A new seasons definition based on classified daily synoptic systems: An example for the eastern Mediterranean

P. Alpert*, I. Osetinsky, B. Ziv, H. Shafir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A new definition for seasons based on a synoptic classification is introduced. It uses the automatically classified daily synoptic systems. For the eastern Mediterranean (EM), the temporal distribution of the synoptic systems over 53 years enables a proper definition of the timing and duration of the cold rainy, warm dry and of the transition seasons. Comparisons with the astronomical, meteorological and the temperature-based seasons definitions following Trenberth is performed. According to the synoptic definition proposed here and applied to the EM, the winter and summer seasons each last about 4 months (3 months and 23 days). The EM 'synoptic summer' and 'synoptic winter' defined here begin at about the earliest starting date, i.e. the meteorological start, and they end at about the latest ending date, i.e. the astronomical end.

Original languageEnglish
Pages (from-to)1013-1021
Number of pages9
JournalInternational Journal of Climatology
Volume24
Issue number8
DOIs
StatePublished - 30 Jun 2004

Keywords

  • Eastern Mediterranean climate
  • Eastern Mediterranean seasons
  • Length of the seasons
  • Synoptic system classification
  • Timing of the seasons

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