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Dec06 Nominal Mode Chiara Piccolo University of Oxford

Detailed analysis of Dec06 mode data in middle atmosphere focusing on temperature, H2O, HNO3, NO2, O3, CH4, and N2O patterns. Explore the variations using different microwindows to understand the data intricacies.

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Dec06 Nominal Mode Chiara Piccolo University of Oxford

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  1. Dec06 Nominal Mode Chiara Piccolo University of Oxford

  2. 26-29 Dec 2006: mixed NOM and AE mode data

  3. Temperature: - Very different from IG - Stripes at S.Pole

  4. H2O: - Stripes: EQU & S.Pole - High values S.Pole above0.1 mb (possible a-priori influence)

  5. HNO3: N. Pole enhancement

  6. NO2: N. Pole mesospheric descent

  7. O3: - Equatorial double peak - N. Pole stratospheric depletion

  8. CH4: Equatorial oscillation

  9. N2O: Equatorial oscillation

  10. Summary of Dec06 Nominal Mode • Temperature: very different from IG • H2O: Stripes at EQU & S.Pole and High values S.Pole above 0.1 mb • HNO3: N. Pole enhancement • NO2: N. Pole mesospheric descent • O3: Equatorial double peak and hint of N. Pole mesospheric enhancement • CH4 and N2O: Equatorial oscillation

  11. Dec06 Middle Atmosphere Mode Chiara Piccolo University of Oxford

  12. 20-21 Dec 2006: MA mode data

  13. Applying nominal microwindows to MA mode data • Retrievals using specialised MA mode microwindows

  14. Temperature: higher values at the poles when using NOM microwindows NOM MWs MA MWs

  15. Forward and reverse pattern when using MA microwindows H2O: Stripes at EQU & S.Pole regions High values S.Pole above 0.1 mb when using NOM mws (a-priori influence), but not when using MA mws NOM MWs MA MWs

  16. HNO3: higher values when using NOM microwindows NOM MWs MA MWs

  17. NO2: higher values when using NOM microwindows in stratosphere (NGT) and more descending in N.Pole region when using MA microwindows MA MWs NOM MWs

  18. O3: no double peak anymore, depletion in stratospheric N.Pole region NOM MWs MA MWs

  19. CH4: Equatorial oscillation still present when using NOM microwindows, not when using MA microwindows NOM MWs MA MWs

  20. Equatorial oscillation present when using NOM microwindow N2O: Equatorial oscillation (on zonal means) not present NOM MWs MA MWs

  21. Summary of Dec06 MA Mode • Temperature: higher values at the poles when using NOM microwindows • H2O: High values S.Pole above 0.1 mb when using NOM microwindows, Forward and reverse pattern when using MA microwindows • HNO3 & NO2: higher values when using NOM microwindows • O3: no double peak anymore, depletion in stratospheric N.Pole region • CH4 & N2O: Equatorial oscillation still present when using NOM microwindows, not when using MA microwindows

  22. H2O microwindows: NOM H2O_0331 1223.750 1226.250 7.5 18.0 H2O_0332 1649.875 1652.875 15.0 66.0 H2O_0333 953.688 956.688 6.0 40.0 H2O_0334 1387.562 1390.500 12.0 70.0 H2O_0335 1391.750 1394.750 12.0 54.0 MA H2O_0401 1650.750 1653.750 18.0 90.0 H2O_0402 1573.188 1576.188 18.0 87.0 H2O_0403 1622.500 1625.500 18.0 0.0 H2O_0404 1576.250 1579.250 18.0 63.0 H2O_0405 1455.375 1458.375 18.0 87.0

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