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An update of non-iterative solutions for surface fluxes under unstable conditions
Authors:Yubin Li, Zhiqiu Gao, Dan Li, Fei Chen, Yuanjian Yang and Liang Sun   Read:
Abstract
 
A new non-iterative approach has been developed to calculate surface fluxes. The range −5 ≤ RiB < 0,10 ≤ z/z0 ≤ 105 and −0.5 ≤ ln(z0/z0h) ≤ 30 is divided into eight regions, and in each of the regions, multiple linear regression is performed to obtain non-iterative solutions for surface fluxes. As compared to the other two most recent non-iterative schemes, we show that the suggested scheme has the smallest bias. The maximum relative errors of turbulent transfer coefficients for momentum (CM) and sensible heat (CH), as compared to those obtained from the classic iterative method, are always smaller than 2 % from our new non-iterative scheme.

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Citation : Li, Y., Z. Gao, D. Li, F. Chen, Y. Yang, and L. Sun, 2015: An update of non-iterative solutions for surface fluxes under unstable conditions. Boundary-Layer Meteorol., 156, 501-511.
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