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Ensemble initialization of the oceanic component of a coupled model through bred vectors at seasonal-to-interannual timescales
Ensemble initialization oceanic component
2014/12/18
We evaluate the ensemble spread at seasonal-tointerannual timescales for two perturbation techniques implemented in the ocean component of a coupled model(1) lagged initial conditions as commonly used...
Evaluating the performance of SURFEXv5 as a new land surface scheme for the ALADINcy36 and ALARO-0 models
Evaluating SURFEXv5 surface scheme
2014/12/18
The newly developed land surface scheme SURFEX (SURFace EXternalisée) is implemented into a limitedarea numerical weather prediction model running operationally in a number of countries of the ALADIN ...
A standard test case suite for two-dimensional linear transport on the sphere: results from a collection of state-of-the-art schemes
test case suite two-dimensional linear transport
2014/12/18
Recently, a standard test case suite for 2-D linear transport on the sphere was proposed to assess important aspects of accuracy in geophysical fluid dynamics with a “minimal” set of idealized m...
On the analytic approximation of bulk collision rates of non-spherical hydrometeors
Hydrometeorological microphysics parameterization rain snow the terminal settling velocity
2014/12/18
Analytic approximations of the binary collision rates of hydrometeors are derived for use in bulk microphysical parameterizations. Special attention is given to non-spherical hydrometeors like raindro...
Reallocation in modal aerosol models: impacts on predicting aerosol radiative effects
modal aerosol models predicting aerosol radiative effects
2014/12/18
Atmospheric models often represent the aerosol
particle size distribution with a modal approach, in which
particles are described with log-normal modes within predetermined size ranges.
The first pan-European kilometre-scale atmospheric chemistry simulation is introduced. The continentalscale air pollution episode of January 2009 is modelled
with the CHIMERE offline chem...
A new mixed-mode fracture criterion for large-scale lattice models
mixed-mode fracture criterion large-scale lattice models
2014/12/18
Reasonable fracture criteria are crucial for the
modeling of dynamic failure in computational lattice models.
Successful criteria exist for experiments on the micro- and
on the mesoscale, which are...
RIMBAY – a multi-approximation 3D ice-dynamics model for comprehensive applications: model description and examples
a multi-approximation comprehensive applications
2014/12/18
Glaciers and ice caps exhibit currently the largest
cryospheric contributions to sea level rise. Modelling the dynamics and mass balance of the major ice sheets is therefore
an important issue to in...
Porting marine ecosystem model spin-up using transport matrices to GPUs
Porting marine ecosystem model spin-up transport matrices GPUs
2014/12/17
We have ported an implementation of the spin-up for marine ecosystem models based on transport matrices to graphics processing units (GPUs). The original implementation was designed for distributed-me...
Assimilation of OMI NO2 retrievals into the limited-area chemistry-transport model DEHM (V2009.0) with a 3-D OI algorithm
OMI NO2 retrievals limited-area chemistry-transport model DEHM 3-D OI algorithm
2014/12/17
Data assimilation is the process of combining real-world observations with a modelled geophysical field. The increasing abundance of satellite retrievals of atmospheric trace gases makes chemical data...
Sensitivity analysis and calibration of a soil carbon model (SoilGen2) in two contrasting loess forest soils
Sensitivity analysis calibration soil carbon model two contrasting loess forest soils
2014/12/17
To accurately estimate past terrestrial carbon pools is the key to understanding the global carbon cycle and its relationship with the climate system. SoilGen2 is a useful tool to obtain aspects of so...
Global high-resolution simulations of CO2 and CH4 using a NIES transport model to produce a priori concentrations for use in satellite data retrievals
Global high-resolution simulations CO2 and CH4 NIES transport model produce a priori concentrations satellite data retrievals
2014/12/17
The Greenhouse gases Observing SATellite (GOSAT) measures column-averaged dry air mole fractions of carbon dioxide and methane (XCO2 and XCH4, respectively). Since the launch of GOSAT, model-simulated...
Towards a publicly available, map-based regional software tool to estimate unregulated daily streamflow at ungauged rivers
publicly available map-based regional software tool estimate unregulated daily streamflow ungauged rivers
2014/12/17
Streamflow information is critical for addressing any number of hydrologic problems. Often, streamflow information is needed at locations that are ungauged and, therefore, have no observations on whic...
Performance of McRAS-AC in the GEOS-5 AGCM: aerosol-cloud-microphysics, precipitation, cloud radiative effects, and circulation
McRAS-AC GEOS-5 AGCM aerosol-cloud-microphysics precipitation cloud radiative effects circulation
2014/12/17
A revised version of the Microphysics of clouds with Relaxed Arakawa-Schubert and Aerosol-Cloud interaction scheme (McRAS-AC) including, among others, a new ice nucleation parameterization, is impleme...
Using multi-model averaging to improve the reliability of catchment scale nitrogen predictions
multi-model averaging catchment scale nitrogen predictions
2014/12/17
Hydro-biogeochemical models are used to foresee the impact of mitigation measures on water quality. Usually, scenario-based studies rely on single model applications. This is done in spite of the wide...