Learning Center
Plans & pricing Sign in
Sign Out




to develop Tide Station hardware and software, culminating
with our current station configurations.
The National Ocean Service (NOS) operates a network
of approximately 225 permanent tide and water level
measurement stations in support of its Tides and Water
Levels Program. Of this total, 54 stations are located on the
Great Lakes and connecting waterways. The remainder are
located on the tidal waters of the United States and its ter-
ritories. In addition, at any given time, another 100 stations
may be in operation on a temporary basis.
As mandated by the Tides and Water Levels Program, the
purpose of each station in the network is to perform and
record accurate water level measurements on a regular and
uninterrupted basis over long periods of time while main-
taining a stable elevation reference. This information is later
processed at NOS headquarters in Rockville, Maryland.
Subsets of the network also operate in support of other
NOS programs and mission responsibilities.
In the 1980’s, Sutron designed the next-generation water
level measurement system (NGWLMS) to be a stand-alone
data acquisition and transmission system. Transmission was
be via the GOES satellite system. Design requirements for
environmental operations were quite demanding and includ-         The National Oceanic and Atmospheric Administration’s
ed operations to 300º C, and a high degree of reliability.        NOS chooses Sutron’s Tide Stations for accurate & reliable
                                                                  performance. Pictured above is a Sutron NOS installation
The units were actually ruggedized computers packaged             on the Chesapeake Bay.
in a sealed enclosure, incorporating 80C88 processor data
acquisition circuitry to support a wide range of instruments
and sensors. The system also featured simultaneous com-            OWNER         National Ocean Service, NOAA, a
munication by radio and telephone.                                               division of the US Dept. of Commerce
Sutron’s Tide Stations, past and present, are designed to:         PURPOSE:      Perform and record accurate water
    Survive in harsh, coastal environments                                      level measurements on a regular and
                                                                                 uninterrupted basis over long periods of
    Support a wide variety of water level monitoring and                        time while maintaining a stable elevation
     weather instruments. Sutron’s NOS system handles                            reference
     11 oceanographic/meteorological sensors including
     wind speed, direction and gust, water current speed           EQUIPMENT: 100 + Sutron Tide Station Network
     and direction, air and water temperature, barometric
     pressure, water conductivity, dew point, rain fall and
                                                                   COMPLETED: 1982 - on-going
     solar radiation.                                              CONTACT:      Mr. Tom Mero
    Provide pre-programmed support for all NOS-                                 (301)443-8026
     required tidal data processing, including:
    - 6-Minute GOES self-timed transmissions
    - 1-Hour GOES self-timed data transmissions
                                                                      CONFIGURATIONS & GAUGES
    - DQAP (Outlier elimination) water level averaging
                                                                  MAIN STATION                      3001-0000-1
    - Redundant data transmissions
    - Tsunami and storm surge data processing and
                                                                  BACK-UP GAUGE                     3101-0000-1
      transmission                                                REDUNDANT GAUGE                   3101-0000-2
    Support GOES Satellite and a wide variety of other                           QUICKLY DEPLOYABLE...
     telemetry methods
                                                                  HYDROGRAPHICS GAUGE               3102-0000-1
    Provide built-in surge protection for all inputs
                                                                  NOTE: BASIC TIDE STATIONS DO NOT INCLUDE

                                                21300 RIDGETOP CIRCLE           STERLING, VA 20166             WWW.SUTRON.COM
                                                (703)406-2800                   (703)406-2801 FAX              SALES@SUTRON.COM
The National Ocean Service (NOS), part of the National
Oceanic and Atmospheric Administration (NOAA), has the
responsibility to accurately measure tide levels around
the perimeter of the United States. NOS ensures that
measurements are the most accurate possible by:
•    Using the best water level instruments available
•    Providing backup measurements at all sites
•    Using consistent and proven station installation
     techniques to ensure uniformity
•    Using real-time quality control on the measurements
NOS meets the need for timely information by using
GOES satellite data telemetry from tide stations. Backup
telemetry is provided by various forms of telephone
communications (e.g. dialup, cellular, CDPD) and line-of-site
(LOS) radio.

