A5053331098- Meteorological Phenomena and Simulations
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Tropical and Extratropical Cyclones Research
- Geophysics and Gravity Measurements
- Advanced Thermodynamics and Statistical Mechanics
- Fluid Dynamics and Turbulent Flows
- Ionosphere and magnetosphere dynamics
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Atmospheric Ozone and Climate
- Earthquake Detection and Analysis
- Geological Modeling and Analysis
- Distributed and Parallel Computing Systems
- Winter Sports Injuries and Performance
- Oceanographic and Atmospheric Processes
- Climate Change Policy and Economics
- Atmospheric aerosols and clouds
- demographic modeling and climate adaptation
- Peatlands and Wetlands Ecology
- Geological and Geophysical Studies Worldwide
European Centre for Medium-Range Weather Forecasts
2021-2024
Reading Museum
2024
Max Planck Institute for Meteorology
2014-2021
Max Planck Society
2014-2015
A new release of the Max Planck Institute for Meteorology Earth System Model version 1.2 (MPI-ESM1.2) is presented. The development focused on correcting errors in and improving physical processes representation, as well computational performance, versatility, overall user friendliness. In addition to radiation aerosol parameterizations atmosphere, several relatively large, but partly compensating, coding model's cloud, convection, turbulence were corrected. representation land was refined...
General circulation models show that as the surface temperature increases, convective anvil clouds shrink. By analyzing radiative-convective equilibrium simulations, we this behavior is rooted in basic energetic and thermodynamic properties of atmosphere: As climate warms, rise remain at nearly same temperature, but find themselves a more stable atmosphere; enhanced stability reduces outflow upper troposphere decreases cloud fraction. warming increasing upper-tropospheric stability,...
Abstract The Radiative‐Convective Equilibrium Model Intercomparison Project (RCEMIP) is an intercomparison of multiple types numerical models configured in radiative‐convective equilibrium (RCE). RCE idealization the tropical atmosphere that has long been used to study basic questions climate science. Here, we employ investigate role clouds and convective activity play determining cloud feedbacks, sensitivity, state aggregation, climate. RCEMIP unique among intercomparisons its inclusion a...
Abstract The representation of tropical precipitation is evaluated across three generations models participating in phases 3, 5, and 6 the Coupled Model Intercomparison Project (CMIP). Compared to state-of-the-art observations, improvements CMIP6 are identified for some metrics, but we find no general improvement on different temporal spatial scales. Our results indicate overall little changes CMIP summer monsoons, double-ITCZ bias, diurnal cycle precipitation. We a reduced amount drizzle...
Abstract. We report on the first multi-year kilometre-scale global coupled simulations using ECMWF's Integrated Forecasting System (IFS) to both NEMO and FESOM ocean–sea ice models, as part of H2020 Next Generation Earth Modelling Systems (nextGEMS) project. focus mainly an unprecedented IFS-FESOM setup, with atmospheric resolution 4.4 km a spatially varying ocean that reaches locally below 5 grid spacing. A shorter simulation 2.8 has also been performed. number shortcomings in original...
Basic climate statistics, such as water and energy budgets, location width of the Intertropical Convergence Zone (ITCZ), trimodal tropical cloud distribution, position polar jet, land sea contrast, remain either biased in coarse-resolution general circulation models or are tuned.Here, we examine horizontal resolution dependency statistics a set global convection-permitting simulations integrated with ICOsahedral Non-hydrostatic (ICON) model, explicit convection, grid spacings ranging from 80...
Abstract. We report on the first multi-year km-scale global coupled simulations using ECMWF’s Integrated Forecasting System (IFS) to both NEMO and FESOM ocean-sea ice models, as part of Horizon 2020 Next Generation Earth Modelling Systems (nextGEMS) project. focus mainly two unprecedented IFS-FESOM setups, with an atmospheric resolution 2.8 km 4.4 km, respectively, same spatially varying ocean that reaches locally below 5 grid-spacing. This is enabled by a refactored model code allows for...
Abstract Radiative‐convective equilibrium simulations with the general circulation model ECHAM6 are used to explore what extent dependence of large‐scale convective self‐aggregation on sea‐surface temperature (SST) is driven by parameterization. Within parameterization, we concentrate entrainment parameter and show that independent SST when rate for deep convection set zero or parameterization removed from model. In former case, always aggregates very weakly, whereas in latter strongly. With...
Abstract We analyse how the representation of deep convection affects characteristics convective precipitation over tropical Africa in global storm‐resolving simulations with European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS). The consist 48 hr forecasts initiated daily at 0000 UTC a 40‐day period August and September 2016, 9 4 km resolution. find that results agree best satellite retrieval Global Precipitation Measurement (GPM) Multi‐satellitE...
Abstract. The Next Generation of Earth Modeling Systems (nextGEMS) project aimed to produce multi-decadal climate simulations, for the first time, with resolved kilometer-scale (km-scale) processes in ocean, land, and atmosphere. In only three years, nextGEMS achieved this milestone two km-scale system models, ICOsahedral Non-hydrostatic model (ICON) Integrated Forecasting System coupled Finite-volumE Sea ice-Ocean Model (IFS-FESOM). was based on cornerstones: 1) developing models small...
