I will consider some new developments in absolute measures of helicity (as opposed to measures
relative to a vacuum field). These measures are defined for arbitrary foliations of space by simply
connected surfaces (e.g. start with a set of nested spheres with spherical coordinates, then deform the
spheres). They are based on generalizations of Poloidal-Toroidal decompositions. One application lies
in measuring the helicity contained within the Northern hemisphere interior of the sun (or Southern
hemisphere).