NOS will not identify water level measurement hardware as
a tide station until it has the following software capability:
•    Real-time quality control of values used in water level
•    Dial-in report capability
•    NOS GOES self-timed report format                           screening is completed the average is recomputed using
•    Storm surge detection and reporting via the GOES            only values within the limits.
     random transmission facilities
•    Telemetry multitasking – a tide station MUST be able
     to communicate over several paths simultaneously
                                                                 DIAL-IN REPORTS
                                                                 Sutron’s XPert loggers support real-time reports generated
•    Data exchange with a physically separate backup             from information stored within the logger.
     data logger and level gage
                                                                 NOS requires a very specific dial-in (or LOS radio call
•    Interface to all water level and weather instruments        in) report called the “PORTS” Tag. PORTS – Physical
     commonly used by NOS                                        Oceanographic Real Time System – is a program to provide
Sutron tide stations are based on our XPert data logger          tide levels to shipping interests. The PORTS Tag report is
series. XPerts run the powerful Windows CE multi-tasking         a very specific display of water level and weather data
operating system. Sutron has taken advantage of Windows          collected a special PORTS tide stations. All Sutron XPert
CE to equip each tide station with software that meets and       loggers can generate PORTS Tag reports.
exceeds all of the NOS requirements.                             Sutron has also worked with NOS to develop a more
                                                                 general-purpose dial-in report. This report formats a text
                                                                 page based on whatever instruments are connected to the
REAL-TIME QUALITY CONTROL                                        tide station.
Sutron’s XPert loggers contain the NOS developed and
approved method for data averaging.
Because not all water level measurements are valid,              NOS GOES SELF-TIMED REPORT
occasional communications glitches or instrument problems        FORMAT
can result in one or more bad values. NOS uses very
                                                                 All Sutron XPert loggers support the highly-specific data
specific averaging techniques for water level measurement.
                                                                 compression methods required to send tide station data via
Water levels are reported every six minutes. The reported
                                                                 the GOES satellite system.
value is a 3-minute average of levels taken once per
second NOS minimizes the bad data problem through a              The newest NOS GOES format is controlled by a user-
technique called Data Quality Averaging Process or DQAP.         created table that allows:
A DQAP average is computed in two passes through the             •    100 percent control of the message content between
sample set. First, a traditional average and standard                 the NOS-specific header and trailer
deviation are computed. Next, each sample is compared
with the average plus or minus three standard deviations.        •    2 or 3-byte encoding of water levels with scaling
If a sample exceeds the test limits it is flagged. When the      •    2 or 3-byte encoding of water levels without scaling

