Temperature anomalies

  • Temperature Anomalies
  • Departure of the temperature from its long-term mean value.
Abstract from DBPedia
    A temperature anomaly is the departure from the average temperature, positive or negative, over a certain period (day, week, month or year). In standard usage, the normal average temperature would be calculated over a period of at least 30 years over an homogeneous geographic region. For example, if the reference value is 15 °C, and the measured temperature is 17 °C, then the temperature anomaly is +2 °C (i.e., 17 °C −15 °C). Temperatures are obtained from surface and offshore weather stations, or inferred from meteorological satellite data. Anomalies can be calculated for surface and upper-air atmospheric temperatures or sea surface temperatures.

    (Source: http://dbpedia.org/resource/Temperature_anomaly)