1 / 85

Odin’s atmospheric mission

Odin’s atmospheric mission. The Atmosphere from Space. Odin Aeronomy Goals. Stratospheric Ozone science Catalytic destruction of ozone by Cl and Br Ozone loss outside of polar regions Mesospheric ozone Science Unravelling the chemistry of Odd- Hydrogen. Summer mesopause studies

aiden
Download Presentation

Odin’s atmospheric mission

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Odin’s atmospheric mission

  2. The Atmosphere from Space

  3. Odin Aeronomy Goals • Stratospheric Ozone science • Catalytic destruction of ozone by Cl and Br • Ozone loss outside of polar regions • Mesospheric ozone Science • Unravelling the chemistry of Odd-Hydrogen. • Summer mesopause studies • Are NLC a harbinger of climate change? • Dynamical processes • Transport between different atmospheric regions

  4. Odin • Launched 20 Feb 2001 • Joint Astronomy/Aeronomy mission • Carries two instruments • SMR • OSIRIS • Sun synchronous orbit 18:00 hour ascending node

  5. Atmosfärens struktur 120 Termosfären 100 80 Mesosfären Höjd (km) 60 40 Stratosfären 20 Troposfären 0 -100 -50 0 50 100 150 Temperatur (C)

  6. Atmospheric processes

  7. Processes of importance in Aeronomy • The interaction of radiation with atmospheric constitutents. • Chemical processes • Dynamical processes and the interaction between • large scale dynamics (General circulation) • small scale dynamics (Waves)

  8. Atmospheric circulation

  9. Tropical Tracer Comparison

  10. Ozon karta

  11. Normal Ozone Chemistry Disturbed Ozone Chemistry Ozone Chemistry

  12. H O 2 HNO 3 H SO 4 2 cool to cool to ~195K ~188K H O H O 2 2 H SO Aerosol Type I PSC Type II PSC Sedimentation 2 4 nucleation and growth Formation Formation DenitrificationDehydration CH n h 4 n h HNO 3 O H O Cl Cooling 2ClO +2O 2 2 3 2 ClONO HCl 2 s C F NO ClONO 2 2 C Cl O 2 2 Incorporation n Repartioning of h Catalytic cycle of Formation of of HCl and HNO 3 reservoir species reservoir species Ozone depletion into type-I particles Processes i ozone loss Microphysical processes Chemical processes HCl 2Cl Cl From Troposphere Photo dissociation

  13. The Radiometer SMR • Four sub-mm Channels 486 – 580 GHz • One mm-waves channel 118.7 GHz • Three Spectrometers • One Acousto-optical Spectrometer • Two Autocorrelator Spectrometers • One three channel filterbank

  14. OSIRIS (Optical Spectrograph and Infra Red Imaging System) • Spectrometer • 280-800 nm • 1 nm resolution • IR Imager • 3 channels • 2 @ 1.27 mm • 1 @ 1.53 mm • 10 nm bandwidth

  15. Odin limb scanning Solen Först

  16. Odin limb scanning Solen

  17. Odin limb scanning Solen

  18. Odin limb scanning Solen

  19. Odin limb scanning Solen

  20. Odin limb scanning Solen

  21. Odin limb scanning Solen

  22. Odin limb scanning Solen

  23. Odin limb scanning Solen Sist

  24. Frequency coverage and species

  25. Frequency coverage and species

  26. Frequency coverage and species

  27. Frequency coverage and species

  28. Odin measurement modes • Basic Stratospheric mode • SMR: O3, N2O, HNO3, ClO, (H2O) • OSIRIS O3, NO2, (OClO, BrO), aerosols • Scan range 7-70 km • Other SMR modes • SMR: H2O, CO (upper strat), NO, HDO, H2O2, HO2, • Scan range 7-100 km or 50-100 km

  29. Division of time with Astronomy • 50 – 50 principle • Basic stratospheric mode every 3rd day • Extra day for other modes every 3rd basic day • Special programmes for validation campaigns and geophysically interesting periods

  30. Aeronomy /Astronomy Carpet

  31. Version 1.4 Spectra Jan 2002

  32. Corresponding profiles Jan 2002

  33. 501GHz region

  34. Corresponding Profiles

  35. Entire Orbit Ozone

  36. ClO whole orbit

  37. N2O 2001-11-06

  38. ClO observations/model June 2002

  39. Limb Brightness as a function of Tangent altitude

  40. OSIRIS spectra

  41. A comparison of the OSIRIS retrieved and Sonde measured ozone profile over Spitzbergen

  42. Spectral regions for DOAS

  43. Specifications on the retrieval process for O3 and NO2 is seen below: O3-window NO2-window : 571-617 nm 435-451 nm Species: O3, NO2, O4 O3, NO2, O4 Corrections: I0, Polarization I0, Tilt, T-dep, -shift Ref. height: 50 km 50 km Alt range: ~10-40 km ~15-35 km

  44. Typical Fits

  45. Orbit 212d 2002-09-25 map

More Related