[كتاب][B] A toolbox for digital twins: from model-based to data-driven

M Asch - 2022‏ - SIAM
A digital twin (DT) is a numerical model (in silico) of a system that runs alongside its physical
counterpart and exchanges (bidirectional) information with it. The digital twin, once suitably …

Estimation of finescale rainfall fields using broadcast TV satellite links and a 4DVAR assimilation method

F Mercier, L Barthès, C Mallet - Journal of Atmospheric and …, 2015‏ - journals.ametsoc.org
This study proposes a method based on the use of a set of commercial satellite-to-Earth
microwave links to rebuild finescale rainfall fields. Such microwave links exist all over the …

Algorithmic performance-accuracy trade-off in 3d vision applications using hypermapper

L Nardi, B Bodin, S Saeedi, E Vespa… - 2017 IEEE …, 2017‏ - ieeexplore.ieee.org
In this paper we investigate an emerging application, 3D scene understanding, likely to be
significant in the mobile space in the near future. The goal of this exploration is to reduce …

Variational assimilation of land surface temperature within the ORCHIDEE Land Surface Model Version 1.2. 6

HS Benavides Pinjosovsky, S Thiria… - Geoscientific Model …, 2017‏ - gmd.copernicus.org
The SECHIBA module of the ORCHIDEE land surface model describes the exchanges of
water and energy between the surface and the atmosphere. In the present paper, the adjoint …

Variational data assimilation with the YAO platform for hydrological forecasting

A Abbaris, H Dakhlaoui, S Thiria… - Proceedings of the …, 2014‏ - piahs.copernicus.org
In this study data assimilation based on variational assimilation was implemented with the
HBV hydrological model using the YAO platform of University Pierre and Marie Curie …

Instability of the Antarctic Ross Sea Embayment as climate warms

T Hughes, Z Zhao, R Hintz, J Fastook - Reviews of Geophysics, 2017‏ - Wiley Online Library
Abstract Collapse of the Antarctic Ice Sheet since the Last Glacial Maximum 18,000 years
ago is most pronounced in the Ross Sea Embayment, which is partly ice‐free during …

4-D-VAR assimilation of disdrometer data and radar spectral reflectivities for raindrop size distribution and vertical wind retrievals

F Mercier, A Chazottes, L Barthès… - Atmospheric …, 2016‏ - amt.copernicus.org
This paper presents a novel framework for retrieving the vertical raindrop size distribution
(DSD) and vertical wind profiles during light rain events. This is also intended as a tool to …

Parallelization of Discrete Stochastic Arithmetic on multicore architectures

F Jezequel, JL Lamotte… - 2013 10th International …, 2013‏ - ieeexplore.ieee.org
Discrete Stochastic Arithmetic (DSA) estimates round-off error propagation in a program. It is
based on a synchronous execution of several instances of the program to control using a …

YAO: a generator of parallel code for variational data assimilation applications

L Nardi, F Badran, P Fortin… - 2012 IEEE 14th …, 2012‏ - ieeexplore.ieee.org
Variational data assimilation consists in estimating control parameters of a numerical model
in order to minimize the misfit between the forecast values and the actual observations. The …

Fine-scale evaluation of rainfall from TV-sats: A new method for water monitoring and flash flood prevention

F Mercier, N Akrour, L Barthès… - URSI Radio Science …, 2017‏ - ieeexplore.ieee.org
In this paper we present a method for rebuilding rainfall maps at high resolution (500 m×
500 m, 1 min). This method is based on the assimilation of opportunistic measurements of …