Meeting Dates Location Title Author. 2 of 12 Dates Meeting Info Presentation info NASA Aquarius...

MeetingDatesLocation

TitleAuthor

2 of 12Dates

Meeting InfoPresentation info

NASA Aquarius Mission Timeline

May

SPURS-2 Workshop

EOPM OSST Seattle

Initial SPURS-2 Cruise Window

3 of 12Dates


2-year mean of Aquarius SSS

4 of 12Dates


2-year mean of Aquarius SSS

5 of 12Dates


Animation of monthly maps

6 of 12Dates


Monthly maps – 2 year average

7 of 12Dates


Monthly maps with rain – first year

8 of 12Dates


Monthly maps with rain – second year

9 of 12Dates


Salinity/rain anomalies – first year

10 of 12Dates


Salinity/rain anomalies – second year

11 of 12Dates


12 month EOF from 2-year averaged Aquarius SSS

12 of 12Dates


24 month EOF of Aquarius SSS

Consider shifting site westward to ~130°W to catch the EOF1 center of

action and EOF2 saddle point

13 of 12Dates


Mean March (dry season) Current

14 of 12Dates


Mean October (wet season) Current

15 of 12Dates


• TIWs affect ocean, climate, biogeochemistry

• Aquarius reveals TIWs salinity structure for the 1st time from space).

• Brings new understanding to TIWs.

Lee, Lagerloef, Gierach, Yueh, Dohan (2012, June GRL)

SSS from Aquarius (color shading), SST (contours in a), surface currents (arrows in b) on Dec. 11, 2011 (7-day maps)

PS

UAquarius Captures Pacific TIWs

Reynolds ¼-deg OI

OSCAR

16 of 12Dates

Meeting InfoPresentation infoThe black contours are 100 mm/month isolines. H.Kao &G.Lagerloef, JGR-Oceans in prep, 2013

October 2012 monthly averages

Above: Aquarius SSS gradients reveal prolific frontal structures that are not evident in Argo OI maps. Dark contour is 34.6 isohaline. Below: Differences between the maps above show (left) that satellite SSS are biased low relative to Argo in high rain regions, and (right) frontal patterns unresolved by Argo.

Fronts

17 of 12Dates


Salinity gradient maps psu/km – 2 year average

18 of 12Dates


Salinity gradient maps psu/km – first year

19 of 12Dates


Salinity gradient maps psu/km – second year

20 of 12Dates


Summary

• Proposed SPURS-2 site is in zonal band of strongest seasonal SSS variability

• EOFs show peak SSS amplitude at ~130W; ~ 0.5 psu amplitude. Coincides with null point in quadrature phase EOF2

• Seasonal cycle is lightly asymmetrical over the year; max SSS in March, min SSS in October

• Interannual variations; SSS under the ITCZ in Year 2 (Sep12-Aug13) was significantly less than in Year 1 (Sep11-Aug12).

• Proposed site is in the climatological shear zone between NECC and NEC

• Fronts varied seasonally and interannually; strongest during the wet season.

21 of 12Dates


Meeting Dates Location Title Author. 2 of 12 Dates Meeting Info Presentation info NASA Aquarius...

Documents

Transcript of Meeting Dates Location Title Author. 2 of 12 Dates Meeting Info Presentation info NASA Aquarius...