Report from the First AT2 Workshop

The first AT2 workshop was held at the University of Bremen Building NW1, room W1180
on Monday & Tuesday 28th & 29th June 2004

The items are not wholly in the order in which they were discussed.

1-1.   Welcome. The project coordinator, (John Burrows) opened the meeting at 13.30 by welcoming the 48 participants (see Appendix 1 for a list). He explained briefly the history of the formation and emphasised the opportunity, offered by ACCENT, to continue and extend the excellent work begun in TROPOSAT which culminated in the publication of the ACCENT volume. It was important in the planning, which was the purpose of the workshop, to set challenging but realistic goals and so make use of the flexibility offered by the scheme of rolling funding under which ACCENT is run.

1-2.   AT2.

a.       ACCENT. The coordinator of ACCENT, Sando Fuzzi, gave a presentation on the structure and proposed functioning of the project. He too underlined the opportunities offered by the project. He expressed the hope that the ACCENT membership would soon be extended beyond the partners to Associates who would then be on an equal footing with partners in contributing to the various themes and tasks.

b.       General Aims, Organisation and Funding. John Burrows then gave a brief account of the structure proposed for AT2 which would consist of three task groups (see below) and a number of additional activities.

c.       Steering Committee.

i.        The group appointed by ACCENT for remote sensing are:

John Burrows (Coordinator), Martin Dameris, Jean-Marie Flaud, Maria Kanakidou, Gerrit de Leeuw and Ulrich Platt.

ii.       Peter Borrell will act as Executive Secretary and Deputy Coordinator.

The task group leaders, Ankie Piters and Thomas Wagner, would be invited to each meeting.

d.       Report from the first Steering Committee meeting. Peter Borrell reported on the outcome of the first meeting of the steering group, the major results are as follows.

i.        Colleagues, both from Partner and other institutions would be regarded as members only if they submitted a short description of how they propose to contribute to AT2, and also if they support AT2 by attending meetings and workshops, and by submitting the necessary reports.

ii.       It had been decided to form three scientific task groups to further the research activities of AT2(see below).

iii.      There would be several addition activities:

-        the provision of tropospheric scientific data products for atmospheric research within ACCENT including the associated protocols addressing issues such as intellectual property rights;

-        Scientific exchanges between laboratories.

-        Development of e-learning and outreach activities in this area;

-        development of a web page and contribution to the ACCENT web portal.

1-3.   Establishment of Task Groups.

Five scientific tasks had been specified for the Remote Sensing Group in Annexe 1 of the ACCENT Proposal (see Appendix 2). The steering committee had decided to form three task groups to tackle four of these and to regard the fifth as an additional activity. The task groups and leaders would be as follows.

1.       The development and improvement of algorithms for the retrieval of tropospheric data. Task Leader: Thomas Wagner.

Task Group 1 should be divided into three groups with the following leaders.

Aerosols      Gerrit de Leeuw.

Infra-red      Johannes Orphal.

UV/Visible   Andreas Richter.

2.       The synergistic use of models and observations to improve our understanding of tropospheric chemistry and dynamics (a common activity with the ACCENT Modelling task). Task Leader: Martin Dameris.

3.       The development of validation strategies for tropospheric satellite data products using existing data (a common activity with the ACCENT Quality assurance task). Task Leader: Ankie Piters.

1-4.   Task Group meetings. (These were held separately)

The workshop then broke up to hold initial meetings of the three task groups. The aims of the meetings were, a) to set specific targets for the first eighteen months of work; b) to set specific targets for the five year duration of ACCENT; c) to plan in outline a programme to achieve the eighteen month targets.

1-5.   Reports from the Task Group Meetings.

Task Group 1 (Algorithm Development). Thomas Wagner and Andreas Richter reported that there were 19 contributions. The achievable aims for the first eighteen months are as flows.

-        Improvements of algorithms.

+       first results from aerosol retrieval on SCIAMACHY data

+       retrieval of cloud properties from SCIAMACHY

Development of newer data products

+       CH4, CO, CO2 from SCIAMACHY

+       O3, NO2, HCHO, SO2, H2O, BrO from SCIAMACHY

+       Europe 2000: validated AOD at different wavelengths

+       initial global aerosol data sets from ATSR and MERIS

-        Long term data sets

+       NO2, H2O, BrO, O3 from GOME

-        Integration

+       workshop on retrieval methods in UV/vis, IR and for aerosols and possible synergies

+       small workshop on aerosol remote sensing

+       exchange of information

-        Brainstorming

+       what are realistic and possible aims for next years

+       provide list of products and descriptions

+       how to bring our products to the larger community (ACCENT, IGAC, SOLAS etc..)

