Supplementary material to "Development of 3D Variational Assimilation System Based on GRAPES-CUACE Adjoint Model (GRAPES-CUACE-3D-Var V1.0) and Its Application in Emission Inversion"

Abstract. 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 semi-generator software denoted YAO was used as a framework to implement a 4D-VAR assimilation method. The objective was to deliver the adjoint model of SECHIBA (SECHIBA-YAO) obtained with YAO to provide an opportunity for scientists and end users to perform their own assimilation. SECHIBA-YAO allows the control of the eleven most influent internal parameters of SECHIBA or of the initial conditions of the soil water content by observing the land surface temperature measured in situ or as it could be observed by remote sensing as brightness temperature. The paper presents the fundamental principles of the 4D-Var assimilation, the semi-generator software YAO and some experiments showing the accuracy of the adjoint code distributed. In addition, a distributed version is available when only the land surface temperature is observed.

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A Cloud Parameters Retrieval Algorithm in the Variational Assimilation System

Proceedings of the 2nd International Conference on Computer Application and System Modeling ◽

10.2991/iccasm.2012.152 ◽

2012 ◽

Cited By ~ 1

Author(s):

Qunbo Huang ◽

Weimin Zhang ◽

Yi Yu

Keyword(s):

Retrieval Algorithm ◽

Variational Assimilation ◽

Cloud Parameters ◽

Assimilation System

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Supplementary material to "Three decades of simulated global terrestrial carbon fluxes from a data assimilation system confronted to different periods of observations"

10.5194/bg-2018-517-supplement ◽

2019 ◽

Author(s):

Karel Castro-Morales ◽

Gregor Schürmann ◽

Christoph Köstler ◽

Christian Rödenbeck ◽

Martin Heimann ◽

...

Keyword(s):

Data Assimilation ◽

Carbon Fluxes ◽

Terrestrial Carbon ◽

Supplementary Material ◽

Data Assimilation System ◽

Assimilation System

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Variational assimilation of land surface temperature within the ORCHIDEE Land Surface Model Version 1.2.6

Geoscientific Model Development ◽

10.5194/gmd-10-85-2017 ◽

2017 ◽

Vol 10 (1) ◽

pp. 85-104 ◽

Cited By ~ 2

Author(s):

Hector Simon Benavides Pinjosovsky ◽

Sylvie Thiria ◽

Catherine Ottlé ◽

Julien Brajard ◽

Fouad Badran ◽

...

Keyword(s):

Surface Temperature ◽

Land Surface Temperature ◽

Land Surface ◽

Land Surface Model ◽

Remote Sensing Data ◽

Surface Model ◽

Adjoint Model ◽

Variational Assimilation ◽

Internal Parameters ◽

Assimilation Scheme

Abstract. 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 semi-generator software called YAO was used as a framework to implement a 4D-VAR assimilation scheme of observations in SECHIBA. The objective was to deliver the adjoint model of SECHIBA (SECHIBA-YAO) obtained with YAO to provide an opportunity for scientists and end users to perform their own assimilation. SECHIBA-YAO allows the control of the 11 most influential internal parameters of the soil water content, by observing the land surface temperature or remote sensing data such as the brightness temperature. The paper presents the fundamental principles of the 4D-VAR assimilation, the semi-generator software YAO and a large number of experiments showing the accuracy of the adjoint code in different conditions (sites, PFTs, seasons). In addition, a distributed version is available in the case for which only the land surface temperature is observed.

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