Measurement of the ozone concentration in the lower troposphere by a differential absorption lidar system

Bukreev, V. S.; Vartapetov, S. K.; Veselovskii, Igor; Shablin, Yu S

doi:10.1070/qe1996v026n04abeh000670

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…• Differential absorption lidar (DIAL) (13)(14)(15)(16)(17)(18)(19) • Tunable diode laser absorption spectroscopy (TDLAS) (20)(21)(22)(23)(24) • Open-path Fourier-transform spectroscopy (25) Alternative Techniques. Because of the limitations of traditional absorption spectrometry, various alternative techniques have been developed in an attempt to improve the detection of gaseous species.…”

Section: The Need For Gas-phase Absorption Measurementsmentioning

confidence: 99%

Introduction to Cavity-Ringdown Spectroscopy

Busch

1999

ACS Symposium Series

100

122

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Cavity-ringdown spectroscopy is an alternative way of measuring small fractional absorptions down to sub-ppm levels per pass in the cavity.In this chapter, the basic principles behind cavity-ringdown spectroscopy are discussed. The areas where ultra-sensitive absorption measurements in the gas phase are important are illustrated, and existing methods of making these measurements are presented. The experimental requirements for performing cavity-ringdown spectroscopy are discussed, and an expression for the detection limit in cavity-ringdown spectroscopy is derived from statistical considerations. Finally, future prospects for the technique are discussed.Cavity-ringdown spectroscopy is an alternative way of making ultra-sensitive absorption measurements, particularly with gas-phase samples. This volume will discuss the research being conducted on cavity-ringdown spectroscopy by the leading research groups in the area. In the chapters that follow, various aspects of the cavity-ringdown experiment will be discussed and its applications described. Although the origins of the technique can be traced back to attempts to measure mirror reflectivities in the early 1980s (1-4), the spectroscopic application of the concept has only recently been reviewed (5,6) and is still not widely known to the general scientific community. Because the technique can provide the ability to measure small fractional absorptions (down to sub-ppm levels per pass), it should be of interest to broad segments of the analytical-, physical-, and engineering communities. This includes analytical chemists, spectroscopists, physical chemists doing laser spectroscopy and molecular beam work, combustion scientists, atmospheric chemists, and chemical engineers involved with process measurements-in fact, anyone involved with measuring trace components in gas-phase samples by absorption spectroscopy.This chapter will provide a basic introduction to cavity-ringdown spectroscopy for the reader who is not familiar with the technique. The intent is to show the basic principles of the technique without introducing undue mathematical complexity at the outset. However, before describing the technique, it is worthwhile to review some of the areas where sensitive gas-phase absorption measurements are important.

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Section: The Need For Gas-phase Absorption Measurementsmentioning

confidence: 99%

Introduction to Cavity-Ringdown Spectroscopy

Busch

1999

ACS Symposium Series

100

122

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“…In this spectral range, the absorption cross-section σ is several times larger than for wavelengths used in stratospheric measurements (e.g., σ299 = 4.4 10 -19 cm 2 for the wavelength λon = 299 nm and σ308 = 1.4 10 -19 cm 2 for λon = 308 nm). KrF laser radiation (248 nm) or the fourth harmonics of an Nd:YAG laser (266 nm) is usually used for measurements of tropospheric ozone, in combination with a technique based on the stimulated Raman scattering (SRS) in H2, D2, СО2, and other gases [4,5,7,15]. The most common are hydrogen and deuterium.…”

Section: Selection Of Wavelengthsmentioning

confidence: 99%

A technique for retrieval of ozone vertical distribution from DIAL measurements

et al. 2016

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The paper introduces the technique of recovering profiles of ozone vertical distribution considering temperature and aerosol correction in atmosphere lidar sounding by DIAL. The authors have determined wavelengths, promising to measure ozone profiles in the upper troposphere -lower stratosphere. To obtain promptly the results of the methodology the authors developed the software based on DIAL with user-friendly interface in the programming language C# using the lidar measurements. The recovered ozone profiles, resulting from the program operation, were compared with IASI satellite data and Kruger model. The results of applying the developed technique to recover the profiles of ozone vertical distribution considering temperature and aerosol correction in the altitude range of 6-18 km in lidar atmosphere sounding by DIAL confirm the prospects of using the selected wavelengths of ozone sensing 341 and 299 nm in the ozone lidar.

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