Task Group 2 (Synergism). Martin Dameris reported that they had 12 presentations. The overall aims of the group would be:

-        to investigate physical, dynamical, and chemical processes in the troposphere;

-        to develop methods for using satellite data from the troposphere as part of model validation strategy;

-        to use the combination of model results, satellite observations, ground based and airborne measurements in a synergistic way to improve our knowledge about individual tropospheric processes, such as: source attribution and impact assessment of gaseous and particulate pollutants; cloud occurrence and the hydrological cycle;

-        to use model results to help bridge the gap between point measurements and the satellite view footprint for evaluating satellite retrievals.

Achievable eighteen month aims would be:

-        to evaluate of model results employing data products derived from satellites. Key molecules include NO2 tropospheric columns, ozone, CO, and water vapour;

-        to make initial studies of pollution transport mechanisms observable from space.

Task Group 3 (Validation). Ankie Piters reported that the group had had 9 presentations. Achievable aims within 18 months would be:

-        Full integration of AT2 contributions in OMI (via ESA-call or NRA) and SCIAMACHY validation.

-        Perform comparisons for AT-2 tropospheric products (TG 1): trop. NO2, trop. BrO, SO2, CO, CH4, CO2 .

-        Invite new participants (especially for TG1 products).

-        Encourage the use of NDSC data.

-        Exploitation of special events.

-        Identify retrieval issues and develop strategy (December).

1-6.   Additional Activities.

a.       Data products. The initial activity would be to update the old TROPOSAT list and put it on the web page. At a later stage Peter Borrell should form a group to extend this activity, which might be a possible common activity with ACCENT T&TP.

b.       Scientific Exchanges. Some funds are available to facilitate this.

«      PIs are invited to submit written requests for support via their task group leaders.

c.       E-learning: The steering committee would like to contribute to the objective by preparing a curriculum, material and a package on Remote Sensing from Space, at the Masters Level. The initial aim should be to formulate a curriculum. However the ACCENT e-learning coordinator, Evi Schuepbach, would like to have a small demonstration package available within a few months.

«      The following group kindly volunteered to look into the matter.

Maria Kanakidou (leader)

Rob Mackenzie

Gerrit de Leeuw

Joern Bleck-Neuhaus

Thomas Wagner

Annette Ladstätter-Weißenmeyer

It might be possible to test out the module in Bremen or in Crete.

d.       Web Page and Portal. The steering group had agreed that we should have an AT2 web page hosted at Heidelberg. Peter Borrell would liaise with Kjetil Thorsen about the relationship to the ACCENT Web Portal to achieve a relationship which was advantageous to both ACCENT and AT2.

1-7.   Strategy Document. It is intended to publish an AT2 strategy document giving details of the project, the task groups and the individual contributions from principal investigators. Most PIs had already submitted their contributions.

«      PIs were asked to submit contributions revised in the light of the task group meetings before July 19th.

«      The Task Group Leaders should submit their contributions by August 15th with a view to publication in September 2004.

1-8.   Future Activities and meetings. The following meetings are planned.

Second Workshop: Bremen, 1st to 3rd December 2004

Third Workshop: Bremen, 6th to 8th June, 2005

Fourth Workshop: ACCENT Symposium: 12th to 16th September 2005.

It is expected that the task groups will hold their own meetings either in conjunction with or prior to the workshops

1-9.   Current information on satellite instrumentation and programmes.

Claus Zehner (ESRIN): reported on current ESA projects and priorities. He emphasised the need for cooperation and pointed out that some funding opportunities are available.

Maria Kanakaidou (Uni-Crete) gave a report, on behalf of Claire Granier, on the meeting of the ACCENT modelling group.

Markus Kroon (KNMI) reported on the developments and possibilities offered by the OMI data.

Jim Drummond (Uni-Toronto) gave a presentation of the impressive results being obtained on CO distributions with data from MOPITT.

1-10.    Items raised under other business.

a.       Lillehammer Award. It was reported that the former environmental project EUROTRAC, of which TROPOSAT was a part, had been awarded the Lillehammer prize by EUREKA. Since all those in TROPOSAT had contributed to the project, all should take some pride in the achievement. The award was being used to fund prizes for young researchers. Two TROPOSAT PIs are being considered for the award in what was reported to be a strong field.

b.       Congratulations. Sandro Fuzzi, the ACCENT coordinator, offered his congratulations to the group for their enthusiasm at the initial workshop and potential contribution to ACCENT.


There being no other business, the meeting closed at 17.00 with thanks to the Coordinator for a well run workshop, and to his colleagues at Bremen for making the arrangements.

Peter Borrell

6th July 2004.


 Return to the top of the page