一种新的海面空气动力学粗糙度方案

计算物理 ›› 2008, Vol. 25 ›› Issue (6): 725-732.

一种新的海面空气动力学粗糙度方案

沙文钰¹, 潘玉萍^2,3, 朱首贤¹, 王巨华⁴, 葛苏放², 蔡美琼¹

1. 解放军理工大学气象学院, 江苏南京 211101;
2. 南京信息工程大学, 江苏南京 210044;
3. 南京军区空军气象中心, 江苏南京 210018;
4. 南京空军司令部气象处, 江苏南京 210018

收稿日期:2007-02-01 修回日期:2007-12-27 出版日期:2008-11-25 发布日期:2008-11-25
作者简介:沙文钰(1943-),男,江苏张家港,教授,博士生导师,硕士,从事海气相互作用及风暴潮流、浪数值研究.
基金资助:
国家自然科学基金(批准号:40775016)资助项目

A Sea Surface Aerodynamic Roughness Scheme

SHA Wenyu¹, PAN Yuping^2,3, ZHU Shouxian¹, WANG Juhua⁴, GE Sufang², CAI Meiqiong¹

1. College of Meteorology, Institute of Science and Engineering of PLA, Nanjing 211101, China;
2. Nanjing University of Information Science & Technology, Nanjing 210044, China;
3. Weather Center of PLA Nanjing Military Area Air Command, Nanjing 210018, China;
4. Weather Department of PLA Nanjing Military Area Air Command, Nanjing 210018, China

Received:2007-02-01 Revised:2007-12-27 Online:2008-11-25 Published:2008-11-25

摘要/Abstract

摘要： 综合利用6个国际海洋观测试验资料,共同验证Charnock参数与无因次粗糙度长度(z0/Hs)对波龄的依赖性,建立粗糙度回归模型,并对其进行显著性和适用性检验,从而导出粗糙度无因子形式与有效波高有关.利用研制的粗糙度方案(SP07)研究充分发展风浪与风区、风时和水深的关系,及粗糙度长度对摩擦速度和波龄的敏感度.把SP07方案引入国际上最先进的计算海气通量的COARE(V3.0)算法中,选择1985年12月在北海的FPN平台上的试验资料,进一步检验SP07方案的适用性.得出目前国际上最先进的O02和TY01方案较高估计了摩擦速度,YT96方案略偏低估计了摩擦速度,文中研制的方案计算结果与实测结果最接近.

关键词: 海面空气动力学粗糙度, 摩擦速度, 波龄, COARE算法

Abstract: We investigate dependence of Charnock parameters and nondimensional roughness length (z_o/H_a) on wave age. A roughness scheme is developed which reflects sea state. Effects of wind fetch, duration and water depth on sea roughness are studied. Sensitivity of roughness to friction velocity and wave age is discussed. The scheme is applied to the latest COARE algorithm. With data of FPN platform in North Sea in December 1985, applicability of the new scheme is tested. It is shown that TY01 and 002 schemes overestimate u. and YT96 scheme underestimates it. Results of the new scheme are the closest to observed data.

Key words: sea surface aerodynamic roughness, fraction velocity, wave age, COARE algorithm

中图分类号:

P731.26

沙文钰, 潘玉萍, 朱首贤, 王巨华, 葛苏放, 蔡美琼. 一种新的海面空气动力学粗糙度方案[J]. 计算物理, 2008, 25(6): 725-732.

SHA Wenyu, PAN Yuping, ZHU Shouxian, WANG Juhua, GE Sufang, CAI Meiqiong. A Sea Surface Aerodynamic Roughness Scheme[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2008, 25(6): 725-732.