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Showing 26251 to 26300 of 59105 works

Implementation of street trees within the solar radiative exchange parameterization of TEB in SURFEX v8.0

Abstract. The Town Energy Balance (TEB) model has been refined and improved in order to explicitly represent street trees and their impacts on radiative transfer: a new vegetated …

Selecting a conceptual hydrological model using Bayes' factors computed with replica-exchange Hamiltonian Monte Carlo a…

Abstract. We develop a method for computing Bayes' factors of conceptual rainfall–runoff models based on thermodynamic integration, gradient-based replica-exchange Markov chain Mo…

Development of fully interactive hydrogen with methane in UKESM1.0

Abstract. Hydrogen is a potential candidate for an alternate energy source and carrier. As usage of hydrogen in industry rises, leakages into the atmosphere may occur, causing an …

The DLR CO <sub>2</sub> -equivalent estimator FlightClim v1.0: an easy-to-use e…

Abstract. As aviation's contribution to anthropogenic climate change is increasing, the sector aims at reducing its climate effect in accordance with international agreements. The…

CMIP7 Data Request: atmosphere priorities and opportunities

Abstract. This paper presents a comprehensive overview of the Coupled Model Intercomparison Project Phase 7 (CMIP7) request for data unlocking key research avenues in atmospheric …

Implementation of a comprehensive ice crystal formation parameterization for cirrus and mixed-phase clouds in the EMAC …

Abstract. A comprehensive ice nucleation parameterization has been implemented in the global chemistry-climate model EMAC to improve the representation of ice crystal number conce…

Optical model for the Baltic Sea with an explicit CDOM state variable: a case study with Model ERGOM (version 1.2)

Abstract. Colored dissolved organic matter (CDOM) in marine environments impacts primary production due to its absorption effect on the photosynthetically active radiation. In coa…

A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2

Abstract. Snow albedo schemes in regional climate models often lack a sophisticated radiation penetration scheme and generally compute only a broadband albedo. Here, we present th…

Improvements to the hydrological processes of the Town Energy Balance model (TEB-Veg, SURFEX v7.3) for urban modelling …

Abstract. Climate change and demographic pressures are affecting both the urban water balance and microclimate, thus amplifying urban flooding and the urban heat island phenomena.…

Using a surrogate-assisted Bayesian framework to calibrate the runoff-generation scheme in the Energy Exascale Earth Sy…

Abstract. Runoff is a critical component of the terrestrial water cycle, and Earth system models (ESMs) are essential tools to study its spatiotemporal variability. Runoff schemes…

Implementation of trait-based ozone plant sensitivity in the Yale Interactive terrestrial Biosphere model v1.0 to asses…

Abstract. A major limitation in modeling global ozone (O3) vegetation damage has long been the reliance on empirical O3 sensitivity parameters derived from a limited number of spe…

ORCHIDEE-SOM: modeling soil organic carbon (SOC) and dissolved organic carbon (DOC) dynamics along vertical soil profil…

Abstract. Current land surface models (LSMs) typically represent soils in a very simplistic way, assuming soil organic carbon (SOC) as a bulk, and thus impeding a correct represen…

Ensemble forecasts of air quality in eastern China – Part 2: Evaluation of the MarcoPolo–Panda prediction system, versi…

Abstract. An operational multimodel forecasting system for air quality has been developed to provide air quality services for urban areas of China. The initial forecasting system …

A new model for supraglacial hydrology evolution and drainage for the Greenland Ice Sheet (SHED v1.0)

Abstract. The Greenland Ice Sheet (GrIS) is losing mass as the climate warms through both increased meltwater runoff and ice discharge at marine-terminating sectors. At the ice sh…

Cluster-based analysis of multi-model climate ensembles

Abstract. Clustering – the automated grouping of similar data – can provide powerful and unique insight into large and complex data sets, in a fast and computationally efficient m…

Verification of the mixed layer depth in the OceanMAPS operational forecast model for Austral autumn

Abstract. The ocean mixed layer depth is an important parameter describing the exchange of fluxes between the atmosphere and ocean. In ocean modelling a key factor in the accurate…

Simulated pre-industrial climate in Bergen Climate Model (version 2): model description and large-scale circulation fea…

