Geophysical Institute: Nye registreringer
Viser treff 21-40 av 1023
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On the utility of individual tendency output: Revealing interactions between parameterized processes during a marine cold air outbreak
(Journal article; Peer reviewed, 2021)Forecasts of marine cold air outbreaks critically rely on the interplay of multiple parameterization schemes to represent subgrid-scale processes, including shallow convection, turbulence, and microphysics. Even though ... -
Analysis of offshore wind spectra and coherence under neutral stability condition using the two LES models PALM and SOWFA
(Journal article; Peer reviewed, 2021)The Parallelized Large-Eddy Model (PALM) and the Simulator for Wind Farm Applications (SOWFA) have been used to simulate the marine boundary layer flows under neutral stability condition. The present work aims to investigate ... -
Quasi-static response of a bottom-fixed wind turbine subject to various incident wind fields
(Journal article; Peer reviewed, 2021)In the design of offshore wind farms the simulated dynamic response of the wind turbine structure includes loading from turbulent wind. The International Electrotechnical Commission (IEC) standard for wind turbine design ... -
Local-scale deposition of surface snow on the Greenland ice sheet
(Journal article; Peer reviewed, 2021)Ice cores from polar ice sheets and glaciers are an important climate archive. Snow layers, consecutively deposited and buried, contain climatic information from the time of their formation. However, particularly ... -
Mechanisms of regional winter sea-ice variability in a warming arctic
(Journal article; Peer reviewed, 2021)The Arctic winter sea ice cover is in retreat overlaid by large internal variability. Changes to sea ice are driven by exchange of heat, momentum, and freshwater within and between the ocean and the atmosphere. Using a ... -
Characteristics of Cold-Air Outbreak Events and Associated Polar Mesoscale Cyclogenesis over the North Atlantic Region
(Journal article; Peer reviewed, 2021)Equatorward excursions of cold polar air masses into ice-free regions, so-called Cold Air Outbreaks (CAO), are frequently accompanied by the development of severe mesoscale weather features. Focusing on two key regions, ... -
Fate of Warm Pacific Water in the Arctic Basin
(Journal article; Peer reviewed, 2021)Pacific Summer Water (PSW) plays a critical role in the ecosystem of the western Arctic Ocean, impacting sea-ice melt and providing freshwater to the basin. Most of the water exits the Chukchi Sea shelf through Barrow ... -
Modelling a tropical-like cyclone in the Mediterranean Sea under present and warmer climate
(Journal article; Peer reviewed, 2021)This study focuses on a single Mediterranean hurricane (hereafter medicane), to investigate its response to global warming during the middle of the 21st century and assesses the effects of a warmer ocean and a warmer ... -
Relative importance of tropopause structure and diabatic heating for baroclinic instability
(Journal article; Peer reviewed, 2021)Misrepresentations of wind shear and stratification around the tropopause in numerical weather prediction models can lead to errors in potential vorticity gradients with repercussions for Rossby wave propagation and ... -
Evaluation of three numerical weather prediction models for the Weddell Sea region for the Austral winter 2013
(Journal article; Peer reviewed, 2021)It is widely recognized that numerical weather prediction (NWP) results for the Antarctic are relatively poor compared to the mid-latitudes. In this study, we evaluate output from three operational NWP systems: the ECMWF, ... -
Nonlinear response of atmospheric blocking to early Winter Barents-Kara seas warming: An idealized model study
(Journal article; Peer reviewed, 2021)Wintertime Ural blocking (UB) has been shown to play an important role in cold extremes over Eurasia, and thus it is useful to investigate the impact of warming over the Barents–Kara Seas (BKS) on the behavior of Ural ... -
The Seasonal and Regional Transition to an Ice-Free Arctic
(Journal article; Peer reviewed, 2021)The Arctic sea ice cover is currently retreating and will continue its retreat in a warming world. However, the loss of sea ice is neither regionally nor seasonally uniform. Here, we present the first regional and seasonal ... -
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 ... -
Groundwater fluctuations during a debris flow event in western Norway - Triggered by rain and snowmelt
(Journal article; Peer reviewed, 2021)Pore pressure is crucial in triggering debris slides and flows. Here we present measurements of groundwater pore pressure and temperature recorded by a piezometer 1.6 m below the surface on a slope susceptible to debris ... -
Quantifying the Stable Water Isotopologue Exchange Between the Snow Surface and Lower Atmosphere by Direct Flux Measurements
(Journal article; Peer reviewed, 2021)Surface processes in high latitudes play an important role in global climate and thus understanding the physics of these systems is critical for improving climate projections. The characterization of the stable water ... -
Preformed Properties for Marine Organic Matter and Carbonate Mineral Cycling Quantification
(Journal article; Peer reviewed, 2021)We estimate preformed ocean phosphate, nitrate, oxygen, silicate, and alkalinity by combining a reconstruction of ventilation pathways in the ocean interior with estimates of submixed layer properties. These new preformed ... -
The role of sublimation as a driver of climate signals in the water isotope content of surface snow: Laboratory and field experimental results
(Journal article; Peer reviewed, 2021)Ice core water isotope records from Greenland and Antarctica are a valuable proxy for paleoclimate reconstruction, yet the processes influencing the climate signal stored in the isotopic composition of the snow are being ... -
An evaluation of the performance of sea ice thickness forecasts to support arctic marine transport
(Journal article; Peer reviewed, 2022)In response to declining sea ice cover, human activity in the Arctic is increasing, with access to the Arctic Ocean becoming more important for socio-economic reasons. Accurate knowledge of sea ice conditions is therefore ... -
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 ... -
Nonstationarity of the link between the Tropics and the summer East Atlantic pattern
(Journal article; Peer reviewed, 2021)A 700-year pre-industrial control run with the MPI-ESM-LR model is used to investigate the link between the summer East Atlantic (SEA) pattern and the Pacific-Caribbean rainfall dipole (PCD), a link that has previously ...