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COMPARATIVE ANALYSIS OF ERA5 REANALYSIS DATA WITH METEOROLOGICAL DATA OBSERVED IN THE AKHANGARAN RIVER BASIN

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Hydrometeorology and environmental monitoring

Hydrometeorology and environmental monitoring

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ARTICLE ANNOTATION

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This study examines the correlation between observed meteorological data and ERA5 reanalysis data in the Akhangaran River Basin. The evaluation is conducted using five statistical metrics across three key categories: Error Magnitude (RMSE, MAE), Systematic Bias (PBIAS), and Performance or linear correlation (NSE, R²). Monthly data between 1970-2024 from six meteorological stations are compared with corresponding monthly ERA5 datasets to assess the reliability of reanalysis data in representing local meteorological conditions. Additionally, line graphs are used to visualize temporal variations and discrepancies though different years. By integrating both statistical and visual analyses, this study provides a comprehensive assessment of ERA5 reanalysis data applicability for hydrometeorological research in Akhangaran River Basin.

AUTHORS

B.Nishonov

Научно-исследовательский гидрометеорологический институт

M.Abdurakhmanov

Мирзо Улуғбек номидаги Ўзбекистон Миллий университети,

Tags

# correlation analysis# статистик баҳолаш# статистическая оценка# корреляционный анализ# ERA5 reanalysis# observed data# statistical evaluation# Error Magnitude# Nash-Sutcliffe Efficiency (NSE)# Percent Bias (PBIAS)# climate data validation.# ERA5 реанализ# кузатилган маълумотлар# корреляция таҳлили# хато ўлчами# Nash Sutcliffe самарадорлиги (NS# фоиз четлашиш (PBIAS)# маълумотларни валидация қилиш.# реанализ ERA5# наблюдаемые данные# величина ошибки# коэффициент эффективности Нэша–С# процентное смещение (PBIAS)# валидация данных.

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Article Identifiers

ROI:

https://eroi.uz/11.0191/A0825-0002

DOI:

Not Available

References

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Eletronic resources: ECMWF (European Centre for Medium-Range Weather Forecasts) URL: https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5

Copernicus climate portal. URL: https://cds.climate.copernicus.eu/datasets/reanalysis-era5-single-levels