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Showing 25151 to 25200 of 59105 works
WRF-PDAF v1.0: implementation and application of an online localized ensemble data assimilation framework
Abstract. Data assimilation is a common technique employed to estimate the state and its associated uncertainties in numerical models. Ensemble-based methods are a prevalent choic…
An improved subgrid channel model with upwind-form artificial diffusion for river hydrodynamics and floodplain inundati…
Abstract. An accurate estimation of river channel conveyance capacity and the water exchange at the river–floodplain interfaces is pivotal for flood modelling. However, in large-s…
TAMSAT-ALERT v1: a new framework for agricultural decision support
Abstract. Early warning of weather-related hazards enables farmers, policy makers and aid agencies to mitigate their exposure to risk. We present a new operational framework, Trop…
How biased are our models? – a case study of the alpine region
Abstract. Geophysical process simulations play a crucial role in the understanding of the subsurface. This understanding is required to provide, for instance, clean energy sources…
ANEMI_Yangtze v1.0: a coupled human–natural systems model for the Yangtze Economic Belt – model description
Abstract. The Yangtze Economic Belt (hereafter, the Belt) is one of the most dynamic regions in China in terms of population growth, economic progress, industrialization, and urba…
Inequality-constrained free-surface evolution in a full Stokes ice flow model ( <i>evolve_glacier v…
Abstract. Like any gravitationally driven flow that is not constrained at the upper surface, glaciers and ice sheets feature a free surface, which becomes a free-boundary problem …
Reproducing complex simulations of economic impacts of climate change with lower-cost emulators
Abstract. Process-based models are powerful tools for simulating the economic impacts of climate change, but they are computationally expensive. In order to project climate-change…
Development of BFMCOUPLER (v1.0), the coupling scheme that links the MITgcm and BFM models for ocean biogeochemistry si…
Abstract. In this paper, we present a coupling scheme between the Massachusetts Institute of Technology general circulation model (MITgcm) and the Biogeochemical Flux Model (BFM).…
A sub-canopy structure for simulating oil palm in the Community Land Model (CLM-Palm): phenology, allocation and yield
Abstract. In order to quantify the effects of forests to oil palm conversion occurring in the tropics on land–atmosphere carbon, water and energy fluxes, we develop a new perennia…
Analysis of the impact of inhomogeneous emissions in the Operational Street Pollution Model (OSPM)
Abstract. Semi-parameterized street canyon models, as e.g. the Operational Street Pollution Model (OSPM®), have been frequently applied for the last two decades to analyse levels …
A model of Black Sea circulation with strait exchange (2008–2018)
Abstract. The Bosphorus exchange is of critical importance for hydrodynamics and hydroclimatology of the Black Sea. In this study, we report on the development of a medium-resolut…
MM5 v3.6.1 and WRF v3.5.1 model comparison of standard and surface energy variables in the development of the planetary…
Abstract. Air quality forecasting requires atmospheric weather models to generate accurate meteorological conditions, one of which is the development of the planetary boundary lay…
A derivative-free optimisation method for global ocean biogeochemical models
Abstract. The skill of global ocean biogeochemical models, and the earth system models in which they are embedded, can be improved by systematic calibration of the parameter value…
Enhancing the representation of subgrid land surface characteristics in land surface models
Abstract. Land surface heterogeneity has long been recognized as important to represent in the land surface models. In most existing land surface models, the spatial variability o…
A global scavenging and circulation ocean model of thorium-230 and protactinium-231 with improved particle dynamics (NE…
Abstract. In this paper we set forth a 3-D ocean model of the radioactive trace isotopes 230Th and 231Pa. The interest arises from the fact that these isotopes are extensively use…
The implementation of NEMS GFS Aerosol Component (NGAC) Version 2.0 for global multispecies forecasting at NOAA/NCEP – …
Abstract. An accurate representation of aerosols in global numerical weather prediction (NWP) models is important to predict major air pollution events and to also understand aero…
Operational numerical weather prediction with ICON on GPUs (version 2024.10)
Abstract. Numerical weather prediction and climate models require continuous adaptation to take advantage of advances in high-performance computing hardware. This paper presents t…
