Eighty years of meteorological observations at Wageningen, the Netherlands: precipitation and evaporation

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Abstract

Annual and seasonal characteristics of precipitation and evapotranspiration were analysed of an 80-year data record (1928-2008) at Wageningen (the Netherlands). The precipitation series shows a mean annual rainfall of 765 ± 130 mm with a relatively high interannual variability [coefficient of variation (CV) = 17.0%]. Both the annual and seasonal rainfall trends show a small but statistically insignificant increase. Potential evapotranspiration was estimated by Makkink's formula, using observations of incoming solar radiation and air temperature as inputs. This provides a mean evapotranspiration of (525 ± 50) mm annum-1 with a relatively low interannual variability (CV = 9.5%). The annual and seasonal trends appear to be statistically significant, except for the summer season. In addition, since 1992, actual evapotranspiration is measured by the eddy-covariance technique and these results were found to be highly correlated with the potential evapotranspiration (Eact = 0.75Epot). A comparison is made with a class A evaporation pan operating between 1984 and 1989
Original languageEnglish
Pages (from-to)1315-1321
JournalInternational Journal of Climatology
Volume30
Issue number9
DOIs
Publication statusPublished - 2010

Keywords

  • piche evaporimeter
  • flux measurements
  • evaporation-pan
  • grassland area
  • carbon-dioxide
  • water
  • transpiration

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