A homogeneity test applied to precipitation data

In climate research it is important to have access to reliable data which are free from artificial trends or changes

Hans Alexandersson

2007

Scholarcy highlights

  • In climate research it is important to have access to reliable data which are free from artificial trends or changes
  • More precisely we will apply it to ratios between station values and some reference values
  • The reference value is a form of a mean value from surrounding stations
  • The test can be used as an instrument for quality control as far as the mean level of, for instance, precipitation is concerned
  • Several non-homogeneities are present in these series and probably reflect a serious source of uncertainty in studies of climatic trends and climatic change all over the world
  • An example illustrates the importance of using relevant climatic normals that refer to the present measurement conditions in constructing maps of anomalies

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