Wavelet based periodical analysis of the precipitation data of the Mediterranean Region and its relation to atmospheric indices

Partal T.

MODELING EARTH SYSTEMS AND ENVIRONMENT, cilt.4, sa.4, ss.1309-1318, 2018 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1007/s40808-018-0505-2
  • Dergi Adı: MODELING EARTH SYSTEMS AND ENVIRONMENT
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.1309-1318
  • Anahtar Kelimeler: Wavelet analysis, Precipitation, Mediterranean Region, El Nino, La Nina, NAO, SOUTHERN-OSCILLATION, EL-NINO, STREAMFLOW, VARIABILITY, TRANSFORM, TRENDS, MAXIMUM, CLIMATE, SIGNALS, RUNOFF
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

Main aim of this study finds out multi annual variability of the precipitation data in the Mediterranean Region of Turkey. For this aim, continuous wavelet transformation and global wavelet spectrum was applied on the annual and seasonal precipitation data. The results show that there are strong periodic events at 1-4 scale years in the precipitation data. These periodicities may be related to the El Nino and La Nina phenomenon. Besides, nearly 8-10year periodicity has the highest magnitudes for the both annual and winter precipitation. The global wavelet spectrum of precipitation data shows that the main multi-annual periodicities are at 16year scale level for Burdur station while the main multi-annual periodicities are at 8year scale level for Adana and Alanya stations. Besides, the results indicate that the precipitation data of the Mediterranean Region has high negative correlations with the North Atlantic Oscillation.