CERFACS CERFACS Scientific Activity Report Jan. 2010 – Dec. 2011

3 Data assimilation for atmospheric chemistry 77
3.1 Toward operational analyses and reanalyses of European air quality . . . . . . . . . . . . 77
3.2 Toward the global assimilation of atmospheric data from new generation instruments . . . 79
3.3 Background error covariance matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
3.4 Development of linear chemistry schemes . . . . . . . . . . . . . . . . . . . . . . . . . . 82
3.5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
4 Data assimilation for hydraulics and hydrology 84
4.1 Flood forecasting improvement : data assimilation applications in hydrology for short time
scales at regional scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
4.2 Simulation and forecast of the hydraulic state of a river using data assimilation with the 1D
hydraulic model MASCARET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
4.3 Investigation for the use of data assimilation techniques to improve the modeling of the
hydrodynamics of the Berre lagoon with TELEMAC 3D . . . . . . . . . . . . . . . . . . 88
4.4 Investigate the use of satellite measurements in conjunction with in situ data to improve
water ressources studies in the framework of data assimilation in large scale hydrology . . 88
4.5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
5 Data assimilation for forest fire 90
5.1 Flame speed correction using airborne fire observations . . . . . . . . . . . . . . . . . . . 90
5.2 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
6 Data assimilation with EDF neutronic models 91
6.1 Data assimilation for field reconstruction . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
6.2 Robustness of data a assimilation respect to the number of measurements . . . . . . . . . 91
6.3 Determination of the most important instrument for nuclear core reconstruction . . . . . . 91
6.4 Optimisation of the instrument network for the nuclear core . . . . . . . . . . . . . . . . . 92
6.5 Sensitivity of the data assimilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
6.6 Parameter estimation through data assimilation . . . . . . . . . . . . . . . . . . . . . . . 92
6.7 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7 Publications 94
7.1 Conference Proceedings and Book Chapters . . . . . . . . . . . . . . . . . . . . . . . . . 94
7.2 Journal Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
7.3 Technical Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7.4 PhD Thesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
4 Coupling tools and HPC Climate Modeling 97
1 Introduction 99
2 The OASIS coupler 100
2.1 OASIS development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
2.2 OASIS3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
2.3 OASIS4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
2.4 OASIS3-MCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
2.5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
vi Jan. 2010 – Dec. 2011