کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
82171 158378 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimating uncertainties in individual eddy covariance flux measurements: A comparison of methods and a proposed new method
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Estimating uncertainties in individual eddy covariance flux measurements: A comparison of methods and a proposed new method
چکیده انگلیسی

We present a review of four methods that are currently and formerly used to estimate random flux measurement uncertainties in eddy covariance instrument systems, examining their theoretical basis. In our review, we illustrate a few of the strengths and weaknesses of each, paying particular attention to the explicit and implicit assumptions made. We then evaluate the practicality, ease of use, and relative performance for the methods reviewed. We also describe a new method of random flux uncertainty estimation that is designed to only be sensitive to random instrument noise, and compare its predictions with other methods on both real and synthetic data. We conclude that our new method is a good complement to the others examined. We also suggest that when our proposed technique is used with one or more of the other methods, new information is obtained about how contributions to the total uncertainty are distributed among their various causes.

Research highlights▶ Review of eddy covariance uncertainty estimation methods. ▶ Proposal of a new technique to estimate instrumental uncertainty. ▶ Evaluation of uncertainty estimation methods. ▶ Demonstration of procedure to propagate uncertainties through transformations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural and Forest Meteorology - Volume 151, Issue 3, 15 March 2011, Pages 394–405
نویسندگان
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