meeting dates location title author. 2 of 12 dates meeting info presentation info nasa aquarius...
DESCRIPTION
3 of 12 Dates Meeting Info Presentation info 2-year mean of Aquarius SSSTRANSCRIPT
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
Meeting InfoPresentation info
2-year mean of Aquarius SSS
4 of 12Dates
Meeting InfoPresentation info
2-year mean of Aquarius SSS
5 of 12Dates
Meeting InfoPresentation info
Animation of monthly maps
6 of 12Dates
Meeting InfoPresentation info
Monthly maps – 2 year average
7 of 12Dates
Meeting InfoPresentation info
Monthly maps with rain – first year
8 of 12Dates
Meeting InfoPresentation info
Monthly maps with rain – second year
9 of 12Dates
Meeting InfoPresentation info
Salinity/rain anomalies – first year
10 of 12Dates
Meeting InfoPresentation info
Salinity/rain anomalies – second year
11 of 12Dates
Meeting InfoPresentation info
12 month EOF from 2-year averaged Aquarius SSS
12 of 12Dates
Meeting InfoPresentation info
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
Meeting InfoPresentation info
Mean March (dry season) Current
14 of 12Dates
Meeting InfoPresentation info
Mean October (wet season) Current
15 of 12Dates
Meeting InfoPresentation info
• 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
Meeting InfoPresentation info
Salinity gradient maps psu/km – 2 year average
18 of 12Dates
Meeting InfoPresentation info
Salinity gradient maps psu/km – first year
19 of 12Dates
Meeting InfoPresentation info
Salinity gradient maps psu/km – second year
20 of 12Dates
Meeting InfoPresentation info
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 InfoPresentation info