The thermal expansion data obtained are presented as functions of temperature using eighth - order polynomials separately for the horizontal (XY --RRB- and vertical (Z --RRB- directions of the fabrication process. (arxiv.org)
The idea that the rate of ice melt contribution can be represented as a linear function of temperature increase over a «non-melting temperature» is physically reasonable, but it is hard to see how that is a reasonable model of thermal expansion. (realclimate.org)
The altimeter data provides a measure of the heat and salt content of the water, but because the water density is a complicated non-linear function of temperature and salinity, it is difficult to invert the measurements to infer the salinity. (realclimate.org)