Development of a laser for differential absorption lidar measurement of atmospheric carbon dioxide

Abstract

In the quest for a better understanding of climate change, greater importance is attached to monitoring the levels of atmospheric carbon dioxide to gain an improved knowledge of sources and sinks. Remote sensing is a critical tool in this research area and differential absorption lidar (DIAL) is one important technique. The laser is the critical component of a DIAL instrument. This paper describes the development of a laser source for the detection and measurement of carbon dioxide.

Detección De Agentes Químicos

“…Ambas longitudes de onda deben ser cercanas, para evitar líneas de absorción de moléculas interferentes. (Robinson et al, 2014). Ambos pulsos láser son emitidos, atraviesan la nube química, se reflejan en alguna característica del terreno y son nuevamente recibidos por el equipo.…”

The detection of carbon dioxide leaks using quasi-tomographic laser absorption spectroscopy measurements in variable wind

“…The function µ J ( f ) relates the plume parameters to the observations of the column density of CO 2 . We take the distance–transmission relation to be Beer’s Law: $${\mu }_J={\mu }_J^{\left(0\right)}{e}^{-P_J},$$ where ${\mu }_J^{\left(0\right)}$ is the mean of a Poisson distribution giving the source strength for observation J , and P J is the projection through the concentration of gas, i.e., the integral of the concentration times the absorption cross section (Robinson et al, 2014) along the straight-line path of the light.…”

Remote Sensing of Atmospheric Methane with IR OPO Lidar System

“…This is one of the steps in the design of a multicomponent gas analysis system based on the radiation source described in [8]. A diode-pumped KTP OPO Nd:YLF laser has been designed and used in the 2-km path integral measurements of carbon dioxide concentration [9]. As a result of further research, a system suitable for field measurements has been created, which allows automated detection of CO 2 and CH 4 in three dimensions [10].…”