UV‐Visible Differential Optical Absorption Spectroscopy (DOAS)

Plane, John Mc; Saiz‐Lopez, Alfonso

doi:10.1002/9780470988510.ch3

Cited by 46 publications

(27 citation statements)

References 172 publications

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“…Passive differential optical absorption spectroscopy (DOAS) has been successfully applied since the 1970s to retrieve numerous trace gases, including NO 2 , from ground-based and satellite instruments (Noxon, 1975;Noxon et al, 1979;Mount et al, 1987;Solomon et al, 1987;Platt et al, 1979;Platt, 1994;Plane and Smith, 1995). While all passive DOAS measurements contain information about gas absorption at all atmospheric altitudes, different observation geometries have been developed to optimize the sensitivity of the passive DOAS instruments to trace gas amounts located in various layers of the atmosphere.…”

Section: Differential Optical Absorption Spectroscopymentioning

confidence: 99%

The use of NO2 absorption cross section temperature sensitivity to derive NO2 profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

et al. 2014

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Abstract. This paper presents a temperature sensitivity method (TESEM) to accurately calculate total vertical NO 2 column, atmospheric slant NO 2 profile-weighted temperature (T ), and to separate stratospheric and tropospheric columns from direct-sun (DS), ground-based measurements using the retrieved T . TESEM is based on differential optical absorption spectroscopy (DOAS) fitting of the linear temperature-dependent NO 2 absorption cross section, σ (T ), regression model (Vandaele et al., 2003). Separation between stratospheric and tropospheric columns is based on the primarily bimodal vertical distribution of NO 2 and an assumption that stratospheric effective temperature can be represented by temperature at 27 km ± 3 K, and tropospheric effective temperature is equal to surface temperature within 3-5 K. These assumptions were derived from the Global Modeling Initiative (GMI) chemistry-transport model (CTM) simulations over

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Section: Differential Optical Absorption Spectroscopymentioning

confidence: 99%

The use of NO2 absorption cross section temperature sensitivity to derive NO2 profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

et al. 2014

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“…BrO and IO. BrO and IO were measured using the technique of Differential Optical Absorption Spectroscopy [Plane and Smith, 1995]. The DOAS instrument, which has been described in detail previously [Carslaw et al, 1997a[Carslaw et al, , 1997b, has the transmitting and receiving optics housed coaxially within a single Newtonian telescope.…”

Section: Field Measurementsmentioning

confidence: 99%

Quasi‐Lagrangian investigation into dimethyl sulfide oxidation in maritime air using a combination of measurements and model

James¹,

Harrison²,

Savage³

et al. 2000

J. Geophys. Res.

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Abstract. Using a combination of field measurement data and a modified photochemical box model, strong evidence is presented to suggest that the rate of daytime oxidation of dimethyl sulfide (DMS) by OH radicals is insufficient to describe the measured conversion. QuasiLagrangian measurements were made at two sites in the eastern Atlantic (Research Vessel and Mace Head Research Station, Ireland) as part of the Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) program, Periods of connected flow between the two sites were identified, air parcel transit times were estimated, and measurements of the main DMS oxidation products (MSA, SO2, and nss-8042-) were compared with model predictions to establish whether the model's chemical mechanism could account for observed changes. The main finding was that during daytime periods with maritime air masses, the model failed to predict a sufficient increase in DMS oxidation products during the estimated transit time. This was despite a tendency to overprediction of the progress of nitrogen chemistry during air mass advection, and independent checks on the model estimates of hydroxyl radical concentrations through measurements. In the light of this, the involvement of halogen species (most probably halogen oxides) or heterogeneous oxidation processes is tentatively suggested as the cause of enhanced daytime DMS oxidation in the marine boundary layer (MBL). Increasing the rate constant for the OH + DMS reaction by a factor of 3.3 (as a crude way of simulating parallel channels of DMS oxidation) permitted model results to reproduce the measurements very much more closely.

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“…Long pathlength differential optical absorption spectroscopy (DOAS) [Plane and Smith, 1995] or differential absorption Lidar (DIAL) [Thomas, 1995] techniques require knowledge of absolute absorption cross sections of all absorbers in the spectral region of interest to retrieve accurate column abundances and distributions. Molecular oxygen (02) is an abundant species with an approximately constant mixing ratio in the lower and middle atmosphere, and although retrieval of O: and 04 may not in itself be of interest, the molecular absorption and emission (in the upper atmosphere) characteristics in the near-infrared, visible, and nearultraviolet regions must be accounted for in retrievals of trace chemical species.…”

Section: Paper Number 98jd02799mentioning

confidence: 99%

Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O₂ and O₄)

Newnham¹,

Ballard²

1998

J. Geophys. Res.

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Abstract. Absorption spectra of gas-phase molecular oxygen and zero air at temperatures of 223 and 283 K have been measured in the laboratory using a coolable multipass-optics gas cell and Fourier transform spectroscopy in the wavelength range 455 to 830 nm (12,000-22,000 cm-•). Net absorption cross sections of the O2 A-, B-, and T-bands at <0.002 nm spectral resolution, and pressures of 100 and 1000 hPa zero air have been determined. Binary absorption cross sections of the collision-induced 04 bands at <0.18 nm spectral resolution and a pressure of 1000 hPa pure oxygen have been determined, with corrections for the O2 T-band absorption. Calculated integrated absorption intensities and, for the O2 A-and B-bands, "effective" Einstein A-coefficients are compared with previous literature values. IntroductionThe near-infrared and visible spectrum of gas-phase molecular oxygen is characterized by (1) discrete structured ro-

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UV‐Visible Differential Optical Absorption Spectroscopy (DOAS)

Cited by 46 publications

References 172 publications

The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Quasi‐Lagrangian investigation into dimethyl sulfide oxidation in maritime air using a combination of measurements and model

Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O₂ and O₄)

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UV‐Visible Differential Optical Absorption Spectroscopy (DOAS)

Cited by 46 publications

References 172 publications

The use of NO&lt;sub&gt;2&lt;/sub&gt; absorption cross section temperature sensitivity to derive NO&lt;sub&gt;2&lt;/sub&gt; profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

The use of NO&lt;sub&gt;2&lt;/sub&gt; absorption cross section temperature sensitivity to derive NO&lt;sub&gt;2&lt;/sub&gt; profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Quasi‐Lagrangian investigation into dimethyl sulfide oxidation in maritime air using a combination of measurements and model

Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O2 and O4)

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The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Visible absorption cross sections and integrated absorption intensities of molecular oxygen (O₂ and O₄)