EVALUATION OF DIFFERENT RADIATION AND HUMIDITY METHODS FOR ESTIMATION OF ETO AND ANALYSIS OF ARIDITY
EFFECTS IN GOLESTAN PROVINCE

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SHARIFIAN H.; GHAHRAMAN B.; ALI ZADEH A.; MIR LOTFI S.M.

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Journal: Iranian Journal of Soil Research Year:2005 | Volume:19 | Issue:2 Page(s): 280-290

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Title

EVALUATION OF DIFFERENT RADIATION AND HUMIDITY METHODS FOR ESTIMATION OF ETO AND ANALYSIS OF ARIDITY EFFECTS IN GOLESTAN PROVINCE

Author(s)

SHARIFIAN H. | GHAHRAMAN B. | ALI ZADEH A. | MIR LOTFI S.M. | Issue Writer Certificate

Keywords

REFERENCE EVAPOTRANSPIRATIONQ3

ARIDITYQ4

GOLESTAN PROVINCEQ2

Abstract

REFERENCE EVAPOTRANSPIRATION (ETo) is a term used for a grass/alfalfa medium under no-stress condition. ETo can be measured in lysimeters or estimated by the empirical equations. Due to lack of lysimetric data in GOLESTAN PROVINCE and taking FAO-Penman-Monteith (F-P-M) as a standard method, the radiation and humidity methods were compared with this standard method in synoptic stations of GOLESTAN PROVINCE (Gorgan, Gonbad and Marave-Tappeh). In this evaluation, the data used were either raw data or corrected based on local and/or universal conditions. The results showed the accuracy order for these methods to follow the sequence Makkink, Turc, Jensen-Haise and radiation. The results also showed that Gorgan and Gonbad stations did not need any ARIDITY correction, while the Maraveh- Tappeh had to be corrected. When estimated ETo values from radiation methods (e.g. J-H in Maraveh-Tappeh) were corrected by regression equation, the amounts obtained for these methods were applicable in Golestan. The humidity methods were not useful in Golestan, unless they were corrected by suitable regression equations in Gorgan and Gonbad stations.

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APA: Copy

SHARIFIAN, H., GHAHRAMAN, B., ALI ZADEH, A., & MIR LOTFI, S.M.. (2005). EVALUATION OF DIFFERENT RADIATION AND HUMIDITY METHODS FOR ESTIMATION OF ETO AND ANALYSIS OF ARIDITY EFFECTS IN GOLESTAN PROVINCE. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, 19(2), 280-290. SID. https://sid.ir/paper/15990/en

Vancouver: Copy

SHARIFIAN H., GHAHRAMAN B., ALI ZADEH A., MIR LOTFI S.M.. EVALUATION OF DIFFERENT RADIATION AND HUMIDITY METHODS FOR ESTIMATION OF ETO AND ANALYSIS OF ARIDITY EFFECTS IN GOLESTAN PROVINCE. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2005;19(2):280-290. Available from: https://sid.ir/paper/15990/en

IEEE: Copy

H. SHARIFIAN, B. GHAHRAMAN, A. ALI ZADEH, and S.M. MIR LOTFI, “EVALUATION OF DIFFERENT RADIATION AND HUMIDITY METHODS FOR ESTIMATION OF ETO AND ANALYSIS OF ARIDITY EFFECTS IN GOLESTAN PROVINCE,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. 19, no. 2, pp. 280–290, 2005, [Online]. Available: https://sid.ir/paper/15990/en

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