We report on the first multi-year kilometre-scale global coupled simulations using ECMWF's Integrated Forecasting System (IFS) to both NEMO and FESOM ocean–sea ice models, as part of H2020 Next Generation Earth Modelling Systems (nextGEMS) project. focus mainly an unprecedented IFS-FESOM setup, with atmospheric resolution 4.4 km a spatially varying ocean that reaches locally below 5 km grid spacing. A shorter simulation 2.8 km has also been performed....
The Climate Adaptation Digital Twin within the Destination Earth project represents an innovative initiative aimed at achieving operational kilometer-scale global climate simulations to support adaptation efforts. Three state-of-the-art System Models (ESMs) are used separately and we focusing on scientific advancements simulation results of IFS-NEMO model throughout project's duration.During first phase project, two main were produced: a historical experiment (1990–2019) 10 km...
Abstract To investigate how entrainment is influenced by convective organization, we use the ICON (ICOsahedral Nonhydrostatic) model in a radiative‐convective equilibrium framework, with 1 km spatial grid mesh covering 600 520 2 domain. We analyze two simulations, unaggregated and aggregated convection, find that, lower free troposphere, bulk rate increases when convection aggregates. The increase of aggregation caused strong turbulence close environment updrafts, masking other effects like...
Abstract The Radiative‐Convective Equilibrium Model Intercomparison Project (RCEMIP) consists of simulations at three fixed sea‐surface temperatures (SSTs: 295, 300, and 305 K) thus allows for a calculation the climate feedback parameter based on change top‐of‐atmosphere radiation imbalance. Climate parameters range widely across RCEMIP, roughly from − 6 to 3 W m −2 K −1 , particularly general‐circulation models (GCMs) as well global large‐domain cloud‐resolving (CRMs). Small‐domain CRMs...
Abstract The comprehensive general circulation model ECHAM6 is used in a radiative‐convective equilibrium configuration. It coupled to perfectly conducting slab. To understand the local impact of thermodynamic surface properties on land‐ocean warming contrast, latent heat flux and capacity are reduced stepwise, aiming for land‐like climate. Both ocean‐like RCE simulation reproduce tropical atmosphere over ocean land satisfactory manner lead reasonable ratios. A small induces high diurnal...
In radiative-convective equilibrium (RCE), radiative cooling of the troposphere is roughly balanced by vaporization enthalpy set free precipitating moist convection. Many earlier studies restricted investigation RCE to dynamics atmosphere with constant boundary conditions including prescribed surface temperature. We investigate a GCM setup where slab ocean coupled atmosphere, and we explore wide range CO<sub>2</sub> concentrations. obtain reliable statistical quantities from...
Results are presented from a two-dimensional model of the stratosphere that simulates seasonal movement ozone by both wind and eddy transport, contains all chemistry known to be important. The calculated reductions in due NO2 injection fleet supersonic transports compared with zonally averaged results three-dimensional for similar episode injection. agreement is good northern hemisphere, but not as southern hemisphere. Both sets calculations show strong corridor effect predicted depletions...
Abstract In this study, we estimate bulk entrainment rates for deep convection in convection-permitting simulations, conducted over the tropical Atlantic Ocean, encompassing parts of Africa and South America. We find that, even though decrease with height all regions, they are, when averaging between 600 800 hPa, generally higher land than ocean. This is so because, Amazonia, shallow causes an increase at lower levels West Africa, where are highest, organized squall lines. These lines...
As extreme precipitation events become more frequent and intense, local-scale climate services are increasingly needed to help communities adapt. We here evaluate two fully-coupled convection-permitting Earth System Models for their ability resolve mesoscale weather events. Using the Integrated Forecasting (IFS) Icosahedral Nonhydrostatic Weather Climate Model (ICON) within Next Generation Modelling Systems (nextGEMS) project, we depiction of with a focus on Mediterranean region through...
The nextGEMS project is dedicated to develop global coupled earth-system models for multidecadal climate projections at a kilometre-scale resolution. By harnessing the strengths of high spatial resolution, seeks improve representation physical processes and provide information scales that align with real-world measurements. Preparing 30-year production runs, has achieved significant milestones, including successful completion five-year runs 5 km resolution by two different Earth-System...
At the end of first phase Destination Earth initiative in May 2024, ECMWF will deliver a prototype global component Weather-Induced Extremes Digital Twin (or Global DT). The DT monitor worldwide extreme weather events up to 5 days ahead and at an atmospheric resolution km. Furthermore, it incorporates two impact sector models: CaMa-Flood river routing model for predicting flood risk, flexible aerosol scheme that monitors selected species, contributing air quality assessment. Since August...
In this study, we compare convection characteristics in three models that are at the forefront of global km-scale modelling, ICON model developed by Max Planck Institute for Meteorology (MPI-M) and German Weather Service (DWD), IFS European Centre Medium-Range Forecasts (ECMWF), NICAM University Tokyo, Japan Agency Marine-Earth Science Technology (JAMSTEC) National Environmental Studies (NIES). For ICON, analyse 1-year coupled simulations 4.4 5 km resolution, respectively, which stem from...