Detect-ing this error may or may not be easy. Reports containing observational and com-putational errors are almost impossible to correct. However, when stations make consistent, obvious errors in weather element values, maintain a list of these stations, the elements in error, and the probable applicable corrections. Computational errors are found in sea level pressure reductions, dew-point temperatures, and true wind speed and direction reported by moving ships. The first two elements are generally taken directly from tables or graphs.
Errors arise principally from misreading the tables or graphs.
In the case of true wind, greater reliance should be placed on reports from ships known to carry well-trained observers, such as weather ships, naval vessels, and large commercial liners. Many smaller vessels are not equipped with anemom-eters, in which case direct estimates of true wind are made using wind wave vs wind speed tables. Integrated Publishing's Official Web Page Click here for a current index of everything on this web site. All Rights Reserved.