基于Bulk方法的南海近海面大气湍流特征分析

大气与环境光学学报 ›› 2011, Vol. 6 ›› Issue (4): 268-273.

基于Bulk方法的南海近海面大气湍流特征分析

陈栋1,2, 饶瑞中1

（1．中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室，安徽合肥，230031； 2.中国科学院研究生院，北京，100049）

收稿日期:2010-03-29 修回日期:2010-10-12 出版日期:2011-07-28 发布日期:2011-07-18
通讯作者: 陈栋（1979-），男，博士研究生，辽宁丹东人，研究方向为激光大气传输。
作者简介:陈栋（1979-），男，博士研究生，辽宁丹东人，研究方向为激光大气传输。

Analysis of the Characteristics of Atmospheric Turbulence in Marine Surface Layer of South China Sea Based on Bulk Model

CHEN Dong1, 2, RAO Rui-zhong1

(1. Key Laboratory of Atmospheric Component and Optical radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences，Hefei 230031, China;
2. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China)

Received:2010-03-29 Revised:2010-10-12 Published:2011-07-28 Online:2011-07-18

摘要/Abstract

摘要：

大气湍流的复杂性以及利用光学手段测量近海面巨量时空范围内大气湍流的局限性，使得利用常规气象要素估算近海面大气湍流成为目前描述巨量时空范围内大气湍流的一种可行的方法。从莫宁•奥布霍夫相似理论出发，结合Friehe等人在分析近海面光学湍流问题上对温度，风速以及湿度脉动的综合考虑，依据1965年至1997年，(10°N~21°N, 110°E~120°E)区域内的常规气象要素，描述典型海域近海面大气湍流特征。结果表明，南海海域近海面大气湍流的平均强度在10-17到10-14量级之间，湍流强度随季节变化较为显著，总体上说，冬季南海大气湍流强度要大于夏季，而空间起伏不显著，滨海大气湍流略大于公海大气湍流，但数值比较不显著。

关键词: 海洋大气湍流, 常规气象要素, 南海, 近海面

Abstract:

Owing to the complexity of atmospheric turbulence and the limitation of direct observation method, it is difficult to obtain the atmospheric turbulence in marine surface layer in large spatial and temporal scale. The indirect way by using meteorology factors to estimate the strength of atmospheric turbulence in marine surface with large spatial and temporal scale is an optional method. The relationship between the strength of surface turbulence and the meteorology factors (fluctuations of temperature, wind speed (vertical) and humidity) are based on the empiristic expression offered by Friehe et al. The method is applied to the district of South China Sea(10°N~ 21°N, 110°E ~120°E), based on the data from 1965 to 1997. The data consists of water temperature, air temperature at height z, water vapor density adjacent to the sea surface and average water vapor density at height z, the average wind speed is also included to estimate the atmospheric turbulence in typical marine surface layer. It turns out that the range of mean turbulence is from 10-17 to 10-14, there are significant seasonal changes of atmospheric turbulence in marine surface layer of South China Sea, in general turbulence is much stronger in winter than it in summer, and the discrimination of atmospheric turbulence between seacoast and mare liberum seems not significantly.

Key words: marine atmospheric turbulence, routine meteorology factors, South China Sea, marine surface layer

中图分类号:

TN911.4

陈栋饶瑞中. 基于Bulk方法的南海近海面大气湍流特征分析[J]. 大气与环境光学学报, 2011, 6(4): 268-273.

CHEN Dong, RAO Rui-Zhong. Analysis of the Characteristics of Atmospheric Turbulence in Marine Surface Layer of South China Sea Based on Bulk Model[J]. Journal of Atmospheric and Environmental Optics, 2011, 6(4): 268-273.