The Use and Usability of Satellite Data for Tropospheric Research

Report from the 4th Workshop

 The fourth TROPOSAT workshop took place in the Charles Wilson building, University of Leicester, UK
on Thursday & Friday 29th & 30th November 2001

(* designates actions required from the named person)

1. Welcome. The workshop opened at 11.00 with a welcome by the subproject coordinator, Ulrich Platt and by Paul Monks, the local host. Some 40 principal investigators (PIs) attended; apologies had been received from 18 PIs; there was no information about a further 8 PIs. A list of those attending is attached.

2. TROPOSAT: present status. The subproject coordinator, Ulrich Platt, reported briefly on the progress which seems satisfactory. The essential thing for the near future is to produce a good annual report since this would be crucial to establishing a future for TROPOSAT.

An article about TROPOSAT had been published in the recent EUROTRAC Newsletter. All PIs should have received a copy from the ISS.

There had been a successful DOAS meeting in Heidelberg in September. A CD-ROM of the proceedings is available.

Forthcoming meetings of interest to TROPOSAT are:

a. The EUROTRAC Symposium in Garmisch-Partenkirchen from the 11th to the 15th March 2001. A TROPOSAT workshop will be held in conjunction. (*all PIs should attend and present a poster)

b. The German Physical Society in Leipzig, 18 & 19th March, 2001.

c. EGS in Nice, 21 - 26th April, 2001.

d. IGAC in Crete, September 18 -25th, 2001.

e. COSPAR in Houston, October 10 - 19th, 2001

3. Reports

a. SCIAMACHY: John Burrows (Deputy Coordinator) reported that ENVISAT had been ready since June 2001, but was awaiting the resolution of problems with the Ariane 5 launch vehicle. It is hoped to launch in March 2002. Everyone is invited to some pre-launch events in Bremen in December 2001.

b. OMI (ozone monitoring instrument): Ulrich Platt, subproject coordinator, reported that this satellite, which is a result of a Dutch - NASA collaboration is scheduled for launch in 2003. It should provide a high resolution daily ozone coverage.

c. ACECHEM: John Remedios, Leicester, described the application for a satellite to study chemistry - climate interactions that was submitted for approval in 2001. Unfortunately the application had not been successful in the first round.

d. ESA: ongoing projects related to TROPOSAT. Claus Zehner, ESA/ESRIN reported on an announcement of opportunity connected with the data user programme.

An article about TROPOSAT had been published in the ESA Bulletin. PIs wanting to have a copy should contact him.

In the coming year it would be necessary to publish an account of TROPOSAT work in the Earth Observation Quarterly. The material provided by the PIs and Task Group Leaders for the current annual report would provide a suitable basis. (*Borrell)

e. TROPOSAT. Peter Borrell, deputy coordinator reported a number of items

Actions following the last meeting

i. A letter on future of EUROTRAC had been sent to the ISS in June. (See item 3g below)

ii. The modelling for GEOSCIA had been done by Martin Dameris and Claire Granier.

iii. The suggested letter on GEOSCIA had not been sent. (See item 4 below)

iv. The Annual Report for 2000 had been published rapidly by the ISS and had been well received.

v. The Web page had been updated on several occasions. The page on data availability had attracted several enquiries. PIs are requested to provide some newer images for the web page if possible, and to let the deputy coordinator know if any further data becomes available. (Borrell)

vi. IGACO. Volker Mohnen had written to say that a recent meeting of the provisional steering group had decided to invite TROPOSAT to affiliate. The Chairman, Guy Brasseur would be writing shortly. (Borrell)

vii. COST application. There had been no progress with the possible COST application to support the co-ordination of TROPOSAT. A report would be made to the next meeting. (Borrell)

viii. The following changes in membership of TROPOSAT had taken place.

New PIs

Peter Builtjes (Sept. 2001, task group 2)

John Remedios (July 2001, task group 1)

Olaf Tuinder (Sept. 2001, task group 1,

replacing Renata de Winter-Sorkina)


Rainer Friedrich (2001, task group 2)

Winfried Winnewarter (2001, task group 2)

ix. The following new grant has been reported.

Mark Lawrence (MPI Mainz together with investigators from institutes in Crete, Ispra, Hamburg, Utrecht, Lille, and Paris.: PHOENICS, Particles of Human Origin Extinguish Natural solar Irradiance in the Climate System

f. EUROTRAC-2. Peter Borrell (on behalf of the EUROTRAC-2 ISS) reported on the project to synthesise and integrate the results of EUROTRAC-2, on the Symposium programme and on the requirements from PIs for the Symposium and the final report. (See items 2a (above) and 11a ( below)).

g. Future of EUROTRAC. Ulrich Platt, the subproject coordinator introduced a vigorous discussion on the future of EUROTRAC-2 and of TROPOSAT. The consensus was that there was a good scientific case for a new project but, whatever the outcome of EUROTRAC-2, every effort should be made to continue TROPOSAT, which is just at the beginning of what promises to be a scientifically fruitful period.