Comparison of spatial downscaling methods of general circulation model results to study climate variability during the …
Abstract. The extent to which climate conditions influenced the spatial distribution of hominin populations in the past is highly debated. General circulation models (GCMs) and ar…
Nemo-Nordic 1.0: a NEMO-based ocean model for the Baltic and North seas – research and operational applications
Abstract. We present Nemo-Nordic, a Baltic and North Sea model based on the NEMO ocean engine. Surrounded by highly industrialized countries, the Baltic and North seas and their a…
Implementation of a soil albedo scheme in the CABLEv1.4b land surface model and evaluation against MODIS estimates over…
Abstract. Land surface albedo, the fraction of incoming solar radiation reflected by the land surface, is a key component of the Earth system. This study evaluates snow-free surfa…
Assessing the robustness and scalability of the accelerated pseudo-transient method
Abstract. The development of highly efficient, robust and scalable numerical algorithms lags behind the rapid increase in massive parallelism of modern hardware. We address this c…
Global tropospheric effects of aromatic chemistry with the SAPRC-11 mechanism implemented in GEOS-Chem version 9-02
Abstract. The Goddard Earth Observing System with chemistry (GEOS-Chem) model has been updated with the State-wide Air Pollution Research Center version 11 (SAPRC-11) aromatics ch…
HyPhAICC v1.0: a hybrid physics–AI approach for probability fields advection shown through an application to cloud cove…
Abstract. This work proposes a hybrid approach that combines physics and artificial intelligence (AI) for cloud cover nowcasting. It addresses the limitations of traditional deep-…
Emulation of high-resolution land surface models using sparse Gaussian processes with application to JULES
Abstract. Land surface models are typically integrated into global climate projections, but as their spatial resolution increases the prospect of using them to aid in local policy…
A novel numerical implementation for the surface energy budget of melting snowpacks and glaciers
Abstract. The surface energy budget drives the melt of the snow cover and glacier ice and its computation is thus of crucial importance in numerical models. This surface energy bu…
Topological data analysis and machine learning for recognizing atmospheric river patterns in large climate datasets
Abstract. Identifying weather patterns that frequently lead to extreme weather events is a crucial first step in understanding how they may vary under different climate change sce…
Evaluation of the COSMO model (v5.1) in polarimetric radar space – impact of uncertainties in model microphysics, retri…
Abstract. Sensitivity experiments with a numerical weather prediction (NWP) model and polarimetric radar forward operator (FO) are conducted for a long-duration stratiform event o…
Implementation of the Community Earth System Model (CESM) version 1.2.1 as a new base model into version 2.50 of the ME…
Abstract. The Community Earth System Model (CESM1), maintained by the United States National Centre for Atmospheric Research (NCAR) is connected with the Modular Earth Submodel Sy…
Three-dimensional methane distribution simulated with FLEXPART 8-CTM-1.1 constrained with observation data
Abstract. A Lagrangian particle dispersion model, the FLEXible PARTicle dispersion chemical transport model (FLEXPART CTM), is used to simulate global three-dimensional fields of …
A crop yield change emulator for use in GCAM and similar models: Persephone v1.0
Abstract. Future changes in Earth system state will impact agricultural yields and, through these changed yields, can have profound impacts on the global economy. Global gridded c…
Physics-motivated cell-octree adaptive mesh refinement in the Vlasiator 5.3 global hybrid-Vlasov code
Abstract. Automatically adaptive grid resolution is a common way of improving simulation accuracy while keeping computational efficiency at a manageable level. In space physics, a…
CICE on a C-grid: new momentum, stress, and transport schemes for CICEv6.5
Abstract. This article presents the C-grid implementation of the CICE sea ice model, including the C-grid discretization of the momentum equation, the boundary conditions (BCs), a…
A new Lagrangian in-time particle simulation module (Itpas v1) for atmospheric particle dispersion
Abstract. Trajectory models are intuitive tools for airflow studies. But in general, they are limited to non-turbulent, i.e. laminar flow, conditions. Therefore, trajectory models…
Earth System Model Evaluation Tool (ESMValTool) v2.0 – diagnostics for extreme events, regional and impact evaluation, …
