Effect of North Atlantic Oscillation (NAO) on the Characteristics of Wave Patterns Affecting the Climate of Iraq

  • بشرى احمد جواد  Almustansiriyah University, College of Education
Keywords: North Oscillation, trough, ridge, duration, frequency


The North Atlantic Oscillation (NAO) is an important climatic phenomenon. The phenomenon of NAO has a positive phase (positive pressure values) which becomes a negative phase (negative pressure values). The research concluded that the oscillation in its negative and the positive phases did not affect the frequency of trough and ridge and the number of days of duration and direction of its axes, did not show a certain trend in the repetition of wave characteristics, whether the negative or positive. However, there was a difference in the seasonal total of the troughs and ridges, which exceeded the frequency during the negative seasons, while the long waves and the system of trough + ridge were repeated between the negative and positive seasons. As for the number of days of survival, the number of days of survival was greater during the positive seasons and the fluctuations during the negative seasons.


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Author Biography

بشرى احمد جواد,  Almustansiriyah University, College of Education

Professor Bushra Ahmed Juad, Ph.D.

 Almustansiriyah University, College of Education           


Al-Jubouri, Munaim Hakim Khalaf, Sana Abbas Abdul-Jabbar, Practical Experiments in Meteorological Monitoring, Analysis and Forecasting. Al-Mustansiriya University, Faculty of Science, Department of Atmospheric Sciences, Jaafar al-Amami, 2010.
Aldzai, Salar Ali Khader. Practical Analysis of the Iraq Climate. First Edition, Dar al-Farahidi Publishing and Distribution, Baghdad, 2010.
Aldzai Salar Ali Khadr, et al. “The Influence of the High Cycle Index on the Iraq Climate.” Al-Adab Journal. University of Baghdad, College of Arts. Issue 85/2008.
Al-Samarrai, Qusay Abdul Majeed. Principles of Weather and Climate. Arabic Edition. Amman: Dar Al-Yazuri Scientific Publishing and Distribution,2008.
Arthur N. Strahle and Alan H. Strahler. Modern Physical Geography. 2nd edition. John Wiley & Sons, 1983.

Doblas-Reyes, F.J. & V. Paran, D. B. Stephenson. “The skill of Multi-model Seasonal Forecasts of the Winter North Atlantic Oscillation”. Journal of Climate Dynamics. Volume.21. Number 5-6, 2003.
Heins Wanner et al. “North Atlantic Oscillation-Concepts and Studies.” Surveys in Geaophysics 22, op.kluwer Academic Publishers, Printed in the Netherlands,2001.
IACMST-reports. http://www.oceannet.org /medag/reports/IACMST-reports/ch-weath/MCPreport-weath.htm#weath-sub0.
James W. Hurrell, et al. An Overview of the North Atlantic Oscillation. Geophysical Monograph Series. 134, American Geophysical Union, Printed in the United States ofAmerica.2003
Peterson, K. Andrew, Jian Lu & Richard J. Greatbatch. “Evidence of Nonlinear Dynamics in the Eastward Shift of the NOA.” Geophysical Research Letters. American Geophysical Union. Vol.30, No. 2, 2003.
T.M. Cronin et al. “Multiproxy evidence of Holocene climate variability from estuarine sediments Eastern North America”. Paleoceanography. American Geophysical Union,Vol.20, 2005.
How to Cite
جوادب. (2020). Effect of North Atlantic Oscillation (NAO) on the Characteristics of Wave Patterns Affecting the Climate of Iraq. Al-Adab Journal (ISSN: 1994473X), (131), 303-318. Retrieved from http://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/707