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Showing 26751 to 26800 of 59105 works
Optimisation of the simulation particle number in a Lagrangian ice microphysical model
Abstract. This paper presents various techniques to speed up the Lagrangian ice microphysics code EULAG-LCM. The amount of CPU time (and also memory and storage data) depends heav…
Evaluation of iterative Kalman smoother schemes for multi-decadal past climate analysis with comprehensive Earth system…
Abstract. Paleoclimate reconstruction based on assimilation of proxy observations requires specification of the control variables and their background statistics. As opposed to nu…
Development and application of the WRFPLUS-Chem online chemistry adjoint and WRFDA-Chem assimilation system
Abstract. Here we present the online meteorology and chemistry adjoint and tangent linear model, WRFPLUS-Chem (Weather Research and Forecasting plus chemistry), which incorporates…
Advanced parallel implementation of the coupled ocean–ice model FEMAO (version 2.0) with load balancing
Abstract. In this paper, we present a parallel version of the finite-element model of the Arctic Ocean (FEMAO) configured for the White Sea and based on MPI technology. This model…
Numerical framework for the computation of urban flux footprints employing large-eddy simulation and Lagrangian stochas…
Abstract. Conventional footprint models cannot account for the heterogeneity of the urban landscape imposing a pronounced uncertainty on the spatial interpretation of eddy-covaria…
FORTE 2.0: a fast, parallel and flexible coupled climate model
Abstract. FORTE 2.0 is an intermediate-resolution coupled atmosphere–ocean general circulation model (AOGCM) consisting of the Intermediate General Circulation Model 4 (IGCM4), a …
PM <sub>2.5</sub> ∕ PM <sub>10</sub> r…
Abstract. Air pollution is a serious problem in China that urgently needs to be addressed. Air pollution has a great impact on the lives of citizens and on urban development. The …
A nonlinear multi-proxy model based on manifold learning to reconstruct water temperature from high resolution trace el…
Abstract. A long standing problem in paleoceanography concerns the reconstruction of water temperature from δ18O carbonate. It is problematic in the case of freshwater influenced …
3-D radiative transfer in large-eddy simulations – experiences coupling the TenStream solver to the UCLA-LES
Abstract. The recently developed 3-D TenStream radiative transfer solver was integrated into the University of California, Los Angeles large-eddy simulation (UCLA-LES) cloud-resol…
How should sparse marine in situ measurements be compared to a continuous model: an example
Abstract. This work demonstrates an example of the importance of an adequate method to sub-sample model results when comparing with in situ measurements. A test of model skill was…
A new subgrid-scale representation of hydrometeor fields using a multivariate PDF
Abstract. The subgrid-scale representation of hydrometeor fields is important for calculating microphysical process rates. In order to represent subgrid-scale variability, the Clo…
Assessing the uncertainty of glacier mass-balance simulations in the European Arctic based on variance decomposition
Abstract. State-of-the-art numerical snowpack models essentially rely on observational data for initialization, forcing, parametrization, and validation. Such data are available i…
CranSLIK v1.0: stochastic prediction of oil spill transport and fate using approximation methods
Abstract. This paper investigates the development of a model, called CranSLIK, to predict the transport and transformations of a point mass oil spill via a stochastic approach. In…
The CSIRO Mk3L climate system model version 1.0 – Part 1: Description and evaluation
Abstract. The CSIRO Mk3L climate system model is a coupled general circulation model, designed primarily for millennial-scale climate simulations and palaeoclimate research. Mk3L …
All aboard! Earth system investigations with the CH2O-CHOO TRAIN v1.0
Abstract. Models of the carbon cycle and climate on geologic (>104-year) timescales have improved tremendously in the last 50 years due to parallel advances in our understanding o…
CSDMS Data Components: data–model integration tools for Earth surface processes modeling
Abstract. Progress in better understanding and modeling Earth surface systems requires an ongoing integration of data and numerical models. Advances are currently hampered by tech…
CoCoMET v1.0: a unified open-source toolkit for atmospheric object tracking and analysis
Abstract. Advances in performance and analysis capabilities have accelerated the development of object tracking algorithms for atmospheric research. This has resulted in a growing…
