All times may be adjusted slightly after the start of the workshop.
Tutorials and Evening Talks (except Mon. evening) are to be 44 min presentations (excluding question and discussion time following)
All other talks are to be 22 minute presentations (excluding question and discussion time following)
All mid session breaks are 15 min
All presentation times will be strictly enforced with a timing device, but question and discussion times will be extended at the session chair person's discretion.
Changes in meal times have to be negotiated with the conference center.
Sunday 21 April
15:00 registration open
18:00 Dinner
Monday 22 April
07:30 Coffee
08:15 Breakfast
09:00 Welcoming remarks
09:15 Session 1: Development of Adjoint Models
Chair: Martin Ehrendorfer
Tutorial 1: Ron Errico
The problem of developing adjoints of model physics
#9 Stephane Laroche
On the linearization of a simplified
planetary boundary layer parameterization
#7 Marta Janiskova
Continuous development and validation of adjoint model
with physical processes at ECMWF
11:00 Break
#14 Amos Lawless
The use of a non-tangent linear model
for incremental 4D-Var
#10 Dacian N. Daescu
Adjoint modeling for chemical reactions mechanisms:
discrete versus continuous
12:30 Lunch
14:00 Session 2: Sensitivity Analysis
Chair: Carolyn Reynolds
#36 Adrian Sandu
Automatic generation of efficient adjoints
for chemical kinetic systems
#35 Michael Morgan
A PV and wave activity diagnosis of singular vector and
adjoint sensitivity structure and evolution
#18 John Lewis
Gulf of Mexico moisture flux in return flow:
Sensitivity via Adjoint Method:
Unexpected results and unresolved questions
#3 Gregg Jacobs
Adjoint Analyses of Dynamics and Data Influence
across the Continental Shelf
15:45 Break
#15 Carla Cardinali
Analysis sensitivity with respect to the observations
#39 Nancy Baker
The Application of Observation Adjoint Sensitivity
to Satellite Assimilation Problems
17:45 Dinner
19:00 Evening Oral Presentation Session
Chair: John Derber
#33 Thomas Kaminski
First applications of FastOpt's new AD tool TAF
#32 Ralf Giering
Generating the tangent linear and adjoint models of
the NASA/NCAR climate model's dynamical core by means of TAF
20:00 Close of the day
Tuesday 23 April
07:30 Coffee
08:30 Breakfast
09:15 Session 3: Singular Vectors
Chair: Bill Bourke
Tutorial 2: Martin Ehrendorfer
Predictability of Atmospheric Motions: Evidence and Questions
#37 Carolyn Reynolds
Tangent linear and nonlinear growth of optimal perturbations.
#23 Tom Rosmond
Spatially correlated random perturbations for use in ensembles
11:00 Break
#8 Kevin Raeder
SVs using moisture-measuring norms
#11 Jan Barkmeijer
Forcing singular vectors and other sensitive model perturbations
12:30 Lunch
14:00 Session 4: Climate Applications (and SVs continued)
Chair: Ron Gelaro
#42 Bill Bourke
Development and Implementation of an Ensemble Prediction System
at the Bureau of Meteorology
Tutorial 3: Andy Moore
Using Adjoint Models to Explore Stochastically-Induced
Variations in Climate
#6 Jim Hansen
Can adjoint models be used to help quantify
the uncertainty associated with recent climate change?
15:45 Break
16:00 Poster Session (during extended break)
#1 Christine Johnson
Four-dimensional variational data assimilation
in the presence of rapidly growing synoptic scale features
#16 Gerald Desroziers
Introduction of a potential vorticity operator
in the French Arpege 4D-Var
#19 Saroja Polavarapu
Data assimilation with the Canadian middle atmosphere
climate model
#25 Tim Payne
Aspects of the Met Office 4D-Var
#27 Mike Fisher
Global, Non-Homogeneous Non-Separable Background
Covariance Model Based on a Non-Orthogonal Wavelet Expansion
#38 Philippe Rogel
A global ocean variational assimilation system
using the PALM assimilation coupler
#40 Qingnong Xiao
Initial Results From The WRF Data Assimilation System
#41 Patrick Haas
Estimation of dynamical backgrounds: Theoretical aspects
17:45 Dinner
19:00 Evening Talk 2: Ron Gelaro
SV Applications and Applicability:
Fact, Fiction and Unresolved Issues
Chair: John Derber
20:00 Close of the day
Wednesday 24 April
07:30 Coffee
08:15 Breakfast
09:00 Session 5: Balance Issues
Chair: Monique Tanguay
Tutorial 4: Saroja Polavarapu
Balance considerations in data assimilation
#13 Steve Fletcher
Variational methods and imposing balance
via strong constraints
#22 Ian Roulstone
Diagnosing vertical motion using hamiltonian methods
with constraints
10:45 Break
#28 Nancy Nichols
The use of potential vorticity to achieve balanced analyses
in variational assimilation systems
#29 Anthony Weaver
Modelling correlation functions using a generalized
diffusion equation with implicit time-discretization
12:15 Lunch
open afternoon
17:45 Dinner
19:00 Evening Talk 3: Edward Lorenz
Implications of Chaos for the Atmosphere and NWP
Chair: John Derber
20:00 Close of the day
Thursday 25 April
07:30 Coffee
08:30 Breakfast
09:15 Session 6: Data Assimilation I
Chair: Erik Anderson
Tutorial 5: Mike Fisher
Construction of Background Error Covariance Matrices
for Variational Data Assimilation
#26 Martin Leutbecher
A reduced rank estimate of forecast error changes
due to intermittent modifications of the observing network
#34 Alexander Beck
Reduced rank Kalman filtering in a
quasigeostrophic assimilation system
11:00 Break
#24 Yannick Tremolet
Diagnostics of linear and incremental approximations in 4DVAR
#5 Bernard Chapnik
Tuning and monitoring of observation error statistics
in a variational assimilation
12:30 Lunch
14:00 Session 7: Reports from Operational Centers
Chair: Andrew Lorenc
#31 John Derber
Recent progress in data assimilation at NCEP
#43 Peter Steinlei
3d Variational assimilation at BMRC
#12 Monique Tanguay
Current status of the pre-operational 4D-VAR assimilation system
of the meteorological service of Canada
#17 James Beck
Issues arising in development of the linear and adjoint models
for use in 4D-Var with a semi-lagrangian, semi-implicit,
non-hydrostatic model
15:45 Break
#21 Liang Xu
Development and Testing of NAVDAS-AR
#44 Ricardo Todling
Studies with the DAO Retrospective Analysis System
17:45 Dinner
19:00 Evening Talk 4: Andrew Lorenc
Future directions of data assimilation R&D
Chair: John Derber
20:00 Close of the day
Friday 26 April
07:30 Coffee
08:15 Breakfast
09:00 Session 8: Data Assimilation II
Chair: Jan Barkmeier
Tutorial 6: Erik Anderson
Applications of Hessians.
#20 Bartosz Protas
Formulation Issues in Adjoint-Based Data Assimilation
#4 Tom Bewley
Extension of the complex-step derivative method
to pseudospectral codes
10:45 Break
#2 Zhao-Xia Pu
Mesoscale Assimilation of TRMM Data with 4DVAR:
Preliminary Results
#45 Luc Fillion
Examination of the sensitivity of the Kain-Fritsch
moist convective parameterization scheme
12:15 Lunch
End of workshop