Greetings,
The COMET Program is pleased to announce the publication of the new lesson, "Sea Level Change: Datums and Terminology". This lesson addresses how sea level is determined and applied. It starts with a general discussion of the surfaces that form the basis of measurement, called datums, then looks more closely at the vertical datums that form the basis of height measurements. We cover tidal datums in more depth, including the different datums, their extent, period of record (called a tidal epoch), and common applications. We conclude with a look at some data resources for tidal datums and sea level trends.
This lesson is sponsored by the Climate Change and Water Working Group (http://www.ccawwg.us/), with specific funding from the U.S. Army Corps of Engineers. The lesson will be useful for those working in the fields of coastal planning and infrastructure development. Please follow this link to the MetEd description page that provides additional information and a link to begin the lesson: Sea Level Change: Datums and Terminology .
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We welcome any comments or questions you may have regarding the content, instructional approach, or use of this lesson. Please e-mail your comments or questions to Alan Bol (alanbol at ucar.edu).
Sincerely,
Dr. Rich Jeffries
Director, COMET