National Oceanic and Atmospheric Administration
Chesapeake Bay Interpretive Buoy System

Help menu:
  • First step, choose either one of the buoys, or the Shallop, then click, 'Create Graph' to find which parameters are available for that platform.

  • Second step, choose a suitable date range, and parameters for each axis.

  • Third step, click the 'Create Graph' button.

  • Fourth step, look for patterns or correlations in the data. for example, there might be a relation between air temperature and water temperature, moreover, one might tend to increase as the other does.

  • Only a month (31 days) of data can be plotted at a time. Long term trend plots will be available soon.

  • Only the X axis can plot time

  • Any gaps in the data when plotting against time occur due to either data that is known to be bad and therefore removed, or the buoy did not take that data reading.

  • If no graph is generated, try choosing either a different date range or parameter, perhaps there is no data for the time range you have chosen.

  • The Shallop is a boat that is retracing Captain John Smith's voyage around the Chesapeake Bay LINK HERE.

  • By default the graph displays the most recent 24 hours of data collected. This ensures that the most recent data can be viewed.

  • To start over, click the 'Reset Page' link in the top right of the graphing window.

  • Once a graph of interest has been created, click the graph to open in a separate window for printing or saving. Once the graph is opened in a new window, the URL can be copied into an email or bookmark for sharing with others.

  • The 'Start' and 'Stop' fields in the menu can be either date based YYYY-MM-DD (Year, Month, Day) For example: 2007-12-29, or Date/Time based YYYY-MM-DD HH:MM:SS (Year, Month, Day, Hour, Minute Second) For example: 2007-12-29 12:59:59

  • To display the option of choosing time in the pop-up menu, select the 'Time:' checkbox before clicking the 'Create Graph' button.

  • Any time the same parameter is chosen for both axis, the graph will consist of a straight line from the origin to the top right of the graph