An improved non-iterative surface layer flux scheme for atmospheric stable stratification conditions

Li, Y.; Gao, Z.; Li, D.; Wang, L.; Wang, H.

Parameterization of turbulent fluxes under stably stratified conditions has always been a challenge. Current surface fluxes calculation schemes either need iterations or suffer low accuracy. In this paper, a non-iterative scheme is proposed to approach the classic iterative computation results using multiple regressions. It can be applied to the full range of roughness status 10 ≤ z/ z0 ≤ 10 5 and −0.5 ≤ log ( z0/ z0h) ≤ 30 under stable conditions 0 < RiB ≤ 2.5. The maximum (average) relative errors for the turbulent transfer coefficients for momentum and sensible heat are 12% (1%) and 9% (1%), respectively.

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Li, Y. / Gao, Z. / Li, D. / et al: An improved non-iterative surface layer flux scheme for atmospheric stable stratification conditions. 2014. Copernicus Publications.

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