Modeling the influence
of local/external processes on nitrogen and phytoplankton dynamics in the GoM/GB
region
R. Ji
With help from:
PI team: Davis, Chen, Beardsley, Townsend, Durbin, Runge, Flagg
UMASS-D modeling group: Q. Xu, G. Cowles, R. Tian, S. Hu, D. Stuebe
NMFS: D. Mountain, J. Hare, M. Taylor
Status
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Completed 1995-1999 continuous
run for FVCOM+NPZD; comparing data/model results |
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Completed 1995 Pseudocalanus
model run; using “stage with mean age” method; Testing different
implementation of CPD |
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Examining effect of freshening
on phytoplankton dynamics (data analysis + numerical exp.) |
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1 ms. submitted to JMS + 1 ms.
to be submitted to GRL + 1 new baby |
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Model structure
Surface - Nitrogen
Surface - Phytoplankton
Transect - Phytoplankton
Model skills
Model vs data on GB
Model vs data on GB
Model vs data on GB
Model vs data on GB
Model vs data in Basins
Model vs data at CMO
Sensitivity to
IC
(GB crest)
Sensitivity to
IC
(Wilkinson Basin)
Sensitivity to
BC
(Scotian Shelf)
Sensitivity to BC
Nitrogen cycle
N demand and supply on
GB
Modeled N flux on GB
Response to bottom N
change
Bloom - freshening
Bloom “propagation”
Bloom “propagation”
Timing-SSS anomaly
Magnitude/NPP
Issues
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Huge amount of model output, O(TB) |
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Very limited availability of
data in GoM during GLOBEC year (N, Vertical profile) |
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Boundary conditions (N/P/Z/D,
T/S) |
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Need free grad students |
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