The southern ocean waves experiment. Part III: Sea surface slope statistics and near-nadir remote sensing

被引：18

作者：

Walsh, E. J. ^{[1
]}

Banner, M. L. ^{[2
]}

Wright, C. W. ^{[1
]}

Vandemark, D. C. ^{[3
]}

Chapron, B. ^{[4
]}

Jensen, J. ^{[5
]}

Lee, S. ^{[6
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Wallops Isl, VA USA

[2] Univ New S Wales, Sch Math, Sydney, NSW, Australia

[3] Univ New Hampshire, Ocean Proc Anal Lab, Durham, NH 03824 USA

[4] IFREMER, Ctr Brest, Dept Oceanog Spatiale, F-29280 Plouzane, France

[5] Natl Ctr Atmospher Res, Res Aircraft Facil, Broomfield, CO USA

[6] CSIRO Marine & Atmospher Res, Aspendale, Vic, Australia

来源：

JOURNAL OF PHYSICAL OCEANOGRAPHY | 2008年 / 38卷 / 03期

关键词：

D O I：

10.1175/2007JPO3771.1

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

During the Southern Ocean Waves Experiment (SOWEX), registered ocean wave topography and backscattered power data at Ka band ( 36 GHz) were collected with the NASA Scanning Radar Altimeter ( SRA) off the coast of Tasmania under a wide range of wind and sea conditions, from quiescent to gale-force winds with 9-m significant wave height. Collection altitude varied from 35 m to over 1 km, allowing determination of the sea surface mean square slope ( mss), the directional wave spectrum, and the detailed variation of backscattered power with incidence angle, which deviated from a simple Gaussian scattering model. The non-Gaussian characteristics of the backscatter increased systematically with the mss, suggesting that a global model to characterize Ka-band radar backscatter from the sea surface within 25 of nadir might be possible.

引用

页码：670 / 685

页数：16

共 13 条

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