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１００ｍ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数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。
In the present article the feasibility of estimating the gas transfer velocity across air sea 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.
出处
《遥感技术与应用》
CSCD
1998年第3期14-18,共5页
Remote Sensing Technology and Application
基金
国家自然科学基金
