Open-path quantum cascade laser-based system for simultaneous remote sensing of methane, nitrous oxide, and water vapor using chirped-pulse differential optical absorption spectroscopy

2015 ◽  
Author(s):  
Paulo Castillo ◽  
Adrian Diaz ◽  
Benjamin Thomas ◽  
Barry Gross ◽  
Fred Moshary
Keyword(s):  
Remote Sensing ◽  
Nitrous Oxide ◽  
Water Vapor ◽  
Optical Absorption ◽  
Absorption Spectroscopy ◽  
Quantum Cascade Laser ◽  
Differential Optical Absorption Spectroscopy ◽  
Optical Absorption Spectroscopy ◽  
Chirped Pulse ◽  
Quantum Cascade

scholarly journals Spatially resolved measurements of nitrogen dioxide in an urban environment using concurrent multi-axis differential optical absorption spectroscopy

2006 ◽  
Vol 6 (6) ◽  
pp. 12671-12700
Author(s):  
R. J. Leigh ◽  
G. K. Corlett ◽  
U. Frieß ◽  
P. S. Monks
Keyword(s):  
Remote Sensing ◽  
Optical Absorption ◽  
Nitrogen Dioxide ◽  
Urban Environment ◽  
Absorption Spectroscopy ◽  
Differential Optical Absorption Spectroscopy ◽  
Optical Absorption Spectroscopy ◽  
High Time Resolution ◽  
In Situ Techniques

Abstract. A novel system using the technique of concurrent multi-axis differential optical absorption spectroscopy system has been developed and applied to the measurement of nitrogen dioxide in an urban environment. Using five fixed telescopes, slant columns of nitrogen dioxide, ozone, water vapour, and the oxygen dimer, O4, are simultaneously retrieved in five vertically separated viewing directions. The application of this remote sensing technique in the urban environment is explored. Through, the application of several simplifying assumptions a tropospheric concentration of NO2 is derived and compared with an urban background in-situ chemiluminescence detector. The remote sensing and in-situ techniques show good agreement. Owing to the high time resolution of the measurements, the ability to image and quantify plumes within the urban environment is demonstrated. The CMAX-DOAS measurements provide a useful measure of overall NO2 concentrations on a city-wide scale.

Measurement of Atmospheric Water Vapor Column Density with Passive Differential Optical Absorption Spectroscopy Technology

2013 ◽  
Vol 33 (8) ◽  
pp. 0801002
Author(s):  
刘进 Liu Jin ◽  
司福祺 Si Fuqi ◽  
周海金 Zhou Haijin ◽  
赵敏杰 Zhao Minjie ◽  
窦科 Dou Ke ◽  
...  
Keyword(s):  
Water Vapor ◽  
Optical Absorption ◽  
Absorption Spectroscopy ◽  
Column Density ◽  
Differential Optical Absorption Spectroscopy ◽  
Atmospheric Water Vapor ◽  
Optical Absorption Spectroscopy ◽  
Atmospheric Water
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