Abstract. This paper complements a series of now four publications that document the release of the Earth System Model Evaluation Tool (ESMValTool) v2.0. It describes new diagnost…
Hydrostreamer v1.0 – improved streamflow predictions for local applications from an ensemble of downscaled global runof…
Abstract. An increasing number of different types of hydrological, land surface, and rainfall–runoff models exist to estimate streamflow in river networks. Results from various mo…
Evaluation of multi-season convection-permitting atmosphere – mixed-layer ocean simulations of the Maritime Continent
Abstract. A multi-season convection-permitting regional climate simulation of the Maritime Continent (MC) using the Met Office Unified Model (MetUM) with 2.2 km grid spacing is pr…
NorSand4AI: a comprehensive triaxial test simulation database for NorSand constitutive model materials
Abstract. In soil sciences, parametric models known as constitutive models (e.g., the Modified Cam Clay and the NorSand) are used to represent the behavior of natural and artifici…
FOCI-MOPS v1 – integration of marine biogeochemistry within the Flexible Ocean and Climate Infrastructure version 1 (FO…
Abstract. The consideration of marine biogeochemistry is essential for simulating the carbon cycle in an Earth system model. Here we present the implementation and evaluation of a…
STRAPS v1.0: evaluating a methodology for predicting electron impact ionisation mass spectra for the aerosol mass spect…
Abstract. Our ability to model the chemical and thermodynamic processes that lead to secondary organic aerosol (SOA) formation is thought to be hampered by the complexity of the s…
Vertical structure of cloud radiative heating in the tropics: confronting the EC-Earth v3.3.1/3P model with satellite o…
Abstract. Understanding the coupling of clouds to large-scale circulation is one of the grand challenges for the global climate research community. In this context, realistically …
CMIP6 simulations with the compact Earth system model OSCAR v3.1
Abstract. Reduced-complexity models, also called simple climate models or compact models, provide an alternative to Earth system models (ESMs) with lower computational costs, alth…
Implementation and evaluation of open boundary conditions for sea ice in a regional coupled ocean (ROMS) and sea ice (C…
Abstract. The Los Alamos Sea Ice Model (CICE) is used by several Earth system models where sea ice boundary conditions are not necessary, given their global scope. However, region…
Exploring a high-level programming model for the NWP domain using ECMWF microphysics schemes
Abstract. We explore the domain-specific Python library GT4Py (GridTools for Python) for implementing a representative physical parametrization scheme and the related tangent-line…
Performance evaluation of a throughput-aware framework for ensemble data assimilation: the case of NICAM-LETKF
Abstract. In this paper, we propose the design and implementation of an ensemble data assimilation (DA) framework for weather prediction at a high resolution and with a large ense…
The mechanism behind internally generated centennial-to-millennial scale climate variability in an earth system model o…
Abstract. The mechanism triggering centennial-to-millennial-scale variability of the Atlantic Meridional Overturning Circulation (AMOC) in the earth system model of intermediate c…
MATCH-SALSA – Multi-scale Atmospheric Transport and CHemistry model coupled to the SALSA aerosol microphysics model – P…
Abstract. We have implemented the sectional aerosol dynamics model SALSA (Sectional Aerosol module for Large Scale Applications) in the European-scale chemistry-transport model MA…
The regional aerosol-climate model REMO-HAM
Abstract. REMO-HAM is a new regional aerosol-climate model. It is based on the REMO regional climate model and includes most of the major aerosol processes. The structure for aero…
Parameterizing microphysical effects on variances and covariances of moisture and heat content using a multivariate pro…
Abstract. Microphysical processes, such as the formation, growth, and evaporation of precipitation, interact with variability and covariances (e.g., fluxes) in moisture and heat c…
Modelling the role of fires in the terrestrial carbon balance by incorporating SPITFIRE into the global vegetation mode…
Abstract. Fire is an important global ecological process that influences the distribution of biomes, with consequences for carbon, water, and energy budgets. Therefore it is impos…
Multi-model ensemble: technique and validation
Abstract. In this study, a method of numerical weather prediction by ensemble for the South American region is proposed. This method takes into account combinations of the numeric…
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