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The Canadian OSIRIS instrument on the Odin Satellite

The Canadian OSIRIS instrument on the Odin Satellite. UNIVERSITÉ YORK UNIVERSITY. Ian McDade & the Odin OSIRIS Team Department of Earth and Space Science & Engineering Centre for Research in Earth & Space Science York University.

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The Canadian OSIRIS instrument on the Odin Satellite

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  1. The Canadian OSIRIS instrument on the Odin Satellite UNIVERSITÉ YORK UNIVERSITY Ian McDade & the Odin OSIRIS Team Department of Earth and Space Science & Engineering Centre for Research in Earth & Space Science York University

  2. What is Odin?Odin is a joint Swedish/Canadian/French/Finnish small research satellite mission combining investigations in both Aeronomy& AstronomyThe Astronomystudies focus on the chemistry of the interstellar medium, comets and star formation The Aeronomy (Atmospheric Science) studies focus on the chemistry and dynamics of the Earth's stratosphere and mesosphere

  3. There are two instruments on Odin:(1) A Swedish Sub-Millimeter Radiometer (SMR)which is used for both astronomy and aeronomy(2) A Canadian Optical Spectrograph &IR Imager System (OSIRIS) which is used for atmospheric studies only

  4. The Canadian OSIRISinstrument on Odin includes a limb viewing grating spectrometer which measures the radiances of limb scattered sunlight in the wavelength range 300 - 800 nm

  5. TheOdin/OSIRISviewing geometry

  6. TheOdin/OSIRISviewing geometry

  7. The OSIRIS scattered sunlight spectra are used to obtain vertical distributions of O3, NO2, OClO & BrO, with aerosol extinction and temperature & pressure information, throughout the stratosphere and mesosphere

  8. The OSIRIS layout

  9. The OSIRIS instrument

  10. Simulated limb radiance spectra at tangent heights of 20, 40, 60 and 80 km

  11. Simulated limb radiances in more detailat tangent heights of 20 and 70 km

  12. •Odinwas successfully launched on a Russian START 1 ICBM from Svobodny, Siberia, on20th Feb, 2001

  13. •We at York are now analyzing the OSIRIS data

  14. So what are we getting from OSIRIS ?

  15. Sample scan from about 10 to 90 km in tangent height

  16. OSIRIS results: What we expected (top) and what we are getting (bottom)

  17. EP TOMS TheTOMS total ozone column densities (in Dobson units) measured over the S.H. on the same day (25th September 2002)

  18. OSIRIS OSIRIS total ozone column densities (in Dobson units) measured over the S.H. on 25th September 2002 (without tropospheric component)

  19. But OSIRIS does more than TOMS and other total ozone mappers OSIRIS also measures the vertical profile of ozone not just the total column density of ozone i.e.,OSIRIS adds an important extra dimension - height

  20. OSIRIS ozone number densities at 10 km measured over the S.H. on 25th September 2002

  21. OSIRIS ozone number densities at 15 km measured over the S.H. on 25th September 2002

  22. OSIRIS ozone number densities at 20 km measured over the S.H. on 25th September 2002

  23. OSIRIS ozone number densities at 25 km measured over the S.H. on 25th September 2002

  24. OSIRIS southern hemisphere ozone number density profiles measured on 3 orbits passing through the “ozone hole” region on 24/25 Nov 2001 The arrows indicate the highest latitude profiles (82ºS) which were measured at longitudes of ~110, 90 and 70ºE respectively (see previous slide)

  25. Some Odinfacts:•The expected mission lifetime is 2 years•The total Odin platform mass is ~235 kgthe total payload mass is ~75 kgand the OSIRIS mass is ~10 kg•The total expected mission cost over the first two years is $65 million US = 1$/second

  26. The Canadian OSIRISTeam:Ted Llewellyn, P.I.,University of SaskatchewanCo-Investigators:Jack McConnell, York UniversityBrian Solheim, York UniversityIan McDade,York UniversityWayne Evans, Trent University & York University(adjunct)Kimberly Strong, University of Toronto & York University(adjunct) UNIVERSITÉ YORK UNIVERSITY

  27. For more OSIRIS information visit http://www.osiris.yorku.ca and http://www.ssc.se/ssd/odin

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