HYCOM Consortium

The HYCOM consortium is a multi-institutional effort funded by the National Ocean Partnership Program (NOPP), as part of the U. S. Global Ocean Data Assimilation Experiment (GODAE), to develop and evaluate a data-assimilative hybrid isopycnal-sigma-pressure (generalized) coordinate ocean model (called HYbrid Coordinate Ocean Model or HYCOM).

About Us

The HYCOM consortium is a multi-institutional effort funded by the National Ocean Partnership Program (NOPP), as part of the U. S. Global Ocean Data Assimilation Experiment (GODAE), to develop and evaluate a data-assimilative hybrid isopycnal-sigma-pressure (generalized) coordinate ocean model (called HYbrid Coordinate Ocean Model or HYCOM).
Welcome to The HYbrid Coordinate Ocean Model Home Page

An Overview of HYCOM

Documentation - User's Manual, User's Guide and other Nuts and Bolts

HYCOM Model Source Code - download the source code.

Publications - a link to the Publications section of the HYCOM Consortium web page.

HYCOM mailing list - information on subscribing to the HYCOM mailing list.

Contact Information - questions on the model code, model physics or architecture ?


Useful links:
     Ocean Modeling at RSMAS
     Layered Ocean Model Workshop

     NRL Air-Sea Exchange Coefficients (NASEC)
HYCOM Consortium Data Servers

http://www.hycom.org/dataserver/

Hycom Consortium data products are available online from our servers. The data can be accessed via the Live Access Server(LAS) or the Distributed Oceanographic Data System (DODS). A data catalog is available to query the datasets currently online. Additional data can be made online by making a request.

For HYCOM Consortium Data Servers problems,
please contact Ashwanth Srinivasan.
Global Scale Simulations

The emphasis is on long integrations (with a coarse mesh size, usually more than 1°) to evaluate the model's response on decadal to centennial time scales (water mass formation, mixed layer physics,...).

Global Overview
(10 Mb PDF - 03/12/2003)
Basin Scale Simulations

The emphasis is on short integrations with high resolution [with a fine mesh size. i.e., eddy-permitting (1/3°) or eddy-resolving (1/12° )] to evaluate the model's response on seasonal to decadal time scales (eddy activity, mode water formation, ...).

Pacific Overview
(9.6 Mb PDF - 03/12/2003)
Atlantic Overview
(5.7 Mb PDF - 03/12/2003)
Regional/Coastal Studies

The emphasis is on short integrations with high resolution to evaluate the model's behavior in coastal regions.

Japan/East Sea Overview
(4.5 Mb PDF - 03/12/2003)
South Florida Region Overview
(1.7 Mb PDF - 05/31/2005)

HYCOM Caspian Sea Model at NRL Stennis

Process Studies

The emphasis is on idealized configurations that investigate either a specific physical process or the numerical performance of HYCOM.
Data Assimilation Techniques

A hierarchy of data assimilation techniques are evaluated as a function of computational resources and prediction accuracy:
  1. the Optimal Interpolation (OI)
  2. the Parameter Matrix Objective Analysis algorithm (PMOA)
  3. the Reduced Order Adaptive Filter (ROAF)
  4. the Reduced Order Information Filter (ROIF)
Reanalysis

Assimilation of temperature and salinity profiles in HYCOM to reconstruct the ocean state of the past decades.
Ocean Prediction

NRL Stennis (Global)
  Real-time experiment
  Global
  1/12° grid:
  Sub-basins: Atlantic, Indian, Pacific, Polar, and Global

NRL Stennis (Atlantic)
  Near Real-Time Ocean Analysis and Modeling
  Atlantic (28°S to 70°N) HYCOM Nowcast/Forecast, run weekly
  Rectilinear 1/12° Mercator grid:
  9 km at equator, 6.5 km at 45°N, 4.5 km at 60°N

NOAA / NCEP (Atlantic)
  Operational Ocean Analysis and Modeling
  Atlantic (25°S to 70°N) HYCOM Nowcast/Forecast, run daily
  Curvilinear grid, favoring the Western Atlantic:
  ~5 km at US coastline, 9-17 km at Eastern Atlantic coastline

Miscellanea

Everthing else ...
Education and Community Outreach

Making model output available to:
  • the members of our consortium for HYCOM and data assimilation code development;
  • the wider oceanographic and scientific communities, including climate and ocean ecosystem researchers;
  • students in elementary and high school education, to more widely disseminate our research, and to encourage students to consider careers in science and engineering.

HYCOM Consortium Data Servers
   Data products are now available online !

Ocean Surface Currents
   Our web-based ocean current reference site contains information on surface currents in the Atlantic Ocean. Each current has important links, summary text detailing velocity and hydrographic observations, and plots such as, average current speed and locations, drifting buoy positions, sea surface temperature maps, and HYCOM simulations.
Publications

Contributions using HYCOM.
   Submitted, In Press, Published, Drafts, and Non Peer Reviewed.
Internal

Access limited to Partners only.

For more information contact Eric Chassignet at echassignet@coaps.fsu.edu
Meetings

Agendas, Logistical Information, Attendees etc.
Forums

Contact Information

For more information on the HYCOM Consortium, the HYCOM Model or this web page, contact Eric Chassignet at echassignet@coaps.fsu.edu.

For specific questions on the model code, contact Alan Wallcraft at wallcraft@nrlssc.navy.mil.

For questions related to the model physics or architecture, contact
George Halliwell at ghalliwell@rsmas.miami.edu,
Rainer Bleck at bleck@giss.nasa.gov, or
Eric Chassignet at echassignet@coaps.fsu.edu.

For web page additions, deletions or changes, contact Edward Ryan at eryan@rsmas.miami.edu.
HYCOM Mailing List

Information on subscribing to the HYCOM mailing list.