Space Weather Euro News Vol.5 Issue 04 (05-04-2001) 

Table of Contents: 
1. Announcement of a High Rate GPS/GLONASS Measuring Campaign Based on 
    the International GPS Service Global Ground Station Tracking Network
2. Tenth EISCAT International Workshop,  23-27 July 2001
3. Operation Support Scientist - Cassini Mission
4. Some ESA Tender Actions from ESA EMITS
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1.Announcement of a High Rate GPS/GLONASS Measuring Campaign Based on 
   the International GPS Service Global Ground Station Tracking Network
From: Norbert Jakowski

Because the degradation of transionospheric radio signals from navigation satellites such      as GPS or GLONASS is most powerful at high solar activity, this is just the right time for coordinated GPS/GLONASS observations. As a consequence, the Ionospheric Working Group of the International GPS Service (IGS) has organized a high rate measuring campaign (HIRAC/SolarMax) using the IGS global tracking network of GPS/GLONASS receivers. Furthermore, a number of additional stations have agreed to participate. So about 150 
stations will be ready to monitor GPS and on a reduced level also GLONASS satellite signals preferably at high and low latitudes with a sampling rate of 1s during the 17th calendar week from 23 - 27 April 2001. This campaign is well-suited to study in particular the ionosphere impact of medium and small scale ionospheric phenomena on GPS signals on global scale. To achieve a comprehensive view on the structure and propagation of these irregularities, the campaign is coordinated with observation programs at the European Incoherent Scatter facility (EISCAT) and with a special observation program under the auspices of the European Science and Technology activity COST 271. Two 24 hour EISCAT observation programs are scheduled to start on 24 and 26 April at  8 UT and 9 UT, respectively Prof. Kristian Schlegel/MPAE.

Since GPS/GLONASS observations provide the total electron content (TEC) of the ionosphere, the data may be used not only for studies of the ionosphere impact on navigation signals but also for ionospheric research and modeling and may also contribute to global space weather monitoring. The campaign is open for coordination with further ground and space based observation programs all over the world. We believe that the present maximum of solar activity should be used to collect as many ionospheric data as possible during this coordinated action, even if the analysis is delayed due to limited manpower capacities. The GPS/GLONASS ground stations will provide the huge amount of data to the Crustal Dynamics Data Information System (CDDIS, where they are managed and stored by Carey Noll. Your participation, comments, suggestions are highly welcome. Please contact Norbert Jakowski/DLR or JoachimFeltens/ESOC . Hoping for interesting effects we are looking forward to working with you on this campaign. 

N. Jakowski and J. Feltens 

2. Tenth EISCAT International Workshop,  23-27 July 2001
From: Denis Alcayde 

Tenth EISCAT International Workshop
23-27 July 2001
National Institute for Polar Research, Tokyo

Session 7
Space Weather: contributions from EISCAT and Ground Based facilities

D. Alcayde 
Centre d'Etude Spatiale des Rayonnements 
Centre de Données de la Physique des Plasmas 
9, avenue du colonel Roche 
F-31028 TOULOUSE Cedex 4 - FRANCE 
Tel: +33-561-556-677 Fax: +33-561-556-701 

K. Schlegel 
Max-Planck-Institut für Aeronomie
Max-Planck-Str. 2
D-37191 Katlenburg-Lindau   -  Germany
Tel: +49-5556-979468, Fax: +49-5556-979240

Call for Papers

The various EISCAT radars (UHF,VHF,ESR) can be an important tool for ground-based space weather studies with their unique capabilities in temporal and spatial resolution, as well as spatial coverage. It has been used in the past for such related investigations and will probably play a central role also in the future (c.f. session 8). The concentration of other ground based facilities (e.g. STARE, SUPERDARN, magnetometer and riometer chains) in the area further enhance the possibilities. Ideally suited for space weather studies is a combination of one ore more of these ground based facilities and in-situ measurements from satellites inside and outside the magnetosphere (e.g. CLUSTER, SOHO, TRACE). We are calling upon space weather related investigations or planned campaigns to be presented
at the workshop.

Deadline for Abstract submissions: 30 April 2001
More information:

3. Operation Support Scientist - Cassini Mission
From: Libby Daghorn 

University College London
Mullard Space Science Laboratory
Operations support scientist - Cassini mission

Our Space Plasma Physics Group pursues research in magnetospheric physics, planetary physics and space weather. A Postdoctoral Research Assistant is required to join a small team working on the operation of the Electron Spectrometer, part of the Cassini Plasma Spectrometer, now on its way to Saturn having flown past Venus, Earth and Jupiter. The
tasks will include data analysis software and database management. The data analysis software task includes the development of algorithms to correct the electron data for spacecraft-produced photoelectrons and spacecraft potential. Candidates should have a PhD in space plasma physics or a related subject, and will ideally have some experience in the analysis of plasma data.

The post is located at the Mullard Space Science Laboratory in Holmbury St Mary, UK. Starting salary will be £18,731 and the start date is 1 June 2001, or as soon as possible thereafter, for two years in the first instance.  Further information at, contact Dr Andrew Coates. Applications, including a CV, publications
list, names and addresses of two referees and a brief description of research experience and aspirations, should be sent by 6 April 2001 to Mrs E.A. Daghorn, Mullard Space Science Laboratory, University College London, Holmbury St Mary, 
Dorking RH5 6NT, UK.

4. Some ESA Tender Actions from ESA EMITS

      (From 04/04/2001 to 21/05/2001, Act.Ref.: 01.1AE.01)

       (From 28/03/2001 to 22/05/2001, Act.Ref.: 01.127.05)

For more information and the complete List of ESA Tender Action please 
 look at: 


Note: This newsletter is an initiative of the ESA Space Systems Environment Analysis Section
and is intended to establish a prototype of a potential mailing list or
forum with news of interest for the Space Weather community in Europe.

- SWEN contact group (which keeps SWEN informed of news coming
   from other channels)is currently:

 Eamonn Daly, ESA (excluding science programme)
 Richard Marsden, ESA science programme
 Maurizio Candidi, CNR
 Paul Cannon, URSI-Commission G
 Mike Hapgood,  EGS
 Hannu Koskinen, SCOSTEP working group on Space weather
 Pierre Lantos, ISES
 Henrik Lundstedt, Lund space weather center
 Goetz Paschmann, ISSI
 Jean-Yves Prado, CNES Programme Directorate
 Michael Rycroft, ISU
 Volker Bothmer, EGS-Solar Physics Secretary
 Wolfgang Baumjohann, MPE-German Representative
 Jinbin Cao, Chinese Space Weather Activity Representative
 Barbara Poppe, NOAA Space Environment Centre

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Nadine Hoffmann