An improved non-iterative surface layer flux scheme for atmospheric stable stratification conditions
- 1Jiangsu Key Laboratory of Agriculture Meteorology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
- 2State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
- 3School of Energy and Environment, City University of Hong Kong, Hong Kong, China
- 4Program of Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ 08540, USA
Abstract. 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 ≤ 105 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.