کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4923786 1363067 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessment of the methods for determining net radiation at different time-scales of meteorological variables
ترجمه فارسی عنوان
ارزیابی روش های تعیین تابش خورشید در مقیاس های زمانی مختلف از متغیرهای هواشناسی
کلمات کلیدی
تعادل انرژی، تابش خالص، زمان های مختلف داده های هواشناسی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

When modeling the soil/atmosphere interaction, it is of paramount importance to determine the net radiation flux. There are two common calculation methods for this purpose. Method 1 relies on use of air temperature, while Method 2 relies on use of both air and soil temperatures. Nowadays, there has been no consensus on the application of these two methods. In this study, the half-hourly data of solar radiation recorded at an experimental embankment are used to calculate the net radiation and long-wave radiation at different time-scales (half-hourly, hourly, and daily) using the two methods. The results show that, compared with Method 2 which has been widely adopted in agronomical, geotechnical and geo-environmental applications, Method 1 is more feasible for its simplicity and accuracy at shorter time-scale. Moreover, in case of longer time-scale, daily for instance, less variations of net radiation and long-wave radiation are obtained, suggesting that no detailed soil temperature variations can be obtained. In other words, shorter time-scales are preferred in determining net radiation flux.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rock Mechanics and Geotechnical Engineering - Volume 9, Issue 2, April 2017, Pages 239-246
نویسندگان
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