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- Title
Effect of meteorological data quality control and data adjustment on the reference evapotranspiration: a case study in Jafariye, Iran.
- Authors
Yari, Ruhullah; Darzi-Naftchali, Abdullah; Dehghanisanij, Hossein; Qi, Zhiming
- Abstract
Irrigation water management as an essential strategy to prevent water stress in the arid and semiarid regions of the world strongly relies on the appropriate estimation of reference evapotranspiration (ET0). Validated and high-quality meteorological data are required to estimate ET0 appropriately. In this study, to improve ET0 estimations, the data quality control approach was applied to weather parameters obtained from Jafariye agricultural automatic weather station (AWS), Qom, Iran. All parameters were measured from 16 July 2011 to 8 June 2018. After removing outlier data, the integrity of weather data was investigated using the range, step, internal consistency, and persistence tests. Inlier errors that pass all of the quality control procedures were detected. Modifications and adjustment methods were applied to correct weather data, and ET0 calculated with original, modified, and adjusted datasets. Range test flagged 0.85% and 0.6% of solar radiation and wind speed values, respectively. The most suspected data were indicated by the internal consistency test which was 35.6% of wind speed data. Persistence test flagged 2.2% of wind speed values as well. Quality control and adjustment methods increased ET0 values by 21% and 27% on average throughout the entire period, respectively, while the maximum variation due to the application of adjustment methods was 9% that occurred in 2013. Results showed that the proposed quality control procedures could improve the reliability of weather data of automatic weather stations.
- Subjects
IRAN; QUM (Iran); EVAPOTRANSPIRATION; QUALITY control; AUTOMATIC meteorological stations; DATA quality; TEST reliability; WIND speed
- Publication
Theoretical & Applied Climatology, 2020, Vol 141, Issue 1/2, p331
- ISSN
0177-798X
- Publication type
Article
- DOI
10.1007/s00704-020-03215-2