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Interannual

Par Webmaster Legos Dernière modification 20/03/2012 18:00

Solomon Sea: Interannual variability

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1/12° regional model by A. Melet
time period: 1986-2006

The low pass filter for the data has a half power at 18 months

1._Sea_Level_Anomalies
2._Frequency_analysis
3._EKE_averaged_over_the_Solomon_Sea
4._South_boundary
5._Solomon_strait
6._Vitiaz_strait
7._ENSO_composites
8._Transport_in_the_different_straits
9._DRAKKAR_G70_14°



1. Sea Level Anomalies (low pass filtered data)

a. S18.gif; aviso.gif
b. averaged over the Solomon Sea; with AVISO: slaLF_ft.gif


2. Frequency analysis (HF < 180 days; LF > 18 months)

4.1. SLA  RMS (AVISO-S18/12° time period: 1992-2006)
a. Seasonal cycle:  S18.gif;   aviso.gif
b. High frequency: S18.gifaviso.gif
c. Low frequency: S18.gif; aviso.gif


3.  EKE averaged over the Solomon Sea

(EKE computed using the method from altimetry)

a. Hdyn S18/aviso.gif

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4. South boundary

 

4.1 Location of the section (9.8°S): S18.gif


4.2 temperature:
a. Mean: ; S18 <86-06>.gif
b. Variability function of depth; S18 <86-06>.gif; Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: Low frequency: S18<86-06>.gif


4.3 Salinity:
a. Mean: ; S18 <86-06>.gif
b. Variability function of depth ; S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: Low frequency: S18<86-06>.gif


4.4 Meriodional velocity:
a. Mean: S18.gif
b. Variability function of depth ; : S18.gif; Low frequency: S18.gif


4.5 Transports
a. In the thermocline layers:
S18 1986-2006 period: <100-400> m.gif <24-26.5> density.gif;  Low frequency: <100-400> m.gif
b. In the surface layers:
S18 1986-2006 period: <0-100> m.gif;   Low frequency: <0-100> m.gif
c. Shear between the thermocline and the surface layers: S18.gif


4.6 Composite ENSO
a. Vertical section of meridional velocity during winter:  mean.gif; ElNino.gifLaNina.gif
transport 0/350m:   12Sv;    15,95 Sv ;     8 Sv
transport 0/110m:   2,53Sv;    5.23 Sv ;     0,3 Sv
transport 120/310m:   9,62Sv;      10,73Sv ;    7,7 Sv
b. Vertical section of temperature during winter:  mean.gif; ElNino.gifElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
c. Vertical section of salinity during winter:  mean.gif; ElNino.gifElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
d. Vertical section of density anomaly:  El Nino.gif La Nina.gif
e. T and S profiles.gif TS diagram.gif (black: clim; red: El Nino, blue: La Nina)
f. western part of the section: T and S profiles.gif ; TS diagram.gif (black: clim; red: El Nino, blue: La Nina)
g. eastern part of the section: T and S profiles.gifTS diagram.gif (black: clim; red: El Nino, blue: La Nina)
h. Cumulative transport function of depth.gif ; version2.gif (black: clim; red: El Nino, blue: La Nina; dash line: El Nino - La Nina)


4.7 Surroundings
a. 165E: Umeanwinter.gifSmeanwinter.gif; TS profile.gif; TS diagramme.gif
b. 148E:  Umeanwinter.gif Smeanwinter.gif; TS profile.gif; TS diagramme.gif

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5. Solomon strait

 

5.1 Location of the section (5°S): S18.gif


5.2 temperature:

a. Mean: ; S18 <86-06>.gif
b. Variability function of depth; S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: Low frequency: S18<86-06>.gif


5.3 Salinity:
a. Mean: ; S18 <86-06>.gif
b. Variability function of depth ; S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: Low frequency: S18<86-06>.gif


5.4 Meriodional velocity:
a. Mean: S18.gif
b. Variability function of depth; S18.gif; Low frequency: S18.gif


5.5 Transports
a. In the surface layers:
S18 1986-2006 period: <0-100> m.gif;   Low frequency: <0-100> m.gifinflow/outflow.gif
b. In the thermocline layers:
S18 1986-2006 period: <100-400> m.gif<24-26.5> density.gif;  Low frequency: <100-400> m.gifinflow/outflow.gif


