Wavelength dependence of dust aerosol single scattering albedo as observed by the Compact Reconnaissance Imaging Spectrometer

Wolff, Michael; Smith, M. D.; Clancy, R. T.; Arvidson, R. E.; Kahre, M. A.; Seelos, Frank P.; Murchie, S. L.; Savijärvi, Hannu

doi:10.1029/2009je003350

Cited by 245 publications

(314 citation statements)

References 46 publications

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“…The spectral regions probed by NOMAD/UVIS, SO (red frames) and LNO (dashed line) are also indicated. The refractive indexes that are adopted for the Mie computation are from Warren and Brandt (2008) for H 2 O ice, from Wolff et al (2009Wolff et al ( , 2010 for Martian dust and from Hansen (1997Hansen ( , 2005 for CO 2 ice. The particle size distribution used is a log-normal distribution with r eff = 0.2 µm corresponding to the fundamental ν 3 band of CO 2 ice, that leads to a strong variation of the extinction with wavelength in the 4.0-4.5 µm region (Fig.…”

Section: Expected Performancementioning

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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Section: Expected Performancementioning

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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“…-Use of improved dust radiative properties derived by [10]. -Improved representation of dust vertical distribution and particle size [5].…”

Section: Recent Improvements In the Lmd Gcmmentioning

confidence: 99%

The Mars Climate Database (version 4.3)

Millour

Forget

González‐Galindo

et al. 2009

SAE Technical Paper Series

119

170

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The Mars Climate Database (MCD) is a database of meteorological fields derived from General Circulation Model (GCM) numerical simulations [2,4] of the Martian atmosphere and validated using available observational data. The MCD includes complementary post-processing schemes such as high spatial resolution interpolation of environmental data and means of reconstructing the variability thereof.The GCM is developed at LMD (Laboratoire de Météorologie Dynamique, Paris, France) in collaboration with several teams in Europe: LATMOS (Laboratoire Atmosphères, Milieux, Observations Spatiales, Paris, France), the Open University (UK), the Oxford University (UK) and the Instituto de Astrofisica de Andalucia (Spain) with support from the European Space Agency (ESA) and the Centre National d'Etudes Spatiales (CNES).The MCD is freely distributed and intended to be useful and used in the framework of engineering applications as well as in the context of scientific studies which require accurate knowledge of the state of the Martian atmosphere.The Mars Climate Database (MCD) has over the years been distributed to more than 150 teams around the world. With the many improvements implemented in the GCM over the last few years, a new series of reference simulations have been run and compiled in a new version (version 5) of the Mars Climate Database, released in the first half of 2012. Recent improvements in the LMD GCMFor more than twenty years, our teams have joined forces to develop the most realistic GCM to accurately model the martian atmosphere and climate. It has now matured to the point of being a "Mars System Model" capable of simulating the CO2 cycle, the dust cycle, the water cycle, the release and transport of radon, water isotopes cycle, the martian thermosphere and ionosphere, etc.Ongoing efforts have been made to improve our GCM and key recent improvements over the last few years include:-Updated schemes for the upper atmosphere:an improved computation of thermal cooling rates, a better treatment of radiative transfer in the 15-um bands, an enhanced solar heating rate model and an improved molecular diffusion scheme have been implemented [3].

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“…This optical depth record has been used as "ground truth" results in many studies, such as Wolff et al (2009), Wolff et al (2010 or Montabone et al (2015). More recently, images of the Sun by the Mastcam instrument onboard MSL Curiosity rover are providing new aerosol opacity values at the MSL landing site.…”

Section: Dust Opacity Measurements On Marsmentioning

confidence: 99%

“…We have selected the refractive indices calculated by Wolff et al (2009) and Wolff et al (2010). The model assumes a log-normal particle size distribution, which is characterized by the effective radius and the dimensionless effective variance (Hansen and Travis, 1974).…”

Section: Comimart Radiative Transfer Model: Description and Sensitivimentioning

confidence: 99%

Variabilidad estacional e interanual de la radiación solar en las coordenadas de aterrizaje de Spirit, Opportunity y Curiosity

et al. 2016

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In this article we characterize the radiative environment at the landing sites of NASA's Mars Exploration Rover (MER) and Mars Science Laboratory (MSL) missions. We use opacity values obtained at the surface from direct imaging of the Sun and our radiative transfer model COMIMART to analyze the seasonal and interannual variability of the daily irradiation at the MER and MSL landing sites. In addition, we analyze the behavior of the direct and diffuse components of the solar radiation at these landing sites. Key words: Solar radiation; Mars Exploration Rovers; Mars Science Laboratory; opacity, dust; radiative transfer model; Mars exploration.Variabilidad estacional e interanual de la radiación solar en las coordenadas de aterrizaje de Spirit, Opportunity y Curiosity ResumenEl presente artículo está dedicado a la caracterización del entorno radiativo en los lugares de aterrizaje de las misiones de la NASA de Mars Exploration Rover (MER) y de Mars Science Laboratory (MSL). Se hace uso de las opacidades obtenidas a partir de imágenes directas del Sol y de nuestro modelo de transferencia radiativa COMIMART con el fin de analizar la variabilidad estacional e interanual de la irradiación diaria en las coordenadas de aterrizaje de los MER y de MSL. Asimismo, se analiza el comportamiento de las componentes directa y difusa de la radiación solar en estos lugares de aterrizaje. IntroductionThe study of the radiation environment at the Martian surface is important because of the role that solar radiation plays in constraining the habitability of Mars and in driving its atmospheric dynamics. Ultraviolet radiation has the potential to damage the DNA (Córdoba-Jabonero et al.,, 2003) while solar radiation feeds atmospheric thermodynamic processes occurring in the first meters of the Martian atmosphere, the so-called planetary boundary layer.In this article we study the variability of the daily irradiation at the surface (also called insolation and defined as the total amount of solar energy received during one sol) at the landing sites of MER Spirit (14.57ºS, 175.48ºE) and Opportunity (1.95°S, 354.47°E) and MSL Curiosity (4.59ºS, 137.44ºE) rovers on seasonal and interannual time scales. We also discuss the variability of the diffuse and direct components of the insolation at these three locations.In section 1 we review several efforts to retrieve dust opacity both from satellites and ground measurements, and we show the opacities at the Spirit, Opportunity and Curiosity landing sites. In section 2 we describe our COmplutense and MIchigan MArs Radiative Transfer model (COMIMART) and perform sensitivity studies to validate the assumption of using atmospheric optical depths as dust opacities. In section 3 we analyze the behavior of the total radiation at the top of the atmosphere. In section 4 we characterize the radiative environment at the three selected landing sites. Finally, we highlight our main conclusions in section 5.

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Wavelength dependence of dust aerosol single scattering albedo as observed by the Compact Reconnaissance Imaging Spectrometer

Cited by 245 publications

References 46 publications

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

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

The Mars Climate Database (version 4.3)

Variabilidad estacional e interanual de la radiación solar en las coordenadas de aterrizaje de Spirit, Opportunity y Curiosity

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