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Introduction
Brochure
Science:
Envisat
Data assimilation
Objectives
Links:
ASSET database
Current data
Ozone intercomparison
Partners
Publications
Calendar
Document archive 
Contacts
= ASSET members and
PAG only
 = ASSET members and
PAG; others may request access from the coordinators
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ASSET meetings, with links to presentations:
ASSET kick-off meeting, ESTEC, 13-15th Jan 2003
ASSET/SPARC workshop, Florence, 4-6th June 2003
ASSET meeting, Brussels, 1st-2nd Dec 2003
ASSET meeting, NILU, Norway, 2nd-4th June 2004
ASSET meeting, Toulouse, France, 19th-21st Jan 2005
ASSET workshop, Cologne, Germany 15th-17th June 2005
Other meetings with archived presentations:
IAMAS session B5 on data assimilation, Beijing, 10-11th Aug 2005
Forthcoming events
Past meetings are listed at the bottom
of this page.
January 2006
March 2006
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13 - 17th
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ISSI International Team: ASSET analyses intercomparison project, Bern, Switzerland
Venue: International Space Science Institute (ISSI), Bern, Switzerland (http://www.issi.unibe.ch)
Team webpage: http://www.issi.unibe.ch/teams/ASSET/
Abstract:
The ASSET (Assimilation of Envisat data; http://darc.nerc.ac.uk/asset)
project is a EU-funded consortium bringing together the leading data
assimilation (DA) groups in Europe. Its objectives are: (1) assess the
strategies for exploiting research satellite data by the Numerical Weather
Prediction (NWP) community, and (2) investigate the distribution and
variability of atmospheric chemical species by exploiting research satellite
data. To address these objectives, ASSET will assimilate Envisat
observations and produce quality-controlled analyses of ozone and other
species using a variety of assimilation models and techniques. To evaluate
these analyses and the different assimilation approaches, ASSET will carry
out an analyses intercomparison project. This proposal is for an
International Team, based on the core ASSET Principal Investigator
(PI) and Project Advisory Group (PAG) membership, to spend one week at ISSI
to discuss the results from the intercomparison project and draw
conclusions. An expected output is peer-reviewed papers that will help
address a number of key questions in the assimilation of chemical
constituents, and will contribute toward improving our understanding of
climate-chemistry feedbacks in the Earth System.
Participants:
Team: ASSET PIs: W.A. Lahoz: Team leader and ASSET co-ordinator (U. Reading,
UK); A. Geer (U. Reading, UK); D. Jackson and H. Thornton (Met Office, UK);
N. Bormann (ECMWF, UK); V.-H. Peuch and S. Massart (Météo-France and
CERFACS, France); H. Eskes and A. Segers (KNMI, The Netherlands); S. Bekki
and M. Marchand (UPMC, France); D. Fonteyn and Q. Errera (BIRA-IASB,
Belgium); H. Elbern (U. Köln, Germany); S. Ceccherini (CNR-IFAC, Italy); M.
Ridolfi (U. Bologna, Italy); T. von Clarmann (IMK, Germany); A. Vik and Y.
Orsolini (NILU, Norway); ASSET PAG members: B. Khattatov (Fusion Numerics,
USA); O. Talagrand (LMD-IPSL, France). Note that ASSET PAG members have been
appointed by the EC to evaluate and assess the ASSET project, but are not
ASSET PIs.
Donal Murtagh (Chalmers, Sweden) will attend the International Team in
his capacity as a member of the ISSI Scientific Committee.
Our understanding is that accomodation and subsistence for the team members will be
paid for by ISSI, but that travel will not be covered. Further details will follow.
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April 2006
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2nd - 7th
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EGU 2006, Vienna
The conference website is here: http://meetings.copernicus.org/egu2006/index.html. We have proposed session as part of AS (Atmospheric Sciences), AS3 (Atmospheric chemistry and aerosols) on:
Chemical data assimilation
Convenor: William Lahoz; Co-convenors: Dominique Fonteyn, Alan Geer
There is a wealth of chemical constituent and aerosol observations now available from satellites such as Aura and Envisat. One way to use this data is to assimilate it into general circulation models, chemical transport models, and coupled climate-chemistry models. Assimilation of chemical consituents helps validate models and observations, and produces quality controlled datasets. This session welcomes presentations from all working in this area, and also provides a forum to present to the wider community the results of the European Assimilation of Envisat Data (ASSET) project.
