[ncl-talk] S1 skill score

[Andrew Kren - NOAA Affiliate]

Dear ncl-talk,

I have a question about calculating a metric. I am trying to calculate the
S1 skill score (http://www.cawcr.gov.au/projects/verification/), which uses
differences between forecast and observed adjacent points. I will be using
centered finite differences for this and came across the example 6 here (
https://www.ncl.ucar.edu/Document/Functions/Built-in/center_finite_diff_n.shtml)
which calculates dx at each latitude. My question would be, would I also
loop over longitude to get dy or would this be included in the calculation
already? I would calculate the S1 skill score over a global grid of 181x360
grid points in lat/lon.

Thanks,

-- 
Andrew Kren, PhD
Research Scientist I, Global Observing Systems Analysis (GOSA) Group
NOAA ESRL Global Systems Division (Rm 3C515)
325 Broadway, Boulder, CO 80305
(303) 497-5418
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