swSpice(salinity, temperature=NULL, pressure=NULL)temperature and
pressure must be provided) or a ctd object (in which
case salinity, temperature and pressure are deswRho.ctd object, then salinity,
temperature and pressure values are extracted from it, and used for the
calculation.Roughly speaking, seawater with a high spiciness is relatively warm and salty compared with less spicy water. Another interpretation is that spice is a variable measuring distance orthogonal to isopycnal lines on TS diagrams (if the diagrams are scaled to make the isopycnals run at 45 degres). The definition used here is that of Pierre Flament. (Other formulations exist.) Note that pressure is ignored in the definition. Spiceness is sometimes denoted $\pi(S,t,p)$.