Abstract. The Bergen Climate Model (BCM) is a fully-coupled atmosphere-ocean-sea-ice model that provides state-of-the-art computer simulations of the Earth's past, present, and fu…

A time-dependent three-dimensional dayside magnetopause model based on quasi-elastodynamic theory

Abstract. The interaction between the solar wind and Earth's magnetosphere is a critical area of research in space weather and space physics. Accurate determination of the magneto…

Size-resolved simulations of the aerosol inorganic composition with the new hybrid dissolution solver HyDiS-1.0: descri…

Abstract. The dissolution of semi-volatile inorganic gases such as ammonia and nitric acid into the aerosol aqueous phase has an important influence on the composition, hygroscopi…

OMI NO <sub>2</sub> column densities over North American urban cities: the effe…

Abstract. Nitrogen dioxide vertical column density (NO2 VCD) measurements via satellite are compared with a fine-scale regional chemistry transport model, using a new approach tha…

A low-order coupled chemistry meteorology model for testing online and offline data assimilation schemes: L95-GRS (v1.0)

Abstract. Bocquet and Sakov (2013) introduced a low-order model based on the coupling of the chaotic Lorenz-95 (L95) model, which simulates winds along a mid-latitude circle, with…

The impact of changing the land surface scheme in ACCESS(v1.0/1.1) on the surface climatology

Abstract. The Community Atmosphere Biosphere Land Exchange (CABLE) model has been coupled to the UK Met Office Unified Model (UM) within the existing framework of the Australian C…

ICESHEET 1.0: a program to produce paleo-ice sheet reconstructions with minimal assumptions

Abstract. We describe a program that produces paleo-ice sheet reconstructions using an assumption of steady-state, perfectly plastic ice flow behaviour. It incorporates three inpu…

Evaluation of ice and snow content in the global numerical weather prediction model GME with CloudSat

Abstract. The present study evaluates the global numerical weather prediction model GME with respect to the grid-scale parameterization of frozen particles, both ice and snow, foc…

A global empirical system for probabilistic seasonal climate prediction

Abstract. Preparing for episodes with risks of anomalous weather a month to a year ahead is an important challenge for governments, non-governmental organisations, and private com…

An improved non-iterative surface layer flux scheme for atmospheric stable stratification conditions

Abstract. Parameterization of turbulent fluxes under stably stratified conditions has always been a challenge. Current surface fluxes calculation schemes either need iterations or…

Earth system modelling on system-level heterogeneous architectures: EMAC (version 2.42) on the Dynamical Exascale Entry…

Abstract. We examine an alternative approach to heterogeneous cluster-computing in the many-core era for Earth system models, using the European Centre for Medium-Range Weather Fo…

Development of a semi-parametric PAR (Photosynthetically Active Radiation) partitioning model for the United States, v…

Abstract. A semi-parametric PAR diffuse radiation model was developed using commonly measured climatic variables from 108 site-years of data from 17 AmeriFlux sites. The model has…

Constraining a land cover map with satellite-based aboveground biomass estimates over Africa

Abstract. Most land surface models can, depending on the simulation experiment, calculate the vegetation distribution and dynamics internally by making use of biogeographical prin…

An improved land biosphere module for use in the DCESS Earth system model (version 1.1) with application to the last gl…

Abstract. Interactions between the land biosphere and the atmosphere play an important role for the Earth's carbon cycle and thus should be considered in studies of global carbon …

Functional analysis of variance (ANOVA) for carbon flux estimates from remote sensing data

Abstract. The constellation of Earth-observing satellites has now produced atmospheric greenhouse gas concentration estimates covering a period of several years. Their global cove…

Prediction error growth in a more realistic atmospheric toy model with three spatiotemporal scales

Abstract. This article studies the growth of the prediction error over lead time in a schematic model of atmospheric transport. Inspired by the Lorenz (2005) system, we mimic an a…

Robustness of neural network emulations of radiative transfer parameterizations in a state-of-the-art general circulati…

Abstract. The ability of machine-learning-based (ML-based) model components to generalize to the previously unseen inputs and its impact on the stability of the models that use th…

Predicting peak daily maximum 8 h ozone and linkages to emissions and meteorology in Southern California using machine …

