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OCENS GRIB Explorer



Now any mariner from day sailors to coastal cruisers and fishermen can use the weather and ocean charts offered by GRIB data. Surface pressure, wind, waves, swell, cloud cover, precipitation, sea temperature, currents, salinity, even sub-surface temperatures and mixed layer depths are available in GRIB format. Because GRIB data files are not standard graphics files, many graphics and/or navigation programs cannot open GRIB files. In the past, GRIB data was available only to ocean racers, shipping lines, and routing companies; those running expensive software packages. Not Anymore. Unleash the power of GRIB weather data with this easy-to-use GRIB viewer.

GRIB Explorer is a sophisticated GRIB viewer with a simple user interface. Here are a few of its features:

  • Open and view GRIB data in full color.
  • Customize the display to meet your needs.
  • View data, like 500mb and sea surface heights, in 3D.
  • Layer multiple weather parameters for enhanced analysis.
  • View cursor position at lat and lon, and weather data.
  • Easily add graphs of weather variables.
  • Zoom to specific locations and view in high detail.
  • Animate multiple GRIB products to gain an intuitive feel of upcoming weather and ocean conditions.
  • Supports GPS input allowing your vessel's position to display on the screen.

    AND, GRIB Explorer seamlessly integrates OCENS WeatherNet service with access to over 20,000 GRIB files available for quick and convenient download.

    GRIB Explorer for Viewing GRIB Weather Files

    If you are unfamiliar with GRIB, read What's a GRIB a short story on GRIB files.

    Why GRIB Data?
    Is it Hard to Use?
    How Do I Access GRIB Data?
    What GRIB Types are Supported?


    Why GRIB Data?


    GRIB data is special because of its size, information content, and versatility of use. Generated by weather and ocean models operating on national, regional and sometimes global scales, GRIB files associate an environmental variable with a geographic position. Because the resulting file consists of just a collection of these points they are extremely small and thus readily transferred over bandwidth limited satcoms, cell phones and other wireless devices. The information content of GRIB data is awe-inspiring. Almost every conceivable weather and ocean data variable is available in GRIB format. Surface pressure, wind, waves, swell, cloud cover, precipitation, sea temperature, currents, salinity, even sub-surface temperatures and mixed layer depths are available in GRIB format. In many cases, spatial resolutions reach as low as to 0.1 degree lat/lon and are available on a global basis. The weather variables are forecasted out to 120 hours and longer so it is possible to use the GRIB data to view weather anticipated several days in advance.


    Is GRIB Explorer Hard to Use?


    GRIB Explorer has a simple, easy-to-use graphical user interface. Double-click on the GRIB file you have downloaded and it will instantly display the file in a very dynamic graphical format. The display can easily be changed to show contours lines, color filled contours, arrows or wind barbs, and even data point values. All of this allows relevant weather or ocean features to become much more evident.


    How Do I Access GRIB Data?


    GRIB files are available through many different resources, however, we highly recommend using OCENS WeatherNet to access GRIB files. With over 20,000 GRIB files, WeatherNet carries the world's largest collection of GRIB weather and ocean data. Not only is the collection robust, but the WeatherNet delivery service drops those files onto your computer just seconds after your request through any satcom, cell phone or wireless device. Once delivered, the synergy between OCENS WeatherNet and OCENS GRIB Explorer is clearly evident. After the GRIB files are downloaded via WeatherNet, GRIB Explorer will launch and display your downloaded GRIB data. If you've downloaded a point forecast for a given GRIB variable, that file is displayed by itself. But if you've downloaded a series of forecasts (i.e. the analysis of present conditions out to 120 hours), GRIB Explorer kicks into animation mode automatically to put the weather in motion like you've never seen before.


    What GRIB Types are Supported?


    GRIB Explorer supports all the GRIB types available in WeatherNet. Here is a summary of the GRIB types that can be viewed:
    • NOAA (AVN) - world coverage at 1x1 degree resolution: surface wind, surface pressure, 500 mb wind, 500 mb contours, cloud cover, precipitation, surface temperature.
    • NAVY (NOGAPS/WW3) - world coverage at 1x1 degree resolution including the Med surface wind, surface pressure, 500 mb wind, 500 mb contours, cloud cover, precipitation, surface temperature primary wave, secondary wave, wind wave (Wave data consists of wave period, direction, and mean height).
    • NAVY (NLOM) - world overage at 1/16 x 1/16 degree resolution and 1/4 x 1/4 degree resolution surface currents, sea surface temperature, sea surface height, mixed layer depth.
    • NAVY (OTIS) - world coverage at 1x1 degree resolution sub-surface temperatures to 5000m, mixed layer depth
    • NOAA ( WW3) - world coverage at 1.25x1.25 degree resolution excluding the Med surface winds (2m), primary wave height, direction, and period.
    • NOAA (COFS) - East Coast US at 0.1x0.1 degree resolution currents from surface to 5000m, sea temp from surface to 5000m, salinity to 5000m.
    • THEYR - High resolution GRIB files for Med, North and Mid Atlantic, Caribbean, Gulf of Mexico, East and West coast US and Alaska at 1/4 degree resolution, surface wind, surface pressure, 500 mb wind, 500 mb contours, precipitation, and surface temperature.



  • Purchase GRIB Explorer Software - sold separately

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    Purchase our most popular Marine Weather Package with GRIB Explorer included Comprehensive maritime weather and ocean resource plus the power of GRIB at your fingertips. For Windows OS systems.


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    FREE 3-day limited-function trial version. Registration Required.