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Sea surface salinity obtaining method and device, equipment and medium

An acquisition method and salinity technology, which is applied in the field of sea surface salinity acquisition, can solve the problems of large deviation between salinity value and actual salinity value, inaccurate sea surface salinity, etc., and achieve the effect of accurate accuracy

Active Publication Date: 2021-02-26
NAT SATELLITE OCEAN APPL SERVICE +1
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  • Abstract
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Problems solved by technology

[0004] In the above scheme, inverting the sea surface salinity directly through the obtained brightness temperature data will cause a large deviation between the retrieved salinity value and the actual salinity value, thus making the obtained sea surface salinity inaccurate

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  • Sea surface salinity obtaining method and device, equipment and medium
  • Sea surface salinity obtaining method and device, equipment and medium
  • Sea surface salinity obtaining method and device, equipment and medium

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0049] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention provides a sea surface salinity obtaining method and device, equipment and a medium, and relates to the technical field of ocean exploration. The sea surface salinity acquisition methodcomprises the following steps: acquiring brightness temperature data of a target sea area in a preset waveband through a microwave radiometer; calculating the reflectivity of the target sea area in the preset wave band according to the brightness temperature data of the preset wave band; correcting the reflectivity of the target sea area in the preset waveband according to the spatiotemporal information corresponding to the brightness temperature data to obtain corrected reflectivity; and performing salinity inversion according to the corrected reflectivity to obtain the sea surface salinity of the target sea area. According to the method, the reflectivity of the target sea area is corrected according to the spatio-temporal information of the brightness temperature data, and the sea surface salinity is inverted according to the corrected reflectivity, so that the inversion precision is more accurate.

Description

technical field [0001] The invention relates to the technical field of ocean detection, in particular to a method, device, equipment and medium for acquiring sea surface salinity. Background technique [0002] Sea surface salinity (SSS) is the salinity concentration of seawater on the sea surface, which is closely related to the dielectric constant of seawater, and the dielectric constant determines the emissivity of seawater to the atmosphere. With the advent of spaceborne microwave radiometers that directly measure the brightness temperature (TB) data at the top of the atmosphere, theoretically the relationship between TB and SSS can be established by using the physical model of atmospheric radiation transfer and the emissivity or reflectivity model of the offshore corresponding relationship. [0003] At present, the method of obtaining the salinity of the sea surface is to use the space-borne microwave radiometer that operates in orbit and produces commercial products to...

Claims

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Application Information

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IPC IPC(8): G01J5/00G06F30/20
CPCG01J5/0003G06F30/20
Inventor 王兆徽蒋兴伟刘宇昕张洁
Owner NAT SATELLITE OCEAN APPL SERVICE
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