Global Repository | Data Contributors

Contributors to the Global Repository

TCGP's global repository is made possible through the voluntary contributions of data from dozens of government-funded agencies, universities, and other research institutions. Without this network of data contributors, TCGP would not be possible. This page details the various contributing organizations to give proper credit for each of their contributions. Before getting to the full list, the types of organizations, types of data, and methods of contributing are first described.

Types of organizations that contribute data to TCGP

There are many different types of data contributors. These include National Meteorological and Hydrometeorological Services (NMHS), Regional Specialized Meteorological Centers (RSMC), Tropical Cyclone Warning Centers (TCWC), academic and research institutions, and individual researchers. Eventually TCGP hopes to include commercial model data as well.

Types of data contributed

Not all of the data contributed to the global repository consists of model data. Other types of data include analyses of the current and past locations and intensities of tropical cyclones, as well as observational data taken in and around tropical cyclones.

Methods of data contributions

Data are contributed through several different ways:

  • Passive contributions: In many cases, the data are already made publicly available on an open ftp server. In these cases, TCGP scripts periodically pick up the data from these various ftp servers.
  • Active contributions: In cases where the data are not already publicly disseminated elsewhere, special arrangements must be made to either push or pull the data from the contributor to TCGP. In some cases, work must be done to get the data into the ATCF format used by TCGP.  
  • Linked contributions: In some cases, data are not collected and disseminated through TCGP directly, but TCGP provides links to outside websites that provide this information. 


List of TCGP Contributors

Chinese Meteorological Administration (CMA)

Shanghai Typhoon Institute (STI)

STI is the division of CMA that provides typhoon research and modeling for China. STI currently provides TCGP with the operational runs of the GRAPES-TCM (2007 version) for the Western Pacific basin.


National Oceanic and Atmospheric Administration (NOAA)

NOAA is currently the greatest contributor of data to the global repository. A number of NOAA divisions and offices work together to provide a massive amount of data used in prediction tropical cyclones. These include several units of the National Centers for Environmental Prediction Center (NCEP), the NOAA Satellite and Information Data Service (NESDIS), and NOAA's Office of Oceanic and Atmospheric Research (OAR).

National Centers for Environmental Prediction (NCEP)

NCEP is an integral part of the National Weather Service (NWS), providing meteorological, hydrometeorological, oceanic, climate, and space weather prediction services for the United States. Several units of NCEP work together to provide much of the comprehensive suite of TC model guidance. These include the Environmental Modeling Center (EMC), the NCEP Central Operations (NCO), the National Hurricane Center (NHC), and the Hydrometeorological Prediction Center (HPC). The contributions of each of these units is detailed below. 

Environmental Modeling Center (EMC)

EMC develops and improves NCEP's suite of numerical models through partnerships with the research community. EMC's specific contributions to TCGP include:

  • Development of the regional Hurricane Weather Research and Forecasting (HWRF) model
    • Real-time HWRF runs for the North Atlantic, Eastern Pacific, and Central Pacific basins are obtained via NHC's public ftp server.
    • Real-time HWRF runs for the Western Pacific and Indian Ocean basins are provided to TCGP through special arrangement with EMC.
  • Development of the Global Forecasting System (GFS) model and the Global Ensemble Forecast System (GEFS)
    • Real-time GFS and GEFS runs are provided for the North Atlantic, Eastern Pacific, and Central Pacific basins via NHC's public ftp server
    • Real-time GFS runs are provided for the Western Pacific, North Indian Ocean, South Indian Ocean, and Southern Hemisphere via a NCEP public ftp server
  • Contribution of JTWC compute decks in the form of tcvitals files for the Western Pacific, North Indian Ocean, South Indian Ocean, and Southern Hemisphere basins via a NCEP public ftp server:

Central Operations (NCO)

NCO maintains the central computing facility for NOAA and has the responsibility for running all of the various operational model guidance. The global and regional models run at NCO include the GFS/GFES, HWRF, and the Geophysical Fluid Dynamics Laboratory (GFDL) hurricane model.

National Hurricane Center (NHC)

NHC is the designated RSMC for the North Atlantic and Eastern Pacific basins. It is important to note that NHC does not run most of the models that are provided on its ftp server -- most of these models are run at a various global modeling centers (e.g. NCEP, the UK Met Office, the Canadian Meteorological Center, the U.S. Navy's Fleet Numerical and Oceanographic Center, and elsewhere). Other experimental models are run at various research institutions through the support of NOAA's Hurricane Forecast Improvement Project or the NOAA Joint Hurricane Testbed.

NHC's specific contributions to TCGP include:

  • Compute decks:
  • Storm table:
  • a-decks: NHC collects, processes, and interpolates of the comprehensive suite of operational and experimental models for the North Atlantic and Eastern Pacific basins (these models run at NCEP, other modeling centers, and research institutions). TCGP downloads the a-decks from:
  • b-decks: NHC analyzes current and past tropical cyclone locations and intensities for its area of responsibility. TCGP downloads the operational b-decks from
  • f-decks: NHC collects observations of center fixes obtained from various remote sensing platforms and aircraft (many of these center fixes are made by other divisions within NOAA). TCGP downloads the f-decks from
  • Aircraft reconnaissance archive: NHC's CARCAH office collects a large volume of aircraft-based observational data taken in and around hurricanes by the 53rd Weather Reconnaissance Squadron and the NOAA Aircraft Operations Center. All of these operational data streams are maintained by NHC in their aircraft reconnaissance archive at: TCGP mirrors the NHC reconnaissance archive every 15 minutes here.

Central Pacific Hurricane Center (CPHC)

CPHC is the designated RMSC for the Central Pacific basin.

Hydrometeorological Prediction Center (HPC)


Ocean Prediction Center (OPC)


NOAA Office of Oceanic and Atmospheric Research (OAR)

Atlantic Oceanographic and Marine Laboratory (AOML)'s Hurricane Research Division (HRD)

HRD seeks to increase basic physical understanding of hurricanes and improve hurricane models. Importantly, HRD runs the annual field program each year, using a fleet of NOAA aircraft to collect data in hurricanes. HRD's specific contributions to TCGP include:

  • HRD Hurricane WRF run with HEDAS (HWEK).

Earth Systems Research Laboratory (ESRL)

ESRL is a NOAA laboratory (based in Boulder, CO), that develops a number of earth system and numerical weather prediction models. ESRL's specific contributions to TGCP include:

  • Development of the Flow-following Finite-volume Icosahedral Model (FIM)
  • Development of the

Geophysical Fluid Dynamics Laboratory (GFDL)

GFDL is another NOAA laboratory dedicated to the development of earth systems models. GFDL's specific contributions to TCGP include:

  • Development of the GFDL: Hurricane Model.
  • Contribution of GFDL model runs for the Western Pacific

NOAA Office of Marine and Aviation Operations (AMAO) - Aircraft Operations Center (AOC)

AOC is responsible for maintaining the small fleet of NOAA Hurricane Hunter aircraft that fly into and around hurricanes to collect research data.

NOAA Environmental Satellite, Data, and Information Service (NESDIS)


Hurricane Forecast Improvement Program (HFIP)



U. S. Department of Defense

Naval Research Laboratory (NRL)

NRL is the U.S. Navy's main research laboratory.

Fleet Numerical Meteorology and Oceanography Center (FNMOC)






Joint Numerical Warning Center (JTWC)

JTWC is the U.S. Department of Defense agency responsible for issuing tropical cyclone warnings for the Pacific and Indian Oceans. Much of JTWC's data is not available for public access due to their sensitive military mission. JTWC's specific contributions to TCGP include:

  • Provides analysis of current and past TC location and intensity in the Western Pacific, the North Indian Ocean, the South Indian Ocean, and the Southwest Pacific. These 'compute' decks are distributed via NCEP/EMC's ftp server as reformatted tcvitals files (note that these only run when the GFS model undergoes relocation, which occurs for systems of tropical storm strength of above). 
  • JTWC also provides a consistent ATCF-based numbering scheme for TCs in the other global basins outside of the North Atlantic and East/Central Pacific. This JTWC 'storm table' is distributed via NRL's ATCF  collaboration site:



University Contributors

Massachusetts Institute of Technology (MIT) - Professor Kerry Emanuel

Professor Kerry Emanuel is a world renowned expert in the thermodynamics of tropical cyclones and how storm dynamics plus environmental factors such as the sea surface temperature (SST) and upper tropospheric outflow temperature act to set an upper bound on the intensity that a system can achieve. Such a limit is called the Maximum Potential Intensity (MPI). Professor Emanuel has developed an axisymmetric hurricane modeling system that embodies the essence of MPI. 


University of Hawaii -- Professor Yuqing Wang