Profiling of SO2, NO2, and O3in the lower troposphere by multiwavelength differential absorption lidar

Takashi Fujii; Tetsuo Fukuchi; Takuya Nayuki; Hiroshi Hayami; Koshichi Nemoto; Nobuo Takeuchi

doi:10.1117/12.466157

Profiling of SO₂, NO₂, and O₃in the lower troposphere by multiwavelength differential absorption lidar

Takashi Fujii^*, Tetsuo Fukuchi, Takuya Nayuki, Hiroshi Hayami, Koshichi Nemoto, Nobuo Takeuchi

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

We performed SO₂, NO₂, and O₃ measurements in the lower troposphere using a multiwavelength differential absorption lidar (MDIAL) system. Measurement results are compared with results of airborne and ground-based in-situ measurements performed simultaneously with lidar measurement. Vertical concentration variation of SO₂ with 0-7 ppb for 1000-1700 m altitude was measured by dual-DIAL, and those of NO₂ and O₃ with 0-50 ppb for 700-2000 m altitude were measured by 2-wavelength DIAL quasi-simultaneously. Measurement results suggest that NO₂ was trapped below the inversion layer, which induced the reduction of O₃ concentration by the reaction with NO_X. Comparison of results obtained by DIAL and by in-situ methods showed that the MDIAL system had sufficient accuracy for verification of long-range transport models of sulfur compounds and for observation of chemical reactions of oxidants and nitrogen oxides. We also performed simultaneous profiling of NO₂ and O₃ in the lower troposphere using a stable, high power transmitter for NO₂ measurement. Concentration variations of NO₂ and O₃ for 900-1350 m altitude were measured for a continuous time interval of 24 hours without maintenance.

Original language	English
Pages (from-to)	132-140
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4893
DOIs	https://doi.org/10.1117/12.466157
Publication status	Published - 2003
Externally published	Yes
Event	Lidar Remote Sensing for Industry and Environment Monitoring III - Hangzhou, China Duration: 2002 Oct 24 → 2002 Oct 25

Keywords

Concentration profile
Differential absorption lidar
Dye laser
Inversion layer
Mixing layer
Nitrogen dioxide
Ozone
Sulfur dioxide
Sum frequency generation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.466157

Cite this

@article{aac5e72411a44f5ab5fc69ee749fa2ab,

title = "Profiling of SO2, NO2, and O3in the lower troposphere by multiwavelength differential absorption lidar",

abstract = "We performed SO2, NO2, and O3 measurements in the lower troposphere using a multiwavelength differential absorption lidar (MDIAL) system. Measurement results are compared with results of airborne and ground-based in-situ measurements performed simultaneously with lidar measurement. Vertical concentration variation of SO2 with 0-7 ppb for 1000-1700 m altitude was measured by dual-DIAL, and those of NO2 and O3 with 0-50 ppb for 700-2000 m altitude were measured by 2-wavelength DIAL quasi-simultaneously. Measurement results suggest that NO2 was trapped below the inversion layer, which induced the reduction of O3 concentration by the reaction with NOX. Comparison of results obtained by DIAL and by in-situ methods showed that the MDIAL system had sufficient accuracy for verification of long-range transport models of sulfur compounds and for observation of chemical reactions of oxidants and nitrogen oxides. We also performed simultaneous profiling of NO2 and O3 in the lower troposphere using a stable, high power transmitter for NO2 measurement. Concentration variations of NO2 and O3 for 900-1350 m altitude were measured for a continuous time interval of 24 hours without maintenance.",

keywords = "Concentration profile, Differential absorption lidar, Dye laser, Inversion layer, Mixing layer, Nitrogen dioxide, Ozone, Sulfur dioxide, Sum frequency generation",

author = "Takashi Fujii and Tetsuo Fukuchi and Takuya Nayuki and Hiroshi Hayami and Koshichi Nemoto and Nobuo Takeuchi",

year = "2003",

doi = "10.1117/12.466157",

language = "English",

volume = "4893",

pages = "132--140",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Lidar Remote Sensing for Industry and Environment Monitoring III ; Conference date: 24-10-2002 Through 25-10-2002",

}

TY - JOUR

T1 - Profiling of SO2, NO2, and O3in the lower troposphere by multiwavelength differential absorption lidar

AU - Fujii, Takashi

AU - Fukuchi, Tetsuo

AU - Nayuki, Takuya

AU - Hayami, Hiroshi

AU - Nemoto, Koshichi

AU - Takeuchi, Nobuo

PY - 2003

Y1 - 2003

N2 - We performed SO2, NO2, and O3 measurements in the lower troposphere using a multiwavelength differential absorption lidar (MDIAL) system. Measurement results are compared with results of airborne and ground-based in-situ measurements performed simultaneously with lidar measurement. Vertical concentration variation of SO2 with 0-7 ppb for 1000-1700 m altitude was measured by dual-DIAL, and those of NO2 and O3 with 0-50 ppb for 700-2000 m altitude were measured by 2-wavelength DIAL quasi-simultaneously. Measurement results suggest that NO2 was trapped below the inversion layer, which induced the reduction of O3 concentration by the reaction with NOX. Comparison of results obtained by DIAL and by in-situ methods showed that the MDIAL system had sufficient accuracy for verification of long-range transport models of sulfur compounds and for observation of chemical reactions of oxidants and nitrogen oxides. We also performed simultaneous profiling of NO2 and O3 in the lower troposphere using a stable, high power transmitter for NO2 measurement. Concentration variations of NO2 and O3 for 900-1350 m altitude were measured for a continuous time interval of 24 hours without maintenance.

AB - We performed SO2, NO2, and O3 measurements in the lower troposphere using a multiwavelength differential absorption lidar (MDIAL) system. Measurement results are compared with results of airborne and ground-based in-situ measurements performed simultaneously with lidar measurement. Vertical concentration variation of SO2 with 0-7 ppb for 1000-1700 m altitude was measured by dual-DIAL, and those of NO2 and O3 with 0-50 ppb for 700-2000 m altitude were measured by 2-wavelength DIAL quasi-simultaneously. Measurement results suggest that NO2 was trapped below the inversion layer, which induced the reduction of O3 concentration by the reaction with NOX. Comparison of results obtained by DIAL and by in-situ methods showed that the MDIAL system had sufficient accuracy for verification of long-range transport models of sulfur compounds and for observation of chemical reactions of oxidants and nitrogen oxides. We also performed simultaneous profiling of NO2 and O3 in the lower troposphere using a stable, high power transmitter for NO2 measurement. Concentration variations of NO2 and O3 for 900-1350 m altitude were measured for a continuous time interval of 24 hours without maintenance.

KW - Concentration profile

KW - Differential absorption lidar

KW - Dye laser

KW - Inversion layer

KW - Mixing layer

KW - Nitrogen dioxide

KW - Ozone

KW - Sulfur dioxide

KW - Sum frequency generation

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JF - Proceedings of SPIE - The International Society for Optical Engineering

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