The MAKESENS program has been developed for detecting and estimating trends in the time series of annual values of atmospheric and precipitation concentrations.
The MAKESENS procedure is based on the nonparametric Mann-Kendall test for the trend and the nonparametric Sen's method for the magnitude of the trend. The Mann-Kendall test is applicable to the detection of a monotonic trend of a time series with no seasonal or other cycle. The Sen's method uses a linear model for the trend. The MAKESENS template was created using Microsoft Excel 97 and the macros were coded with Microsoft Visual Basic.
The MAKESENS program and the User Manual are available for download: