High‐resolution spectroscopy of Mars at 3.7 and 8 μm: A sensitive search for H2O2, H2CO, HCl, and CH4, and detection of HDO

Krasnopolsky, V. A.; Bjoraker, G. L.; Mumma, M. J.; Jennings, D. E.

doi:10.1029/96je03766

Cited by 185 publications

(118 citation statements)

References 35 publications

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“…Many observations have been performed since 1988 (Bjoraker et al 1989;Krasnopolsky et al 1997;Encrenaz et al 2001), all consistent with the first detection. More recently, attempts to map D/H on Mars as a function of latitude and season have been performed by Novak et al (2011), Villanueva et al (2015), Krasnopolsky (2015), Aoki et al (2015) and Encrenaz et al (2016).…”

Section: Introductionmentioning

confidence: 83%

New measurements of D/H on Mars using EXES aboard SOFIA

Encrenaz

DeWitt

Richter

et al. 2018

A&A

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Section: Introductionmentioning

confidence: 83%

New measurements of D/H on Mars using EXES aboard SOFIA

Encrenaz

DeWitt

Richter

et al. 2018

A&A

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“…Formaldehyde (H 2 CO) is produced during the oxidation of methane, and could also be released through biogenic processes. Previous detection limit of 4.5 ppb and 3.9 ppb were reported by Krasnopolsky et al (1997) and Villanueva et al (2013) respectively. Figure 20 (Panel C) shows that NOMAD is able to observe H 2 CO up to 40 km altitude.…”

Section: Expected Performancementioning

confidence: 99%

“…b , Smith (2004), Smith et al (2009a). c Krasnopolsky et al (1997), Lodders and Fegley (1997), Owen et al (1977). d Krasnopolsky (2007), Smith et al (2009b).…”

Section: Water Cyclementioning

confidence: 99%

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

Vandaele¹,

Moreno²,

Patel³

et al. 2018

Space Sci Rev

114

117

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The NOMAD ("Nadir and Occultation for MArs Discovery") spectrometer suite on board the ExoMars Trace Gas Orbiter (TGO) has been designed to investigate the comThis paper is dedicated to the memory of M. Allen, V. Formisano, and J. McConnell. position of Mars' atmosphere, with a particular focus on trace gases, clouds and dust. The detection sensitivity for trace gases is considerably improved compared to previous Mars missions, compliant with the science objectives of the TGO mission. This will allow for a major leap in our knowledge and understanding of the Martian atmospheric composition and the related physical and chemical processes. The instrument is a combination of three spectrometers, covering a spectral range from the UV to the mid-IR, and can perform solar occultation, nadir and limb observations. In this paper, we present the science objectives of the instrument and explain the technical principles of the three spectrometers. We also discuss the expected performance of the instrument in terms of spatial and temporal coverage and detection sensitivity.

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“…They tentatively reported an average mixing ratio of -0.5 ppm. In 1997, Krasnopolsky et al [11] measured significantly less formaldehyde (-3 ppb) through a combination of 4 meter telescope at the Kitt Peak National [3] Observatory (KPNO) and Fourier transform spectrometer with Goddard Space Flight Center (GSFC) postdisperser. For the purposes of instrument design, we use the more conservative mixing ratio and assume that a detection limit of ~1 ppb is necessary.…”

Section: Introductionmentioning

confidence: 99%

A hollow-waveguide gas correlation radiometer for ultra-precise column measurements of formaldehyde on Mars

Wilson

Neveu

Riris

et al. 2011

Meas. Sci. Technol.

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Abstract. We present preliminary results in the development of a miniaturized gas correlation radiometer that implements a hollow-core optical fiber (hollow waveguide) gas correlation cell. The substantial reduction in mass and volume of the gas correlation cell makes this technology appropriate for an orbital mission Ð capable of pinpointing sources of trace gases in the Martian atmosphere. Here we demonstrate a formaldehyde (H2CO) sensor and report a detection limit equivalent to ~30 ppb in the Martian atmosphere. The relative simplicity of the technique allows it to be expanded to measure a range of atmospheric trace gases of interest on Mars such as methane (CH 4), water vapour (H2O), deuterated water vapour (HDO), and methanol (CH3OH). Performance of a formaldehyde instrument in a Mars orbit has been simulated assuming a 3 meter long, 1000 micron inner diameter hollow-core fiber gas correlation cell, a 92.8 degree sunsynchronous orbit from 400 km with a horizontal sampling scale of 10 km x 10 km. Initial results indicate that for one second of averaging, a detection limit of 1 ppb is possible.

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High‐resolution spectroscopy of Mars at 3.7 and 8 μm: A sensitive search for H₂O₂, H₂CO, HCl, and CH₄, and detection of HDO

Cited by 185 publications

References 35 publications

New measurements of D/H on Mars using EXES aboard SOFIA

New measurements of D/H on Mars using EXES aboard SOFIA

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

A hollow-waveguide gas correlation radiometer for ultra-precise column measurements of formaldehyde on Mars

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