کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
82324 158390 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensible heat flux estimates using surface renewal analysis: A study case over a peach orchard
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Sensible heat flux estimates using surface renewal analysis: A study case over a peach orchard
چکیده انگلیسی

This paper reports on an experiment over a peach orchard to study the reliability of surface renewal, SR, analysis for estimating sensible heat flux. The peach orchard was located within the San Joaquin Valley near Parlier, CA, where clear skies, high summer temperatures, light winds, no rainfall and regional advection were the typical weather conditions. To account for the climate characteristics, the roughness sub-layer depth was estimated half-hourly. A model based on a mixing-length theory for momentum combined with mixing-layer analogy was derived and coupled with SR analysis. Roughness sub-layer estimates indicated that the top of the roughness sub-layer was oscillating above and below the measurement height. Accordingly, SR analysis was challenged as a method to be applied at a fixed height above the canopy top. Regardless of the atmospheric surface boundary-layer stability, sensible heat flux estimates were close to those determined by the eddy covariance method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural and Forest Meteorology - Volume 149, Issue 9, 1 September 2009, Pages 1397–1402
نویسندگان
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