Physics schemes in the first version of NCEP operational hurricane analysis and forecast system (HAFS)

• DOI: 10.3389/feart.2024.1379069
• Publication Date: 2024-05-09T04:27:25Z
• Authors: Weiguo Wang; Jongil Han; Junghoon Shin; Xiaomin Chen; Andrew Hazelton; Lin Zhu; Hyun-Sook Kim; Xu Li; Bin Liu; Qingfu Liu; John Steffen; Ruiyu Sun; Weizhong Zheng; Zhan Zhang; Fanglin Yang
• Keywords: operational forecast; Science; Q; 0207 environmental engineering; tropical cyclones; 02 engineering and technology; HAFS; verification; physics parameterization

This document summarizes the physics schemes used in two configurations of first version operational Hurricane Analysis and Forecast System (HAFSv1) at NOAA NCEP. The package HAFSv1 is same as that NCEP global forecast system (GFS) 16 except for an additional microphysics scheme modifications to sea surface roughness lengths, boundary layer scheme, entrainment rate deep convection scheme. Those are specifically designed improving simulation tropical cyclones (TCs). mainly differ adopted TC-specific addition model initialization. Experiments made highlight impacts different on performance. Challenges developmental plans future versions HAFS discussed.