A5043097340- Oceanographic and Atmospheric Processes
- Arctic and Antarctic ice dynamics
- Climate variability and models
- Geophysics and Gravity Measurements
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Cryospheric studies and observations
- Ocean Waves and Remote Sensing
- Marine and coastal ecosystems
- Geological Studies and Exploration
- Marine and fisheries research
- Geology and Paleoclimatology Research
- Geological formations and processes
- Atmospheric and Environmental Gas Dynamics
- Geological and Geophysical Studies
- Tropical and Extratropical Cyclones Research
- Scientific Research and Discoveries
- Food Industry and Aquatic Biology
- Geomagnetism and Paleomagnetism Studies
- Reservoir Engineering and Simulation Methods
- Meteorological Phenomena and Simulations
- Coastal and Marine Management
- GNSS positioning and interference
- Marine and environmental studies
- Spacecraft Design and Technology
Bjerknes Centre for Climate Research
2014-2025
Nansen Environmental and Remote Sensing Center
2014-2025
Nansen International Environmental and Remote Sensing Center
2014-2024
National Energy Research Scientific Computing Center
2024
Desmond Tutu HIV Foundation
2024
University of Bergen
2010-2023
Uni Research (Norway)
2021
National Institute of Oceanography
2009-2010
This study introduces a combined Marine Heatwaves-Degree Heating Weeks (MHW-DHW) analysis to evaluate climate change impacts on three coral refugia: Green Island, Nanwan Bay, and Dongsha Atoll. MHWs reflect rapid rises in Sea Surface Temperature (SST) their timing, while DHW captures sustained high SSTs, indicating thermal stress, potential bleaching risks, vulnerability of habitats. Since 2016, MHW development has significantly increased annual stress. Between 2020 2022, nearly half each...
Introduction — s1 Chapter 1: Essential Variables s4 1.1 Ocean temperature and salinity Sandrine Mulet, Bruno Buongiorno Nardelli, Simon Good, Andrea Pisano, Eric Greiner, Maeva Monier, Emmanuel...
The Copernicus Marine Environment Monitoring Service (CMEMS) Ocean State Report (OSR) provides an annual report of the state global ocean and European regional seas for policy decision-makers with additional aim increasing general public awareness about status of, changes in, marine environment. CMEMS OSR draws on expert analysis a 3-D view (through reanalysis systems), from above remote-sensing data) direct interior in situ measurements) seas. is based unique monitoring capabilities blue...
The Copernicus Marine Services State of Pacific Ocean analysis available data demonstrates that the ocean surrounding Islands is warmer, has higher heat content, with sea level rising at rates
Chapter 1: CMEMS OSR5 1 1.1 IntroductionKarina von Schuckmann and Pierre-Yves Le Traon 1 1.2 Knowledge data for international Ocean governancePaula Kellett, Brittany E. Alexander Jo...
Abstract. Studies of the global sea-level budget (SLB) and ocean-mass (OMB) are essential to assess reliability our knowledge change its contributors. Here we present datasets for times series SLB OMB elements developed in framework ESA's Climate Change Initiative. We use these simultaneously, utilising a consistent uncertainty characterisation. The time series, given at monthly sampling available https://doi.org/10.5285/17c2ce31784048de93996275ee976fff (Horwath et al., 2021), include mean...
Abstract. The Arctic climate system is rapidly transitioning into a new regime with reduction in the extent of sea ice, enhanced mixing ocean and atmosphere, thus coupling within ocean–ice–atmosphere system; these physical changes are leading to ecosystem Ocean. In this review paper, we assess one critically important aspects regime, variability freshwater, which plays fundamental role by impacting stratification ice formation or melt. Liquid solid freshwater exports also affect global...
Abstract The Lofoten Basin is the most eddy rich region in Norwegian Sea. In this paper, characteristics of these eddies are investigated from a comprehensive database nearly two decades satellite altimeter data (1995–2013) together with Argo profiling floats and surface drifter data. An automated method identified 1695/1666 individual anticyclonic/cyclonic more than 10,000 altimeter‐based observations. found to be predominantly generated residing locally. spatial distributions lifetime,...
Abstract The out-of-phase inter-decadal co-variability between summer (JJA) sea ice extent (SIE) in the Kara Sea (KS) sector of Arctic Ocean and Indian Summer Monsoon Rainfall (ISMR) is found to be weakened during recent decades with rapidly declining SIE KS (since 1980s). However, frequency ISMR extremes are have a consistent relation periods. A possible physical mechanism for late-season suggested, focusing on years since 1980s.
