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UPDATE ON THE ATMOSPHERIC DYNAMIC MISSION (ADM)

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. USEFUL CLARIFICATION. Atmospheric Dynamic Mission is the 2nd Earth Explorer Mission selected in 1999 for a launch in 2007

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UPDATE ON THE ATMOSPHERIC DYNAMIC MISSION (ADM)

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  1. 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

  2. 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

  3. HOW THINGS WORK AT ESA BOARD OF MINISTERS ESA Industry ESTEC ADM Mission Managment Advisory Group • Advice • Studies • Studies • Developments

  4. 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

  5. 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

  6. 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

  7. 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.

  8. 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)

  9. LAUNCHER SIDE

  10. EARTH SIDE

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. MISSION IMPLEMENTATION : Airborne Demonstrator • Astrium-DLR activity : see next talk by Oliver Reitebuch

  17. 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

  18. 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)

  19. NOT YET (REALLY) DISCUSSED • Data dissimination • Post launch Validation activities • Outreach • …

  20. MORE … • Next ADMAG mid October 2003

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