<ul><li>A climate data manager identifies a pattern in anomalous observation values at a set of stations</li><br /></p><p></ul><br /></p><p><ul><li>The data manager investigates the <b>observations metadata</b> associated with each station and discovers that they all utilise the same model of sensor that is maintained by the same organisation</li><br /></p><p></ul><br /></p><p><ul><li>Further investigation identifies that for a period of time that there was a deficiency in the maintenance process used on that model of sensor, by the maintenance organisation</li><br /></p><p></ul><br /></p><p><ul><li>The data manager searches for all other stations that used the same model of sensor and that were maintained by that organisation over the identified time period and flags the affected observations as suspect for further follow up.</li><br /></p><p></ul><br /></p><p><ul><li><font color="#2f8cff">Comment: there are many variations around this particular theme for any number of observations metadata parameters.</font></li><br /></p><p></ul><br /></p>