Articles with "trace gas" as a keyword



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On-Ground Performance and Calibration of the ExoMars Trace Gas Orbiter CaSSIS Imager

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Published in 2017 at "Space Science Reviews"

DOI: 10.1007/s11214-017-0404-2

Abstract: The European Space Agency’s ExoMars Trace Gas Orbiter (TGO) seeks to investigate the biological or geological origin of trace gases found on Mars. The TGO carries a payload of four instruments in order to reach… read more here.

Keywords: exomars trace; cassis; trace gas; calibration ... See more keywords

NOMAD, an Integrated Suite of Three Spectrometers for the ExoMars Trace Gas Mission: Technical Description, Science Objectives and Expected Performance

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Published in 2018 at "Space Science Reviews"

DOI: 10.1007/s11214-018-0517-2

Abstract: The NOMAD (“Nadir and Occultation for MArs Discovery”) spectrometer suite on board the ExoMars Trace Gas Orbiter (TGO) has been designed to investigate the composition of Mars’ atmosphere, with a particular focus on trace gases,… read more here.

Keywords: exomars trace; science objectives; science; trace gas ... See more keywords
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Density structures in the martian lower thermosphere as inferred by Trace Gas Orbiter accelerometer measurements

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Published in 2020 at "Icarus"

DOI: 10.1016/j.icarus.2020.114109

Abstract: Abstract ESA's Trace Gas Orbiter (TGO) undertook an aerobraking campaign to lower itself into the required science orbit. We present an overview of densities derived from TGO accelerometer data during aerobraking. With the addition of… read more here.

Keywords: gas orbiter; trace gas; density;
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The influence of the stratospheric Quasi-Biennial Oscillation on trace gas levels at the Earth’s surface

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Published in 2019 at "Nature Geoscience"

DOI: 10.1038/s41561-019-0507-3

Abstract: The Quasi-Biennial Oscillation (QBO) of tropical zonal wind is one of the most important modes of interannual variability in the stratosphere. It is well established that the QBO influences the distribution of trace gases throughout… read more here.

Keywords: trace; trace gas; surface; variability ... See more keywords
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No detection of methane on Mars from early ExoMars Trace Gas Orbiter observations

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Published in 2019 at "Nature"

DOI: 10.1038/s41586-019-1096-4

Abstract: The detection of methane on Mars has been interpreted as indicating that geochemical or biotic activities could persist on Mars today1. A number of different measurements of methane show evidence of transient, locally elevated methane… read more here.

Keywords: methane; trace gas; gas orbiter; exomars trace ... See more keywords
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First Year On-Orbit Calibration of the Chinese Environmental Trace Gas Monitoring Instrument Onboard GaoFen-5

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Published in 2020 at "IEEE Transactions on Geoscience and Remote Sensing"

DOI: 10.1109/tgrs.2020.2988573

Abstract: Environmental trace gas monitoring instrument (EMI) onboard GaoFen-5 was launched in May 2018 and has successfully operated on-orbit for more than a year. EMI contains four grating spectrometers, covering wavelengths in the range 240–710 nm… read more here.

Keywords: calibration; trace gas; monitoring; environmental trace ... See more keywords
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Fourier transform and grating-based spectroscopy with a mid-infrared supercontinuum source for trace gas detection in fruit quality monitoring.

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Published in 2021 at "Optics express"

DOI: 10.1364/oe.418072

Abstract: We present a multi-species trace gas sensor based on a fast, compact home-built Fourier transform spectrometer (FTS) combined with a broadband mid-infrared supercontinuum (SC) source. The spectrometer covers the spectral bandwidth of the SC source… read more here.

Keywords: gas; mid infrared; trace gas; spectroscopy ... See more keywords
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πFBG resonator used as a transducer for trace gas photothermal detection.

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Published in 2021 at "Optics express"

DOI: 10.1364/oe.437710

Abstract: We present an optical transduction method adapted to the detection of low frequency thermal perturbations and implemented for photothermal trace gas detection. The transducer is a π-phase shifted fiber Bragg grating, stabilized and interrogated by… read more here.

Keywords: gas; transducer; fbg resonator; trace gas ... See more keywords
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Cavity Ring-Down Spectroscopy for Molecular Trace Gas Detection Using A Pulsed DFB QCL Emitting at 6.8 µm

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Published in 2020 at "Photonics"

DOI: 10.3390/photonics7030074

Abstract: A trace gas sensor based on pulsed cavity ring-down spectroscopy (CRDS) was developed for measurement of the ν4 fundamental vibrational band of ammonia (NH3) centered at 1468.898 cm−1. A pulsed distributed feedback quantum cascade laser… read more here.

Keywords: ring spectroscopy; trace gas; dfb qcl; cavity ... See more keywords
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Seasonal characteristics of trace gas transport into the extratropical upper troposphere and lower stratosphere

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Published in 2019 at "Atmospheric Chemistry and Physics"

DOI: 10.5194/acp-19-7073-2019

Abstract: Abstract. To investigate the seasonal characteristics of trace gas distributions in the extratropical upper troposphere and lower stratosphere (ExUTLS) as well as stratosphere–troposphere exchange processes, origin fractions of air masses originating in the stratosphere, tropical… read more here.

Keywords: extratropical upper; characteristics trace; trace gas; upper troposphere ... See more keywords
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Calibration of isotopologue-specific optical trace gas analysers: a practical guide

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Published in 2018 at "Atmospheric Measurement Techniques"

DOI: 10.5194/amt-11-6189-2018

Abstract: Abstract. The isotopic composition of atmospheric trace gases such as CO2 and CH4 provides a valuable tracer for the sources and sinks that contribute to atmospheric trace gas budgets. In the past, isotopic composition has… read more here.

Keywords: trace; trace gas; isotopologue specific; calibration ... See more keywords