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Showing 24601 to 24650 of 59105 works
The Met Office Unified Model Global Atmosphere 7.0/7.1 and JULES Global Land 7.0 configurations
Abstract. We describe Global Atmosphere 7.0 and Global Land 7.0 (GA7.0/GL7.0), the latest science configurations of the Met Office Unified Model (UM) and the Joint UK Land Environ…
Calibrating and validating the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) urban cooling model: c…
Abstract. Understanding the cooling service provided by vegetation in cities is important to inform urban policy and planning. However, the performance of decision-support tools e…
PyGLDA: a fine-scale python-based global land data assimilation system for integrating satellite gravity data into hydr…
Abstract. Data assimilation (DA) of time-variable satellite gravity observations, such as those from the Gravity Recovery and Climate Experiment (GRACE), GRACE Follow-On (GRACE-FO…
Independent perturbations for physics parametrization tendencies in a convection-permitting ensemble (pSPPT)
Abstract. A modification of the widely used SPPT (Stochastically Perturbed Parametrisation Tendencies) scheme is proposed and tested in a Convection-permitting – Limited Area Ense…
Numerical study of the seasonal thermal and gas regimes of the largest artificial reservoir in western Europe using the…
Abstract. The Alqueva reservoir (southeast of Portugal) is the largest artificial lake in western Europe and a strategic freshwater supply in the region. The reservoir is of scien…
DINCAE 1.0: a convolutional neural network with error estimates to reconstruct sea surface temperature satellite observ…
Abstract. A method to reconstruct missing data in sea surface temperature data using a neural network is presented. Satellite observations working in the optical and infrared band…
A fully coupled Arctic sea-ice–ocean–atmosphere model (ArcIOAM v1.0) based on C-Coupler2: model description and prelimi…
Abstract. The Arctic regional coupled sea-ice–ocean–atmosphere model (ArcIOAM) has been developed to provide reliable Arctic sea ice prediction on seasonal timescales. The descrip…
Numerical strategies for representing Richards' equation and its couplings in snowpack models
Abstract. The physical processes of heat conduction, liquid water percolation, and phase changes govern the transfer of mass and energy in snow. They are therefore at the heart of…
The emergence of the Gulf Stream and interior western boundary as key regions to constrain the future North Atlantic ca…
Abstract. In recent years, the growing number of available climate models and future scenarios has led to emergent constraints becoming a popular tool to constrain uncertain futur…
Description and evaluation of a secondary organic aerosol and new particle formation scheme within TM5-MP v1.2
Abstract. We have implemented and evaluated a secondary organic aerosol scheme within the chemistry transport model TM5-MP in this work. In earlier versions of TM5-MP the secondar…
divand-1.0: <i>n</i> -dimensional variational data analysis for ocean observati…
Abstract. A tool for multidimensional variational analysis (divand) is presented. It allows the interpolation and analysis of observations on curvilinear orthogonal grids in an ar…
A spatiotemporally separated framework for reconstructing the sources of atmospheric radionuclide releases
Abstract. Determining the source location and release rate are critical tasks when assessing the environmental consequences of atmospheric radionuclide releases, but they remain c…
Global sensitivity analysis, probabilistic calibration, and predictive assessment for the data assimilation linked ecos…
Abstract. In this paper we propose a probabilistic framework for an uncertainty quantification (UQ) study of a carbon cycle model and focus on the comparison between steady-state …
The impact of altering emission data precision on compression efficiency and accuracy of simulations of the community m…
Abstract. The Community Multiscale Air Quality (CMAQ) model has been a vital tool for air quality research and management at the United States Environmental Protection Agency (US …
RAP-Net: Region Attention Predictive Network for precipitation nowcasting
Abstract. Natural disasters caused by heavy rainfall often cause huge loss of life and property. Hence, the task of precipitation nowcasting is of great importance. To solve this …
Description and evaluation of the JULES-ES set-up for ISIMIP2b
Abstract. Global studies of climate change impacts that use future climate model projections also require projections of land surface changes. Simulated land surface performance i…
The multi-assumption architecture and testbed (MAAT v1.0): R code for generating ensembles with dynamic model structure…
