کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
312848 534290 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temporal variations of reference evapotranspiration and its sensitivity to meteorological factors in Heihe River Basin, China
ترجمه فارسی عنوان
تغییرات زمانی تبخیر تعرق مرجع و حساسیت آن به عوامل هواشناسی حوضه رودخانه حیفه، چین
کلمات کلیدی
تبخیر تعرق مرجع، پارادوکس تبخیر، فاکتور هواشناسی، حوضه رودخانه حیفه
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

On the basis of daily meteorological data from 15 meteorological stations in the Heihe River Basin (HRB) during the period from 1959 to 2012, long-term trends of reference evapotranspiration (ET0ET0) and key meteorological factors that affect ET0ET0 were analyzed using the Mann-Kendall test. The evaporation paradox was also investigated at 15 meteorological stations. In order to explore the contribution of key meteorological factors to the temporal variation of ET0ET0, a sensitivity coefficient method was employed in this study. The results show that: (1) mean annual air temperature significantly increased at all 15 meteorological stations, while the mean annual ET0ET0 decreased at most of sites; (2) the evaporation paradox did exist in the HRB, while the evaporation paradox was not continuous in space and time; and (3) relative humidity was the most sensitive meteorological factor with regard to the temporal variation of ET0ET0 in the HRB, followed by wind speed, air temperature, and solar radiation. Air temperature and solar radiation contributed most to the temporal variation of ET0ET0 in the upper reaches; solar radiation and wind speed were the determining factors for the temporal variation of ET0ET0 in the middle-lower reaches.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Science and Engineering - Volume 8, Issue 1, January 2015, Pages 1–8
نویسندگان
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