Feature Oriented Regional Modeling System (FORMS)

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Feature Oriented Regional Modeling System (FORMS)
as a synthesis component of the Global and
Coastal IOOS

• Avijit Gangopadhyay
• University of Massachusetts Dartmouth
• Email avijit_at_umassd.edu
• Seed funded by NASA

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OUTLINE

• Feature Oriented Regional Modeling
• Concept -- Initialization/Synthesis Methodology
• Example of Strategy in Sicily Strait
• Shallow water applications CCS
• Global Applications
• Feature oriented synthesis..

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Gulf Stream Front and Ring Analysis
2/11/02
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Features in Western North Atlantic
Deep Sea region (GSMR)
Coastal region (GOMGB)

• Gulf Stream
• Warm Core Rings
• Cold Core Rings
• Southern Recirculation Gyre
• Northern Recirculation Gyre
• Deep Western Boundary Current
• Gangopadhyay et al., 3-part series in 1997
  Journal of Atmospheric and Oceanic Tech. (14)
  13141365

• Maine Coastal Current
• NEC Inflow
• GSC Outflow
• Jordan Basin Gyre
• Wilkinson Basin Gyre
• Georges Basin Gyre
• Georges Bank Gyre
• Tidal Mixing Front
• Gangopadhyay et al. 2003 Continental Shelf Res.
  23(3-4), 317-353
• Gangopadhyay and Robinson, 2002 DAO 36(2002)
  201-232

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U(x,y,z)?(y)UT(x)-UB(x)?(x,z) UB(x)
T(x,y,z)Ta(x,z)?(x,z)?(y) where, Ta(x,z)T0(x)
-Tb(x)?(x,z) Tb
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In general, a coastal current (CC), a front (SSF)
and an eddy/gyre (E/G) are represented
by CC TM(x, ?, z) TMa(x, z) aM(x, z) ?M(?)
  SSF Tss(x, y, z) Tsh (x, z) (Tsl (x,
z) Tsh(x, z)) ?(?, z)   E/G T(r, z) Tc
(z) - Tc (z) - Tk (z) 1-exp(-r/R)   where,
TMa(x, z), Tsh (x, z) and Tc (z) are axis,
shelf and core ?(?) ?? (0 ? ? ? W) ?(?,
z) ½ ½ tanh(?-?.Z)/?  
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Strategy for GOMGB
Feature Models at feature locations Regional
Climatology FORMS
MCC, WBG, JBG, GBG, GBAG, TMF, SSF, Inflow/Outflow
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FORMS Protocol

• Identify Circulation and Water mass features
• Regional Synthesis -- Processes from a modeling
  perspective
• Synoptic Data sets -- in-situ and satellite
• Regional Climatology (Background Circulation)
• Objective Analysis (Climatology Feature Models)
• Simulation -- Nowcasting/Forecasting

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Feature oriented methodology is applicable to ALL
different Numerical Models

• MOM (Modular Ocean Model)
• ROMS (Regional Ocean Model System)
• POM (Princeton Ocean Model)
• HYCOM
• MIT GCM
• HOPS (Harvard Ocean Prediction System)
• Finite Element / Finite Volume models

It is an Initialization and Assimilation
Methodology
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Strait of Sicily Feature Oriented Regional
Modeling Set Up
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FORMS Applications in Different Oceans
Ocean Application
Western North Atlantic Operational Modeling, e.g. AFMIS-RFAC
Strait of Sicily Dynamical Analysis
Monterey Bay Real-time forecasting w/ ROMS AOSN-II in summer 2003 upwelling
Brazil Current Meander-eddy-Upwelling Interaction
Persian Gulf, Arabian Sea, Red Sea Monsoonal FORMS
Chilean Waters - Northern Humboldt Currents Nested Biophysical Modeling
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Shallow water feature models

• Use of intelligent observations that are
  important to resolve the scales and represent the
  underlying dynamical processes
• Not only temperature-salinity structure, but
  include first-order dynamics
• Process-oriented feature models

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Arabian Sea - Persian Gulf Red Sea
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Meander-eddy-Upwelling System
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Elements of Synthesis

• Synthesis of Multi-sensor observational system
  Satellite (SST, SSH, SSC), in-situ, CODAR --
  using feature-oriented approach
• Process-oriented shallow water feature models
• Feature Tracking -- High resolution data fusion
• EOF analysis for Vertical Structure determination
  (Warn-Varnas et al., 2004)
• High-resolution regional climatology
• Dynamical Adjustment via Models -- FORMS

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Some more thoughts

• Feature-oriented method allows for strategic
  deployment of available resources
• It optimizes (possibly maximizes) return on
  investments (ROIs)
• The returns are not only in but in science,
  too
• Minimizes human involvement (loss) because its
  a knowledge-based system

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Thank You!!www.smast.umassd.edu/modeling/