The Effect of Sunspot Cycles on the Precipitation Over Iraq


  • Baidaa J. Hassan Department of Atmospheric Science, College of Science, Al-Mustansiriyah University.



solar activity, Sunspot, Iraq, wavelet, precipitation.


Continuous wavelet transformation (C.W.T) by MATLAB technique has been used to study the relations between the sunspot cycles (solar activity) with annual precipitation over Iraq (for about 10 cycles). Results indicated that the sunspot numbers have three main periods, around 11, 21 and 33 years, while the precipitation has the same periods in addition to a small period (3-7years). By applying moving average according to the periodicities that found by continuous wavelet transformation, relations between solar cycles were closely related to the annual precipitation over Iraq.


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A Hanslmeier, The Sun and space weather. United States of America: Kluwer Academic Publishers, 2004.

Vardavas, I. M., Taylor F.W, Radiation and climate. New York, USA: Oxford University Press Inc, 2007.

R. E Benestad, Solar Activity and Earth's Climate. Chichester, UK: Praxis publishing Ltd, 2006.

D.F John, Astronomy.: Mc Grow – Hill Companies, 2006.

Baker, D. N., Klecker, B., Schwartz, S. J., Schwenn, Von Steiger, R, Solar Dynamics and its Effects on the Heliosphere and Earth.: Space Sciences Series of ISS, 2007.

The Role of Sunspots and Solar Wind in Climate change, (https: //www. spots -and-climate-change/), 2014.

Hathaway, David H., Robert, M, "What the Sunspot Record Tells Us about Space Climate, " journal of solar physics, vol. 224, pp. 5-19, 2004.

D. H Hathaway, The sunspot cycle.: NASA/Marshall solar physics, 2012.

J. H Mohammed, Dust Storms and their Relation with some Meteorological Parameters and Synoptic Patterns to Selected Stations in Iraq, 2010, Ph. D. Thesis, Atmospheric Science department college of Science, Al-Mustansiriyah University, Iraq.

Hahn, Brian D., Valentine, Danie, Essential MATLAB for Engineers and Scientists.: Elsevier, 2007.


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Original Article

How to Cite

B. J. Hassan, “The Effect of Sunspot Cycles on the Precipitation Over Iraq”, Al-Mustansiriyah Journal of Science, vol. 28, no. 1, pp. 5–9, Nov. 2017, doi: 10.23851/mjs.v28i1.239.

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