                                               21300 RIDGETOP CIRCLE            STERLING, VA 20166             WWW.SUTRON.COM
                                               (703)406-2800                    (703)406-2801 FAX              SALES@SUTRON.COM
 •    User-defined one or two-byte data
      identification flags
 •    Instrument specific 2 or 3-byte
      encoding of data and quality
      assurance parameters from NOS
      approved water level instruments
      such as the AQUATRAK acoustic
      sensor and the BEI absolute shaft
      angle encoder
 •    Full control of the amount and type
      of redundant (past time) data sent
      with each message
 •    Generation of the new NOS 6-
      minute interval self-timed GOES
      transmissions at 300 bps
 The NOS GOES format is incomparably
 efficient in terms of information per byte
Sutron is the ONLY MANUFACTURER that                          slicing allows the XPert to easily carry on both activities at
offers the new 6-minute transmission format on a self-timed   one time. A fully configured XPert logger can have up to nine
channel, a radical advance for a system that typically        COM ports plus a family of input/output modules and all of
obtained data every three hours.                              the COM ports can be active at one time.
                                                              DATA EXCHANGE WITH BACKUP
STORM SURGE DETECTION AND                                     Sutron XPert loggers support “phantom” sensors that do not
REPORTING                                                     reside locally. XPert supports special communications blocks
Sutron XPert loggers offer full support for real-time         called GETTag and SENDTag that allow the user to collect
detection of events.                                          data from and log values collected on a completely separate
                                                              XPert logger. The second logger can be connected to the first
 When such events as sudden changes in water level or         by ANY communications path including hard-wire serial, LOS
unusually high or low water levels occur, the XPert formats   radio, or telephone.
special GOES messages and transmits them over an
assigned random channel. These random reports, routinely      In addition, XPert loggers support remote time synchronization.
used for flood and storm warnings, can be sent very quickly   A primary tide station is normally equipped with a GOES
after an event is detected.                                   satellite transmitter. GOES transmitters make use of GPS-
                                                              derrived time that is accurate to milliseconds. The primary
                                                              logger can pass the extremely accurate time to the backup
 TELEMETRY MULTI-TASKING                                      logger so that time tags match.
A Sutron XPert , capable of true multi-tasking, will never    NOS uses the phantom sensor capability, along with the time
tell a user it is “busy” when it is asked to make a GOES      synchronization, to communicate with the tide station backup
transmission while a user is receiving a PORTS Tag report     gage.
over a dialup connection. Preemptive multitasking with time
                                                                INTERFACE TO ALL WATER LEVEL &
                                                                WEATHER INSTRUMENTS COMMONLY
                                                                USED BY NOS
                                                                XPert data loggers have built-in software to support ALL of
                                                                the water level sensors commonly used by NOS (or anyone
                                                                else, for that meatter). Among the sensors supported are:
                                                                •     AQUATRAK acoustic level sensor (all types, including SDI)
                                                                •     Quadrature output shaft angle encoders (all
                                                                      manufacturers including Sutron, DA, Handar, and others)
                                                                •     BEI absolute shaft angle encoder
                                                                •     Miros Air Gap radar sensor (serial output)
                                                                •     All common millivolt-level output pressure transducers such
                                                                      as Druck
                                                                In addition, XPert software allows interface to all common
                                                                weather instruments (wind speed and direction, barometric
                                                                pressure, air temperature, water temperature, relative

                                              21300 RIDGETOP CIRCLE            STERLING, VA 20166              WWW.SUTRON.COM
                                              (703)406-2800                    (703)406-2801 FAX               SALES@SUTRON.COM

              TIDE STATION
                TEXAS A&M

                                 STILLING WELL STATION
                                 TEXAS A&M PROJECT

                   21300 RIDGETOP CIRCLE   STERLING, VA 20166   WWW.SUTRON.COM
                   (703)406-2800           (703)406-2801 FAX    SALES@SUTRON.COM
(703)406-2800           (703)406-2801 FAX    SALES@SUTRON.COM
 TCOON data is primarily used...
  to establish tidal datums;
  to provide high-quality water-
   level information; &
  to prepare affected communities
                                                                          Wind Anemometer
   for events such as hurricanes &
   tropical storms.                                                          Radio Antenna
                                                             SatLink2 - Satellite Transmitter
                                                                                Solar Panel
 In 1989 the Conrad Blucher Institute for Surveying and
 Science (CBI) at Texas A&M University-Corpus Christi                Xpert - Data Collector
 commenced installation of a modern state-of-the-art
                                                                         Water Level Sensor
 water-level measurement system along the Texas coast.
 In 1991, this network of water level gauges became the                Water Quality Sensor
 TEXAS COASTAL OCEAN OBSERVATION NETWORK                                      Current Meter
 TCOON is managed under the direction of the Texas
 General Land Office, in cooperation with the Texas
 Water Development Board, the U.S. Army Corps of
 Engineers, and the National Oceanic and Atmospheric
 Administration (NOAA). The network utilizes the
 SYSTEM (NGWLM) developed by NOAA’s National
 Ocean Service (NOS) and Sutron Corporation for the
 National Water Level Observation Network. Water-
 level data and other environmental parameters are                         OWNER:         Texas A&M
 made available in near-real time via packet radio,
 cellular telephone, and the Geostationary Operational                     PURPOSE:       To establish tidal datums; to provide
 Environmental Satellite (GOES). The TCOON system was                                     high-quality water-level information;
 installed using NOAA criteria for guidance to obtain                                     & to prepare affected communities for
 reliable water level data and to address legal concerns                                  events such as hurricanes & tropical
 for the admissibility of the data in the determination of                                storms.
 littoral boundaries.
                                                                           EQUIPMENT:     Sutron Tide Stations, Sutron’s Xpert
 The information collected by TCOON has also been                                         Datalogger, Sutron’s SatLink2 GOES
 used for                                                                                 Transmitter, wide variety of sensors
     Oil-spill preparation and response                                   DATE:          1989 - on-going
     Recreation, marine and navigation safety
     Oceanographic and environmental research,                            CONTACT:       James Rizzo
                                                                                          Division of Nearshore Research
     Coastal engineering and construction
                                                                                          Texas A&M University Corpus Christi
     U.S. Army Corps of Engineers dredging operations                                    6300 Ocean Drive
      and management of Texas coastal waterways                                           Corpus Christi, Texas 78412
                                                                                          Ph: (361) 825-5758
 The TCOON system has 26 stations , the majority of
 which are Sutron Tide Stations, in addition to the seven
 long-term NOAA NOS NWLON stations established
 and operated by NOS as part of its National Water                       TEMPERATURE. Additional stations provide WATER
 Level Observation Network.                                              CURRENT, SALINITY, PH, and DISSOLVED OXYGEN DATA.
 In addition to WATER LEVEL DATA, most stations                          This water level and wind data are collected at six-minute
 provide supplemental data such as WIND SPEED                            intervals (0.1 hours), all other data are collected at some
 and DIRECTION, AIR TEMPERATURE, and WATER                               multiple of the standaed of 6 minutes.

