Singular Value Decomposition North Atlantic SST

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Presentation transcript:

Singular Value Decomposition North Atlantic SST What spatial patterns exist in Labrador SST anomalies? What about North Atlantic SST anomalies? How much variance of these regions do these EOFs explain? 04.22.2008 Angela Fritz

Data Description Labrador Sea SST North Atlantic SST Combination of SEAFLUX SST and Reynolds SST Originally 3 hourly, averaged into monthly 1988 – 2000 144 time steps 50N – 75N, 70W – 40W Every 0.25 degrees North Atlantic SST Reconstructed global sea surface temperature based on COADS data Monthly Dec 1870 through Feb 2004 402 time steps 0 – 80N, 100W – 0 Every 2 degrees 04.22.2008 Angela Fritz

Method Remove the means in data set Construct a matrix where each column is a point in the domain and each row in the column is a time step Remove the columns where there is missing data (NaNs) Perform the SVD analysis To remap the EOFs, replace the missing data in the new grids 04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz

04.22.2008 Angela Fritz