A5082756717- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Climate variability and models
- Climate change and permafrost
- Meteorological Phenomena and Simulations
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Distributed and Parallel Computing Systems
- Oceanographic and Atmospheric Processes
- Stellar, planetary, and galactic studies
- Atmospheric chemistry and aerosols
- Geophysics and Gravity Measurements
- Climate Change and Health Impacts
- Hydrology and Watershed Management Studies
- Gamma-ray bursts and supernovae
- Scientific Computing and Data Management
- Environmental Policies and Emissions
- Solar Radiation and Photovoltaics
- Winter Sports Injuries and Performance
- Neural Networks and Applications
- Astrophysical Phenomena and Observations
- Atmospheric Ozone and Climate
- Pulsars and Gravitational Waves Research
Royal Netherlands Meteorological Institute
2019-2025
Universitat Politècnica de Catalunya
2020
Barcelona Supercomputing Center
2020
Institució Catalana de Recerca i Estudis Avançats
2020
Utrecht University
2009-2019
University of Amsterdam
2003-2005
The Netherlands Cancer Institute
2005
The Earth system model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major configurations, a methodology ensuring the simulations are comparable across different high-performance computing (HPC) systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behavior biases well within frame known from recent CMIP models. With...
Abstract. Knowledge of the ice thickness distribution glaciers and caps is an important prerequisite for many glaciological hydrological investigations. A wealth approaches has recently been presented inferring from characteristics surface. With Ice Thickness Models Intercomparison eXperiment (ITMIX) we performed first coordinated assessment quantifying individual model performance. set 17 different models showed that estimates can differ considerably – locally by a spread comparable to...
Abstract. The Earth System Model EC-Earth3 for contributions to CMIP6 is documented here, with its flexible coupling framework, major model configurations, a methodology ensuring the simulations are comparable across different HPC systems, and physical performance of base configurations over historical period. variety possible sub-models reflects broad interests in EC-Earth community. key metrics demonstrate behaviour biases well within frame known from recent CMIP models. With improved...
Abstract. This paper documents the global climate model EC-Earth3-AerChem, one of members EC-Earth3 family models participating in Coupled Model Intercomparison Project Phase 6 (CMIP6). EC-Earth3-AerChem has interactive aerosols and atmospheric chemistry contributes to Aerosols Chemistry (AerChemMIP). In this paper, we give an overview model, describe detail how it differs from other configurations, outline new features compared with previously documented version (EC-Earth 2.4). We explain...
Abstract. Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of Antarctic ice sea level rise over coming centuries. The influence initial conditions on model simulations, however, still unclear. To better understand this influence, state intercomparison exercise (initMIP) has been developed compare, evaluate, and improve initialization procedures their impact century-scale simulations. initMIP first set experiments Sheet Model Intercomparison Project for...
Abstract Many nations responded to the corona virus disease‐2019 (COVID‐19) pandemic by restricting travel and other activities during 2020, resulting in temporarily reduced emissions of CO 2 , greenhouse gases ozone aerosol precursors. We present initial results from a coordinated Intercomparison, CovidMIP, Earth system model simulations which assess impact on climate these reductions. 12 models performed multiple initial‐condition ensembles produce over 300 spanning both condition...
Knowing the ice thickness distribution of a glacier is fundamental importance for number applications, ranging from planning glaciological fieldwork to assessments future sea-level change. Across spatial scales, however, this knowledge limited by paucity and discrete character available observations. To obtain spatially coherent thickness, interpolation or numerical models have be used. Whilst first phase Ice Thickness Models Intercomparison eXperiment (ITMIX) focused on approaches that...
Abstract To achieve the 1.5°C target of Paris agreement, rapid, sustained, and deep emission reductions are required, which often includes negative emissions through land‐based mitigation. However, effects future land‐use change on climate not considered when quantifying climate‐induced impacts human heat stress labor capacity. By conducting simulations with three fully coupled Earth System Models, we project outdoor capacity for two contrasting scenarios under high‐ambition Achieving a...
Abstract The Radiative Forcing Model Intercomparison Project (RFMIP) allows estimates of effective radiative forcing (ERF) in the Coupled phase six (CMIP6). We analyze RFMIP output, including new experiments from models that use same parameterization for anthropogenic aerosols (RFMIP‐SpAer), to characterize and better understand model differences aerosol ERF. find little changes ERF 1970–2014 CMIP6 multi‐model mean, which implies greenhouse gases primarily explain positive trend total...
Abstract This paper presents the methodology for construction of KNMI'23 national climate scenarios Netherlands. We have developed six scenarios, that cover a substantial part uncertainty in CMIP6 projections future change region. Different sources are disentangled as much possible, partly by means storyline approach. Uncertainty emissions is covered making conditional on different SSP (SSP1‐2.6, SSP2‐4.5, and SSP5‐8.5). For each scenario time horizon (2050, 2100, 2150), we determine global...
We present results from our ongoing follow-up observations of double white dwarf binaries detected in the ESO SN Ia Progenitor SurveY (SPY). discuss observing strategy and data analysis orbital solutions five close binaries: HE0320-1917, HE1511-0448, WD0326-273, WD1013-010 WD1210+140. Their periods range 0.44 to 3.22 days. In none these systems we find any spectral lines originating companion. This rules out main sequence companions indicates that companion dwarfs are significantly older...