                                             21300 RIDGETOP CIRCLE                 STERLING, VA 20166            WWW.SUTRON.COM
                                             (703)406-2800                         (703)406-2801 FAX             SALES@SUTRON.COM
In order to manage this large volume of data, a
database management system has been developed
which supplies data to sponsors and the public via the
Internet at the Division of Nearshore Research Web
site @ and through voice
telephone response systems.
Several related projects have been established based
on the data collection and management systems
developed for TCOON. These projects include
      Corpus Christi
      5 near-real-time water quality monitoring stations
      measuring parameters such as salinity, dissolved
      oxygen, and PH.
      SYSTEM - Port of Corpus Chrisiti
      A system to provide the Port of Corpus Christi with
      real-time navigation data such as water level,
      water currents, and meteorological conditions
      Provides meteorological and wave data to help
      local forecasters create marine condition forecasts.
      SURVEYING AND SCIENCE has developed
      one of the most sophisticated water level and
      environmental observation systems available.
      The system provides data used for hurricane
      preparedness, littoral boundary definition, water
      quality monitoring, real-time water level and
      meteorological monitoring for marine safety, and
      recreational users of the bays and estuaries of           as WATER CURRENT, SALINITY, & DISSOLVED OXYGEN are
      South Texas.                                              expensive to install and maintain, thus they are deployed at
      THE HIGH QUALITY OF THE DATA provides the                 a limited number of sites. The presence of buildings or other
      potential to expand research initiatives into oil         physical structures near a data collection station may prevent
      spill prevention and response, eustatic sea level,        accurate wind measurements, so wind is not measured at
      and shoreline subsidence monitoring, and a host of        these stations.
      environmental studies related to water quality and        The original NGWLM used the highly reliable Sutron 9000
      circulation                                               datalogger. Although many are still in operation over 20
                                                                years later, they are being replaced with Sutron’s new Tide
STATION CONFIGURATIONS                                          Stations using Sutron’s state-of-the-art Xpert Datalogger.
Several different CBI-DNR data collection stations and
systems collect coastal measurements, however, each             SENSOR SAMPLER
station consists of...
                                                                    Acoustic transducers for measuring water elevations
    Sensors to measure various environmental
                                                                    Wind anemometers for wind speed and direction
                                                                    Acoustic doppler current profiling instruments
    A data collection computer for controlling the
     sensors and temporarily storing data on-site                   Multiparameter water-quality probes
                                                                    Water current
    One or more telemetry devices for retrieving data
     from the station and transmitting it to headquarters           Salinity
     -including satellite, spread-spectrum packet radio,            Dissolved oxygen
     & telephone modem                                              Air & water temperatures
    Solar panels and batteries for power                           pH
Each station’s instrument configuration is determined               Barometric pressure
by the purpose of the station and local conditions. For
                                                                    Turbidity
example, instruments used to measure parameters such
                                                                    Air gap

