GOOS Caribbean CoastWatch Altimeter Applet Usage
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Position the mouse over each component on the image below to learn more about it.

Check to access GTS dataSelect type of GTS platformOverlay code from the World Meteorological OrganizationNumber of days before date selected to retrieve GTS dataBack to previous imageUse the pointer to select the area of interestGeographical coordinates of area selectedUse this map to select alternative zonesSelect date. Maps will be created using a ten-day period data ending in this dateOverlay altimeter data positionsDisplay contours on SHA and current maps. Interval is 10 cm for SHA and 50cm for dynamic heights, and the zero contour is always displayed in redMask depths shallower than the selected oneDisplay geostrophic current vectorsDisplay scalar velocity field of geostrophic flowSelect type of outputSend selected parameters to the server and wait for responseClimatology to be used as mean dynamic surface to estimate currents

  This interface displays near-real time sea height anomalies (SHA) derived from JASON-1, TOPEX, ERS-2, ENVISAT and GFO altimeters, processed by the NRL site at the Stennis Space Center, and GTS data provided by NOAA/NOS. The maps are generated by interpolating SHA data corresponding to a 10-day period up to the selected date. The SHA is the default parameter displayed, with contour values drawn every 10 cm. The dynamic height maps are displayed by activating the field labelled 'currents', with contour values drawn every 50 cm of dynamic height.  The data spatial distribution can be observed by overlaying the data points used to generate the SHA map. To identify the data source, the ground-track for each sensor is displayed with different colors: blue-JASON-1,black-TOPEX, red-ERS-2, brown-ENVISAT, pink-GFO.

Three different Mean Surface Heights are available:

The GTS controls are located in the applet's upper area. Four types of GTS headers are routinely processed and ingested into the database: Using the 'Days' scrollbar, you can select the number of days prior to the chosen ending date as the temporal range to extract the GTS data. The oldest measurement for each WMO code is displayed as a square. The output type is selected by using a drop-down list which comes with the 'Graphics' default.

You can click and drag the mouse on either of the displayed maps to select the area of interest. The button labelled 'Go!' launches the CGI routine that generates the results.

  Thanks to Alan Fox for providing the OCCAM mean surfaces.
  This applet is based on the TMAPapplet developed by Jonathan Callahan at NOAA/PMEL.

Please, address your questions or comments to Joaquin A. Trinanes

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