The spectrum of Jupiter's Great Red Spot: The case for ammonium hydrosulfide (NH4SH)

Mark J. Loeffler; Reggie L. Hudson; Nancy J. Chanover; Amy A. Simon

doi:10.1016/j.icarus.2016.02.010

The spectrum of Jupiter's Great Red Spot: The case for ammonium hydrosulfide (NH₄SH)

Mark J. Loeffler, Reggie L. Hudson, Nancy J. Chanover, Amy A. Simon

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Here we present new ultraviolet-visible spectra of irradiated ammonium hydrosulfide (NH₄SH), a reported jovian atmospheric cloud component, for a range of temperatures and radiation doses and make assignments to the spectral features. We show that the combination of radiolysis and thermal annealing of NH₄SH causes the originally featureless ultraviolet-visible reflectance spectrum to evolve into one that absorbs in the ultraviolet-visible region. Furthermore, we find that our laboratory spectra resemble HST spectra below 500nm, suggesting that the more stable reaction products of NH₄SH radiolysis are likely an important component of the Great Red Spot.

Original language	English (US)
Pages (from-to)	265-268
Number of pages	4
Journal	Icarus
Volume	271
DOIs	https://doi.org/10.1016/j.icarus.2016.02.010
State	Published - Jun 1 2016
Externally published	Yes

Keywords

Atmospheres, chemistry
Experimental techniques
Geophysics
Ices, UV spectroscopy
Jupiter atmosphere

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1016/j.icarus.2016.02.010

Cite this

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title = "The spectrum of Jupiter's Great Red Spot: The case for ammonium hydrosulfide (NH4SH)",

abstract = "Here we present new ultraviolet-visible spectra of irradiated ammonium hydrosulfide (NH4SH), a reported jovian atmospheric cloud component, for a range of temperatures and radiation doses and make assignments to the spectral features. We show that the combination of radiolysis and thermal annealing of NH4SH causes the originally featureless ultraviolet-visible reflectance spectrum to evolve into one that absorbs in the ultraviolet-visible region. Furthermore, we find that our laboratory spectra resemble HST spectra below 500nm, suggesting that the more stable reaction products of NH4SH radiolysis are likely an important component of the Great Red Spot.",

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T1 - The spectrum of Jupiter's Great Red Spot

T2 - The case for ammonium hydrosulfide (NH4SH)

AU - Loeffler, Mark J.

AU - Hudson, Reggie L.

AU - Chanover, Nancy J.

AU - Simon, Amy A.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - Here we present new ultraviolet-visible spectra of irradiated ammonium hydrosulfide (NH4SH), a reported jovian atmospheric cloud component, for a range of temperatures and radiation doses and make assignments to the spectral features. We show that the combination of radiolysis and thermal annealing of NH4SH causes the originally featureless ultraviolet-visible reflectance spectrum to evolve into one that absorbs in the ultraviolet-visible region. Furthermore, we find that our laboratory spectra resemble HST spectra below 500nm, suggesting that the more stable reaction products of NH4SH radiolysis are likely an important component of the Great Red Spot.

AB - Here we present new ultraviolet-visible spectra of irradiated ammonium hydrosulfide (NH4SH), a reported jovian atmospheric cloud component, for a range of temperatures and radiation doses and make assignments to the spectral features. We show that the combination of radiolysis and thermal annealing of NH4SH causes the originally featureless ultraviolet-visible reflectance spectrum to evolve into one that absorbs in the ultraviolet-visible region. Furthermore, we find that our laboratory spectra resemble HST spectra below 500nm, suggesting that the more stable reaction products of NH4SH radiolysis are likely an important component of the Great Red Spot.

KW - Atmospheres, chemistry

KW - Experimental techniques

KW - Geophysics

KW - Ices, UV spectroscopy

KW - Jupiter atmosphere

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