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Past events
Forthcoming events are listed at the
top of this page
Jan 2003
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15th - 17th
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ASSET/GOA/MAPSCORE workshop
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April 2003
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6th - 11th
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Joint Assembly of the European Geophysical Society (EGS), the
American Geophysical Union (AGU) and the the European Union of Geosciences
(EUG), Nice, France
Sessions of interest to ASSET members include:
AS9.01 Odin satellite: two years of atmospheric observations
Convener: Murtagh, D.
AS9.02 Chemical data assimilation
Convener: Eskes, H.; Co-Convener(s): Khattatov, B.; Lahoz, W.
AS9.03 The ENVISAT atmospheric chemistry instruments: The first year
Convener:
Stiller, G.;
Co-Convener(s):
Bovensmann, H.; Hauchecorne, A.; Baier, F.; Nett, H.; López-Puertas, M.
Further information can be found at
http://www.copernicus.org/EGS/egsga/nice03/nice03.htm
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June 2003
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30th - July 11th
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IUGG2003, XXIII General Assembly of the International Union
of Geodesy and Geophysics, Sapporo, Japan
Sessions of interest to ASSET members include:
JSM13 Data Assimilation for Atmospheric and Oceanic Processes
Speakers include Olivier Talagrand (LMD,
France), Steve Cohn (NASA DAO, USA), Ian Roulstone (Met Office, UK),
Arthur Hou (NASA DAO, USA), Krishnamurti (FSU, USA), Tom Kleespies
(NOAA/NESDIS, USA), Dominique Fonteyn (BIRA-IASB, Belgium), Henk
Eskes (KNMI, Netherlands), Hiroo Hayashi (NASA DAO, USA), Bob Schunk
(USU, USA), Boris Khattatov (NCAR, USA), Pierre De Mey (CNES, France)
and Rolf Reichle (NASA/GSFC, USA)
More details are on the IUGG web-site:
http://www.jamstec.go.jp/jamstec-e/iugg/
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August 2003
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18th - 29th
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1st Envisat Data Assimilation Summer School
A summer school aimed at postgrads and postdocs, featuring many of the ASSET team as lecturers. The school will be held at ESA-ESRIN in Frascati, Italy. Applications are due by the 30th May 2003.
Further information can be found at http://envisat.esa.int/envschool
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September 2003
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1st - 5th
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Royal Meteorological Society Conference, UEA, Norwich, UK
The Royal Meteorological Society conference includes sessions on data assimilation. More details at: http://www.rmets.org/
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28th - Oct 1st
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Roger Daley Memorial Symposium, Montréal, Canada.
The Meteorological Service of Canada is hosting a Memorial Symposium in honor of Dr Roger Daley in Montréal, Canada.
The Symposium will consist of review talks by invited speakers
on recent developments in atmospheric data assimilation and
of contributed papers (both oral and posters). Research topics include: development of assimilation systems,
modeling of error covariances, statistical diagnostics in
observation space, sensitivity analysis, Kalman filtering
and ensemble Kalman filtering, and data assimilation for
Earth system science. Space is limited to 100 attendees and the abstract deadline is July 1st 2003.
Invited Speakers (confirmed):
Nancy Baker (NRL);
Philippe Courtier (MeteoFrance);
Dick Dee (NASA Data Assimilation Office);
Ron Errico (NASA Data Assimilation Office);
Tony Hollingsworth (ECMWF);
Andrew Lorenc (MetOffice);
Richard Ménard (Meteorological Service of Canada);
Olivier Talagrand (LMD).
More information can be found at www.cmc.ec.gc.ca/rpn/daley-symposium
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October 2003
December 2003
March 2004
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11 - 13th
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COST Action 723 opening workshop, ESTEC, The Netherlands
COST Action 723 is for data exploitation and modelling of the upper troposphere and lower stratosphere. There will be 3-4 invited speakers and there is COST money available for up to 40 delegates to attend.
More information from William Lahoz (email wal@met.rdg.ac.uk) or see the COST Action 723 website: http://www.cost723.org/meetings/
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April 2004
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25 - 30th April
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EGU 1st General Assembly, Nice, France
ASSET members convened sessions including one on Chemical Data Assimilation.
More information at http://www.copernicus.org/egu2004
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May 2004
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3rd - 7th
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Envisat Atmospheric Chemistry Validation workshop ACVE-2
To be held at ESA/ESRIN, Frascati, Italy. During this
meeting, validation results of both operational ESA products and experimental
products will be discussed.
