SEACOOSMPCC

1
SEA-COOS Model-Products Coordinating Committee
27-28 January 2003 North Carolina Computer
Center RTP, NC

• Participants
• Eric Sills, NCSC
• Inkweon Bang, UMiami, RSMAS
• Ruoying He, USF
• Alfredo Aretxabaleta, Brian Blanton
• Karen Edwards, UNC

2
Agenda

• MON AM
• Meeting Goals (B. Blanton)
• Orientation to NCSC (E. Sills)
• Outline thoughts on SNFE (B. Blanton)
• EFSIS experience to Date (I. Bang)
• Outline thoughts on SSRA (R. He)
• MON PM
• Draft plan for SNFE (all)
• TUES AM
• Draft plan for SSRA (all)
• TUES NOON
• Adjourn

3
SEACOOS Model Domains

• Scale of Atmos Forcing
• Mixed Tidal Regimes
• Various Manifestations of Western Boundary
  Current ( Loop Current/Florida Current/Gulf
  Stream Complex)

4
Meeting Goals To Develop

• Common
• Met. Model surface fluxes
• Tidal Elevations on OBC
• Detailed (written) plans for HindCast Experiments
• Dates of interest
• Parameters of interest
• Independent Model Runs
• Common visualization/output
• Detailed (written) plans for initial
  implementation of Nowcast/Forecast System
• Dynamics only (no DA)
• Barotropic mode only
• No model coupling

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Meeting Goals, Contd

• Table of Models used by SEACOOS regions
• Parameters/Physics among groups
• MODEL DETAILS web page
• Statements from each group regarding Models,
  regions, etc. for the SEACOOS web developers
• List of Institution Urls
• NCSC Allocation request for upcoming
  computational year

6
Model Parameter/Physics Table
7
Common Modeling Issues
Regardless of Hind/Now/Forecast

• Offshore Open BCs
• Elevation Tideslarge scale signal
  (weatherother)
• FES, OSUs TPXO, Tierney et. Al.
• Mass Flux
• Surface Fluxes , Various Met Model Choice
• AWIP versions of NCEPs ETA10
• Nonhydrostatic research versions
• Reanalyses
• ARLs EDAS 80km Archive
• Interior Initialization Mass Field
• Climatology
• HYCOM,MERCATOR, COFS, POM (Oey)

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SEACOOS SNFE

• Computation of 24Hr Nowcasts
• Followed by XX Hr Forecasts
• Driven by Met Model Flux Forecasts

10
UNCs Nowcast/Forecast System
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UNCs Nowcast/Forecast System
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UNCs Nowcast/Forecast System
WindTide
Data Assimilation Component
13
Operational System Timeline
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Nowcast/Forecast Issues

• Timely acquisition of Met Model Output
• Either Direct from NCEP ftp or via LDM
• Manipulation of GRiB data to Model
• GRiB -gt netCDF -gt Model nodes using wgrib and
  Ncar ncl command scripts
• Coordination of needed model fields
• Perl functions to extract, build input data,
  schedule model runs
• Queue management (NQS)
• Storage (Data Migration Facility)
• Perl function access to tape archive

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Mapping GRiB to Model Nodes
NCL scripts
TriPack
GRiB netCDF
Arbitrary nodes
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Useful URLs

• NCSC http//www.ncsc.org
• NCSC Users Guide
• http//www.ncsc.org/usersupport/USERGUIDE/toc.html
  
• Queue management (NQS)
• http//www.ncsc.org/usersupport/USERGUIDE/9.html
• Origin - http//www.ncsc.org/usersupport/USERGUIDE
  /11.html
• SP - http//www.ncsc.org/usersupport/USERGUIDE/10.
  html
• Storage (Data Migration Facility /dmf)
• http//www.ncsc.org/usersupport/USERGUIDE/7.html

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Useful URLs (contd)

• UCAR/NCAR
• http//www.ucar.edu/ucar/
• Ncar Resources http//ngwww.ucar.edu/
• Command Language (NCL) resources
• Ncar Graphics
• GRiB Met Files
• Grib Format
• http//dss.ucar.edu/docs/formats/
• Wgrib (C GRiB file manipulator/decoder)
• http//wesley.wwb.noaa.gov/
• http//wesley.wwb.noaa.gov/wgrib.html
• Ggrib GRiB file subdomain extractor
• http//wesley.wwb.noaa.gov/ggrib.html
• READ_GRIB Matlab GRiB decoder
• http//www.opnml.unc.edu/OPNML_Matlab/

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SEACOOS SSRA Hindcast Experiments
Regional and SEACOOS-wide responses

• March 2001
• Clear SeaWIFS images
• November 2001
• May-June 2002
• Jan 2003

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March 2001

• 5-8 March
• 19-23 March

• ARL/EDAS 80km winds
• FES95 Tidal BCS

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SABSOON
Instrumented Navy Towers
Operating towers
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ARL/EDAS 80km Grid
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Storm 1
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6 March 2001 Water Vapor
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GS 07 March 2001
07 March 2001
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Storm 2
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Storm 2
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22 March 2001 Water Vapor
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GS 26 March 2001
26 March 2001
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6 March ARL/EDAS 80km Winds
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Water Level
Observed
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Water Level
Observed
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19-23 March 2001
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Drifters (1)
Courtesy, J. Hare, NMFS, Beaufort NC
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Drifters (2)
Courtesy, J. Hare NMFS, Beaufort NC
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Drifters (3)
Courtesy, J. Hare NMFS, Beaufort NC
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Mod Vs. Drifters

• Vertically Avgd
• Purely Passive
• Filtered
• Wind Strength in ARL/EDAS poor!
• Missing Cross shelf flow

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Grays Reef Wind Stress
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R2 Wind Speed
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March 2001 SeaWIFS
07 March
08 March
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November 2001
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Nov 01 SeaWIFS
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Jan 2003
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Jan 2003
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22 Jan 2003 SST
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