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Space-based active gas flux detection method and device

An active detection and gas technology, applied in measurement devices, radio wave measurement systems, climate sustainability, etc., can solve the problems of error, low spatial and temporal resolution, lack of active direct detection methods of space-based flux, etc., to achieve high detection Accuracy, reduction of problems based on assumptions and estimates, effects of high sensitivity

Active Publication Date: 2021-06-22
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

[0006] The present invention solves the problem that the current atmospheric boundary layer gas lacks the space-based flux active direct detection method, and the gas flux inversion has large errors and low temporal and spatial resolution only through column concentration measurement assimilation and inversion.

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  • Space-based active gas flux detection method and device
  • Space-based active gas flux detection method and device
  • Space-based active gas flux detection method and device

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Embodiment Construction

[0056] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0057] Fluxes from the atmosphere to the Earth's surface, and from the Earth's surface to the atmosphere, must pass through the ABL and have a considerable influence on the state of the ABL. Due to the proximity to the Earth's surface, the average vertical motion in the atmospheric boundary layer is usually small and the turbulent flux becomes the dominant flux in the atmospheric boundary layer. In addition, the near-Earth boundary layer is the main level of interaction between the biosphere, the hydrosphere and the atmosphere and the channel for the flux of energy, water vapor, carbon dio...

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Abstract

The invention provides a space-based active gas flux detection method and device, and the method comprises the steps: transmitting first detection laser and second detection laser to a to-be-detected region, and receiving echo signals of the first detection laser and the second detection laser; obtaining atmosphere wind field profile information and gas concentration profile information through inversion according to the echo signals; according to the atmosphere wind field profile information, the gas concentration profile information and a preset atmosphere boundary layer flux calculation method, directly obtaining atmosphere boundary layer gas flux information of the to-be-detected area. According to the embodiment of the invention, not only is the blank of current space-based flux active detection made up, but also high-temporal-spatial-resolution measurement of atmospheric three-dimensional motion can be carried out, the problems based on hypothesis and estimation in the existing method are reduced, direct observation of global multi-scale, high-quality and long-sequence gas flux is realized, and meanwhile, the method also has the characteristics of high detection precision, high spatial resolution and high sensitivity.

Description

technical field [0001] The invention relates to the technical field of atmospheric boundary layer flux detection, in particular to a space-based method and device for actively detecting gas flux. Background technique [0002] Fluxes based on momentum, energy, and matter are important links between different components of the Earth system. Flux observations are of great significance for understanding the exchange of energy and matter in various spheres and revealing the carbon cycle process. Based on the development of turbulence theory, the method of calculating the surface gas flux is also continuously improved. [0003] In recent years, with the development of lidar detection systems, Doppler lidar systems and differential absorption lidar systems have also been effectively used to measure gas concentrations and average wind speeds, so they can be applied to directly detect gas fluxes in the atmospheric boundary layer. [0004] The existing ground detection system is diff...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/95
CPCG01S17/95Y02A90/10
Inventor 姚伟王磊马蓉张思勃胡洛佳于志同
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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