Transcript No Slide Title

IMPLEMENTATION OF THE
NEW IAG STRUCTURE
Gerhard Beutler
Astronomical Institute
University of Berne
Sidlerstrasse 5, CH - 3012 Bern
[email protected]
IAG Council
Tuesday, July 1, 2003
Hotel Royton, Sapporo
Contents
• Review of the IAG restructuring process
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Motivation
Development
Commissions and Services
Inter-commission Committees
Membership, Outreach
IGGOS
• Initial IGGOS Structure
• In particular: new chair!
• IGGOS Schedule 2003-2005
Motivation for a new IAG
• General Johann Jacob
Baeyer (1794-1885) is
the “founder” of IAG.
• He urged the establishment of the European
Arc Measurement -- for
scientific reasons!
• In 1899 the ILS was
founded by IAG!
Motivation for a new IAG
• Geodesy went through a
(r)evolution in the 2nd half
of the 20th century:
– space age & space geodesy
– age of computers
– new understanding of IAG
services (IGS, IERS)
• IAG Structure in essence
stable since 1951!
Development of New IAG
• Section II Symposium in 1998 in Munich
• IUGG General Assembly in Birmingham in
1999: Symposium “Geodesy beyond 2000”.
• K.P. Schwarz et al. ask for a restructured IAG
with a focus; The IAG Review Committee was
created with the members:
– F. Brunner, J. Dickey, M. Feissel, R. Forsberg, I.I.
Mueller, R. Rummel, F. Sanso, K.P. Schwarz
• IAG Retreat 2000 was organized, new Statutes
and ByLaws were created.
Development of new IAG
• The new IAG Statutes and Bylaws were
accepted at IAG Scientific Assembly in
Budapest (September 2001).
• New elements:
– Sections abandoned, four Commissions
– IAG Services on same level as Commissions,
represented in IAG EC
– IAG project(s)
– IAG Outreach Branch
– Inter-commission Committees, Individual
membership
The new IAG structure
• IAG Bureau (Tscherning, Beutler, Sideris)
• Commission 1: Reference Frames: Drewes,
Shum (VP)
• Commission 2: Gravity field : Jekeli
• Commission 3: Earth rotation and geodynamics: V. Dehant
• Commission 4: Positioning and Applications
Rizos, Willis (VP)
• Service reps. in IAG EC: Neilan, Rothacher,
Schuh, at large: Fortes, Merry.
The new IAG structure
• Inter-commission Committees (ICCs) shall
handle well defined, important and permanent
tasks.
• ICCs have a steering committee with President, Vice-President appointed by IAG EC
• The establishment of an ICC has to be has to
be approved by the Council (ByLaws 2.3.g)
The new IAG structure: ICCs
• ICC on Theory (ICCT):
– President Peiliang Xu
– Steering committee (to be set up)
– Broader advisory committee as interface to
other communities
– Working groups of type 1: Joint with
Commissions
– Working groups of type 2: Internal working
groups
The new IAG structure: ICCs
• ICC on Geodetic Standards (ICCGS):
– President of Planning Group: Bernhard Heck
– Mission: platform for models, procedures and
algorithms, investigates the consistency of
models & procedures, evaluates the numerical
values of constants and parameters and proposes current best estimates.
– WGs on Consistency of models and procedures
on Product Standards, Fundamental Constants
and Parameters proposed.
– Planning Group meeting this week, implement?
The new IAG structure: ICCs
• ICC on Planetary Geodesy (ICCPG):
– Presidents of Planning Group: Michael Sideris,
Véronique Déhant
– Mission: Use geodetic methods for planetary
missions (“race to Mars”) etc.
– Early planning phase
– Work is important, should continue
– Establishment in 2003 or 2005 (IAG Scientific
Assembly)?
IGGOS Motivation
• IGGOS looks for a
long-term stability of
global geodetic infrastructure.
• IGGOS is the focal
point for IAG activities of this decade.
• IGGOS is based on 3
pillars of geodesy.
IGGOS Definition
• IGGOS stands for Integrated Global Geodetic Observing System.
• IGGOS monitors the Earth system as a
whole through the IAG Services.
• IGGOS is based on the 3 pillars of geodesy
– geometry and kinematics,
– Earth orientation and rotation, and
– gravity field and its variability
IGGOS Vision
 IGGOS provides the scientific and
infrastructural basis for all geodetic
global change research.
 IGGOS integrates techniques, models,
and approaches in order to achieve
consistency, long-term reliability and
understanding of geodetic, geophysical, geodynamical and global change
processes.
Science Rationale & Plan
• IGGOS has a central theme and a master
product.
• Central Theme:
– Provide basis for Global-scale mass transfer
in the system Earth and its geodetic consequences.
• The master product is a consistent set of the
global geometric and gravimetric reference
frames.
Initial IGGOS Structure
• These general principles are observed:
– IGGOS will be based on the existing IAG
Services.
– IGGOS is not taking over tasks of the well
working IAG services.
– New IGGOS entities will be established only if
there is a stringent requirement.
Initial IGGOS Structure
• Key elements of the initial IGGOS structure:
– IGGOS Program Board as the central oversight
entity.
– Working Groups with tasks independent of those
of the IAG services.
– Science Council representing the geodetic
community.
Initial IGGOS Structure
Science Council
Participating
Organizations
IGGOS
Program Board
(Members from Participating
Organizations)
WG on Strategy
and Funding
WG on User
Integration:
 Science
 Industry
 Authorities
WG on Copyright,
Data Access Policy,
Publishing and
Certification
WG on Data,
Metadata and
IGGOS Product
Standards
WG on IAG
Services
WG on
Integration of
IGGOS in IUGG
Entities
IGGOS Schedule 2003-2005
• Proposal to Establish the Integrated Global
Geodetic Observing System (IGGOS) as
IAG’s first Project was finalized and made
available to IAG EC on January 28, 2003,
modified June 17, 2003
• The last meeting of the IGGOS Planning
Group will take place on Wednesday, July 2,
2003 in Sapporo.
Chair for IGGOS Definition Phase
• Chair of planning committee (Beutler) not
available for IGGOS definition phase.
• Prof. Chris Reigber (GFZ, Potsdam) is
proposed as new Chair.
• Qualification:
– Past chair IGS GB, Past Pres. IERS DB, CSTG,
project manager CHAMP, CO-PI GRACE.
– Retirement in 2004, available till 2005 (GFZ).
IGGOS Schedule 2003-2005
• IGGOS Definition Phase 2003-2005
– Define structure of the “final” IGGOS Project.
– Develop IGGOS Science Plan.
• Approval of IGGOS project by IAG EC at
IAG Scientific Assembly 2005.
• Start of IGGOS Project on October 1, 2005.
Decision by IAG Council
• Request approval of establishment of ICC
on Theory.
• Request approval of establishment of
IGGOS as first IAG Project.
• Approve establishment of ICC on Geodetic
Standards?
• Approve ICC on planetary geodesy for
2005 or delay decision to 2005?