EUMET/SRNWP Workshop on

High resolution data assimilation

with emphasis on the use of moisture-related observations

(21 – 23 March 2007 , Norrköping, Sweden)

Summary Report from the Workshop

Workshop Programme and Presentations

Wednesday 21 March 2007


10:00– 10:30 Welcome and practical arrangements

Göran Ryne, Deputy Director General of SMHI

Jean Quiby, Coordinator of the SRNWP

Per Undén: Practical details about the workshop

Session 1: Experiences from operational data assimilation at 10 km grid resolution

10:30– 11:00 Yuki Honda (Keynote talk):

Current and Future Status of the operational mesoscale variational data assimilation system at JMA

11:00– 11:20 Sue Ballard:

Progress towards “convective scale” data assimilation at the Met Office

11:20– 11:40 Claude Fischer:

Lessons and ongoing developments for the 10 km resolution Aladin 3D-VAR assimilation

11:40– 12:00 Loik Berre:

Modeling of flow dependent background error covariances based on a nearly real time assimilation ensemble

12:00 – 13:00 Lunch

13:00– 13:20 Magnus Lindskog:

Background errors in the HIRLAM variational assimilation system

13:20– 13:40 Nils Gustafsson:

Towards operational implementation of HIRLAM 4D-Var

13:40– 14:00 Xiaohua Yang:

Large scale blending in HIRLAM data assimilation

Session 2: Data assimilation techniques for models at 1-4 km resolution

14:00– 14:30 Dale Barker (Keynote talk):

Overview of Results From US Convective-Scale Variational and Ensemble Data Assimilation Efforts

14:30 – 15:00 Coffee

15:00– 15:20 Pierre Bousseau:

A prototype convective-scale data assimilation system for operations: the Arome-RUC

15:20– 15:40 Genevieve Jaubert:

Real case assimilation at 2 km range: impact on the forecast of the assimilation tuning

15:40– 16:00 Zhihong Li:

Development of data assimilation for a convective scale version of the Unified Model

16:00– 16:20 Mark Dixon:

The use of nudging and variational assimilation in convective-scale versions of the Unified Model


Thursday 22 March

Session 3 : Moist physics and moist balances for high resolution data assimilation

09:00– 09:30 Elias Holm (Keynote talk):

Moisture control and balance in data assimilation

09:30– 09:50 Richard Renshaw:

Assimilation of Cloud Fraction in Var at the Met Office

09:50– 10:10 Christoph Schraff:

Revised Latent Heat Nudging in a Convective-Scale Model

10:10– 10:30 Allen Zhao:

A High-Resolution Data Assimilation System at NRL: Progresses and Challenges

10:30– 11:00 Coffee

Poster Session

11:00– 12:30 Plenary presentations ( 5 min each)

Simona Stefanescu:

Ensemble derived flow dependent background standard deviations

Roger Randriamampianina:

Recent development and changes in the operational ALADIN/HU 3D-Var system

Bogumil Jakubiak:

Problems with sampling errors in ensemble data assimilation

Andreas Grantinger:

Ensemble Kalman filters in meso-scale numerical weather prediction

Per Dahlgren:

Single obs experiments with AMSU-B using different structure functions

Reima Eresma:

Local asymmetry in ground-based GPS slant delay data

Kirsti Salonen:

Bias estimation of doppler radar radial winds

Andrea Storto:

Preliminary study for assimilating binary cloud cover data from AVHRRradiometers

Bjarne Amstrup:

EUCOS space/terrestrial OSE study using the DMI-HIRLAM 3D-Var data assimilation system.

Fatima Karbou:

Recent Developments in The Use of Satellite Microwave Observations Over Land at Météo-France

Henrik Vedel:

Impact from ground-based GPS observations in the TOUGH project and Development of an operational observing system for NRT GPS ZTD and IWV.

Ki-Hoom Kim:

An Overview of the KEOP-2006 IOP (Horea Enhanced Observing Program in 2006) and some Highlights

12:30 – 13:30 Lunch

Session 4 Practical experience from assimilation of moisture-related satellite and radar data

13:30– 14:00 Sue Ballard (Keynote talk):

The future use of remote sensing data in Met Office high resolution models

14:00– 14:20 Nicolas Gaussiat:

Comparisons of radar reflectivities with synthesised observations from Met-Office 4 km Unified Model output

14:20– 14:40 Thibaut Montmerle:

Regional scale assimilation of radar data at Météo-France

14:40– 15:00 Martin Stengel:

Assimilation of SEVIRI Infra-Red Radiances into a Meso-Scale NWP Model

15:00 – 15:30 Identification of tasks for the Working Groups

15:30 – 16:00 Coffee

16:00 – 18:00 Working groups (4 groups to meet in: (1) the plenary room, (2) the Fogelsta room (2nd floor), (3) the cafeteria (2nd floor) and (4) in the basement (1st floor)

18:00 – 19:00 Refreshments and looking at exhibitions

19:00 – 22:00 Workshop dinner


Friday 23 March

08:30 – 10:30 Working groups (rooms above) and coffee

10:30 – 12:00 Plenary presentation and discussion of conclusions and recommendations from the working groups


Workshop Announcement

Participants lists