Research on the Ccalculation Mmodel of Western Tianshan area of Wwater Ssurface Eevaporation in Western Tianshan Area
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Abstract:
The 50-year precipitation, temperature, and water surface evaporation data at nine the use of Western Tianshan area 9 county meteorological stations nearly 50 years of precipitation, temperature and evaporation observation data, of western Tianshan area were used to analyze analyzes the relationship between the drought index in West Tianshan area and dryness in the area, and to deduced the calculation method of water surface evaporation based on theof observed values of E601 evaporator observation value using is represented by the precipitation and temperature data. The results showed that ,the relationships between the annual and seasonal (spring, summer, and autumn) drought indexes and drying indexes are significant at the representative stations of western Tianshan area, which indicates that the annual and seasonal (spring, summer, and autumn) precipitation and average temperature data can be used to Western Tianshan area representative station and the relationship between the spring, summer, autumn three season drought index and dryness are good and very significant, can be used to calculate the corresponding empirical model of water surface evaporation is established by year or spring, summer, autumn three season precipitation and average air temperature data. Based on the verification calculations of water surface evaporation values at each station, the models of single station and five integrated stations can generate the results satisfying the regulations and technical standards of “Standard for Hydrological Information and Hydrological Forecasting”. Therefore, the calculation method is of practical significance. By fitting the test surface evaporation of each represent station calculation, single station and 5 station integrated model fitting results are in line with the "norm" forecast hydrological information and relevant regulations and technical standards, the calculating method has very good practical value.
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