INTRODUCTION TO DATA ASSIMILATION

January 9 - 13, 2017

This course is supported by the Doctoral school for "Earth, Planetary and Environmental Sciences" of Grenoble Alpes University. It is given in English upon request at the beginning of the session.

Summary:

Data assimilation is often presented as the art of combining various sources of information (most often, measurements and numerical models) to estimate the state of a partially observed dynamical system. In geophysics, it is now a research topic per se. It is mainly used to:
    •    define as precisely as possible a physical state (atmosphere, ocean, ...) of a system to predict its temporal evolution;
    •    optimally estimate a system state over a period of time for example, to study its variabilities;
    •    identify systematic errors in models;
    •    optimize the design of observation networks;
    •    extrapolate values of non observed variables;
    •    estimate parameters in physical laws.
The course aims at introducing the theoretical concepts and practical implementation aspects of modern data assimilation with a peculiar focus on high dimensional, non linear systems, as usually met in geosciences.

Necessary background for the course:

- Basic notions in probability and statistics (Expectation, variance, covariance matrix)
- Basic notions in linear algebra
- Basic notions in differential calculus

Program:

The following program is from previous years. Modifications (simplifications) are considered.

Part 1: Data assimilation based on estimation theory

1. Introduction to ensemble data assimilation
2. Notions in estimation theory
3. The BLUE
4. The Kalman filter
5. Ensemble Kalman filters
6. Non linear filters

Part 2: Data assimilation based on control theory

1. Introduction to variational data assimilation
2. Variational data assimilation for time-independent problems
3. The adjoint method
4. Variational Data assimilation : Practical aspect
5. Adjoint coding

Teachers:

Eric BLAYO, UGA/UFR Informatique et Mathématiques Appliquées (IMA), Laboratoire Jean Kuntzmann (LJK)

Arthur VIDARD, INRIA, LJK

Maëlle Nodet, UGA/UFRIMA, LJK

Emmanuel COSME, UGA/UFR PHITEM, Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE)



Contact:
Emmanuel.Cosme_at_univ-grenoble-alpes.fr

Online registration: via ADUM, or by e-mail  to the organizer.

Format: 14 lectures of 1:30 and 1 numerical training session (3 hours)

Dates:  January 2016, Monday 9 to Friday 13.

Charges: the course is free for students and scientists from public research institutes. Others: 400€. Expenses for accomodation, meals, and coffee breaks are not covered.

Place: campus universitaire de Saint-Martin-d'Hères. From downtown Grenoble, about 20 minutes with Tramway B. The precise location will be given later.

Schedule: here

Lecture notes and lab works files: here

How to come to UFRIMA ?

Accomodation. Here is a non-exhaustive list of hotels downtown Grenoble (Rates are indicative, and not updated every year):

Hôtel des Alpes **
45, avenue Félix viallet
38 000 - GRENOBLE
04 76 87 00 71
Fax : 04 76 47 21 25
bienvenue@hotel-des-alpes.fr
http://www.hotel-des-alpes.fr/
Simple : 57 €, double : 60 à 67 €

Hôtel Bastille **
25, avenue félix Viallet
38 000 - GRENOBLE
04 76 43 10 27
Fax : 04 76 87 52 69
hotel-bastille@wanadoo.fr
http://www.hotel-bastille.fr/
Simple : 55 €, double : 65 €

Hôtel Gloria **
12, rue Aristide-Bergès
38 000 - GRENOBLE
 04 76 46 12 93
Fax : 04 76 87 14 93
 hotelgloria@wanadoo.fr
http://www.hotel-gloria-grenoble.com/
Simple : 52 €, double : 55 à 59 €

Hôtel de l'Europe **
22, place Grenette
38 000 - GRENOBLE
04 76 46 16 94
Fax : 04 76 43 13 65
hotel.europe.gre@wanadoo.fr
http://www.hoteleurope.fr/
Simple : 45 €, double 70 €

Hôtel Touring **
26, avenue Alsace Lorraine
38 000 - GRENOBLE
04 76 46 24 32
Fax : 04 76 46 02 85
touring@wanadoo.fr
http://france-touring-hotel.com/
Chambre de 51 à 58 €

Hôtel Ibis **
5, rue Miribel
38 000 - GRENOBLE
04 76 47 48 49
Fax : 04 76 47 78 22
http://www.ibishotel.com/fr/hotel-0612-ibis-grenoble-centre/index.shtml

Hôtel de l'Institut **
10, rue barbillon
38 000 - GRENOBLE
04 76 46 36 44
Fax : 04 76 47 73 09
http://www.institut-hotel.fr/
Simple : 61 €, double 76 €

Hôtel Suisse et Bordeaux **
6, place de la gare
38 000 - GRENOBLE
04 76 47 55 87
Fax : 04 76 46 23 87
info@hotel-sb-grenoble.com
http://www.hotel-sb-grenoble.com/
Simple : 51 €, double 61 €