The effect of the ionosphere on remote sensing of sea surface salinity from space: Absorption and emission at L band

被引：74
|
作者：
Le Vine, DM
Abraham, S
机构：
[1] Goddard Space Flight Ctr, Lab Hydrospher Proc, Microwave Sensors Branch, Greenbelt, MD 20771 USA
[2] Goddard Space Flight Ctr, Sci Syst & Applicat Inc, Microwave Sensors Branch, Greenbelt, MD 20771 USA
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2002年 / 40卷 / 04期
关键词：
ionospheric electromagnetic propagation; microwave radiometry; ocean salinity; remote sensing;
D O I：
10.1109/TGRS.2002.1006342
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The purpose of this work is to examine the effects of Faraday rotation and attenuation/emission in the ionosphere in the context of a future remote sensing system in space to measure salinity. Sea surface salinity is important for understanding ocean circulation and for modeling energy exchange with the atmosphere. A passive microwave sensor in space operating near 1.4 GHz (L-band) could provide global coverage and complement in situ arrays being planned to provide subsurface profiles. However, the salinity signal is relatively small and changes along the propagation path can be important sources of error. It is shown that errors due to the ionosphere can be as large as several psu. The dominant source of error is Faraday rotation but emission can be important.
引用
收藏
页码：771 / 782
页数：12
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