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Method and device for synchronously measuring flux of greenhouse gas on water surface of reservoir on multiple points

A greenhouse gas, synchronous measurement technology, applied in measurement devices, surface/boundary effects, instruments, etc., can solve problems such as spatial inhomogeneity of greenhouse gas emissions, and achieve the goal of avoiding greenhouse gas release, reducing work intensity, and saving measurement time. Effect

Active Publication Date: 2012-12-26
CHINA THREE GORGES CORPORATION
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Problems solved by technology

The geographical environment of shallow water areas, especially the land-water transition zone, is usually relatively complex, and the spatial inhomogeneity of greenhouse gas emissions is particularly prominent. When using the box method to measure and estimate regional greenhouse gas emissions, there is currently no good method except for multiple measurements at dense measurement points

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  • Method and device for synchronously measuring flux of greenhouse gas on water surface of reservoir on multiple points
  • Method and device for synchronously measuring flux of greenhouse gas on water surface of reservoir on multiple points
  • Method and device for synchronously measuring flux of greenhouse gas on water surface of reservoir on multiple points

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Embodiment 1

[0029] This embodiment provides a multi-point synchronous measurement device for greenhouse gas flux on the water surface of a reservoir, the structure of which is as follows: image 3 As shown, the measurement box 1 is included, and the auxiliary floating frame 2 is arranged outside the box. A plurality of measurement boxes 1 can form a measurement group through the connection of the floating frame 2. Among them: the measurement box is a cylinder of plastic material with a bottom diameter of 25cm and a height of 20cm. The wall thickness of the cylinder is about 2mm, and its surface is completely covered with a tin foil reflective material layer. There are two gas sample holes with a diameter of 4mm on the box. . The outside of the measurement box 1 is provided with an auxiliary floating frame 2, the central part of which is a ring-shaped structure of plastic material with an inner diameter of 35 cm and a thickness of about 2 cm. The four legs are adjustable hollow plastic rod...

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Abstract

The invention discloses a method and corresponding device for synchronously measuring the flux of discharged greenhouse gas on the water surface of a reservoir on multiple points. The method comprises the following steps: arranging a plurality of measurement points dispersedly, premeasuring according to the clustering and sampling principle to evaluate the characteristic of the measured region, switching corresponding measurement modes, sampling synchronously on multiple points to obtain the samples with good representativeness, and transmitting the measurement result into a data processing unit by an instrument, wherein the data processing unit can control the mixing form of the gas samples by controlling a mixing device, so that the switching of quick measurement form and accurate measurement form is realized.

Description

technical field [0001] The invention relates to a method and device for monitoring gas discharge flux on a water surface, and is especially suitable for quick measurement of greenhouse gas discharge or absorption at a water-air interface in a slow flow state such as a reservoir. Background technique [0002] The static box method is a simple and easy-to-operate method for observing the gas flux at the water-air interface. In this method, a box with a sealed top and a central opening is placed on the surface of the water body to collect the carbon dioxide and methane to be tested in the form of diffusion from the surface water body, and measure the concentration of the gas to be tested in the box at regular intervals. to calculate the emission flux of the gas to be measured in the covered waters. The static box method has been widely used due to its low cost, good portability, and convenient connection with on-line analytical instruments. But the current static box method a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01N13/04
Inventor 戴会超毛劲乔张末蒋定国
Owner CHINA THREE GORGES CORPORATION
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