کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6537639 158339 2014 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Environmental factors affecting the accuracy of surface fluxes from a two-source model in Mediterranean drylands: Upscaling instantaneous to daytime estimates
ترجمه فارسی عنوان
عوامل محیطی موثر بر دقت شار سطحی از یک مدل دو منبع در خشکی دریای مدیترانه: برآورد روزانه به روز
کلمات کلیدی
شار حرارتی معقول، شار گرما خنثی، دمای سطح، خشکی مناطق دریایی، مدل دو منبع،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
چکیده انگلیسی
Finally, two extrapolation methods to obtain daytime (Rn > 55 W m−2) turbulent fluxes from the 15-min estimates of TSM were compared: (i) assuming the self-preservation of the evaporative and the non-evaporative fraction (EF and NEF method) and (ii) averaging the total daytime instantaneous fluxes (Averaging method). Despite the assumption of daytime self-preservation of EF and NEF was showed consistent, this method retrieved less accurate daytime estimates of H, and E than the Averaging method as a result of inaccuracies affecting estimates of EF and NEF from the TSM at our site. Moreover, better daytime estimates of H and E were obtained when using instantaneous fluxes from the TSMP than from the TSMS. Thus, reliable daytime estimates of H were obtained from the TSMP in a Mediterranean dryland, with mean errors of 20% and high correlations (R2 = 0.85). However, daytime E was strongly overestimated (125%) using the TSM by both methods, although a good correlation with eddy covariance measurements was found (R2 = 0.84).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural and Forest Meteorology - Volumes 189–190, 1 June 2014, Pages 140-158
نویسندگان
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