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Do climatological averages serve adequately as normals?
Submitted by vlaplant on Thu, 02/21/2013 - 16:17
|Title||Do climatological averages serve adequately as normals?|
|Publication Type||Conference Proceedings|
|Year of Conference||1940|
|Conference Name||8th Annual Western Interstate Snow Survey Conference|
|Series Title||Proceedings of the 8th Annual Western Interstate Snow Survey Conference|
|Date Published||June 1940|
|Publisher||American Geophysical Union, Transactions, Part III-C:|
|Conference Location||Seattle, Washington|
|Keywords||Climatological data, Normals|
A discussion of the objections to the use of the arithmetical average or mean as a parameter to express the normal climatological values; as normal rainfall, normal temperature or the percent normal. The normal value should represent the most common value of a series with a probability of being equaled or exceeded approximately 50% of the time. The infallibility of this occurrence is illustrated in an array of tabulated data. It is suggested that another parameter be used to express the normal values from a series; the median; the mode; the geometric mean; or the harmonic mean. It is further suggested that in speaking about the arithmetic average or mean that the term normal not be used.This matter became a resolution to the Secretary of the Section of Hydrology of the American Geophysical Union for a nationwide acceptance.