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June 2004
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1st - 8th
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Quadrennial Ozone
Symposium QOS 2004
The Quadrennial Ozone
Symposium QOS 2004, 1-8 June 2004, Kos, Greece. More information is at
http://www.qos2004.gr/.
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August 2004
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1st - 6th
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3rd SPARC General Assembly
3rd SPARC General Assembly, Victoria Conference Centre, Victoria (BC) – Canada. Themes are:
- stratospheric climate and indicators of climate change;
- stratospheric data assimilation; transport and mixing in the
stratosphere and between stratosphere and troposphere;
- gravity-wave processes and their parameterization;
- stratospheric and upper tropospheric water vapour;
- chemistry, aerosols, radiation and dynamics in the upper
troposphere/lower stratosphere; and
- chemistry-climate modelling of the stratosphere.
The conference website appears to have been closed down, but it was at: http://sparc.seos.uvic.ca/
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16th - 26th
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2nd Envisat summer school on Earth System Monitoring & Modelling
The European Space Agency (ESA) invites young researchers to join leading
experts in Earth Observation, Modelling and Data Assimilation at ESRIN
(Frascati, near Rome) for lectures, hands-on computing practicals and poster
sessions on the occasion of the 2nd ENVISAT summer school (16-26 Aug 2004) on
"Earth System Monitoring & Modelling".
More information is available at http://envisat.esa.int/envschool/
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29th - 3rd September
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4th International summer school of atmospheric and oceanic sciences
The school will be held at the University of L'Aquila, Italy, and will focus on atmospheric data assimilation.
More information can be found at: http://BobDylan.aquila.infn.it/issaos/DA/
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September 2004
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6th - 10th
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ENVISAT/ERS Symposium
The 2004 ENVISAT/ERS Symposium is to be held on 6 to 10
September 2004 in Salzburg, Austria. The symposium will be open to all interested parties, from scientists to
operational users, and will cover both ENVISAT and ERS missions. The main
objectives of the symposium are to provide a forum for investigators to present results of on-going research
project activities and to review and assess the development of applications and services using
ENVISAT and ERS data. Symposium deadlines are:
- Submission of abstracts: 26 March 2004
- Preliminary programme: 15 June 2004
A symposium website is to be created shortly.
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October 2004
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11th - 14th
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Second International Limb Workshop
The second International Limb Workshop will be held in Stockholm on October 11-14,
2004 with themes including UV/Vis limb-scattering, IR/microwave/sub-mm soundings, instrument issues,
radiative transfer, retrieval algorithms, validation and data comparison.
The workshop webpage is at http://www.misu.su.se/limb2004.html. Deadline for registration, abstract
submission, and hotel booking is September 20, 2004.
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December 2004
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6 - 8th
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SCIAMACHY Validation Workshop
A SCIAMACHY Validation Workshop will be held on 6-8
December 2004, in Bremen, and it includes the final
meeting of the German SCIAMACHY Validation Team (GSVT).
The main objective is to discuss the quality of current SCIAMACHY products. Registration by e-mail to sciavalig@knmi.nl, deadline is 15 November. A detailed programme will soon be at http://www.sciamachy-validation.org
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8 - 10th
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IMK/IAA MIPAS data user meeting
The 1st meeting of the users of IMK/IAA-generated
MIPAS data will be held at Forschungszentrum Karlsruhe
(Leopoldshafen) from 8-10 December 2004. Contact Thomas von Clarman for further details.
