On an Additive Model of Daily Temperature Climates

Abstract

Guttman and Plantico reported on an additive model to describe daily temperature climates. This note reports on spectral analyses of the nonrandom residuals from the model. We concluded that quasi-periodic features are not present in the 1951?80 residual maximum and minimum temperature data. Two areas of search for model components are suggested for future research. First, apparent singularities should be investigated and mathematically described. Second, nonstationary patterns over the period of record that may be linked to long term climatic variability should be understood and modeled.