Speaker
Dr
Jose A. Guijarro
(Spanish Meteorological Agency)
Description
‘Climatol’ is a contributed R package providing some tools for climatological tasks, the most important being the homogenization of climate time series by means of its homogen function. It was originally addressed to monthly series, but direct homogenization of daily series is also possible. However, homogenization of daily climatological series is recognized as a difficult task due to their low signal to noise ratio. The most advised methodology so far has been to adjust the daily values by interpolating monthly corrections derived from a homogenization at the monthly scale, when the power of break detection is much higher than at the daily scale, but this methodology did not yield good results when implemented in a development version of Climatol. Fortunately, this procedure can be avoided in this package, and daily series can be adjusted in the new version 3.0 by honoring the break-points detected at the monthly scale, without the need of interpolating monthly corrections.
In this presentation, details of the specific application of Climatol to the synthetic ERA-GPS IWV daily series will be given, explaining why the direct homogenization of the daily series had to be chosen, and how a better homogenization can be foreseen by finding break-points in the monthly aggregated series.
Primary author
Dr
Jose A. Guijarro
(Spanish Meteorological Agency)
