Data Flow Diagram for GTSPP

(Click the ovals or boxes for more information or to link to the GTSPP Data Centers)

IGOSS SOCs

IGOSS in the Integrated Global Ocean Services System. An SOC is a Specialized Oceanographic Center of IGOSS. In this case the SOC is a center which has taken on the responsibility of accepting data in either the Bathy, Tesac, or Drifter format of the World Meteorological Organization (WMO) or some other agreed format for conversion to one of the 3 WMO formats. The SOC inserts the data on the Global Telecommunications System of the WMO within 30 days of its collection.The data reaches the Real Time Data and Assembly Center via the GTS. Users needing a copy of the data have to have a connection to the GTS or can obtain it from the Real Time Data and Assembly Center by FTP.

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BSH, NWS, JMA

For various reasons the total available data set reported on the GTS is often not complete at any one receiving site. Therefore the GTSPP has established procedures to obtain copies of the data sefs from four centers around the world. The first center is the Real Time QC and Assembly Center in the Marine Environmental Data Service (MEDS) in Canada. At the end of each month the three centers listed above provide copies of the data they copied from the GTS to MEDS. MEDS performs a duplicates analysis on the four files, adds any missing data from the three centers to the real time database, and forward copies to the Continuously Managed Database in the US National Oceanographic Data Center in Washington.

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Fleet Numerical Meteorology and Oceanography Center (FNMOC)

The FNMOC provides copies of declassified XBT data gathered during fleet operations to the GTSPP on a monthly basis. The data stream includes both recent and historical data . The data are added to the real time database in MEDS and transferred monthly to the Continuously Managed Database in the US National Oceanographic Data Center in Washington.

Fleet Numerical Meteorology and Oceanography Center
Monterey
California
USA

For more information visit the FNMOC home page at  https://www.fnmoc.navy.mil/

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Japan Oceanographic Data Center (JODC)

The JODC acquires copies of the sub-surface data collected by the Japanese fleet. The data are provided to the Real Time QC and Assembly Center in MEDS, Canada. The data are added to the real time database and provided monthly to the Continuously Managed Database in the US National Oceanographic Data Center.

Japan Oceanographic Data Center
Hydrographic and Oceanographic Department
Japan Coast Guard 5-3-1,
Tsukiji, Chuo-ku, Tokyo, 104-0045 Japan

Telephone:    +81-3-3541-4295
Telefax:    +81-3-3545-2885
E-mail:   

For more information visit the JODC home page at http://www.jodc.go.jp/

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Global Telecommunications System Data Flow

Content:    Sub-surface temperature and salinity data from XBTs, CTDs, moored and drifting buoys, PALACE floats.
Format:    WMO Bathy (JJXX), Tesac (KKXX), and Drifter (ZZXX) formats.
Frequency:    Continuous mostly within 24 hours of the observation on the GTS.
Availability:    Available on the GTS as broadcast.
Reason:    To provide data to operational users at the earliest possible date.

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Copies of GTS Data Flow

Content:    All Bathy (JJXX) and Tesac (KKXX) messages read from the GTS for one month.
Format:   WMO GTS Bulletin format containing Bathy (JJXX) and Tesac (KKXX) messages.
Frequency:    Transferred monthly via the Internet.
Availability:    Could be made available by special arrangement with MEDS, Canada
Reason:    To provide data not on the North American GTS circuits to the GTSPP databases.

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US Navy Declassified Data

Content:    Data from XBTs that have been declassified in the past 30 days
Format:   
Frequency:   Daily
Availability:    Provided by the US Navy
Reason:    To permit assembly of the most complete temperature and salinity database.

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Japanese Fishing Fleet Data

Content:    Data from the Japanese Offshore Fishing Fleet for past month
Format:    ASCII file
Frequency:    Monthly
Availability:   Provided by the Japanese Oceanographic Data Center
Reason:    To permit assembly of the most complete temperature and salinity database.

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Operational Data Sets and Products on Request or by Subscription

Content:    Data sets and products from the operational data flow.
Format:    ASCII and binary data files, documents, and maps.
Frequency:    From 3 times weekly and monthly to response to ad-hoc requests.
Availability:    On-line or by request. Click the center box for data sets and products and how to obtain them.
Reason:    To provide data and products to operational users at the earliest possible date.

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Transfer of Operational Data to the CMD at the US NODC

Content:    Copies of all sub-surface temperature and salinity data received since the last transfer
Format:    Binary file in GTSPP Format
Frequency:    3 times weekly, generally on Monday, Wednesday, and Friday via FTP
Availability:    Available by arrangement with the Real Time QC and Assembly Center
Reason:    To keep the CMD as up to date as possible for users.

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Data Sets and Products on Request from the CMD

Content:    Data sets and products from the continuously managed database.
Format:    ASCII and binary data files, documents, and maps.
Frequency:    In response to ad-hoc requests.
Availability:    On-line or by request. Click the center box for data sets and products and how to obtain them.
Reason:    To provide the data and data products to the users.

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Transfers to and from the WOCE Sub-Surface Data Center

Content:    Data sets of temperature and salinity data covering specific periods of time.
Format:    Multually agreed formats as convenient.
Frequency:    As required.
Availability:    Only to the other center.
Reason:    To keep the contents of the two databases complete and the same.

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Delayed Mode Data from Other Sources

Content:    Sub-surface ocean temperature and salinity data from centers not participating directly in the GTSPP.
Format:    Various mutually agreed formats.
Frequency:    Continuously as available.
Availability:    From the CMD after the data have been processed and loaded.
Reason:    To provide the most complete database of temperature and salinity data.

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Transfers of Data to Science Centers

Content:    All data from the CMD for a specific area of the world's oceans.
Format:    GTSPP binary format.
Frequency:    Monthly and Annually.
Availability:    Data are already available to users from the CMD.
Reason:    The science centers use the monthly data for serving users and perform scientific QC on the annual data.

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Transfers of  Data from Science Centers to the CMD

Content:    Copies of delayed mode temperature and salinity data and data and flags for data from QC.
Format:    GTSPP binary format and various other mutually agreed formats.
Frequency:    As available for delayed mode data and annually for data from QC.
Availability:    Data are or will be available from the CMD.
Reason:    The delayed mode data replace real time copies in the CMD. The science flags are added to the CMD.

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Transfers of the Data to World Data Centers A and B, Oceanography

Content:    All data in the GTSPP CMD for the past year.
Format:    GTSPP binary format.
Frequency:    Annually
Availability:    Data are available both from the CMD and the World Data Centers.
Reason:    For long term archival to ensure the data will be available to future users.

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Services to Users from the WDCs

Content:    GTSPP temperature and salinity data and associated products.
Format:    Various including ASCII files, CD-ROMs, documents, and maps.
Frequency:    On request.
Availability:    On request.
Reason:    To make the data available to future users.

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Services to Users from the Science Centers

Content:    Specific data sets, analyses, and products
Format:    Various
Frequency:    As required.
Availability:    To national and international users.
Reason:    To provide services to local users and international scientific experiments and researchers.

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