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Daily Milan Temperature and Pressure Series (1763–1998): Completing and Homogenising the Data

  • Maurizio Maugeri
  • Letizia Buffoni
  • Barbara Delmonte
  • Adriana Fassina

Abstract

Daily meteorological observations have been made at the Brera astronomical observatory in Milan since 1763. Even if the data have always been collected at this observatory, the Milan series are far from being homogeneous as several changes were made to instruments, station location and observation methods. Within this context, the purpose of the paper is to discuss data homogenisation. Homogenisation is based both on objective information extracted from the station history (direct methodology) and on some statistical estimates (indirect methodology). Homogenisation by indirect methodology is mainly performed by comparison with other series whereas, if no other homogeneous series are available, it is based on the hypothesis that some statistics, such as the daily temperature range or the day to day variability, have no significant trends within some selected periods. Besides homogenisation also the completion of the series is discussed. The resulting series are complete and homogenised daily minimum, mean and maximum temperatures and complete and homogenised daily mean pressures. They all cover the period 1763–1998.

Keywords

Urban Heat Island Temperature Series Station Series Reference Series Daily Range 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • Maurizio Maugeri
    • 1
  • Letizia Buffoni
    • 2
  • Barbara Delmonte
    • 1
  • Adriana Fassina
    • 1
  1. 1.Istituto di Fisica Generale ApplicataMilanItaly
  2. 2.Osservatorio Astronomico di BreraMilanItaly

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