Investigation of the Effects of North Atlantic Oscillation and Arctic Oscillation on Samsun Precipitation

Öz

Global atmospheric indices are effective on many hydrometerological parameters. North Atlantic Oscillation and the Arctic Oscillation is one of oscillations that act on Turkey. In this study, the relationship between the annual and seasonal precipitation data obtained from the Bafra, Carsamba, Samsun, Ladik and Vezirkopru meteorological observation stations in the province of samsun was investigated. As a result of the research, significant correlations were determined between atmospheric indices and seasonal and annual total precipitation. A significant portion of the correlations obtained is seen as a negative correlation with winter precipitation. The precipitation formed under the influence of positive and negative phases of atmospheric indices was determined and it was determined that the precipitation formed by the negative phase was more than the positive phase.  

Anahtar Kelimeler

• Precipitation,North Atlantic Oscillation,Arctic Oscillation,Correlation Analysis,Samsun

Kaynakça

1. [1] Kutiel, H., Maheras, P., Turkes, M. and Paz, S. “North Sea–Caspian Pattern (NCP)–an upper level atmospheric teleconnection affecting the eastern Mediterranean–implications on the regional climate.” Theoretical and Applied Climatology, 72(3): 173-192, 2002. doi: https://doi.org/10.1007/s00704-002-0674-8
2. [2] Kutiel, H. and Turkes, M. “New evidence for the role of the North Sea—Caspian Pattern on the temperature and precipitation regimes in continental central Turkey.” Geografiska Annaler: Series A, Physical Geography, 87(4): 501-513, 2005. doi: 10.1111/j.0435-3676.2005.00274.x
3. [3] Göktürk, OM. “North Sea Caspian pattern and its influence on the hydrometeorological parameters over Turkey.” Master thesis, Istanbul Technical University, Istanbul, 2005.[4] Karabork, M. C., Kahya, E. and Karaca, M. “The influences of the Southern and North Atlantic Oscillations on climatic surface variables in Turkey.” Hydrological Processes, 19(6): 1185-1211, 2005. doi: 10.1002/hyp.5560
4. [5] O. M. Göktürk, and M. Karaca, “North Sea Caspian Pattern and Its Influence on The Hydrometeorological Parameters over Basins of The Gap Region,” 5. GAP Mühendislik Kongresi, Şanlıurfa, 2006.
5. [6] Turkes, M. and Erlat, E. “Influence of the Arctic Oscillation on the variability of winter mean temperatures in Turkey.” Theoretical and Applied Climatology, 92(1): 75-85, 2008. doi: 10.1007/s00704-007-0310-8
6. [7] Karabork, M. C. and Kahya, E. “The links between the categorised Southern Oscillation indicators and climate and hydrologic variables in Turkey.” Hydrological Processes, 23(13): 1927-1936, 2009. doi: 10.1002/hyp.7331
7. [8] C. Sezen and T. Partal, “The Effects of North Sea Caspian Pattern Index onthe Temperature and Precipitation Regime in theAegean Region of Turkey,” World Academy of Science, Engineering and Technology International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering , 2017.
8. [9] Rodwell, M. J., Rowell, D. P. and Folland, C. K. “Oceanic forcing of the wintertime North Atlantic Oscillation and European climate.” Nature, 398(6725): 320-323, 1999. doi: 10.1038/18648

9. [10] M. Türkeş and E. Erlat. “Turkıyede Kuzey Atlantık Salınımı ile Bağlantılı Yagıs Degısıklıklerının 500hpa Seviyesındeki Dolaşımla Açıklanması.” Ulusal Coğrafya Kongresi, 363-372, 2005.
10. [11] Bayazıt, M. ve Yeğen Oğuz, E. B. Mühendisler İçin İstatistik. Birsen Yayınevi, 166-168, Istanbul: Çağlayan, 2005.