1. First, a question about the sense of EOF's:


  1. How many values (numbers) are in your input data array? 144 x 240 (longitude versus time) *will need to transpose this...
  2. How many values (numbers) are needed to build each term on the left? 144 for EOFs and 240 for PCs
  3. If 5 EOFs capture most of the data's variance, how much smaller (in the above sense) is the EOFxPC representation compared to the full data set? 144 x 240 - (144+240) x 5


2. Read in your field1 (U-wind 1000).


Please see the attached code if you are struggling with figuring out what to plot. You will need this, if you don't already have it, to run my code:

eofpc1.jpg
eofpc2.jpg
eofpc3.jpg
eofpc4.jpg


origrecon.jpg
trunc1-2.jpg
trunc3-4.jpg