                                             21300 RIDGETOP CIRCLE         STERLING, VA 20166             WWW.SUTRON.COM
                                             (703)406-2800                 (703)406-2801 FAX              SALES@SUTRON.COM
CBI-DNR’s operations staff performs routine maintenance
and calibration of each sensor.
All the stations in TCOON and related projects measure
environmental parameters at a multiple of six-minute
intervals. For example, water-level measurements are
taken every six minutes, while other measurements such as
salinity or barometric pressure may be made every thirty
or sixty minutes. The data are stored on-site in the data
collection computer and then transmitted to CBI-DNR by
one or more communications channels including satellite,
spread-spectrum packet radio, or telephone modem.
The choice of communications depends on availability
of telephone or radio connections and the degree of
need for real-time observations. For example, stations
in the Corpus Christi Real-Time Navigation System and
Freeport FlowInfo System use line-of-sight packet radios
to allow for frequent acquisition of data from the on-site
data collection computers-typically downloading new
data once every twelve minutes. At stations where radio
or telephone connections are not available, satellite
transmissions are used to transmit data at hourly or
three-hourly intervals. Thus, the time from measurement to
acquisition at CBI depends on the measurement interval
and the communications medium used. The data arrive at
CBI somewhere between six minutes and six hours after
measurement.                                                   DATA APPLICATIONS
INTEGRATED SUBSYSTEMS                                          TIDAL DATUM
                                                               The need to reduce to a common level depth soundings taken
1.   The “data acquisition” subsystem retrieves the data       at different stages of the tide during hydrographic surveys
     from network sensor packages and observation              spawned water level datums. Increasingly, the need of
     platforms. Because of the wide variety of                 the land surveyor uses this data to determine waterfront
     communications links and platform hardware used for       boundaries by tidal definition. However, at many locations
     measuring environmental data, the data acquisition        the astronomical tide is often masked by local meteorological
     subsystem is actually a small number of independent       conditions and long-term trends in the Gulf of Mexico, which
                                                               makes standard procedures difficult to apply and increases
     software modules that implement communication
                                                               the degree of labor required to produce a tidal datum. As
     with specific platform hardware and/or specific             a result, CBI-DNR has developed Web-based software that
     communications media. As new platform hardware            automatically computes datums from water-level data stored
     configurations or communications channels are added        in the CBI-DNR database.
     to the observation network, it is easy to develop the
     corresponding acquisition component and integrate it      LITTORAL BOUNDARY DEFINITION
     into the existing acquisition subsystem.                  Tidal datums are used to determine littoral boundaries
                                                               between submerged and privately owned lands. Bench-mark
2.   The “data archival/decoding” subsystem is                 leveling is performed annually at each TCOON station to
     responsible for maintaining an archive of the             ensure station stability and to relate water-level information
     source data and converting the raw data files into         to reference points on land. CBI-DNR publishes bench-mark
     a standardized interchange format for storage in          elevation sheets on its Web site that indicate the elevation of
     the MySQL database. The clerk and its decoder             bench marks above tidal datum planes; surveyors then use
     programs also perform quality-control data checks         these elevations for precisely locating littoral boundaries.
     to prevent erroneous data from entering the online        .
     database system.                                          NAVIGATION AND MARINE SAFETY
3.   Any further corrections or adjustments to the data        TCOON data has great value to navigation interests.
     are recorded in MySQL database as separate                Information provided by TCOON is augmented with current
     “correction” records and automatically applied to         meter data from other systems to provide near-real-time
                                                               reports of conditions in heavily trafficked shipping channels in
4.   The “data extraction” subsystem also provides an
     interface to allow users to query the observation

                                            21300 RIDGETOP CIRCLE          STERLING, VA 20166             WWW.SUTRON.COM
                                            (703)406-2800                  (703)406-2801 FAX              SALES@SUTRON.COM
several Texas ports. One such system is the Corpus Christi
Real-Time Navigation System sponsored by the Port of
Corpus Christi. CBI-DNR has installed acoustic doppler
current profiler instruments at key locations along the
Corpus Christi Ship Channel; near-real-time data from
these instruments and TCOON platforms allow ship pilots
to better navigate large vessels in and out of Corpus
Christi Bay. Pilots simply call a local telephone number to
receive a digitized voice summary of the latest current,
water-level, and meteorological conditions for the stations
in Corpus Christi Bay.
The NOS-sponsored Houston/Galveston Physical
Oceanographic Real-Time System (PORTS) makes similar
use of TCOON stations to assist pilots in Galveston Bay,
and the Freeport FlowInfo system monitors currents and
water levels for Port Freeport.

