A Comparative Study of the Theoretical and Actual Sunshine Hours and its Relationship to Climatic Factors in Iraq | ||
| Kirkuk Journal of Science | ||
| Article 2, Volume 18, Issue 4, December 2023, Pages 10-31 PDF (4.17 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.32894/kujss.2023.142517.1114 | ||
| Author | ||
| Jawdet H. Mohammed* | ||
| Department of Physics, College of Science, University of Kirkuk, Kirkuk, Iraq | ||
| Abstract | ||
| This study deals with the comparison of Theoretical Sunshine Hours (TSH) and Actual Sunshine Hours (ASH) in different meteorological stations in Iraq, and its relation to climatic factors (Maximum Air Temperature, Relative Humidity and Wind Speed), during the period between 1979 and 2019. The results indicate that the lowest monthly value of theoretical sunshine hours (TSH) was obtained at Mosul Station for the month of December with a value of 9.57 hours and the lowest monthly value for actual sunshine hours (ASH) was obtained at Mosul Station for the month of January with a value of 4.5 hours. The maximum monthly value of theoretical sunshine hours (TSH) at Mosul station for the month of June was obtained as 14.43 hours, and the maximum monthly value of actual sunshine hours (ASH) at Rutba station for July was obtained as 12.4 hours. The average annual values of theoretical sunshine hours (TSH) ranged between 11.77 hours - 12.15 hours, while the average annual values of actual sunshine hours (ASH) ranged between 8.19 hours - 9.19 hours. Simple regression equations were reached at the various study stations between theoretical and actual hours of sunshine and different climatic factors. | ||
| Keywords | ||
| Theoretical Sunshine Hours (TSH); Actual Sunshine Hours (ASH); Iraq; climatic factors; Simple Regression | ||
| References | ||
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[1] K. Karume, EJKB. Banda, J. Mubiru1, and M. Majaliwa. Correlation between sunshine hours and climatic parameters at four locations in uganda. Tanz Journal of Science, 33(2): 93–100, 2007, doi:10.4314/tjs.v33i1.44279.
[2] M. Sheik and C. V. Rao. Empirical models for estimating the global solar radiation of jubail industrial city, the kingdom of saudi arabia. SN Applied Sciences, 3: 1–11, 2021,doi:10.1007/s42452-020-04043-9.
[3] Y. Zhou, Y. Liu, D. Wang, and X. Liu. Comparison of machine-learning models for predicting short-term building heating load using operational parameters. Energy Build, 253: 111505, 2021, doi:10.1016/j.enbuild.2021.111505.
[4] H. Yakoubi, Y. El Mghouchi, N. Abdou, A. Hajou, and A. Khellouki. Correlating clearness index with cloud cover and other meteorological parameters for forecasting the global solar radiation over morocco. Optik, 242: 167145, 2021, doi:10.1016/j.ijleo.2021.167145.
[5] Fatemeh Rahimzadeh, Mojdeh Pedrama, and Michael C. Krukb. An examination of the trends in sunshine hours over iran. Meteorological Applications, 14(1): 80–90, 2012, doi:10.1002/met.1334.
[6] M. D. Umoh and S. O. Udoh. Estimation of global solar radiation from sunshine hours for warri, nigeria. Global Journal of Environmental Sciences, 9(1&2): 51–56, 2010, doi:10.22034/gjesm.2024.
[7] A. M. Muzathik, W. B. W. Nik, M. Z. Ibrahim, K. B. Samo, K. Sopian, and M. A. Alghoul. Daily global solar radiation estimate based on sunshine hours. International journal of mechanical and materials engineering, 6(1): 75–80, 2011.
[8] Faleh H.Mahmood and Gheidaa Sabeeh Al-Hassany. Syudy global solar radiation based on sunshine hours in iraq. Iraqi Journal of Science, 55(4A): 1663–1674, 2014, doi:10.24996/ijs.2019.55.12.
[9] Gheidaa Sabeeh Al-Hassany. Estimation of the best areas of sun duration hours in iraq by applying idw type of interpolation techniques by using gis program. Iraqi Journal of Science, 58(1A): 182–191, 2017, doi:10.24996/ijs.2019.60.12.
[10] Mertah naji abd and Gheidaa Sabeeh Al-Hassany. Estimation of average of global solar radiation depending on sunshine duration hours for iraqi meteorological stations. Iraqi Journal of Science, 60(12): 2742–2752, 2019, doi:10.24996/ijs.2019.58.12.
[11] Jawdet H. Mohammed. Study the relationship between the solar radiation and the air temperature in kirkuk governorate. Kirkuk Journal of Science, 14(3): 116–132, 2019, doi:10.32894/kujss.2019.14.3.10.
[12] Jawdet H. Mohammed. Study the effect of the amount of clouds on the number of actual hours of sunshine at selected stations in iraq. Kirkuk Journal of Science, 16(1): 145–159, 2021, doi:10.32894/kujss.2021.167891.
[13] M. Iqbal. An Introduction to Solar Radiation. Academic Press, New York, 1st edition, 1983.
[14] Iraqi Meteorological Organization and Seismology. Actual sunshine hours, maximum air temperatures, relative humidity and wind speed data. Department of Climate, for the period (1979-2019). | ||
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