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遥感技术与应用  1998, Vol. 13 Issue (3): 14-18    DOI: 10.11873/j.issn.1004-0323.1998.3.14
遥感应用     
利用微波散射估计海面气体传输速度*
徐 丰  贾 复
(中国科学院力学研究所 北京 100080)
PredictionoftheGasTransfer Velocity Across the Air-Water Interface in Terms of Radar Backscatter Measurements
XU Feng  JIA Fu
(Institute of Mechanics,The Chinese Academy of Sciences,Beijing 100080)
 全文: PDF 
摘要:

把作者提出的水气界面处气体传输率复合计算公式及适用于不同频率的微波散射反演公式〔1〕结合起来,探索根据微波散射直接反演水气界面处气体传输率的可行性。介绍了根据此反演方法所作的预测与Wanninkhof和Bliven〔2〕在Delft大学100 m长风水槽进行的微波散射和气体传输同步测量结果所进行的比较,比较结果是令人满意的。这表明:从微波散射系数反演水气界面风速,进而推求水气界面处气体传输速度是全球尺度遥测估计水气界面气体传输的一条很有希望的途径。在此采用的反演计算方法较之直接关联遥感据与传输速度的预测方法更有其普遍性和灵活性,即它不依赖散射计工作频率,同时还可依据不同的气体传输测量数据来源不断改进反演公式。

关键词: 微波散射气体传输速度水气界面    
Abstract:

In the present article the feasibility of estimating the gas transfer velocity across airsea interface in terms of microwave backscatter is explored by combining two computation methods proposed or adapted previously by the authors〔1〕. The predictions of gas transfer velocity in terms of microwave backscattering was compared with the simultaneous measurement data of gas transfer velocity and microwave backscatter obtained by Wanninkhof and Bliven〔2〕in Delft big wave tank. Satisfactory comparison results were obtained. Usage of the present computation methods in making prediction has advantage of greater flexibility over empirical correlation like those in〔2〕, as the proposed approach is less dependent on the working frequency of the microwave instrument and various data sources of gas transfer and microwave backscatter measurements can be utilized to improve the prediction.

Key words: Radar backscatter    Gas transfer velocity    Air-water interface
收稿日期: 1998-02-24 出版日期: 2012-02-07
:  P 714.1  
基金资助:

本项研究得到国家自然科学基金的资助。

作者简介: 徐丰,男,1965年9月出生,助理研究员,主要从事环境流体力学及微波遥感应用研究工作。
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引用本文:

徐 丰  贾 复. 利用微波散射估计海面气体传输速度*[J]. 遥感技术与应用, 1998, 13(3): 14-18.

XU Feng  JIA Fu. PredictionoftheGasTransfer Velocity Across the Air-Water Interface in Terms of Radar Backscatter Measurements. Remote Sensing Technology and Application, 1998, 13(3): 14-18.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.1998.3.14        http://www.rsta.ac.cn/CN/Y1998/V13/I3/14

1 徐 丰,贾 复.适用于不同频率的微波海面散射计算方法.遥感技术与应用,1996,11(3):26~30.
2 Winnikhof R H,Bliven L F.Relationship Between Gas Exchange, Wind Speed, and Radar Backscatter in a Large Wind-wave Tank. J Geophys Res,1991,96(C2):2785~2796.
3 Brutsaert W,Girka G H. Gas Transfer at Water Surfaces. Reidel, 1984.639.
4 Wilhelms S C,Gulliver J S. Air-Water Mass Transfer. 2nd Int Symp Minneapolis ASCE. 1990.
5 徐 丰,贾 复.海面微波散射系数的一个工程算法.遥感技术与应用,1995,10(3):7~12.
6 Komori S, Nagaosa R,Murakami Y. Turbulence Structure and Mass Transfer Across a Sheared Air-water Interface in Wind-driven Turbulence. J Fluid Mech,1993, 249:161~183.
7 Kitaigorodskii S A. On the Dynamic Theory of Turbulent Gas Transfer Across an Air-sea Interface in the Precence of Breaking Wind-waves. J Phys Oceanogr, 1984, 14:960~972.
8 Ocampo-Torres F J, Donelan M A, Merzi N,et al.Laboratory Measurements of Mass Transfer of Carbon Dioxide and Water Vapor for Smooth and Rough Flow Conditions. Tellus,1994,46B:16~32.

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