The United States Army Corps of Engineers Galveston
District uses TCOON data to plan and execute its
maintenance of Federally authorized channels and
waterways along the Texas coast, including ship channels
and the Gulf Intracoastal Waterway. Navigation channel
maintenance and operation activities require knowledge
of water level, tidal datums, and other environmental
parameters before, during, and after dredging.                  station in CBI-DNR’s observation networks. In 1993, WindInfo
                                                                received over 60,000 calls from windsurfers, sailors,
OIL-SPILL RESPONSE                                              fishermen, and other recreational enthusiasts desiring near-
A significant application of TCOON data involves                real-time information along the coast.
developing circulation and oil-spill trajectory models.
Each night, the latest water level measurements are             FUTURE
automatically downloaded from the TCOON Web site,               A collaboration of Texas A&M University researchers are
and used to generate a new set of model calculations that       investigating neural-network-based models to make short-
predict currents for the following three days. These current    term predictions of water level and currents along the Texas
predictions are input into a trajectory model that predicts     Gulf coast and to make real-time predictions of storm surge
where oil will move if a spill occurs. Oil-spill emergency      of tropical storms. The new models will use the real-time
response teams are deployed based on these models to            and historical observations from TCOON coupled with wind
deploy to minimize a spill’s impact.                            forecasts from the National Weather Service to predict
                                                                water elevations and currents in a 1 to 30-hour time horizon,
HURRICANE AND STORM PREPARATION                                 necessary for navigation, oil spill response, and marine
An initial and ongoing application of CBI-DNR’s tide            operations. Preliminary results indicate that for Texas coastal
stations has been to provide timely water-level data to         waters a neural-network-based model can significantly
assist the local Corpus Christi National Weather Service        outperform forecasts of water levels based on traditional
Office, and thus the entire community, with hurricane or        harmonic analysis methods.
storm preparedness regarding inundation of low-lying            The Department of Computing and Mathematical Sciences at
areas along the coast, road closures, and evacuations.          A&M-CC is developing a Scientific Visualization Laboratory
The local National Weather Service Office seamlessly            which will provide facilities for interactive visualization
integrates near-real-time observations into its weather         and investigation of the multidimensional multivariate data
forecasting systems to better predict the effects of            gathered by the TCOON system.
an incoming storm. Because the A&M-CC campus is
evacuated if a hurricane threatens the area, CBI-DNR            TCOON plans to expand its data management system to
can move its data-collection system to local emergency          include environmental observation networks from other
operations centers to continue collection and distribution of   states and organizations. Preliminary efforts to integrate
TCOON data during the storm event.                              data from the Texas Automated Buoy System and the
                                                                University of Southern Florida’s Coastal Ocean Monitoring
RECREATION & BENEFIT TO THE GENERAL PUBLIC                      and Prediction System have been successful. A centralized
A particularly successful application of TCOON data has         data management system that can accommodate multiple
been CBI-DNR’s WindInfo system. WindInfo is a telephone         observation networks will reduce the need to redevelop
voice-response system (361-992-WIND) that provides              systems such as TCOON and allow better communication
the general public with wind and water conditions for any       among the producers and consumers of environmental data.

