ESTIMATING THE DISTRIBUTION OF SNOW MELT EQUIVALENT AT THE PEAK OF SNOW ACCUMULATION, THROUGH DEGREE- DAY MODEL

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FATHZADEH ALI; ZARE BIDAKI RAFAT

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Journal: Iranian Journal of Soil and Water Research Year:2012 | Volume:43 | Issue:2 Page(s): 171-177

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Title

ESTIMATING THE DISTRIBUTION OF SNOW MELT EQUIVALENT AT THE PEAK OF SNOW ACCUMULATION, THROUGH DEGREE- DAY MODEL

Author(s)

FATHZADEH ALI | ZARE BIDAKI RAFAT | Issue Writer Certificate

Keywords

SPATIAL DISTRIBUTIONQ2

SNOW WATER EQUIVALENTQ2

DEGREEQ1

DAYQ2

MODISQ2

Abstract

Estimating snow melt water equivalent is one of the most important challenges in determining the hydrological regime in mountainous basins. There are some problematic obstacles in field observations, due to inaccessibility as well due to difficulties in snow sampling at snow covered peaks making researchers try to find indirect approaches. One of these methods in use is DEGREE- DAY model that is simple and used in snow melt estimations. In this study the model is applied along with MODIS images for predicting SNOW WATER EQUIVALENT at times of peak snow accumulation. For this purpose, following a determination of the time of snow accumulation peak, the DEGREE-days needed for the snow to be completely melted is computed and then, the SNOW WATER EQUIVALENT at any point calculated by reversing DEGREE-day equation. The results show that there is 13 percent difference between the observed and estimated data. This indicates that MODIS data and DEGREE-day model can acceptably estimate SNOW WATER EQUIVALENT in not easily accessible areas. Therefore, the DEGREE-day model would be helpful in hydrological monitoring programs in not easily accessible mountainous basins.

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APA: Copy

FATHZADEH, ALI, & ZARE BIDAKI, RAFAT. (2012). ESTIMATING THE DISTRIBUTION OF SNOW MELT EQUIVALENT AT THE PEAK OF SNOW ACCUMULATION, THROUGH DEGREE- DAY MODEL. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 43(2), 171-177. SID. https://sid.ir/paper/225906/en

Vancouver: Copy

FATHZADEH ALI, ZARE BIDAKI RAFAT. ESTIMATING THE DISTRIBUTION OF SNOW MELT EQUIVALENT AT THE PEAK OF SNOW ACCUMULATION, THROUGH DEGREE- DAY MODEL. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2012;43(2):171-177. Available from: https://sid.ir/paper/225906/en

IEEE: Copy

ALI FATHZADEH, and RAFAT ZARE BIDAKI, “ESTIMATING THE DISTRIBUTION OF SNOW MELT EQUIVALENT AT THE PEAK OF SNOW ACCUMULATION, THROUGH DEGREE- DAY MODEL,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 43, no. 2, pp. 171–177, 2012, [Online]. Available: https://sid.ir/paper/225906/en

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