Dear colleagues on the E-GVAP expert teams,

REGARDING THE JOINT MEETING OF THE E-GVAP EXPERT TEAMS
------------------------------------------------------

Place: GFZ, Potsdam, Germany.

Time: 9:00 Tuesday 6'th to 15:00 Wednesday 7'th of May, 2008

Please, find included below information about hotel booking and a draft
agenda. You are most welcome to suggest changes or addons to the
agenda.

NOTE HOTEL BOOKING DEADLINE> April 18.

Notice that E-GVAP will reimburse your travel expenses. For this to
work most smoothly it is beneficial that you follow the scheme in the
attached file. If that is for some reason not possible or highly
impractical, please contact hev@dmi.dk to agree an alternative
approach, before making arrangements yourself.

Kind regards and looking forward to seeing you,

Galina Dick, GFZ; Henrik Vedel, DMI; Jonathan Jones, UKMO.


HOTEL BOOKING AND TRANSPORTATION
--------------------------------
Special arrangement has been made at the

Mercure Hotel Potsdam (www.mercure.com/mercure/fichehotel/gb/mer/1582),

that is at a walking distance to the GFZ Potsdam (20 min).
Costs per night are 80 EUR for a single and 95 EUR
for a double room, both incl. breakfast.

Please use the key word "E-GVAP" when you arrange your booking.
Booking must be proceeded via e-mail (H1582@accor.com)
or fax +49-331-293-496.

Pre-reservation is valid until 18 April.

Directions to the GFZ and to Potsdam are given on the GFZ website at
www.gfz-potsdam.de/html/welcome/maps/index-en.html.

General tourist information is available at www.potsdam.de

If you have any special request or need assistance,
please contact Katrin Gundrum (LOC), phone +49-331-288-1102,
gundrum@gfz-potsdam.de.

(Above hotel arrangmements and travel info kindly made by Katrin Gundrum.)


DRAFT AGENDA
------------
Institute specific:

 From NWP side
 From each met institute a presentation on
    * Results of monitoring gb GNSS data agains NWP and observations.
    * Methods used and impact from use of gb GNSS data in NWP and now-casting.
    * Problems encountered of relevance to specifically use of gb GNSS data
      and to the quality of the gb GNSS data products available via E-GVAP.
    * Future plans regarding use of gb GNSS data at institute.
    * Issues that must be solved before operational use, or to improve impact.
    (not all bullets apply to all institutes)

 From geodetic/ZTD delay producing side.
 From each processing centre a presentation on
     * Processing centre setup (method, network,..)
     * Problems encountered in processing.
     * Issues


Generel:

- Supersites (Jon + ALL)

- Update/discussion of `user requirements` - the set of requirements the
meteorology side have given the GPS processing people about our
`needs`. Currently they are defined mainly in an `WMO-sense`, based on
extraction of information from other user requirements documents at
WMO. Now that use of the GPS data has started there could be need for
an update. (Henrik + ALL)

- Detailing on the type of reporting that operational USERS of the delay data
would like to see from the producers of the data (e.g. advance
notifications about changes, flagging of less secure data, ...) and
from the E-GVAP monitoring facility (e.g. messages to operators if
monitoring discover problems with certain data). (Henrik + ALL)

- Detailing of the type of reporting that the PRODUCERS of delay data would
like to see from users at met offices, and from the monitoring performed at the
E-GVAP validation site. When automatic feedback is being set up, which
types of deviations should result in feedback? (Henrik + ALL)

- Recommendations to be made on relative constraints? (Jon + ALL)

- E-GVAP data hub: Good/bad/improvements.(Jon + ALL)
- E-GVAP website: Good/bad/improvements. (Siebren + ALL)

- EUMETNET EUREF MoU related issues (e.g., met data transfer to geodetic side)
  (Henrik + Siebren + ALL)

- Report on developments in E-GVAP (Henrik)

- E-GVAP workshop. Common with COPS project? When? (Henrik + ALL)

- Time of next meeting. In connection with workshop?

- Other

NOTE>
Because this is a joint meeting the institute presentations should include
also some amount of basic information to aid the understanding by the
'other side'.