Unified Tidal Analysis and Prediction
Using the "UTide" Matlab Functions
September 2011
- Designed specifically to handle record times that are irregularly distributed and/or gappy.
- Suitable for multi-year analyses: accurate nodal/satellite corrections are not limited to record lengths shorter than 1-2 years.
- Can provide easy-to-use and comprehensive diagnostics to aid the constituent selection process.
- Handles sea level (amplitude and phase), or currents (current ellipse parameters), with similar syntax.
- Generates confidence intervals based on spectra (FFT for regular times, Lomb-Scargle for irregular times) of the residuals between the raw input and the harmonic fit.
- Incorporates the robust L1/L2 solution method to minimize influence of outliers.
- Enables analysis of groups of time sequences (such as records from an array of instruments, or from a group of model gridpoints) with one m-function call.
- Builds on, and integrates in to a common framework, the t_tide (Pawlowicz et al 2002), r_t_tide (Leffler and Jay 2009), and "versatile" (Foreman et al 2009) approaches.
- Flexible interface with mix-and-match choices of analysis configurations accessible by arguments to m-functions.
- Download the m-files,
and the technical report / user's manual describing them, from any of these
three URLs:
- URI GSO PO ftp server: UTideCurrentVersion.zip
- File Exchange on Matlab Central: http://www.mathworks.com/matlabcentral/fileexchange/46523--utide--unified-tidal-analysis-and-prediction-functions
- ResearchGate (m-files in "Supplementary Resources" at bottom): https://www.researchgate.net/publication/280722790_Unified_tidal_analysis_and_prediction_using_the_UTide_Matlab_functions
Technical Report / User's Manual:
Codiga,
D.L., 2011. Unified Tidal Analysis and Prediction Using the UTide
Matlab Functions. Technical Report 2011-01.
To reach Dan Codiga with questions, send email to "dcodiga at uri.edu" (the old email address, "d.codiga at gso.uri.edu", has been retired).
Finally, for a python-based adaptation of UTide
under development by colleagues, see this:
https://github.com/wesleybowman/UTide