                                             21300 RIDGETOP CIRCLE         STERLING, VA 20166              WWW.SUTRON.COM
                                             (703)406-2800                 (703)406-2801 FAX               SALES@SUTRON.COM

       University of Puerto Rico, Mayaguez
       In 2005, the University received a grant from
       FEMA to develop an island-wide tsunami
       warning network. The network was to be
       based on NOAA-NOS compliant tide gages.
       NOAA-NOS was to supply 6 tide stations,
       and the University was to purchase 6 more.
       In addition, the University was to purchase a
       GOES Satellite ground station so that data
       could be received directly.
       As of August, 2007, the system is nearing
       completion. Sutron has installed the ground
       station at Mayaguez, and five of the six
       University stations have been installed. NOAA
       has completed the installation of their stations.
       Puerto Rico now has the highest density (in
       terms of tide monitors per mile of shore line) in
       the world.
       Sutron’s part of the Tsunami Warning System
       •    Supply and installation of the GOES
            ground station at Mayaguez
       •    Site investigations for all six University
            tide stations
       •    Supply and installation assistance for the
            six University tide stations
       •    Supply all of the GOES decoding and
            database software for the GOES ground
       The tide stations supplied and installed by
       Sutron are fully NOAA-NOS compliant,
       with redundant electronics and primary and
       backup water level sensors. All of the stations
       also include a full complement of weather
       instruments (wind speed and direction, air
       temperature, barometric pressure).
       Sutron has now begun to work with other
       localities in Puerto Rico to add local Tsunami
       detection and warning.

                                     21300 RIDGETOP CIRCLE   STERLING, VA 20166   WWW.SUTRON.COM
                                     (703)406-2800           (703)406-2801 FAX    SALES@SUTRON.COM


     The University of Hawaii operates a large pro-
     gram to monitor sea level changes around the
     Pacific rim. The program extends as far west
     as Kenya in East Africa. Sea level stations are
     located in extremely remote areas, and are
     often visited only once every two years.
     The University of Hawaii Sea Level Center col-
     ects, processes, and distributes tide gauge data
     from around the world in support of CLIVAR,
     GLOSS, GCOS, GODAE and other climate
     research activities. The measurements are
     used for the evaluation of numerical models,
     joint analyses with satellite altimeter datasets,
     the calibration of altimeter data, the produc-
     tion of oceanograhic products and research           Kenya: Lamu Tide Gauge
     on interannual to decadal climate fluctuations.
     Also, in support of satellite altimeter calibra-     The Lamu gauge is a float type installed on
     tion and validation and for absolute sea level       a stilling well. It was installed in 1996 by the
     rise monitoring, the UHSLC and the Pacific GPS        University of Hawaii Sea Level Centre (UHSLC).
     Facility maintain continuous GPS systems at 7        The station is equipped with modern data
     tide gauge stations.                                 loggers, measuring sea level every minute and
                                                          storing on diskette at 15 minutes interval. In
     U of H used a competitor’s data logger until         addition, the
     2004. At that time, Sturon introduced them to        Lamu tide gauge
     our Satlink2 GOES Transmitter/Logger. The            is equipped with
     Satlink2 met most of their needs, but did not        a satellite data
     format the data transmissions in the way need-       transfer device
     ed and also did not perform the same type of         to enable real
     data averaging they had been using.                  time access to
                                                          data. In August
     Sutron assigned a Senior R&D Engineer to the
                                                          2006, the Lamu
     program, and over the course of three months
                                                          tide gauge sta-
     developed new firmware for the Satlink to
                                                          tion also under-
     meet U of H requirements. Satlink is now the
                                                          went a major
     standard transmitter for the sea level monitor-
                                                          overhaul of
     ing program.

                                  21300 RIDGETOP CIRCLE      STERLING, VA 20166          WWW.SUTRON.COM
                                  (703)406-2800              (703)406-2801 FAX           SALES@SUTRON.COM
EARLY WARNING SYSTEM                                                                                                 April 2007
Project to measure water levels at 3 points along Kenya’s coast for early warning
of tsunamis & data collection crucial to monitor & predict meteorological & climatic
    OWNER:             Kenya Meteorological Department
    PROJECT:           Kenya Tide Station System
    EQUIPMENT:         3 RTUs, 1 Central Base Station
    DATES:             2006-2007 with on-going support
    CONTACT:           Dr. Joseph Mukabana
                       Director, Kenya Meteorological
    VALUE:             $100,000
    SENSORS:           Air Temperature, Relative Humidity,
                       Barometric Pressure, Wind Speed,
                       Wind Direction, water level, water
    TELEMETRY:         Satellite transmitter. GSM modems
                       to transfer data to Central Station

