Outline Ecosystem model & winds Model-data comparisons Key parameters

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Presentation transcript:

Outline Ecosystem model & winds Model-data comparisons Key parameters Model-model comparisons

Dynamic Ecosystem-Carbon Model Chlorophyll

Quickscat Winds

NCEP Winds

Wind comparisons Qscat winds: stronger mixing, colder SST, higher biomass….. ……..following outputs from NCEP

NCEP Winds

In situ chl. (left) and model chl In situ chl. (left) and model chl. (right): Nov, 2006 (top) Oct-Nov, 2005 (bottom)

Model (lines) vs. data (Symbols)

PON from model (left) and in situ (right) Nov. 2003

PON from model (top) and in situ (bottom) Sep. 2005

140W-125W, 8N-8S

Carbon, chl., C:chl at 125W

Carbon, chl., C:chl at 140W

Question How we define/measure POM? Model outputs: In situ: phy+zoo(?%)+detritus(size?) Satellite: phy+zoo(?%)+detritus(size?) Model outputs: Phy+zoo+large detritus Phy+50%(ZS+DS)+DL Phy+total detritus

Phy+total detritus 140W-125W, 8N-8S

Phy+50%(ZS+DS)+large detritus 140W-125W, 8N-8S

Phy+zoo+large detritus 140W-125W, 8N-8S

Chlorophyll ML: similar (tuned), DCM: different

C:Chl ratio ML: similar; vertical: some difference

Phytoplankton C ML: different; vertical: similar

Growth rate: large difference

NPP: similar

NPP (mg C/m2/d) from Cbmodel (red) and Ecomodel (black)

Summary Larger spatial & temporal variations in Eco-model than Cb-model Eco-model over-estimates spatial variability or under-estimates magnitudes in warm waters Cb-model under-estimates temporal variability Similarity: NPP>C:Chl>PhytoC, chl., growth rate

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