UPDATE ON THE ATMOSPHERIC DYNAMIC MISSION ADM

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UPDATE ON THE ATMOSPHERIC DYNAMIC MISSION (ADM)

• Pierre H. FLAMANT
• ADM Advisory Group
• Working Group on Space-Based Lidar Winds
• Bar Harbor, Maine, 23-25 June, 2003

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USEFUL CLARIFICATION

• Atmospheric Dynamic Mission is the 2nd Earth
  Explorer Mission selected in 1999 for a launch in
  2007
• Fully funded
• Satellite ALADIN
• Instrument ÆOLUS
• Project Manager Peter Dubock
• Instrument Manager Martin Endemann
• Most informations provided here were collected
  during the 7th ADMAG Meeting held 3-4 April, 2003
• For an update, ADM-ÆOLUS is on the WEB via ESA
  portal www.esa.int

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HOW THINGS WORK AT ESA
BOARD OF MINISTERS
ESA
Industry
ESTEC ADM Mission Managment
Advisory Group

• Advice
• Studies

• Studies
• Developments

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ALADIN ÆOLUS SATELLITE

• In 2007
• Wind Lidar using direct detection
• It is a High Spectral Resolution Lidar  the
  scattered light from molecules and particles are
  separeted by the receiver interferometer and
  processed independently i.e. two channels
• The Lidar single LOS looks at 35 from nadir and
  90 from the direction of motion to cancelled the
  huge Doppler frequency shift associated to 7 km
  sec-1 velocity
• The wind horizontal velocity will be computed
  over 50 km at maximum

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ISSUES AT BEGINNING WORRIES

• Laser transmitter ! 150 mJ per pulse Single mode
  at 355 nm, 100 Hz, Burst mode
• Two studies in parallel
• Mie Receiver Two concepts in competition i.e.
  Fizeau or Two beam MZ-M interferometer
• MZ-M Study
• Molecular lineshape Brillouin doublet

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Latest news from the Project i.e. Martin Endemann
(1/2)

• The meeting in the US is a bit too early - we
  expect nice pictures to arrive for the PDR in
  September 2003
• For the time being, we have only the pictures
  that I have showed at the previous 7th ADMAG,
  showing the overall configuration of ÆOLUS and
  the ALADIN spacecraft. It still is the most
  current design concept
• The receiving telescope is shown with a diameter
  of 1.5 m

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Latest news from the Project i.e. Martin Endemann
(2/2)

• A Laser consortium has been selected in a
  restricted competition. The Laser team is lead by
  Galileo Avionica (Pomezia and Firenze), with
  Quantel (Paris), CISE (Milano), TESAT (Stuttgart)
  and Thales Laser Diodes (Paris) as subcontractors
• The Mie receiver selected for further design
  analysis is the Mie receiver which has fewer
  engineering unknowns (i.e. Fizeau Interferometer)
  than the novel Two-beam Interferometer.

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OVERVIEW
Yellow cans 2 star trackers Golden panel
Laser radiator connected to the 2 Laser heads In
red Heat pipes from Laser packages inside the
ÆOLUS structure Grey ÆOLUS structure The
Receiver baffle is cut assy-metrically to reduce
atmospheric drag Small yellow sticks are the
com-munication antennas (to down link data
telemetry)
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LAUNCHER SIDE
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EARTH SIDE
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MISSION IMPLEMENTATION PHASE B STATUS

• Instrument Base Line Review in July 2003 Prime
  contractor Astrium UK will review ÆOLUS
• Preliminary Design Review in September 2003 ESA
  will review the status of the complete ALADIN
  satellite
• Beginning of Phase C/D in October 2003
• All ÆOLUS is broken down in a bout 50 subsystems
• Most ÆOLUS subsystems are being procured in open
  competition (ITTs)
• Most of the subcontracts must be assignated to
  contractors by July 2003
• Procurement packages need to be published on
  EMITS before

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MISSION IMPLEMENTATION MISSION STATUS

• ÆOLUS End-to-end Instrument Simulator. Kick-Off
  Oct. 2003
• Level 1B operational ground processor
  near-real-time processing chain, additional
  modules for calibration. Kick-Off Oct. 2003
• ALADIN Ground segment (responsability ESRIN)
• ALADIN Flight Operation segment (ESOC)
• ALADIN X band stations

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MISSION IMPLEMENTATION PRE-DEVELOPMENT MODEL

• Optical Bench delivered in Nov. 2002
• Detection Electronics Units in Oct. 2002
• Electrical Ground Support Equipment in Nov. 2002
• Optical Ground Support Equipment to simulate
  atmospheric returns in March 2003
• Accumulation CCDs in Dec. 2002
• Dual Fabry-Perot Rayleigh Spectro. in Feb. 2003
• Fizeau Mie Interferometer planned in April 2003
• Detection Front-End Units planned in April 2003

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MISSION IMPLEMENTATION Assessement Test Program
for Pump Laser Diodes

• Quasi CW Laser Diodes (Burst mode)
• Two contracts Thales, Dilas
• CW Laser Diodes (Seeder)
• Two contracts InnoLight, Ferdinand Braun
  Institute

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MISSION IMPLEMENTATION Laser Transmitter
Breadboard

• Two contracts in parallel with Astrium GmbH
  Galileo Avionica
• Laser breadboard to demonstrate energy level in
  UV (355 nm)
• Transportable Laser transmitter test bed to be
  integrated in the ÆOLUS PDM

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MISSION IMPLEMENTATION Airborne Demonstrator

• Astrium-DLR activity see next talk by Oliver
  Reitebuch

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SUPPORTING SCIENTIFIC STUDIES

• Measurement Error and Correlation Impact on the
  Atmospheric Dynamics Mission by KNMI
• ON GOING
• Expected benefits of DWL for Data Assimilation by
  ECMWF
• Variational data assimilation in the tropics by
  MISU
• High Impact Weather (1) by KNMI
• High Impact Weather (2) by DWD

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SUPPORTING SCIENTIFIC STUDIES

• PLANNED (in FALL 2003)
• Quality Control Methodology Tools
• Independent review of level 1B processor work
• Maintenance updating of ÆOLUS reference
  simulator
• Level 2 wind processor algorithms (i.e.
  accoun-ting for atmospheric variables
  lineshape, )
• Other level 2 data products (i.e. clouds
  aerosols layers properties)

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NOT YET (REALLY) DISCUSSED

• Data dissimination
• Post launch Validation activities
• Outreach

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MORE

• Next ADMAG mid October 2003