---------------------------------------------------------------------------- 3. Second Announcement for the Workshop on GPS Applications of the Structure and Dynamics of the Earth's Oceans and Ionosphere: Measurement, Analysis, Instrument Calibration, and Related Technologies ---------------------------------------------------------------------------- From: "Ulf J. Lindqwister" JET PROPULSION LABORATORY 1 - 3 December 1998 MEETING PURPOSE GPS measurements are playing an increasing role in the study of the Earth's environment. Innovations in technology and analysis techniques are opening the door for significant new GPS contributions to the study of ocean dynamics and solar terrestrial interactions. The workshop seeks to enhance the exchange of information on these two fronts which are very closely related via GPS technology and applications. The structure and dynamics of the ionosphere manifests in large part the exchang e of energy between the solar-terrestrial dynamo and the Earth's upper atmosphere. This energy generates disturbances of the Earth's geomagnetic field important both to commerce and to studies of the solid Earth. Moreover, the structure and dynamics of the ionosphere is an important parameter in the measurement of ocean altimetry, a heavily relied upon tool in oceanographic studies. GPS can and does contribute to each of these areas by providing temporally and spatially continuous mapping of ionospheric structure and dynamics. GPS measurements relevant to these studies are becoming increasingly dense from the densification of ground based arrays and from upcoming launches of spaceborne GPS instruments such as Oersted, SunSat, CHAMP, SAC-C and GRACE. Finally, a new area of development, GPS surface reflection technology seeks to determine the characteristics of GPS signals reflected from the Earth's surface and received by surface, airborne or spaceborne instruments. GPS reflection technology may offer new opportunities for tomographic studies of ionosphere, and could provide the high spatial and temporal characterization of the ocean surface needed for the study of eddies and air-sea interaction among many possible other applications. In order to promote development of these specialized and important areas for GPS applications, we have initiated a series of annual workshops. The workshop provides a forum for the discussion of new techniques, existing and future missions, exchanges of data and products, and general ideas concerning the global ionosphere, single- frequency altimeter calibrations, and GPS surface reflection methods and applications. MEETING LOCATION The meeting will be held at the Embassy Suites Hotel in Arcadia, California, this year. This hotel is located within 20 minutes driving distance from JPL and has ample meeting room and banquet facilities. In addition, the hotel has set aside a block of rooms especially for conference participants. Please contact the hotel directly for room reservations: The Embassy Suites Hotel 211 East Huntington Drive Arcadia, CA 91006 (626) 445 8525 (626) 445 8548 (FAX) REGISTRATION AND ABSTRACT SUBMISSION A web page has been constructed in preparation for the workshop, see URL at http://sideshow.jpl.nasa.gov/gpsiono/idswkshop/. The initial version of the web page is nearly complete and will be operational no later than September 28, to handle on-line pre-registration and abstract submission. The web page will eventually also contain all announcements (including this one), hotel information, access paths to the Embassy Suites hotel, calender of events, and the agenda for the meeting. The current agenda is shown below. We strongly recommend that you submit your abstract early for any session of particular interest, since the number of abstracts for each session will be used to determine the final agenda. Note: please indicate your preferred session on the abstract submission form. Abstracts must be submitted on-line, via the Web page. Abstracts must be submitted no later than November 2, 1998. The pre-registration period for the workshop ends on November 2. The registration fee is $50.00 for checks received on or before November 2 and $70.00 for late registrants. Registration for the workshop may continue up to the day of the workshop, however, the late registration fee of $70.00 will apply. All registration fees are payable to: "California Institute of Technology". Please mail the registration fee to: IDS Workshop Attn. Pat McLane MS T-1200 Jet Propulsion Laboratory 4800 Oak Grove Dr. Pasadena, CA 91109 We are planning a dinner function for all participants on Wednesday evening (December 2, 1998), which will feature an invited speaker. The registration fee includes the cost of the dinner. Non-registered guests of workshop participants may also attend the dinner, but will be charged $25.00 per guest (see the Web page for further instructions). or questions or messages for the organizing committee, please contact any of the individuals listed at the end of this announcement. PRELIMINARY AGENDA December 1, 1998 Theme: GPS Surface Reflections Chair: John LaBrecque (JPL) "Science Applications" Chairs: M. Watkins (JPL) and S. Katzberg (LaRC) "GPS Reflections Data Sets and Mission Opportunities" Chairs: M. Martin-Neira (ESA) and J. Garrison (GSFC) "Physical Models and Scattering" Chairs: C. Zuffada (JPL) and V. Zavorotny (CIRES/NOAA/ETL) "Instrumentation" Chairs: S. Lowe (JPL) and P. Axelrad (University of Colorado) December 2, 1998 Theme: Ionospheric Determination and Specification for Ocean Altimetry I Chair: Ulf Lindqwister (JPL) "Oceanopgraphic Requirements and Applications" Chairs: G. Born (CCAR) and J. Blaha (NAVOCEANO) "Ionospheric Calibration: Accuracy for Ocean Altimetry" Chairs: B. Wilson (JPL) and TBD December 3, 1998 Theme: Applications of Ionospheric Determiniation and Specification Chair: Ulf Lindqwister (JPL) "Space Weather Applications" Chairs: L. Sparks (JPL) and TBD Sponsors: NASA, Code YS, Eric Lindstrom NASA, Code YSG, Clark Wilson USN, NAVOCEANO, John Blaha Organizing Committee: Ulf J. Lindqwister (Chair), John LaBrecque (Co-Chair), George Hajj, Ian Harris, Xiaoqing Pi, Larry Sparks, Mike Watkins, Brian Wilson, Larry Young, Cinzia Zuffada Points of Contact: Dr. Ulf J. Lindqwister Telephone: (818) 354 1734 MS 138-212 FAX: (818) 393 5451 Jet Propulsion Laboratory Email: ulf.lindqwister@jpl.nasa.gov 4800 Oak Grove Dr. Pasadena, CA 91109 Dr. John L. LaBrecque Telephone: (818) 354-7827 MS 233-200 FAX: (818) 393-5273 Jet Propulsion Laboratory Email: jlabrecq@pop.jpl.nasa.gov 4800 Oak Grove Drive Pasadena, CA 91109-8099 Dr. Cinzia Zuffada Telephone: (818) 354 0033 MS 238-600 FAX: (818) 393 4965 Jet Propulsion Laboratory Email: cinzia@cobra.jpl.nasa.gov 4800 Oak Grove Drive Pasadena, CA 91109-8099 Dr. Ian Harris Telephone: (818) 354-8850 MS 138-212 FAX: (818) 393 5451 Jet Propulsion Laboratory Email: ian.harris@jpl.nasa.gov 4800 Oak Grove Dr. Pasadena, CA 91109