeochemical (BGC) models utilise a large number of poorly-constrained global parameters to mimic unresolved processes and reproduce the observed complex spatio-temporal patterns. Large model errors stem primarily ... -
Et dynamisk studium av stormen Narve - et kaldluftsutbrudd i Finnmark - ved hjelp av observasjoner og numeriske simuleringer
(Master thesis, 2007)Title: "A dynamical study of the storm Narve - a cold air outbreak in Finnmark - with the use of observations and numerical simulations."During the storm Narve in January 2006 strong winds from land were blowing during six ... -
Eurasian Cooling Linked to the Vertical Distribution of Arctic Warming
(Journal article; Peer reviewed, 2020)Observations show that deep Arctic winter warming, extending from surface to mid‐troposphere, has concurred with below‐average temperature over central Eurasia. Modeling studies focusing on the response to Arctic sea ice ... -
The European Climate Research Alliance (ECRA): Collaboration from bottom-up
(Peer reviewed; Journal article, 2019-01-17)The European Climate Research Alliance (ECRA) is an association of leading European research institutions in the field of climate research (http://www.ecra-climate.eu/, last access: 6 December 2018). ECRA is a bottom-up ... -
The European gravity field and steady-state ocean circulation explorer satellite mission: its impact on geophysics
(Journal article, 2003-07)Current knowledge of the Earth’s gravity field and its geoid, as derived from various observing techniques and sources, is incomplete. Within a reasonable time, substantial improvement will come by exploiting new approaches ... -
Evaluating Impacts of Recent Arctic Sea Ice Loss on the Northern Hemisphere Winter Climate Change
(Journal article; Peer reviewed, 2018)Wide disagreement among individual modeling studies has contributed to a debate on the role of recent sea ice loss in the Arctic amplification of global warming and the Siberian wintertime cooling trend. We perform coordinated ... -
Evaluating the biological pump efficiency of the Last Glacial Maximum ocean using δ13C
(Journal article; Peer reviewed, 2021)Although both physical and biological marine changes are required to explain the 100 ppm lower atmospheric pCO2 of the Last Glacial Maximum (LGM, ∼21 ka) as compared to preindustrial (PI) times, their exact contributions ... -
Evaluating the leeway coefficient of ocean drifters using operational marine environmental prediction systems
(Journal article; Peer reviewed, 2020)The water following characteristics of six different drifter types are investigated using two different operational marine environmental prediction systems: one produced by Environment and Climate Change Canada (ECCC) and ... -
Evaluating two numerical advection schemes in HYCOM for eddy-resolving modelling of the Agulhas Current
(Ocean Science, Journal article, 2009-06-02)A 4th order advection scheme is applied in a nested eddy-resolving Hybrid Coordinate Ocean Model (HYCOM) of the greater Agulhas Current system for the purpose of testing advanced numerics as a means for improving the model ... -
Evaluation of a sub-kilometre NWP system in an Arctic fjord-valley system in winter
(Journal article; Peer reviewed, 2020)Terrain challenges the prediction of near-surface atmospheric conditions, even in kilometre-scale numerical weather prediction (NWP) models. In this study, the ALADIN-HIRLAM NWP system with 0.5 km horizontal grid spacing ... -
Evaluation of different wind fields for the investigation of the dynamic response of offshore wind turbines
(Journal article; Peer reviewed, 2020)As the size of offshore wind turbines increases, a realistic representation of the spatiotemporal distribution of the incident wind field becomes crucial for modeling the dynamic response of the turbine. The International ... -
Evaluation of Gaussian wake models under different atmospheric stability conditions: Comparison with large eddy simulation results
(Journal article; Peer reviewed, 2020)The calculation of the velocity deficit in the wake of individual wind turbines is a fundamental part of the wind farm analysis. A good approximation of the wake deficit behind a single wind turbine will improve the power ... -
Evaluation of ocean dimethylsulfide concentration and emission in CMIP6 models
(Journal article; Peer reviewed, 2021)Characteristics and trends of surface ocean dimethylsulfide (DMS) concentrations and fluxes into the atmosphere of four Earth system models (ESMs: CNRM-ESM2-1, MIROC-ES2L, NorESM2-LM, and UKESM1-0-LL) are analysed over the ... -
Evaluation of sea surface roughness parameterization in meso-to-micro scale simulation of the offshore wind field
(Journal article; Peer reviewed, 2023)Accurate parameterization of the wind-induced effects on the Marine Atmospheric Boundary Layer (MABL) is of fundamental importance for many applications including weather forecasting and offshore wind energy. Roughness ... -
Evaluation of structural dynamic response of piping subjected to multiphase flow-induced vibration
(Master thesis, 2024-06-03)Flow-induced Vibration (FIV) in piping systems pose a problem for the energy infrastructure, where maintaining the integrity of pipelines is essential to ensure stable provision of power supply. In the petrochemical industry, ... -
An evaluation of surface meteorology and fluxes over the Iceland and Greenland Seas in ERA5 reanalysis: The impact of sea ice distribution
(Journal article; Peer reviewed, 2021)The Iceland and Greenland Seas are a crucial region for the climate system, being the headwaters of the lower limb of the Atlantic Meridional Overturning Circulation. Investigating the atmosphere–ocean–ice processes in ... -
Evaluation of Temperature-Dependent Complex Refractive Indices of Supercooled Liquid Water Using Downwelling Radiance and In-Situ Cloud Measurements at South Pole
(Journal article; Peer reviewed, 2022)Clouds have a large effect on the radiation budget and represent a major source of uncertainty in climate models. Supercooled liquid clouds can exist at temperatures as low as 235 K, and the radiative effect of these clouds ...