Spatial and temporal correlation coefficients of temperature, wind components, geopotential and Montgomery potential were computed for sixteen station pairs on isobaric and isentropic surfaces, using a twelve-year period of Australian upper air data. The isentropic coefficients mostly exceeded the corresponding isobaric coefficients for temperature and wind components, but the isobaric coefficients of geopotential mostly exceeded the isentropic coefficients of Montgomery potential. The differences In the corresponding coefficients were usually less than 0.05, but vertical interpolation errors are likely to have biased the results against the isentropic coefficients.
Seaman et al. (Wed,) studied this question.