The Kenya Met Department awarded to Sutron a contract
to design, build, and install a real-time network of three
Automatic Tidal & Weather Monitoring Stations located
on existing piers to ensure sustainable use and protection
of their coastal waters. Moreover, the establishment of an
early warning system using the tide stations will decrease the
impact of tsunamis and other related maritime disasters (e.g.
tropical cyclone, oil spills, marine accidents, store surges and
strong ocean waves, etc)

Modern technologies in ocean monitoring and new
developments in ocean climate modeling require that the
data be accurate and the system be durableto maximize the
System’s ability for early detection of tsunamis and weather
and climate modelling activities, co-ordinated through the
Kenya Meteorological Department of the Western Indian
Ocean Region.

The ocean observation platforms consist of instruments used
for observation of sea level changes and for measurement
of meteorological and oceanographic parameters like sea
surface temperature, currents, surface wind, upper ocean
temperature, salinity and velocity.

The automatic tidal and weather monitoring stations have the           primary telemetry, backup telemetry (PSTN), and a
following:                                                             Data processing center with software and PC for instant,
                                                                       24-7 access to tsunami warning and water level data.
    Meet International as well as NOAA/NOS standards for
     primary tide gages.                                              A full compliment of weather instruments to extend the
                                                                       capability of the stations to support other emergencies
    Communicate through METEOSAT Second Generation                    such as storm surge detection and monitoring.
     (MSG) satellite with data reception at GTS center
     located in Kenya                                                 All civil works (excluding shelters).
    Include all necessary software for recovering and                Installation
     transmitting data from METEOSAT via the GTS center               Training
     and displaying the tide level.                                   Software and PC to manually download and decode
    Components to interface with GTS.                                 satellite data via the Internet.
    NOS-certified tide stations with Meteosat satellite              After sales support using the local in-county agent.

                                               21300 RIDGETOP CIRCLE          STERLING, VA 20166               WWW.SUTRON.COM
                                               (703)406-2800                  (703)406-2801 FAX                SALES@SUTRON.COM
EARLY WARNING SYSTEM                                                              April 2007

                                                                   Main Station


                                                                   Aquatrak Water
                                                                   Level Sensor

                                                                   Water Quality

      XConnect Dataview
             by Stations

                      21300 RIDGETOP CIRCLE   STERLING, VA 20166           WWW.SUTRON.COM
                      (703)406-2800           (703)406-2801 FAX            SALES@SUTRON.COM

   Sutron is proud of our record as the supplier
   of NOAA tide gages. The program is ongoing,
   and NOAA has awarded Sturon three Small
   Business Innovative Research (SBIR) contracts
   to enhance the tide program. The SBIRs cover
   an improved dual-orifice bubbler gage, and
   advanced hardware to take advantage of
   the little known or used DCPI two-way feature
   of the GOES Satellites. The latter will allow
   NOAA to send configuration commands to
   GOES DCPs for the first time.
   The following individuals may be contacted
   concerning Sutron’s activities with NOAA/NOS:
   Mr. Tom Mero
   NOAA Headquarters
   Silver Spring, MD
   (301) 713-2897 X145

   Mr. Warren Krug
   NOS Field Operations
   Chesapeake, VA
   757-647-4624 cell

   Mr. Mark Bushnell
   NOS Field Operations
   Chesapeake, VA
   Mr. Phil Libraro
   NOS Field Operations
   Chesapeake, VA
   757-635-4550 cell

   Sutron also works closely with the Texas A&M
   tides program (TCOONS). TCOONS is an of-
   ficially accepted part of the NOAA NWLON
   network. The following individual may be
   Mr. James Rizzo
   University of Texas A&M,
   Corpus Christi, TX
    (361) 825-5758
    (361) 549-5120 cell

                             21300 RIDGETOP CIRCLE   STERLING, VA 20166   WWW.SUTRON.COM
                             (703)406-2800           (703)406-2801 FAX    SALES@SUTRON.COM

To top