suzerain: #2998 substract mean contribution to one-dimensional spectra and fix scaling

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44883 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: update spatiotemporal consistent FPG field

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44886 0bd85f0b-c151-43b9-a1e9-27231104551f