热带海洋学报 ›› 2021, Vol. 40 ›› Issue (2): 1-6.doi: 10.11978/2020047CSTR: 32234.14.2020047

所属专题: 海洋大数据及应用

• 海洋气象学 •    下一篇

基于“黑格比”和“灿都”台风期间湍流数据的曳力系数和动力粗糙度长度参数化研究*

张小华1(), 毕雪岩2, 高志球1,4(), 刘长炜3, 彭文武1, 曾智华5, 杨楠1, 李煜斌1   

  1. 1.南京信息工程大学, 大气物理学院, 气象灾害预测与评估协同创新中心, 江苏 南京 210044
    2.中国气象局, 广州热带海洋气象研究所, 广东 广州 510640
    3.中山大学, 大气科学学院, 广东省气候变化与自然灾害研究重点实验室, 广东 珠海 510275
    4.中国科学院, 大气物理研究所, 大气边界层物理与大气化学国家重点实验室, 北京 100029
    5.中国气象局, 上海台风研究所, 上海 200030
  • 收稿日期:2020-05-14 修回日期:2020-07-19 出版日期:2021-03-10 发布日期:2020-08-02
  • 通讯作者: 高志球

Parameterizations of drag coefficient and aerodynamic roughness length using the turbulence data collected during typhoons Hagupit and Chanthu*

ZHANG Xiaohua1(), BI Xueyan2, GAO Zhiqiu1,4(), LIU Changwei3, PENG Wenwu1, ZENG Zhihua5, YANG Nan1, LI Yubin1   

  1. 1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, School of Atmospheric physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
    2. Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510640, China
    3. Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai 510275, China
    4. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
    5. Shanghai Typhoon Institute, China Meteorological Administration, Shanghai 200030, China
  • Received:2020-05-14 Revised:2020-07-19 Online:2021-03-10 Published:2020-08-02
  • Contact: GAO Zhiqiu
  • About author:ZHANG Xiaohua (1987—), male, PhD student. email: 394803509@qq.com
  • Supported by:
    National Key Research and Development Programs of Ministry of Science and Technology of China(2018YFC1506405);National Key Research and Development Programs of Ministry of Science and Technology of China(2018YFC1507404);National Natural Science Foundation of China(41275022);National Natural Science Foundation of China(4167018);National Natural Science Foundation of China(41975067);National Natural Science Foundation of China(41675019)

摘要:

海面的曳力系数和空气动力学粗糙度长度是计算海气动量、感热和水汽通量交换必需的参数。基于在“黑格比”和“灿都”台风期间收集的涡动相关系统观测数据, 文章研究了10m风速和摩擦速度之间、10m风速和曳力系数之间、以及10m风速和动力粗糙度长度之间的参数化关系。结果表明: 曳力系数和摩擦速度及10m风速之间存在抛物线关系, 动力粗糙度长度与摩擦速度及10m风速之间存在自然指数关系; 临界摩擦速度为0.83m·s-1, 临界10m级风速为23.69m·s-1

关键词: 空气动力学粗糙度, 曳力系数, 参数化, 台风, 黑格比, 灿都

Abstract:

The drag coefficient and aerodynamic roughness length of the sea surface are essential in calculating momentum, heat and water-vapor exchanges between the air and sea. With the observations collected by eddy covariance systems during typhoons Hagupit and Chanthu, we investigated parameterization relationships of 10-m wind speed with friction velocity, drag coefficient, and aerodynamic roughness length of the sea surface. Results show parabolic relationships between drag coefficient and friction velocity, and between drag coefficient and 10-m wind speed; results also show exponential relationships between aerodynamic roughness length and friction velocity, and between aerodynamic roughness and 10-m wind speed. We found that the critical friction velocity is 0.83 m·s-1 and critical 10m wind speed is 23.69 m·s-1.

Key words: aerodynamic roughness length, drag coefficient, parameterization, Typhoon Hagupit, Typhoon Chanthu

中图分类号: 

  • P732.31