Abstract. Computer models are ubiquitous tools used to represent systems across many scientific and engineering domains. For any given system, many computer models exist, each bui…
A mechanistic analysis of tropical Pacific dynamic sea level in GFDL-OM4 under OMIP-I and OMIP-II forcings
Abstract. The sea level over the tropical Pacific is a key indicator reflecting vertically integrated heat distribution over the ocean. Here, we use the Geophysical Fluid Dynamics…
The DeepMIP contribution to PMIP4: methodologies for selection, compilation and analysis of latest Paleocene and early …
Abstract. The early Eocene (56 to 48 million years ago) is inferred to have been the most recent time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Global mean te…
Improved upper-ocean thermodynamical structure modeling with combined effects of surface waves and M …
Abstract. Surface waves and internal tides have a great contribution to vertical mixing processes in the upper ocean. In this study, three mixing schemes, including non-breaking s…
Evaluation of surface shortwave downward radiation forecasts by the numerical weather prediction model AROME
Abstract. With the worldwide development of the solar energy sector, the need for reliable surface shortwave downward radiation (SWD) forecasts has significantly increased in rece…
emIAM v1.0: an emulator for integrated assessment models using marginal abatement cost curves
Abstract. We developed an emulator for integrated assessment models (emIAM) based on a marginal abatement cost (MAC) curve approach. Drawing on the output of IAMs in the Exploring…
Grid-independent high-resolution dust emissions (v1.0) for chemical transport models: application to GEOS-Chem (12.5.0)
Abstract. The nonlinear dependence of the dust saltation process on wind speed poses a challenge for models of varying resolutions. This challenge is of particular relevance for t…
Australian tidal currents – assessment of a barotropic model (COMPAS v1.3.0 rev6631) with an unstructured grid
Abstract. While the variations of tidal range are large and fairly well known across Australia (less than 1 m near Perth but more than 14 m in King Sound), the properties of the t…
Evaluation of regional climate models ALARO-0 and REMO2015 at 0.22° resolution over the CORDEX Central Asia domain
Abstract. To allow for climate impact studies on human and natural systems, high-resolution climate information is needed. Over some parts of the world plenty of regional climate …
Improving the representation of fire disturbance in dynamic vegetation models by assimilating satellite data: a case st…
Abstract. Fire provides an impulsive and stochastic pathway for carbon from the terrestrial biosphere to enter the atmosphere. Despite fire emissions being of similar magnitude to…
Fast matrix treatment of 3-D radiative transfer in vegetation canopies: SPARTACUS-Vegetation 1.1
Abstract. A fast scheme is described to compute the 3-D interaction of solar radiation with vegetation canopies. The canopy is split in the horizontal plane into one clear region …
Assessing the sensitivity of aerosol mass budget and effective radiative forcing to horizontal grid spacing in E3SMv1 u…
Abstract. Atmospheric aerosols have important impacts on air quality and the Earth–atmospheric energy balance. However, as computing power is limited, Earth system models generall…
Mechanistic representation of soil nitrogen emissions in the Community Multiscale Air Quality (CMAQ) model v 5.1
Abstract. Soils are important sources of emissions of nitrogen-containing (N-containing) gases such as nitric oxide (NO), nitrous acid (HONO), nitrous oxide (N2O), and ammonia (NH…
Failure analysis of parameter-induced simulation crashes in climate models
Abstract. Simulations using IPCC (Intergovernmental Panel on Climate Change)-class climate models are subject to fail or crash for a variety of reasons. Quantitative analysis of t…
Virtual Integration of Satellite and In-situ Observation Networks (VISION) v1.0: In-Situ Observations Simulator (ISO_si…
Abstract. This work presents the first step in the development of the VISION toolkit, a set of Python tools that allows easy, efficient, and more meaningful comparison between glo…
Assessment of bias-adjusted PM <sub>2.5</sub> air quality forecasts over the co…
Abstract. To develop fine particulate matter (PM2.5) air quality forecasts for the US, a National Air Quality Forecast Capability (NAQFC) system, which linked NOAA's North America…
The global middle-atmosphere aerosol model MAECHAM5-SAM2: comparison with satellite and in-situ observations
Abstract. In this paper we investigate results from a three-dimensional middle-atmosphere aerosol-climate model which has been developed to study the evolution of stratospheric ae…