Model calibration using ESEm v1.1.0 – an open, scalable Earth system emulator
Abstract. Large computer models are ubiquitous in the Earth sciences. These models often have tens or hundreds of tuneable parameters and can take thousands of core hours to run t…
Biogenic isoprene emissions driven by regional weather predictions using different initialization methods: case studies…
Abstract. Land and atmospheric initial conditions of the Weather Research and Forecasting (WRF) model are often interpolated from a different model output. We perform case studies…
Modeling boreal forest soil dynamics with the microbially explicit soil model MIMICS+ (v1.0)
Abstract. Understanding carbon exchange processes between land reservoirs and the atmosphere is essential for predicting carbon–climate feedbacks. Still, considerable uncertainty …
Developing a parsimonious canopy model (PCM v1.0) to predict forest gross primary productivity and leaf area index of d…
Abstract. Temperate forest ecosystems play a crucial role in governing global carbon and water cycles. However, unprecedented global warming presents fundamental alterations to th…
LAND-SE: a software for statistically based landslide susceptibility zonation, version 1.0
Abstract. Landslide susceptibility (LS) assessment provides a relative estimate of landslide spatial occurrence based on local terrain conditions. A literature review revealed tha…
Regional scale ozone data assimilation using an ensemble Kalman filter and the CHIMERE chemical transport model
Abstract. An ensemble Kalman filter (EnKF) has been coupled to the CHIMERE chemical transport model in order to assimilate ozone ground-based measurements on a regional scale. The…
Constraining DALECv2 using multiple data streams and ecological constraints: analysis and application
Abstract. We use a variational method to assimilate multiple data streams into the terrestrial ecosystem carbon cycle model DALECv2 (Data Assimilation Linked Ecosystem Carbon). Ec…
Connecting spatial and temporal scales of tropical precipitation in observations and the MetUM-GA6
Abstract. This study analyses tropical rainfall variability (on a range of temporal and spatial scales) in a set of parallel Met Office Unified Model (MetUM) simulations at a rang…
Computation of longwave radiative flux and vertical heating rate with 4A-Flux v1.0 as an integral part of the radiative…
Abstract. Based on advanced spectroscopic databases, line-by-line and layer-by-layer radiative transfer codes numerically solve the radiative transfer equation with very high accu…
The ISIMIP groundwater sector: a framework for ensemble modeling of global change impacts on groundwater
Abstract. Groundwater serves as a crucial freshwater resource for people and ecosystems, playing a vital role in adapting to climate change. Yet, its availability and dynamics are…
CE-DYNAM (v1): a spatially explicit process-based carbon erosion scheme for use in Earth system models
Abstract. Soil erosion by rainfall and runoff is an important process behind the redistribution of soil organic carbon (SOC) over land, thereby impacting the exchange of carbon (C…
A multilayer approach and its application to model a local gravimetric quasi-geoid model over the North Sea: QGNSea V1.0
Abstract. A multilayer approach is set up for local gravity field recovery within the framework of multi-resolution representation, where the gravity field is parameterized as the…
The Coastline Evolution Model 2D (CEM2D) V1.1
Abstract. Coasts are among the most intensely used environments on the planet, but they also present dynamic and unique hazards, including flooding and erosion. Sea level rise and…
A circulation-based performance atlas of the CMIP5 and 6 models for regional climate studies in the Northern Hemisphere…
Abstract. Global climate models are a keystone of modern climate research. In most applications relevant for decision making, they are assumed to provide a plausible range of poss…
Variational regional inverse modeling of reactive species emissions with PYVAR-CHIMERE-v2019
Abstract. Up-to-date and accurate emission inventories for air pollutants are essential for understanding their role in the formation of tropospheric ozone and particulate matter …
Energy-conserving physics for nonhydrostatic dynamics in mass coordinate models
Abstract. Motivated by reducing errors in the energy budget related to enthalpy fluxes within the Energy Exascale Earth System Model (E3SM), we study several physics–dynamics coup…
Empirical values and assumptions in the convection schemes of numerical models
Abstract. Convection influences climate and weather events over a wide range of spatial and temporal scales. Therefore, accurate predictions of the time and location of convection…
