Dear Colleagues,

first of all I would like to thank the IVS (Axel Nothnagel
and his group, GIUB) and the ILRS (Cinzia Luceri and Roberto
Devoti, ASI) for their efforts to generate intra-technique
combined weekly solutions for the IERS CPP. These solutions
are now available at the IERS CB. Together with the IGS combined
solution from Remi Ferland (NRCan) and the DORIS solutions from
Pascal Willis (JPL) we now have "official" solutions for each of the
space geodetic techniques. The solutions are arriving in time, too,
i.e., within the two months after the observations.

It is due time now -- especially in view of the upcoming IERS
Workshop in San Francisco -- to go one step further and to
seriously start generating and delivering the weekly
inter-technique solutions. I would like to encourage the
combination centers to start this process ...
If you find any problems concerning the weekly SINEX files
available from the individual techniques, please send an e-mail
to "cpp@iers.org".

I would also like to encourage the other groups that were
answering the CfP of the IERS CPP and did not yet deliver
to start with their contributions (special products,
validation, ...). We need all the available expertise to get
this challenging combination tasks done in a thorough way ...
For instance, it would also be preferable to get a
combined solution from the IDS at some point in time. This
would help to validate the quality of the DORIS solutions.

Very soon you will get more information on the sessions
planned for the IERS Combination Pilot Project Workshop in
San Francisco this December (Dec. 9-10, 2004). Please make
sure, that you can come to San Francisco and contribute to
the meeting and the discussions.

With best regards,
                             Markus Rothacher
                             IERS Analysis Coordinator

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Prof. Dr. Markus Rothacher                   Phone : ++49-89-289-23191
Forschungseinrichtung Satellitengeodaesie    Fax   : ++49-89-289-23178
Technische Universitaet Muenchen             E-mail: markus.rothacher@bv.tum.de
Arcisstrasse 21
D-80290 Muenchen / Germany