Abstract. Ice-dynamical processes constitute a large uncertainty in future projections of sea-level rise caused by anthropogenic climate change. Improving our understanding these requires ice-sheet models that perform well at simulating both past and evolution. Here, we present version 2.0 the model IMAU-ICE, which uses depth-integrated viscosity approximation (DIVA) to solve stress balance. We evaluate its performance range benchmark experiments, including simple analytical solutions...
Sea level is projected to rise in the coming centuries as a result of changing climate. One major uncertainties contribution ice sheets Greenland and Antarctica sea-level (SLR). Here, we study impact different shapes uncertainty distributions on so-called allowances. An allowance indicates height coastal structure needs be elevated keep same frequency likelihood extremes under amount mean SLR. Allowances are always larger than Their magnitude depends several factors, such projection typical...
Abstract. Observational evidence, including offshore moraines and sediment cores, confirm that at the Last Glacial Maximum (LGM) Greenland ice sheet (GrIS) expanded to a significantly larger spatial extent than seen present, grounding into Baffin Bay out onto continental shelf break. Given this its close proximity neighbouring Laurentide Ice Sheet (LIS) Innuitian (IIS), it is likely these sheets will have had strong non-local influence on temporal behaviour of GrIS. Most previous paleo...
Abstract. This paper accompanies the second OBLIMAP open-source release. The package is developed to map climate fields between a general circulation model (GCM) and an ice sheet (ISM) in both directions by using optimal aligned oblique projections, which minimize distortions. curvature of surfaces GCM ISM grid differ, grids may be irregularly spaced ratio allowed differ largely. OBLIMAP's stand-alone version able data sets that various aspects on same grid. Each either coincide with surface...
Abstract. In boreal summer, circumglobal Rossby waves can promote stagnating weather systems that favor extreme events like heat or droughts. Recent work showed amplified wavenumber 5 and 7 show phase-locking behavior which trigger simultaneous warm anomalies in different breadbasket regions the Northern Hemisphere. These types of wave patterns thus pose a potential threat to human health ecosystems. The representation such persistent summer their surface general circulation models (GCMs)...
Abstract. Large-ensemble modelling has become an increasingly popular approach to studying the mean climate and system’s internal variability in response external forcing. Here we present Royal Netherlands Meteorological Institute (KNMI) Large Ensemble Time Slice (KNMI–LENTIS): a new large ensemble produced with re-tuned version of global model EC-Earth3. The consists two distinct time slices 10 years each: present-day slice +2 K warmer future relative day. initial conditions for members are...
Abstract. The albedo of the surface ice sheets changes as a function time due to effects deposition new snow, ageing dry bare exposure, melting and run-off. Currently, calculation is highly parameterized within earth system model EC-Earth by taking constant value for areas with thick perennial snow cover. This an important reason why mass balance (SMB) Greenland sheet (GrIS) poorly resolved in model. purpose this study improve SMB forcing GrIS evaluating different parameter settings scheme....
Abstract. Here, we present a mapping method OBLIMAP, which projects and interpolates fields like surface temperature, mass balance, height between geographical based coordinate system of General Circulation Model (GCM) rectangular Ice (IM). We derive an oblique stereographic projection its inverse, holds for any area at the Earth's surface, can be combined with two different interpolation methods. The first one is suited to interpolate projected coarse GCM grid on fine meshed IM grid. second...
Abstract. Currently a paradigm shift is made from global averaged to spatially variable sea level change (SLC) projections. Traditionally, the contribution ice sheet mass loss SLC considered be symmetrically distributed. However, several assessments suggest that probability distribution of dynamical asymmetrically distributed towards higher values. Here we show how asymmetric distributions impact high-end uncertainties regional projections across globe. For this purpose use presented by...
Abstract. Knowledge of the ice thickness distribution glaciers and caps is an important prerequisite for many glaciological hydrological investigations. A wealth approaches has recently been presented inferring from characteristics surface. With Ice Thickness Models Intercomparison eXperiment (ITMIX) we performed first coordinated assessment quantifying individual model performance. set 17 different models showed that estimates can differ considerably – locally by a spread comparable to...
Abstract. This paper documents the global climate model EC-Earth3-AerChem, one of members EC-Earth3 family models participating in Coupled Model Intercomparison Project phase 6 (CMIP6). EC-Earth3-AerChem has interactive aerosols and atmospheric chemistry contributes to Aerosols Chemistry (AerChemMIP). In this paper, we give an overview describe detail how it differs from other configurations, what new features are compared previously documented version (EC-Earth 2.4). We explain was tuned...
Abstract The simulated stratospheric dynamics have been improved compared to previous generations in many climate models taking part the Coupled Model Intercomparison Project Phase 6 (CMIP6). This was achieved by going from low high‐top configurations, that is, increasing atmospheric vertical resolution, raising model lid height and including parameterization schemes, such as non‐orographic gravity wave drag (GWD), simulate small‐scale processes. also applies EC‐Earth model, for which...