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Dec06 Nominal Mode Chiara Piccolo University of Oxford

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Presentation on theme: "Dec06 Nominal Mode Chiara Piccolo University of Oxford"— Presentation transcript:

1 Dec06 Nominal Mode Chiara Piccolo University of Oxford

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

3

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

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

6 HNO3: N. Pole enhancement

7 NO2: N. Pole mesospheric descent

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

9 CH4: Equatorial oscillation

10 N2O: Equatorial oscillation

11 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

12 Dec06 Middle Atmosphere Mode Chiara Piccolo University of Oxford

13 20-21 Dec 2006: MA mode data

14

15 Applying nominal microwindows to MA mode data
Retrievals using specialised MA mode microwindows

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

17 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 Forward and reverse pattern when using MA microwindows NOM MWs MA MWs

18 HNO3: higher values when using NOM microwindows
NOM MWs MA MWs

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

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

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

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

23 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

24 H2O microwindows: NOM H2O_0331 1223.750 1226.250 7.5 18.0
MA H2O_ H2O_ H2O_ H2O_ H2O_

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