EFFECT OF MEASUREMENTS TIME SCALES OF METEOROLOGICAL VARIABLES ON THE ESTIMATION OF CROP REFERENCE WATER REQUIREMENT IN KERMAN REGION

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BAKHTIARI B.; LIAGHAT A.A.M.; KHALILI ALI

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Journal: Iranian Journal of Irrigation and Drainage Year:2010 | Volume:4 | Issue:1 Page(s): 83-89

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Title

EFFECT OF MEASUREMENTS TIME SCALES OF METEOROLOGICAL VARIABLES ON THE ESTIMATION OF CROP REFERENCE WATER REQUIREMENT IN KERMAN REGION

Author(s)

BAKHTIARI B. | LIAGHAT A.A.M. | KHALILI ALI | Issue Writer Certificate

Keywords

CLIMATOLOGICAL DATAQ1

EVAPOTRANSPIRATIONQ2

KERMANQ2

TEMPORAL SAMPLINGQ3

Abstract

In this study, the effect of time scales of measured meteorological variables on the estimation of the reference EVAPOTRANSPIRATION (ETo) has been considered in an automatic weather station in Shahid Bahonar University of KERMAN. At first, the effect of the time scales sampling on the estimation of the daily means of the shortwave solar radiation, wind speed, air temperature and relative humidity has been analyzed using a dataset measured 10 minutes interval (4318 data) during a period of one month (June 2007). Also using a sensitivity analysis of the Standardized Penman- Monteith ASCE model and combined the sensitivity coefficients with the errors due to the TEMPORAL SAMPLING, the impact of the time scales sampling on the estimation of daily ETo for each variables has been quantified. The results showed that the solar radiation and wind speed are the most sensitive meteorological variables to bias induced by inadequate time scales sampling. Daily errors of 12.6% for the solar radiation and 13.6% for the wind speed may be obtained if these variables are inappropriately sampled. Moreover, the impact of inappropriate TEMPORAL SAMPLING on the estimation of ETo can be significant with the maximum bias of 0.41 mmd-1 due to inappropriate solar radiation sampling.

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APA: Copy

BAKHTIARI, B., LIAGHAT, A.A.M., & KHALILI, ALI. (2010). EFFECT OF MEASUREMENTS TIME SCALES OF METEOROLOGICAL VARIABLES ON THE ESTIMATION OF CROP REFERENCE WATER REQUIREMENT IN KERMAN REGION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 4(1), 83-89. SID. https://sid.ir/paper/131783/en

Vancouver: Copy

BAKHTIARI B., LIAGHAT A.A.M., KHALILI ALI. EFFECT OF MEASUREMENTS TIME SCALES OF METEOROLOGICAL VARIABLES ON THE ESTIMATION OF CROP REFERENCE WATER REQUIREMENT IN KERMAN REGION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2010;4(1):83-89. Available from: https://sid.ir/paper/131783/en

IEEE: Copy

B. BAKHTIARI, A.A.M. LIAGHAT, and ALI KHALILI, “EFFECT OF MEASUREMENTS TIME SCALES OF METEOROLOGICAL VARIABLES ON THE ESTIMATION OF CROP REFERENCE WATER REQUIREMENT IN KERMAN REGION,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 4, no. 1, pp. 83–89, 2010, [Online]. Available: https://sid.ir/paper/131783/en

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