O‘ZBEKISTONDA OCHIQ OSMON SHAROITIDA KVAZI-REAL VAQTDA QUYOSH NURLANISHINI BAHOLASH: METEOSAT-9, CAMS MA’LUMOTLARIGA ASOSLANGAN YONDASHUV

Bakhrom Yusufugli Omonov; Ergashali Yuldashevich Raximov; Abdumannop Abduqahhorugli Imyaminov

doi:10.70769/2181-2284.ME.3(24).2026.7

Vol. 24 No. 03 (2026), Maqolalar

Vol. 24 No. 03 (2026)

QUASI-REAL-TIME ASSESSMENT OF SOLAR IRRADIANCE UNDER CLEAR-SKY CONDITIONS IN UZBEKISTAN: AN APPROACH BASED ON METEOSAT-9 AND CAMS DATA

Maqolalar

Published 2026-09-26

Omonov, B. Y.⁺⁻
Rakhimov, E. Y.⁺⁻
Imyaminov, A. A.⁺⁻

Omonov, B. Y.

National Research Institute of Renewable Energy Sources, Research Institute of Hydrometeorology

Rakhimov, E. Y.

National Research Institute of Renewable Energy Sources

https://orcid.org/0000-0001-7128-4598

Imyaminov, A. A.

National Research Institute of Renewable Energy Sources, Research Institute of Hydrometeorology

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Keywords

solar radiation clear-sky Meteosat-9 SEVIRI CAMS quasi-real time verification GHI

How to Cite

Omonov, B. Y., Rakhimov, E. Y., & Imyaminov, A. A. (2026). QUASI-REAL-TIME ASSESSMENT OF SOLAR IRRADIANCE UNDER CLEAR-SKY CONDITIONS IN UZBEKISTAN: AN APPROACH BASED ON METEOSAT-9 AND CAMS DATA. Alternative Energy, 24(03), 67-73. https://doi.org/10.70769/2181-2284.ME.3(24).2026.7

Abstract

Abstract. Introduction. This study investigates the possibility of estimating solar radiation in near-real time over Uzbekistan and adjacent regions using data from the Meteosat-9 geostationary satellite (MSG-2, IODC orbit).

Methods and materials. Based on the integration of multi-channel observations from the SEVIRI sensor and atmospheric parameters derived from CAMS data, total solar radiation was calculated at a 15-minute temporal resolution.

Results. The model results were validated against observations from 22 meteorological stations located across Uzbekistan for clear-sky days. Statistical evaluation (MAE, RMSE, MAPE, R²) demonstrated the high accuracy and robustness of the proposed approach. In all cases, the correlation was very high (R = 0.98–0.99), while the overall range of the mean absolute error was MAE = 26–64 W/m².

Conclusions. Spatial analysis revealed that the highest radiation values are mainly characteristic of southern and desert regions, while relatively lower values are observed in mountainous areas.

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References

[1]. International Energy Agency (IEA). World Energy Balances. - Paris: IEA, 2024.

[2]. International Renewable Energy Agency (IRENA). Tripling Renewable Power by 2030. - Abu Dhabi: IRENA, 2024.

[3]. Bird R. E., Hulstrom R. L. A simplified clear sky model for direct and diffuse insolation on horizontal surfaces. - Golden, Colorado: Solar Energy Research Institute, 1981.

[4]. Gueymard C. A. SMARTS spectral irradiance model after 25 years: New developments and validation // Solar Energy. - 2019. - Vol. 187. - P. 233–253. - DOI: 10.1016/j.solener.2019.05.037.

[5]. Bird R. E., Hulstrom R. L. A simplified clear sky model for direct and diffuse insolation on horizontal surfaces//Solar Energy. - 1981. -P.642-761. - DOI:10.1016/0038-092X(86)90104-0.

[6]. Ineichen P. Comparison of eight clear sky broadband models against 16 independent data banks // Solar Energy. -2006. -Vol. 80, No. 4. - P. 468-478. - DOI: 10.1016/j.solener.2005.04.018.

[7]. Avezov R. R., Avezova N. R., Matchanov N. A., Suleimanov S. I., Abdukadirova R. D. History and state of solar engineering in Uzbekistan//Applied Solar Energy. - 2012. - Vol. 48. - P. 14-19.

[8]. Avezova N., Sadullaeva S., Rakhimov E., Usmonov N. Solar development in Uzbekistan. Step 1: Solar data compilation // International Journal of Energy and Smart Grid. - 2017. - Vol. 2, No. 2. -P. 27-33. - DOI: 10.23884/IJESG.2017.2.2.01.

[9]. Rakhimov E. Y., Sadullaeva S. E., Kolomiets Y. G., Tashmatov K. K., Usmonov N. O. Analysis of the solar energy potential of the Republic of Uzbekistan // Applied Solar Energy. - 2017. - Vol. 53, No. 4. - P. 344-346. - DOI: 10.3103/S0003701X17040120.

[10]. Scientific Application Handbook on the Climate of the USSR. Series 3: Long-term Data. Issue 19: Uzbek SSR. - Leningrad: Gidrometeoizdat, 1989.

[11]. Asian Development Bank. Technical Assistance Report: Republic of Uzbekistan: Solar Energy Development. - Manila: Asian Development Bank, 2013.

[12]. Avezova N. R., Rakhimov E. Y., Izzatillaev J. O. Resource indicators used for solar photovoltaic plants in Uzbekistan. Part 1 // Applied Solar Energy. - 2018. - Vol. 54, No. 4. - P. 273–278. – DOI: 10.3103/S0003701X18040023.

[13]. Avezova N., Frid S., Lisitskaya N., Rakhimov E. Resource indicators of solar PV plants in the Republic of Uzbekistan. Part 2. Verification of satellite actinometric and reanalysis data for the conditions of the Republic of Uzbekistan // Applied Solar Energy. - 2019. - Vol. 55, No. 5. - P. 375–387. – DOI: 10.3103/S0003701X19050037.

[14]. Frid S. E., Rakhimov E. Y., Boliev B. B. Actinometric data for flat receivers solar energy units performance estimation // Applied Solar Energy. - 2019. - Vol. 55. - P. 78--82. - DOI: 10.3103/S0003701X19010079.

[15]. EUMETSAT. MSG High Rate SEVIRI Level 1.5 Data Guide [Electronic resource]. - EUMETSAT User Portal. Meteosat-9 operational Indian Ocean Data Coverage (IODC) service from 45.5°E. - URL: https://user.eumetsat.int/dashboard (date of access: 25.09.2026).

[16]. Copernicus Atmosphere Monitoring Service (CAMS). Atmosphere Data Store (ADS) [Electronic resource]. - ECMWF. - URL: https://ads.atmosphere.copernicus.eu/ (date of access: 25.09.2026).

[17]. Meteorologik kuzatuvlar uchun yagona portal [Elektron resurs]. - URL: https://data.meteo.uz/ (murojaat sanasi: 25.09.2026).

[18]. Cano D. et al. Method for the determination of the global radiation from meteorological satellite data // Solar Energy. - Vol. 37, No. 1. - P. 31–39. - DOI: 10.1016/j.solener.2004.04.017.

[19]. Reno M. J., Hansen C. W. Identification of periods of clear sky irradiance in time series of GHI measurements // Renewable Energy. - 2016. - Vol. 90. - P. 520-531. - DOI: 10.1016/j.renene.2015.12.031.

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