5.6 Composite ENSO
a. Vertical section of meridional velocity during winter:  mean.gif; ElNino.gifLaNina.gif
transport 0/310m:  2,07Sv;   3,53 Sv ;     -0.66 Sv
transport 0/120m:  -0.6Sv;    0.54 Sv ;     -2.39 Sv
transport 120/310m:  2,67Sv;    2.99 Sv ;       1.73 Sv
b. Vertical section of temperature during winter:  mean.gif; ElNino.gif; ElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
c. Vertical section of salinity during winter:  mean.gif; ElNino.gif ElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
d. Vertical section of density anomaly:  El Nino.gif La Nina.gif
e. T and S profiles.gifTS diagram.gif (black: clim; red: El Nino, blue: La Nina)

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6. Vitiaz strait


6.1 Location of the section (5°S): S18.gif


6.2 temperature:a. Mean: ; S18 <86-06>.gif
b. Variability function of depth; S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: S18 <86-06>.gif;  Low frequency: S18<86-06>.gif

6.3 Salinity:
a. Mean: ; S18 <86-06>.gif
b. Variability function of depth; S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
c. Variability function of density:  S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
d. Thermocline layers: time evolution: S18 <86-06>.gif;  Low frequency: S18 <86-06>.gif
e. Surface layers: time evolution: S18 <86-06>.gif;  Low frequency: S18<86-06>.gif

6.4 Meriodional velocity:
a. Mean: S18.gif
b. Variability function of depth; S18.gif; Low frequency: S18.gif

6.5 Transports
a. In the thermocline layers:
S18 1986-2006 period: <100-400> m.gif<24-26.5> density.gif;  Low frequency: <100-400> m.gif
b. In the surface layers:
S18 1986-2006 period: <0-100> m.gif;   Low frequency: <0-100> m.gif


6.6 Composite ENSO
a. Vertical section of meridional velocity during winter:  mean.gif; ElNino.gif LaNina.gif
transport 0/330m:  9,17Sv;   11,46 Sv ;     6,21 Sv
transport 0/120m:   2,23Sv;    4,25 Sv ;     -0,99 Sv
transport 120/310m:    6,94Sv;    7,21 Sv ;      6,31 Sv
b. Vertical section of temperature during winter:  mean.gif; ElNino.gif ElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
c. Vertical section of salinity during winter:  mean.gif; ElNino.gifElNino anomaly.gifLaNina.gif; LaNina anomaly.gif
d. Vertical section of density anomaly:  El Nino.gifLa Nina.gif
e. T and S profiles.gifTS diagram.gif (black: clim; red: El Nino, blue: La Nina)

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7.  ENSO composites

El Nino: 86-87; 91-92; 94-95; 97-98; 02-03
La Nina: 88-89; 98-99; 99-00
ENSO is referred to the November-February period:

a. Surface circulation:  mean.gifEl Nino.gif; El Nino anomaly.gifLa Nina.gif; La Nina anomaly.gif
b. Thermocline circulation:  mean.gifEl Nino.gifEl Nino anomaly.gif;  La Nina.gif;   La Nina anomaly.gif
c. Changes in TS profiles between the south entrance, Solomon strait and Vitiaz strait:   mean.gif;   El Nino.gif;   La Nina.gif
d. Changes in TS diagramm between the south entrance, Solomon strait and Vitiaz strait:   mean.gif; El Nino.gif;   La Nina.gif
e. Temperature in the surface layers (0-100m): mean.gif El Nino.gifLa Nina.gif
f. Salinity in the surface layers (0-100m): mean.gifEl Nino.gifLa Nina.gif
g. Temperature in the thermocline layers (24-26.5 sigma): mean.gifEl Nino.gifLa Nina.gif
h. Salinity in the thermocline layers (24-26.5 sigma): mean.gifEl Nino.gif La Nina.gif

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8. Transport in the different straits

a. <0-100>m.gif;   <100-400>m.gif

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9. DRAKKAR G70 (1/4°)


9.1 ENSO composites
a. Surface circulation:  mean.gifEl Nino.gif; El Nino anomaly.gifLa Nina.gifLa Nina anomaly.gif
b. Thermocline circulation:  mean.gif El Nino.gifEl Nino anomaly.gif;  La Nina.gif;   La Nina anomaly.gif
c. Anomalies of wind stress and curl during La Nina period.gif and El Nino period.gif;  (mean state.gif)


9.2 Time evolution
a. wind stress curl.gif averaged over the black box.gif (Natacha)
b. link between the SST and the heat flux.gif averaged over the Solomon Sea
c. link between the SSS and the E-P flux.gif averaged over the Solomon Sea
d. link between the EUC at 160E and the NGCU at the south entrance.gif

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