An automatic mesh generator for coupled 1D–2D hydrodynamic models
Abstract. Two-dimensional (2D), depth-averaged shallow water equation (SWE) models are routinely used to simulate flooding in coastal areas – areas that often include vast network…
Evaluation of polar stratospheric clouds in the global chemistry–climate model SOCOLv3.1 by comparison with CALIPSO spa…
Abstract. Polar stratospheric clouds (PSCs) contribute to catalytic ozone destruction by providing surfaces for the conversion of inert chlorine species into active forms and by d…
Intraseasonal summer rainfall variability over China in the MetUM GA6 and GC2 configurations
Abstract. The simulation of intraseasonal precipitation variability over China in extended summer (May–October) is evaluated based on six climate simulations of the Met Office Uni…
A variational data assimilation system for soil–atmosphere flux estimates for the Community Land Model (CLM3.5)
Abstract. This paper presents the development and implementation of a spatio-temporal variational data assimilation system (4D-var) for the soil–vegetation–atmosphere transfer mod…
Coupling aerosol optics to the MATCH (v5.5.0) chemical transport model and the SALSA (v1) aerosol microphysics module
Abstract. A new aerosol-optics model is implemented in which realistic morphologies and mixing states are assumed, especially for black carbon particles. The model includes both e…
Computationally efficient air quality forecasting tool: implementation of STOPS v1.5 model into CMAQ v5.0.2 for a predi…
Abstract. This study suggests a new modeling framework using a hybrid Eulerian–Lagrangian-based modeling tool (the Screening Trajectory Ozone Prediction System, STOPS) for a predi…
Description and implementation of a MiXed Layer model (MXL, v1.0) for the dynamics of the atmospheric boundary layer in…
Abstract. We present a new submodel for the Modular Earth Submodel System (MESSy): the MiXed Layer (MXL) model for the diurnal dynamics of the convective boundary layer, including…
A sparse reconstruction method for the estimation of multi-resolution emission fields via atmospheric inversion
Abstract. Atmospheric inversions are frequently used to estimate fluxes of atmospheric greenhouse gases (e.g., biospheric CO2 flux fields) at Earth's surface. These inversions typ…
Optimization of model parameters and experimental designs with the Optimal Experimental Design Toolbox (v1.0) exemplifi…
Abstract. The geosciences are a highly suitable field of application for optimizing model parameters and experimental designs especially because many data are collected. In this …
A hybrid Eulerian–Lagrangian numerical scheme for solving prognostic equations in fluid dynamics
Abstract. A new hybrid Eulerian–Lagrangian numerical scheme (HEL) for solving prognostic equations in fluid dynamics is proposed. The basic idea is to use an Eulerian as well as a…
The Met Office Unified Model Global Atmosphere 4.0 and JULES Global Land 4.0 configurations
Abstract. We describe Global Atmosphere 4.0 (GA4.0) and Global Land 4.0 (GL4.0): configurations of the Met Office Unified Model and JULES (Joint UK Land Environment Simulator) com…
Partial Derivative Fitted Taylor Expansion: an efficient method for calculating gas/liquid equilibria in atmospheric ae…
Abstract. A flexible mixing rule is presented which allows the calculation of activity coefficients of organic compounds in a multi-component aqueous solution. Based on the same f…
iGen 0.1: a program for the automated generation of models and parameterisations
Abstract. Complex physical systems can often be simulated using very high resolution models but this is not always practical because of computational restrictions. In this case th…
Development of an ensemble-adjoint optimization approach to derive uncertainties in net carbon fluxes
Abstract. Accurate modelling of the carbon cycle strongly depends on the parametrization of its underlying processes. The Carbon Cycle Data Assimilation System (CCDAS) can be used…
SHIMMER (1.0): a novel mathematical model for microbial and biogeochemical dynamics in glacier forefield ecosystems
Abstract. SHIMMER (Soil biogeocHemIcal Model for Microbial Ecosystem Response) is a new numerical modelling framework designed to simulate microbial dynamics and biogeochemical cy…
SERGHEI v2.1: a Lagrangian model for passive particle transport using a two-dimensional shallow water model (SERGHEI-LP…
Abstract. This paper presents a Lagrangian model for particle transport driven by a two-dimensional (2D) shallow water model, assuming that the particles have negligible mass and …
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