How many values (numbers) are in your input data array? 144 x 240
How many values (numbers) are needed to build each term on the left? 144 for EOFs, 240 for PCs
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? 144x240 - 5x240
2. Read in your field1 (let's call it x again). U-1000mb wind
1. First, a question about the sense of EOF's:
2. Read in your field1 (let's call it x again). U-1000mb wind