Abstract. The growing abundance of data is conducive to using numerical methods to relate air quality, meteorology and emissions to address which factors impact pollutant concentr…

The Simplified Chemistry-Dynamical Model (SCDM V1.0)

Abstract. Recent observational and modeling studies show that variations of stratospheric ozone and the resulting interaction between ozone and the stratospheric circulation play …

An improved representation of aerosol in the ECMWF IFS-COMPO 49R1 through the integration of EQSAM4Climv12 – a first at…

Abstract. The atmospheric composition forecasting system used to produce the Copernicus Atmosphere Monitoring Service (CAMS) forecasts of global aerosol and trace gas distribution…

Understanding changes in cloud simulations from E3SM version 1 to version 2

Abstract. This study documents clouds simulated by the Energy Exascale Earth System Model (E3SM) version 2 (E3SMv2) and attempts to understand what causes the model behavior chang…

Standardising the “Gregory method” for calculating equilibrium climate sensitivity

Abstract. The equilibrium climate sensitivity (ECS) – the equilibrium global mean temperature response to a doubling of atmospheric CO2 – is a high-profile metric for quantifying …

Improving Yasso15 soil carbon model estimates with ensemble adjustment Kalman filter state data assimilation

Abstract. Model-calculated forecasts of soil organic carbon (SOC) are important for approximating global terrestrial carbon pools and assessing their change. However, the lack of …

Chemistry Across Multiple Phases (CAMP) version 1.0: an integrated multiphase chemistry model

Abstract. A flexible treatment for gas- and aerosol-phase chemical processes has been developed for models of diverse scale, from box models up to global models. At the core of th…

A parameterization of long-continuing-current (LCC) lightning in the lightning submodel LNOX (version 3.0) of the Modul…

Abstract. Lightning flashes can produce a discharge in which a continuing electrical current flows for more than 40 ms. Such flashes are proposed to be the main precursors of ligh…

HydroBlocks-MSSUBv0.1: a multiscale approach for simulating lateral subsurface flow dynamics in Land Surface Models

Abstract. Groundwater is critical in the hydrological cycle, impacting water supply, agriculture, and climate regulation. However, current Land Surface Models (LSMs) often struggl…

Symmetric equations on the surface of a sphere as used by model GISS:IB

Abstract. Standard vector calculus formulas of Cartesian three space are projected onto the surface of a sphere. This produces symmetric equations with three nonindependent horizo…

CTDAS-Lagrange v1.0: a high-resolution data assimilation system for regional carbon dioxide observations

Abstract. We have implemented a regional carbon dioxide data assimilation system based on the CarbonTracker Data Assimilation Shell (CTDAS) and a high-resolution Lagrangian transp…

UpsFrac v1.0: an open-source software for integrating modelling and upscaling permeability for fractured porous rocks

Abstract. The efficient and accurate simulation of fluid flow and heat transport underground plays an important role in groundwater migration and geothermal resource prediction. R…

The tracer nudging method for correcting and preventing uneven tracer distributions in geodynamical models

Abstract. Tracers/markers/particles are commonly used in geodynamical models to track composition and sometimes other quantities throughout the domain. A common problem is that ov…

ISBA-MEB (SURFEX v8.1): model snow evaluation for local-scale forest sites

Abstract. Accurate modeling of the effect of snow cover on the surface energy and mass fluxes is required from land surface models. The Interactions between Soil–Biosphere–Atmosph…

Analysis of systematic biases in tropospheric hydrostatic delay models and construction of a correction model

Abstract. In the field of space geodetic techniques, such as global navigation satellite systems (GNSSs), tropospheric zenith hydrostatic delay (ZHD) is chosen as the a priori val…

eSCAPE: Regional to Global Scale Landscape Evolution Model v2.0

Abstract. The eSCAPE model is a Python-based landscape evolution model that simulates over geological time (1) the dynamics of the landscape, (2) the transport of sediment from so…

Developing spring wheat in the Noah-MP land surface model (v4.4) for growing season dynamics and responses to temperatu…

Abstract. The US Northern Great Plains and the Canadian Prairies are known as the world's breadbaskets for their large spring wheat production and exports to the world. It is esse…

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