Topic/Overview Dynamic Ocean Topography (DOT), also known as Mean Dynamic Topography Assumed background understanding of ocean geophysics, including tides and currents, and understanding of geodesy, especially difference between ellipsoid and geoid representations of earth Lesson Objectives Students will be able to… Explain what DOT is, and the driving forces of DOT Derive DOT from tidal …
Category: GGE6022
Advanced Topics in Ocean Mapping
Dynamic Ocean Topography in a Flat Earth Perspective
Beware the certain science. I am as bad as many (even in this series of posts) of taking the shorthand of describing a scientific theory in certain terms despite the fact that all theories have some degree of uncertainty (even if relatively small). For our mutual benefit let me state that scientific theory isn’t just …
What is new in dynamic ocean topography?
Dynamic ocean topography (DOT) seems fairly observed, understood, and modeled. There are several satellites observing DOT in real time (OSTM/Jason-2 and Jason 3). There are numerous models (see several listed in the introductory post) for understanding long term trends and near real time DOT. So what does this leave for improvement and future work? One …
A Model of Dynamic Ocean Topography
In the last few posts I’ve introduced you to the concept of dynamic ocean topography (DOT) and what causes it. In this post I’d like to introduce you to one of the global models or estimates of mean DOT and explain a little about how it was made. DOT can change daily which makes it …
Inverse Barometric Effect: A Contribution to Dynamic Ocean Topography
One of the topics I omitted in the first post of this series was the inverse barometric (IB) effect. Think of someone jumping on the side of a waterbed, their mass adds pressure to the water which in turn causes it to flow to places where there is less pressure, like the other side of …
Dynamic Ocean Topography: An Introduction
We generally think of the average height of the ocean as being a height of zero. This is because it can be useful to know how far something is above or below sea level, which is a vertical datum. It is a convenient reference height that is easy to access on the ocean or near …
GGE6022 – Advanced Topics in Ocean Mapping
Over the next few months I will be making several post about an advanced topic in the ocean mapping domain for a course with the University of New Brunswick. To follow along the category label GGE6022 can be used. Other Posts in the Series GGE6022 – Advanced Topics in Ocean Mapping (this post) Dynamic Ocean …