The use of tunable diode laser absorption spectroscopy for atmospheric measurements

Schiff, H. I.; Mackay, G. I.; Bechara, J.

doi:10.1163/156856794x00441

Cited by 118 publications

(81 citation statements)

References 91 publications

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“…Nevertheless, a perturbating Fabry-Perot fringing [25] process was observed for some conditions of low temperature and pressure. This problem is probably due to the coupling of the laser with the optical fiber.…”

Section: Test Of Amulse In the Simeon Facilitymentioning

confidence: 99%

In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse

et al. 2017

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Section: Test Of Amulse In the Simeon Facilitymentioning

confidence: 99%

In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse

et al. 2017

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“…This methodology allows the measurement of the average air concentration of CO 2 on a profile length every few seconds [Schiff et al 1994, Tittel et al 2006, Weber et al 2005; simultaneously, the wind direction and speed are recorded by a sonic anemometer [Carapezza et al 2012]. TDL profiles were recorded at two heights, 20 and 25 cm from surface; two of them were over the lake and one was along the channel.…”

Section: Air Co 2 Concentrationmentioning

confidence: 99%

Atmospheric dispersion modelling of CO2 emission in the Colli Albani volcanic district (Central Italy)

Gasparini

Grandía

Tarchini³

2017

Annals of Geophysics

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“…Over the last years tunable diode laser absorption spectroscopy (TDLAS), particularly in the near infrared spectral range between 1 to 3 µm, had huge influence on the atmospheric hygrometry [34][35][36][37][38]. This reflects the unique properties of diode lasers (DL) like very high spectral resolution and spectral power density, continuous tunability, in combination with excellent technical properties, i.e.…”

Section: Airborne Hygrometrymentioning

confidence: 99%

Validation of an extractive, airborne, compact TDL spectrometer for atmospheric humidity sensing by blind intercomparison

et al. 2012

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Accuracy, precision, repeatability and long-term stability, are the most important requirements to enable reliable airborne humidity measurements, which are needed for climate models or to validate e.g. remote sensing instrumentation like satellites. However, various hygrometer artifacts which depend on the individual sensor principle and the application profile frequently cause problems and significantly complicate the hygrometer choice. Sensor intercomparisons are one way of providing the information for an optimal choice.In this paper we present the first part of a blind, static, laboratory-based intercomparison of a new, calibration-free, 1.4 µm diode laser-based, optical hygrometer (SEALDH) with the two most important measurement principles for airborne hygrometry (frost-point hygrometers, FPH, and Lyman-alpha fluorescence hygrometers, LAFH). During three days of measurement, the TDL-hygrometer achieved a H 2 O resolution of up to 0.5 ppmv ( t = 2 sec) at tropospheric pressure and H 2 O concentration levels (100- 800 hPa, 10 to 8000 ppmv H 2 O). Its absolute accuracy was investigated via blind intercomparison with two reference FPHs and a LAFH. Without any calibration of SEALDH, i.e. without a comparison to a water vapor standard, we achieve an excellent agreement with the reference sensors, with an average systematic offset (over all three days) of −3.9 % ± 1.5 %, which is fully consistent with the sensor's uncertainty bounds.BFurther we also reevaluated the SEALDH data of day 2 and 3 in a calibrated mode using an independent set of FPH data from the first day and found an 8-fold accuracy improvement, yielding an excellent overall relative deviation of only 0.52 % ± 1.5 % with respect to a LAFH and a D/FH sensor.

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The use of tunable diode laser absorption spectroscopy for atmospheric measurements

Cited by 118 publications

References 91 publications

In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse

In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse

Atmospheric dispersion modelling of CO2 emission in the Colli Albani volcanic district (Central Italy)

Validation of an extractive, airborne, compact TDL spectrometer for atmospheric humidity sensing by blind intercomparison

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