A new version of the CABLE land surface model (Subversion revision r4601) incorporating land use and land cover change,…
Abstract. The Community Atmosphere–Biosphere Land Exchange model (CABLE) is a land surface model (LSM) that can be applied stand-alone and provides the land surface–atmosphere exc…
Improving the global applicability of the RUSLE model – adjustment of the topographical and rainfall erosivity factors
Abstract. Large uncertainties exist in estimated rates and the extent of soil erosion by surface runoff on a global scale. This limits our understanding of the global impact that …
Evaluation of global ocean–sea-ice model simulations based on the experimental protocols of the Ocean Model Intercompar…
Abstract. We present a new framework for global ocean–sea-ice model simulations based on phase 2 of the Ocean Model Intercomparison Project (OMIP-2), making use of the surface dat…
Incorporation of lumped IVOC emissions into the ORACLE model (V1.1): a multi-product framework for assessing global S…
Abstract. Secondary organic aerosol (SOA) is a major component of particulate matter but is often underpredicted in chemistry climate models. Recent advances in measuring and reso…
Air quality forecasts on a kilometer-scale grid over complex Spanish terrains
Abstract. The CALIOPE Air Quality Forecast System (CALIOPE-AQFS) represents the current state of the art in air quality forecasting systems of high-resolution running on high-perf…
A comprehensive assessment of tropical stratospheric upwelling in the specified dynamics Community Earth System Model 1…
Abstract. Specified dynamics (SD) schemes relax the circulation in climate models toward a reference meteorology to simulate historical variability. These simulations are widely u…
The Eulerian urban dispersion model EPISODE – Part 2: Extensions to the source dispersion and photochemistry for EPISOD…
Abstract. This paper describes the CityChem extension of the Eulerian urban dispersion model EPISODE. The development of the CityChem extension was driven by the need to apply the…
BOATSv2: new ecological and economic features improve simulations of high seas catch and effort
Abstract. Climate change and industrial fishing are having profound effects on marine ecosystems. Numerical models of fish communities and their interaction with fishing can help …
Toward an open access to high-frequency lake modeling and statistics data for scientists and practitioners – the case o…
Abstract. One-dimensional hydrodynamic models are nowadays widely recognized as key tools for lake studies. They offer the possibility to analyze processes at high frequency, here…
The <i>ddeq</i> Python library for point source quantification from remote sens…
Abstract. Atmospheric emissions from anthropogenic hotspots, i.e., cities, power plants and industrial facilities, can be determined from remote sensing images obtained from airbo…
Three-dimensional visualization of ensemble weather forecasts – Part 1: The visualization tool Met.3D (version 1.0)
Abstract. We present "Met.3D", a new open-source tool for the interactive three-dimensional (3-D) visualization of numerical ensemble weather predictions. The tool has been develo…
Experimental protocol for phase 1 of the APARC QUOCA (QUasibiennial oscillation and Ozone Chemistry interactions in t…
Abstract. The quasi-biennial oscillation (QBO) is the main mode of variability in the tropical stratosphere, influencing the predictability of other regions in the atmosphere thro…
A fast surrogate model for 3D Earth glacial isostatic adjustment using Tensorflow (v2.8.0) artificial neural networks
Abstract. Models of glacial isostatic adjustment (GIA) play a central role in the interpretation of various geologic and geodetic data to understand and simulate past and future c…
The Wageningen Lowland Runoff Simulator (WALRUS): a lumped rainfall–runoff model for catchments with shallow groundwater
Abstract. We present the Wageningen Lowland Runoff Simulator (WALRUS), a novel rainfall–runoff model to fill the gap between complex, spatially distributed models which are often …
HEMCO v1.0: a versatile, ESMF-compliant component for calculating emissions in atmospheric models
Abstract. We describe the Harvard–NASA Emission Component version 1.0 (HEMCO), a stand-alone software component for computing emissions in global atmospheric models. HEMCO determi…
PALM-meteo 2.8: Processor of PALM meteorological input data
Abstract. PALM is a versatile and modular microscale atmospheric modelling system. It supports offline nesting using pre-processed initial and boundary conditions provided via the…
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