Abstract. Measuring salinity from space is challenging since the sensitivity of brightness temperature (TB) to sea surface (SSS) low (about 0.5 K psu−1), while SSS range in open ocean narrow 5 psu, if river discharge areas are not considered). This translates into a high accuracy requirement radiometer 2–3 K). Moreover, TB at cold waters even lower (0.3 making retrieval more challenging. Due this limitation, ESA launched specific initiative 2019, Arctic+Salinity project (AO/1-9158/18/I-BG),...
Abstract Coastal zones with dense populations, low elevations and/or inadequate adaptive capacity are on the frontline of unprecedented impacts from climate change. The Gulf Guinea (GoG), stretching Liberia to Gabon, is in particular vulnerable coastal flooding caused by local climate-induced sea level rise. In this region, interannual decadal changes remain poorly understood, mainly due a lack tide gauge stations. Here we use nearly three decades (1993–2021) satellite altimetry data study...
This study presents a comprehensive investigation of the complex dynamics sea-level rise (SLR) and its multiple impacts on coastal regions in southern Africa. We meticulously analyse trends patterns SLR subsidence rates using wealth data from 1993 to 2022, including observations network 10 reliable tide gauges XTRACK processed Coastal Altimetry Approach minimise shortcomings conventional altimetry data. Our results show that sea level areas South Africa, such as Cape Town (6.3 mm/yr), is...
A regional ocean model was used to study the influence of Madagascar Ridge on &#160;circulation and eddy variability in Agulhas Current system. In control experiment, run with a realistic bathymetry, whereas idealized bathymetry modified by flattening Ridge. When suppressed, no obvious changes were observed large-scale circulation. However, integrated transports revealed an excess about 10 Sv (1 = 106m3 s&#8722;1) recirculation greater Dynamic statistically (p < 0.05) significant...
Abstract Atlantic Water (AW) transported from the Nordic Seas is major source of oceanic heat to Arctic Ocean. Based on results TOPAZ reanalysis, a regional coupled ice‐ocean data assimilation system, we show that interannual variability AW temperature in Fram Strait (FS) associated with strength Greenland Sea gyre (GSG) circulation. The response GSG anomalous wind stress curl over modifies inflow and thus influences FS. A stronger (weaker) circulation increases (decreases) flow speed toward...
Sea level change is an important indicator of climate change. Our study focuses on the sea budget assessment Arctic Ocean using: (1) newly reprocessed satellite altimeter data with major changes in processing techniques; (2) ocean mass derived from GRACE gravimetry; (3) and steric height estimated gridded hydrographic for GRACE/Argo time period (2003–2016). The Beaufort Gyre (BG) Nordic Seas (NS) regions exhibit largest positive trend during period. Halosteric found to dominate area averaged...
Abstract Ocean vortices are an important regional agent of water transport and cross‐frontal exchange. This study is a first attempt to compare statistics 3D properties mesoscale eddies over the Norwegian Greenland Seas. Results suggest that in central Sea less intense, have smaller vertical extent much heat anomalies their cores compared Lofoten Basin Sea. In addition, these results relatively small inter‐basin eddy The large‐scale pattern translations shows cyclonically skirt...
The effect of wave-induced processing on steric sea-level is investigated through ocean-wave coupled simulations. experiments are performed with a high-resolution configuration the Geestacht COAstal model SysTem (GCOAST), implemented in Northeast Atlantic, North Sea and Baltic which considered as connected basins. GCOAST system accounts for wave-ocean interactions ocean circulation relies NEMO (Nucleus European Modelling Ocean) model, while simulations using spectral wind wave WAM. objective...
Abstract. The hydrography of the Arctic Ocean has experienced profound changes over last 2 decades. sea ice extent declined by more than 10 % per decade, and its liquid freshwater content increased mainly due to glaciers melting. Further, new satellite retrievals surface salinity (SSS) in might contribute better characterizing cold regions. are intimately related such that an increase (decrease) one entails a decrease (increase) other. In this work, we evaluate Beaufort Gyre using...
Five different parameterizations of Langmuir turbulence (LT) effect are investigated in a realistic model the North Atlantic and Arctic using wave forcing from global hindcast. The mainly apply an enhancement to velocity scale, and/or entrainment buoyancy flux surface boundary layer. An additional run is also performed with other effects assess relative importance turbulence, namely Coriolis-Stokes forcing, Stokes tracer advection wave-modified momentum fluxes. default (without effects)...