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January 2005
April 2005
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18 - 22nd
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Fourth WMO International Symposium: Assimilation of Observations in Meteorology and Oceanography
The Fourth WMO International Symposium on Assimilation of Observations in Meteorology and Oceanography was convened
18-22 April 2005 in Prague, Czech Republic. The Symposium website is at:
http://www.chmi.cz/dasympos/index.html
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24 - 29th
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European Geosciences Union General Assembly, Vienna, Austria
Session NP5.02, 'Data assimilation in the
presence of nonlinearities' was particularly relevant to ASSET. The conference website is at:
http://www.copernicus.org/EGU/ga/egu05/
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June 2005
August 2005
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2 - 11th
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IAMAS 2005, Beijing
Presentations are available from session B5, on data assimilation:
10th August pm:
The Future of Data Assimilation:
4D-Var or Ensemble Kalman Filter? Eugenia Kalnay
pdf
Very Short Range Forecasting of Precipitation: Comparing NWP and Extrapolation Techniques: Andrew Crook
pdf
Middle atmosphere
data assimilation:
The Canadian experience: Saroja Polavarapu
pdf
Chemical Data Assimilation: Dominque Fonteyn
pdf
The ASSET Analysis Intercomparison Project: William Lahoz
pdf
Assimilation of MIPAS Ozone profiles into the Unified Model: Carole Peubey
pdf
Stratospheric Data Assimilation at the Met Office: Richard Swinbank
pdf
11th August am:
Short Range NWP Strategy of JMA and Research Activities at MRI: Kasuo Saito
pdf
HIRLAM 4D-VAR: status and outlook: Xiaohua Yang
pdf
High-resolution Data Assimilation for NWP: Recent Activities at NCAR: Juanzhen Sun
pdf
High Resolution Data Assimilation at the Met Office: Zhihong Li
pdf
Dynamic Assimilation of Satellite-Retrieved Humidity Profiles in MM5: Xingang Fan
pdf
Impact of Model Error on Mesoscale Ensemble-Based Data Assimilation: Zhiyong Meng
pdf
Dynamic Constraints in Atmospheric and Oceanic Data assimilation: Zhijin Li
pdf
Recent Improvements to the Fast Transmittance Model, OPTRAN, for NOAA Data Assimilation: Xiaozhen Xiong
pdf
Optimal Weighting of Ensemble Members
Using a Multi-Linear Regression Method in a
Short-Range Ensemble Forecast System: Chungu Lu
pdf
11th August pm:
A new economical 4D-var without adjoint technique: B Wang
pdf
Approaches to Adjoint Variational
Data Assimilation with Physical
“on-off” Processes: Qing Zhen
pdf
A Study on 4-dimensional
Variational Assimilation of Single-
Doppler Radar Wind Data: Li Hongli
pdf
Towards Assimilation of GeostationarySatellite Imagery in 4D-Var: Dingmin Li
pdf
Data assimilation as chaos synchronization of truth and model: Gregory Duane
pdf
Application of the Local Ensemble Transform Kalman Filter on the NASA fvGCM: Hong Li
pdf
Application of ensemble Kalman filtering on a primitive-equation global model
in the presence of model errors: Takemasa Miyoshi
pdf
Posters:
Coupled model assimilation using 4D-var: T Miyama
pdf
Application of Sequential Importance Resampling (SIR)
for 1D Atmospheric Chemical Data Assimilation: S Walker
pdf
An Algorithm for Extracting Zonal Mean and Migrating Tidal Fields
in the Middle Atmosphere from Satellite Measurements:
Applications to TIMED/SABER-measured temperature and Tidal Modeling: Xun Zhu
pdf
Pictures:
Some pictures are available here
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September 2005
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12 - 14th
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Third Stratospheric Processes And
their Role in Climate (SPARC) Data Assimilation (SPARC-DA3)
workshop, Banff, Canada
The goals of the workshop are to:
- present work on and
encourage discussion of upper tropospheric, stratospheric and
mesospheric assimilation of chemical and dynamical variables
- identify issues that can be addressed by the working group
- consider the need for an intercomparison project of stratospheric
ozone analyses and, if the need is clear, to initiate this work.
The deadline for this workshop was January 3rd, 2005. More information is at http://www.atmosp.physics.utoronto.ca/SPARC/DAwebsite%20Folder/DA3_home.html.
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October 2005
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3rd - 15th
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Upper Troposphere and Lower Stratosphere School,
Cargese, Corsica (France)
This is organised by Cargese International School and COST action 723. Many ASSET members are involved. Main topics and courses are:
- Observations:
Satellite instruments, in-situ and remote measurements of water vapour and
chemical compounds, clouds in the UTLS, data evaluation.
- Data assimilation:
Theory, assimilation of satellite data, numerical weather prediction,
assimilation in global models of atmospheric chemistry
- Modelling and understanding:
Dynamics and global circulation, transport and mixing, ozone chemistry,
cirrus clouds, water budget in the UTLS, tropical dehydration
The goal of the school is to present an integrated overview of the physical,
chemical and dynamical processes in the UTLS as provided by observations,
data assimilation and modelling.
More information is at http://www.cost723.org/school.
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