Summary:

The aim of the study was an intercomparison of precipitation measurements
with classic (Hellmann) and automatic (tipping-bucket) rain gauges. Basing on the
precipitation data some agricultural factors were calculated. With the obtained results,
prospects for automatic data use for agricultural enterprise were evaluated,
along the homogenious series maintaining.
The investigation was based on data obtained in years 2000-2004 from
classic and automatic (Eijkelkamp) weather stations set in Mochełek near Bydgoszcz.
It was supposed that in agrometeorological research the fundamental interval
of a factor is its ten-days value. Series of number from 15 to 180 (a ten-days
means in monts, seasons, warm and cold half-a-year and a year) obtained from
classic and automatic measurements were compared. A particular consideration of
correlative results was done to assign mathematical formulas that would allow use
the Hellmann and tipping-bucket rain gauges data series exchangeably.