4. Geostationary satellites. The Task Group 3 leader, Paul Monks, described the conclusions of an ESA study on the application of Geostationary satellites for earth observation. There is an excellent case for a new satellite with instruments optimised to obtain tropospheric data, both to complement and to supplement the information now becoming available from low earth orbit satellite instruments such as GOME and SCIAMACHY.

Progress with GeoTROPE (formerly GEOSCIA). John Burrows (Deputy Coordinator) reported that an application for a geostationary satellite, GeoTROPE, is to be submitted in December, 2001.

Albert Goede (task group 1 PI) presented the desired specifications for measuring aerosols with GeoTROPE.

5. Task group meetings. The meeting then adjourned for an hour to enable meetings of the four task groups to take place. Particular points for discussion included:

The progress in our understanding and needs.
Progress on reference spectra, algorithms, datasets
Timetable and tasks for the final report

6. Task group 1. The leaders, Thomas Wagner and Andreas Richter, reported that

- Eleven of the 16 PIs were making presentations or had sent in reports .

- The contributions are progressing well although some are not focussed on the troposphere.

- Some useful contacts had been made through the Data Availability page on the web site.

- Some progress had been made towards quantitative products and making them available on the web.

The following presentations were then given by or on behalf of task group 1 PIs.

Albert Goede (presentation given in item 4)

Thomas Wagner (on behalf of Rodolfo Guzzi)

Otto Hasekamp (visitor)

Roland van der A (on behalf of Hennie Kelder)

Jean Vanderbout

Johannes Keller

Maarten van Loon (on behalf of Gerrit de Leeuw)

Andreas Richter

Martin Riese

M. van Roosendaal

Andreas Richter (on behalf of Gabriel Stiller)

(on behalf of Arnolds Ubelis)

Thomas Wagner

Mark Weber

Olaf Tuinder

Anton Kaifel

John Remedios

7. Task group 2. Nicole Spichtinger (PIs) reported on behalf of the leader, Martin Dameris , that progress was good. Most of the work however was concentrated on NO2.

The following presentations were then given by or on behalf of task group 2 PIs.

Maarten van Loon (on behalf of Peter Builtjes)

Andrea Weiss (on behalf of Peter Hofer)

K. Thengumthara (on behalf of Mark Lawrence)

Nicole Spichtinger (on behalf of Ulrich Platt)

(on behalf of Martin Dameris)

(on behalf of Franz Rohrer)

(on behalf of Hans Schlager)

(on behalf of Andreas Stohl)

Andrea Weiss

An apology had been received from Claire Granier who was unwell.

No information had been received from Garry Hayman

8. Task group 3. The leaders, Hermann Smit and Paul Monks, pointed out that it was difficult for the small number of active PIs to produce much on synergism themselves; they would need contributions from the rest of TROPOSAT, particularly PIs from task groups 2 and 4.

  • All TROPOSAT PIs should be encouraged to mention synergistic activities in their annual reports. (*Borrell)

The following presentations were then given by or on behalf of task group 3 PIs.

Hermann Smit

Wolfgang Junkermann (on behalf of Ralf Sussmann)

Andreas Richter (on behalf of John Burrows)

Gary Corlett (on behalf of Paul Monks)

M. van Roosendaal (on behalf of Martine De Mazière)

No information had been received from Carl Brenninkmeier, Alan Marenco (who had retired), and A.R. McKenzie

9. Task group 4. Roland van Oss introduced the session in place of Hennie Kelder who was absent.

The following presentations were then given by or on behalf of task group 4 PIs.

A.G. Straume (on behalf of Ilse Aben)

Roland van Oss (on behalf of D.W. Arlander)

          (on behalf of Hendrik Elbern)

          (on behalf of Bo Galle)

Yashka Meier (on behalf of Hennie Kelder)

Wolfgang Junkermann

No information had been received from Cornelius Blom, Alexander Meister and Rudi Zander

10. Underpinning activities

a. Specifications for future satellite instrumentation, Albert Goede: see item 4 above.

b. Data assimilation techniques. It was reported that David Lary had moved to the US and could no longer assist in this matter.

11. Future Activities

a. Annual Report 2001

b. EUROTRAC-2 Symposium, 11th - 15th March 2002 Garmisch-Partenkirchen

c. TROPOSAT workshops

The 5th workshop will be held on Wednesday 13th March 2002 in Garmisch-Partenkirchen in conjunction with the EUROTRAC-2 Symposium.

The 6th workshop will be held at the KNMI in November 2002 (subject to finding a date suitable to KNMI and TROPOSAT). (*Borrell)

The 7th and final workshop will take place at ESRIN, Frascati in March 2003.

There being no other business, the subproject coordinator, Ulrich Platt, closed the meeting at 15.00 with thanks to the principal investigators who were able to attend and to Paul Monks and his colleagues in Leicester for making the local arrangements and for their kind hospitality.

Peter Borrell, Deputy Coordinator

December 2001


*** The workshop followed a meeting of the ESA ozone profiling group, organised by Claus Zehner.

*** A meeting of the GATO group, organised by Neil Harris, took place 18.00 on Thursday 29th November after the evening adjournment of the workshop.

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