SIO 221C Data Analysis Laboratory

Projects

• Time series: spectra, uncertainties, and coherence
  • Salinity Spiking (Rudnick)
  • Filtering and Assessing Resolution (Gille)
  • Wind-Driven Currents (Rudnick; Note: as an alternative to the FASINEX data suggested in the project, you might consider using high-frequency data from the TOGA/TAO array (available here, or see me). For example, 125W, 8S is well instrumented, or rewrite the problem for the Equator, e.g. 110W.))
  • Wind-Driven Geostrophic Currents (Gille)
• Empirical Orthogonal Functions
  • Empirical Orthogonal Functions (Rudnick)
  • EOFs with Missing Data (Rudnick)
• Objective Mapping
  • Objective Mapping (Rudnick)
  • Objective Mapping (with Anisotropic Decorrelation Functions) (Gille)
  • Geostrophic Velocity (Rudnick)
• Other
  • Complex Demodulation (Rudnick)
  • Wavelets (Rudnick)
  • Box Inverse (Rudnick)
  • Probability Density Functions (Gille)

Data

• FASINEX Mooring Data
• Subduction SeaSoar/ADCP Data
• COADS SST Data
• Raw SeaSoar CTD Data (for salinity spiking) or Extended SeaSoar record for pumped and unpumped sensor
• Labrador Sea Bottle Data
• NCEP Reanalysis Wind Data
• ALACE Floats from the Drake Passage area
• Bottom Pressure and Winds from the Drake Passage area
• XCTD Profiles from Drake Passage
• XCTD Profiles from the North Pacific

Tools

• NetCDF for Matlab. (And some tips for using netcdf.) This is somewhat obsolete, but there are now other options, including Matlab's built in functions.
• Some matlab routines posted by Ian Eisenman, including ncload2.m, which will load all variables in a netcdf file.
• grabcdf.m
• Thermodynamic Equation of Seawater - 2010 sea water toolbox, McDougall and Barker (2011). (If you look at older work, you might see reference to the CSIRO Seawater Toolkit.)
• cptcmap.m: Function to create Matlab color tables using palettes created for the Generic Mapping Tools (GMT).
• stick.m
• arrow.m
• m_map mapping package for use in Matlab, developed by Rich Pawlowicz (UBC).
• Mathworks file exchange for user contributed Matlab scripts (suggested by Gabriela Chavez)
• NetCDF Operators (NCO)
• Comments on using LaTeX to write manuscripts (plus a short guide on equations from the American Mathematical Society web site).
• A short guide to LaTeX
• angsep.m computes distance between two geographic points in degrees
• significance.m simple routine for computing statistical significance levels for correlation coefficients. For example, for 8 degrees of freedom, the 95% significance level would be significance(8,.95), which is 0.693.
• The listings latex package for including programming source code in your latex file. Specify \usepackage{listings} to include the package and \lstinputlisting[language=Matlab]{filename.m} to specify inclusion of a Matlab file named filename.m.

Lecture Notes

• Error propagation (September 29)
• A refresher on spectra (review material for October 1)
• Edge effects in spectra: detrending, windowing and pre-whitening (October 1)
• Comments on spectra and spectral error bars (review material for October 3)
• Coherence (review material for October 8)
• Suggestions for clear writing (October 8)
• Filters (advance material for October 13)
• Details for EOFs: Uncertainties, alternative methods, propagating modes (advance material for October 27)
• Choosing color maps (October 27)
• Idealized examples for empirical orthogonal functions (October 27)
• Clarifying definitions for EOFs with missing data (October 29) (and Alan Seltzer's diagrams)
• Estimating degrees of freedom from autocorrelations (November 4, not fully discussed)
• Strategies for coping with large covariance matrices in objective mapping problems. (November 4,5)
• Spectral examples for discussion from recent literature (November 10)
• Popular press readings on statistics (November 19)

Sarah Gille's Home Page

Daniel L. Rudnick's Home Page