MODIS remote sensing monitoring method for vertical distribution pattern of eutrophic lake water algae

A vertical distribution and eutrophication technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as inland lakes where the assumed conditions are not applicable, and achieve the effect of improving practicability

Active Publication Date: 2015-02-25
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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Problems solved by technology

Although there are few studies on the vertical distribution of algae in eutrophic lakes based on measured data (Kutser et al. 2008), however, there are still rapid changes in the vertical distribution of algae in eutro

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  • MODIS remote sensing monitoring method for vertical distribution pattern of eutrophic lake water algae
  • MODIS remote sensing monitoring method for vertical distribution pattern of eutrophic lake water algae
  • MODIS remote sensing monitoring method for vertical distribution pattern of eutrophic lake water algae

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Embodiment Construction

[0056] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0057] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those concepts and embodiments described in more detail below, can be implemented in any of a number of ways, which should be the concepts and embodiments disclosed by the present invention and not Not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0058] The present invention provides a remote sensing method for...

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Abstract

The invention provides an MODIS remote sensing monitoring method for the vertical distribution pattern of eutrophic lake water algae. The method includes: acquiring the vertical distribution pattern of the algae by means of field monitoring; on the basis of field measured water surface spectral information and environmental information, creating a ground measured spectral data (Rrs) based remote sensing monitoring method for vertical algae distribution; acquiring the quantitative relationship between ground monitoring and remote sensing reflectance Rrs and simulated Rrc after Rayleigh scattering correction by simulating different aerosol types and thicknesses and different solar altitudes, satellite observation angles and azimuthal angles; further promoting the ground measured spectral data based monitoring method for vertical algae distribution to MODIS satellite image data subjected to Rayleigh scattering correction. On the basis of the method, interannual and inter-monthly change rules and spatial distribution of the vertical distribution pattern of the eutrophic lake water algae can be acquired accurately, and scientific support is provided for scientific decision-making on water resource management and water environment protection water conservancy and environmental protection departments.

Description

technical field [0001] The invention relates to a MODIS remote sensing monitoring method for vertical distribution types of algae in eutrophic lake water. Background technique [0002] In eutrophic water bodies, remote sensing has been widely used to monitor the extent and frequency of algal blooms (Bresciani et al. 2014; Hu 2009; Kahru et al. 2007; Kutser et al. 2006; Odermatt et al. 2012), A lot of work has also been done on the inversion of pigment concentration, for example, chlorophyll concentration (Duan et al. 2010; Song et al. 2013b), phycocyanin concentration (Duan et al. 2012; Song et al. 2013a), etc. Most of these works are based on the inversion of optical parameters of surface water or the assumption of vertical uniformity of water column. However, remote sensing signals reflect the vertical structure at a certain depth below the water surface, and only relying on the surface layer will introduce errors. [0003] The area of ​​algal blooms monitored by remote ...

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Application Information

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IPC IPC(8): G01N21/25
Inventor 张玉超马荣华段洪涛陈开宁
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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