The effect of artificial discontinuities on recent trends in minimum and maximum temperatures

A number of recent papers have focused in the asymmetric rise in minimum vs. maximum temperatures for various parts of the globe. Here we re-examine this question in order to determine the effects of inhomogeneities on the results. We apply a inhomogeneity detection and adjustment technique we have developed for individual station time series. Results show the effects on large-area (hemispheric) aggregate time series to be small. However, much larger effects are found when smaller regions are examined.