Errors analysis of dioxide carbon concentrations measurement by airborne lidar

Shi Chenglong; Liu Jiqiao; Bi Decang; Li Shiguang; Liu Dan; Chen Weibiao

doi:10.3788/IRLA201645.0530001

Differential absorption lidar is an effective methods for high-precision CO2 concentration measurements. In this paper, the major error sources of airborne differential absorption lidar CO2 measurement were studied, and CO2 concentration errors caused by them were analyzed. The airborne differential absorption lidar principle was introduced first, CO2 concentration errors from atmospheric temperature, pressure and water vapor uncertainties, laser frequency stability and the aircraft speed and attitude measurements uncertainties, as well as random error were analyzed. The results show that airborne differential absorption lidar measured CO2 column concentration error is about 0.71 ppm(1 ppm=10-6) for 380 ppm atmosphere CO2 concentration, which meets the 1 ppm accuracy requirement of CO2 concentration measurement.

Errors analysis of dioxide carbon concentrations measurement by airborne lidar

1. Key Laboratory of Space Laser Communication and Detection Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2015-09-10

Rev Recd Date: 2015-10-10

Publish Date: 2016-05-25

Key words:

CO2 concentration /
integrated path differential absorption (IPDA) /
airborne lidar /
error

Abstract: Differential absorption lidar is an effective methods for high-precision CO2 concentration measurements. In this paper, the major error sources of airborne differential absorption lidar CO2 measurement were studied, and CO2 concentration errors caused by them were analyzed. The airborne differential absorption lidar principle was introduced first, CO2 concentration errors from atmospheric temperature, pressure and water vapor uncertainties, laser frequency stability and the aircraft speed and attitude measurements uncertainties, as well as random error were analyzed. The results show that airborne differential absorption lidar measured CO2 column concentration error is about 0.71 ppm(1 ppm=10-6) for 380 ppm atmosphere CO2 concentration, which meets the 1 ppm accuracy requirement of CO2 concentration measurement.

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Reference (10)

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Errors analysis of dioxide carbon concentrations measurement by airborne lidar

doi: 10.3788/IRLA201645.0530001

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