Remote sensing method for estimating particle fraction structure of offshore water body phytoplankton

A technology for phytoplankton and water bodies, which is used in computing, computer parts, instruments, etc. to enrich optical characteristic information, improve acquisition capabilities, and expand applications.

Active Publication Date: 2017-07-18
NANJING UNIV OF INFORMATION SCI & TECH
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[0008] To sum up, the field observation data used in the existing PSC research are mainly used in the open ocean, or the database of the open ocean and a small amount of turbid water body, while the PSC inversion research based on the field measurement data in my country's coastal waters hardly involves

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  • Remote sensing method for estimating particle fraction structure of offshore water body phytoplankton
  • Remote sensing method for estimating particle fraction structure of offshore water body phytoplankton
  • Remote sensing method for estimating particle fraction structure of offshore water body phytoplankton

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[0036] In the present invention, a new water color remote sensing method for retrieving the granular structure of offshore water phytoplankton is proposed, and the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. The specific steps are as follows:

[0037] 1. Obtain the observation data of the optical characteristics of the water body and water quality parameters through the observation means of the survey ship and the on-site instrument observation technology. Through the temperature and salinity depth meter CTD, solar photometer CE318, on-site ProfilerII water profile spectrometer or portable ASD spectrometer and other equipment erected on the offshore platform, various instruments and equipment such as observation data of water optical characteristics and water quality parameters are obtained, and long-term voyages are carried out. Time observation, to obtain data such as water body temperature, salinit...

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Abstract

The invention discloses a remote sensing method for estimating a particle fraction structure of offshore water body phytoplankton. The method comprises the steps of performing diagnostic pigment analysis (DPA) on HPLC data which are obtained through voyage, and obtaining a Chla concentration value which corresponds with each particle diameter; performing derivation based on a power exponent relation according to field measured remote sensing reflectivity data for obtaining a localized parameter; and finally applying an established model to a satellite, thereby obtaining PSC time-space distribution information which is inversed by the satellite. The remote sensing method has advantages of settling a problem of offshore water body phytoplankton particle fraction structure inversion, algorithm shortage in China, expanding application of water color remote sensing satellite data, and improving acquiring capability for an essential parameter of phytoplankton particle fraction structure.

Description

technical field [0001] The invention relates to the technical field of ocean remote sensing, and relates to a satellite ocean water color remote sensing method for estimating the granular structure of phytoplankton in coastal waters. Background technique [0002] Ocean water color remote sensing plays an important role in satellite ocean remote sensing technology, and has become an important means of water body research. It can obtain the concentration information of water body components synchronously on a large scale, such as chlorophyll, suspended particulate matter, yellow substances, etc. Water color remote sensing is widely used in the estimation of marine primary productivity, monitoring of marine ecological environment, ocean dynamics, marine fishery development and management services. [0003] Phytoplankton particle size structure (PSC) is a parameter used to describe the essential characteristics of phytoplankton in water bodies, specifically referring to the mea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/13
Inventor 孙德勇丘仲锋环宇王胜强何宜军
Owner NANJING UNIV OF INFORMATION SCI & TECH
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