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Radio Aeronomy at Onsala Space Observatory

Radio Aeronomy at Onsala Space Observatory. Peter Forkman forkman@oso.chalmers.se. Infrared OH-airglow instrument. O 3 + H  2OH*. H 2 O at 22.2 GHz. CO at 115.27 GHz. Pressure broadening. Sky switched H 2 O at 22 GHz. Frequency switched CO at 115 GHz. CO receiver.

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Radio Aeronomy at Onsala Space Observatory

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  1. Radio Aeronomy at Onsala Space Observatory Peter Forkman forkman@oso.chalmers.se

  2. Infrared OH-airglow instrument

  3. O3 + H  2OH*

  4. H2O at 22.2 GHz

  5. CO at 115.27 GHz

  6. Pressure broadening Sky switched H2O at 22 GHz Frequency switched CO at 115 GHz

  7. CO receiver

  8. Frequency switched CO spectra

  9. ISAMS on UARS was measuring CO

  10. CO from ISAMS @UARS

  11. WACCM Model Description • The Whole Atmosphere Community Climate Model (WACCM) is a General Circulation Model (GCM) developed at NCAR using components from three well-validated atmospheric models • The dynamics core model is taken from the NCAR Middle Atmosphere Community Climate Model, MACCM • The chemistry and related processes are taken from the Model for OZone And Related chemical Tracers, MOZART • Additional chemical and physical processes needed to represent the mesosphere and thermosphere are taken from the Thermosphere Ionosphere Mesosphere Electrodynamics (TIME)-GCM • A major advantage of the model for studies of the middle atmosphere is that the upper boundary is located in the lower thermosphere, thus removing the possibility of spurious reflection of planetary waves, and allowing explicit representation of mesospheric processes

  12. CO distribution from WACCM

  13. CO columns

  14. CO profiles, OSO (upper) WACCM (lower)

  15. Models still underpredict mesospheric CO!

  16. H2O at 22.2 GHz

  17. H2O receiver

  18. 21/31.4 GHz radiometer

  19. Elevation and tropospheric opacity change at 22 GHz

  20. Middle Atmospheric Water Vapour Radiometer - MIAWARA

  21. Averaged H2O spectrum July 2001

  22. Averaged H2O spectrum July 2001

  23. Baseline ripple at 22 GHz

  24. HALOE on UARS measures H2O

  25. H2O from OSO, HALOE (UARS)

  26. How do we explain the dubble peak in H2O?

  27. OH temp and CO

  28. Radio Aeronomy at Onsala Space Observatory Peter Forkman forkman@oso.chalmers.se

  29. ODIN measures H2O

  30. OSO-ODEN Mars 2002

  31. Robust H2O receiver?

  32. Small Radio Telescope

  33. Mapping the galaxy

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