Mars Science Laboratory diurnal moisture observations and column simulations

Savijärvi, Hannu; Harri, A. M.; Kemppinen, Osku

doi:10.1002/2014je004732

Cited by 36 publications

(31 citation statements)

References 36 publications

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“…Additionally, near-surface fog was imaged by the Mars Express High Resolution Stereo Camera in Valles Marineris (∼10°S) (Möhlmann et al 2009). At the MSL site, indirect evidence for frost formation on a few sols during late fall and early winter in MY 32 has been provided from the analysis of relative humidity and ground temperature measurements , further supported by numerical modeling (Savijärvi et al 2015;Steele et al 2017). …”

Section: Near-surface Relative Humidity and Water Vapor Contentmentioning

confidence: 88%

“…Processed PHX/TECP atmospheric RH values are not available in the NASA PDS (Sect. 2.4), while MSL/REMSderived daytime VMR values present large uncertainties and cannot be used to address the diurnal cycle (Savijärvi et al 2015;. However, the strong correlation between REMS-derived nighttime VMR values and surface and near-surface temperature values at Gale crater can be used to shed some light on the exchange of water between the regolith and the atmosphere.…”

Section: Improving Our Understanding Of the Dust And H 2 O Cyclesmentioning

confidence: 99%

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The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

et al. 2017

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We analyze the complete set of in-situ meteorological data obtained from the Viking landers in the 1970s to today's Curiosity rover to review our understanding of the modern near-surface climate of Mars, with focus on the dust, CO 2 and H 2 O cycles and their impact on the radiative and thermodynamic conditions near the surface. In particular, we provide values of the highest confidence possible for atmospheric opacity, atmospheric pressure, near-surface air temperature, ground temperature, near-surface wind speed and direction, and near-surface air relative humidity and water vapor content. Then, we study the diurnal, seasonal and interannual variability of these quantities over a span of more thanThe original version of this article was revised because due to an unfortunate turn of events a wrong value was published in Table 1. The resolution of the PHX pressure sensor was published as "0.1 mbar" whereas this value has now been corrected to "0.1 Pa" which is the correct value and should be regarded as the final version by the reader. B G.M. Martínez

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Section: Near-surface Relative Humidity and Water Vapor Contentmentioning

confidence: 88%

Section: Improving Our Understanding Of the Dust And H 2 O Cyclesmentioning

confidence: 99%

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

et al. 2017

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“…Nevertheless, the Mars Science Laboratory (MSL) a.k.a. the Curiosity rover observed seasonal and diurnal moisture exchange between the soil and the atmosphere at Gale crater28. Gale is at latitude 4.5° S, almost at the same latitude as Meridiani Planum (2° S).…”

Section: Discussionmentioning

confidence: 97%

Amazonian chemical weathering rate derived from stony meteorite finds at Meridiani Planum on Mars

et al. 2016

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Spacecraft exploring Mars such as the Mars Exploration Rovers Spirit and Opportunity, as well as the Mars Science Laboratory or Curiosity rover, have accumulated evidence for wet and habitable conditions on early Mars more than 3 billion years ago. Current conditions, by contrast, are cold, extremely arid and seemingly inhospitable. To evaluate exactly how dry today's environment is, it is important to understand the ongoing current weathering processes. Here we present chemical weathering rates determined for Mars. We use the oxidation of iron in stony meteorites investigated by the Mars Exploration Rover Opportunity at Meridiani Planum. Their maximum exposure age is constrained by the formation of Victoria crater and their minimum age by erosion of the meteorites. The chemical weathering rates thus derived are ∼1 to 4 orders of magnitude slower than that of similar meteorites found in Antarctica where the slowest rates are observed on Earth.

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“…We have also estimated the daily UV irradiation using dust opacity values derived from the Mastcam instrument. For more specific information on scientific results obtained from the different REMS sensors, the reader is referred to Harri et al (2014a), Haberle et al (2014), Kahanpää et al (2016) and Guzewich et al (2016) for the PS; Hamilton et al (2014), Martínez et al (2014) and Martínez et al (2015) for the GTS; Harri et al (2014b), Martín-Torres et al (2015), Savijärvi et al (2015a), Martínez et al (2015) and Savijärvi et al (2015b) for the RHS and Smith et al (2016) for the UVS. REMS has already provided the most comprehensive coverage of near-surface environmental conditions recorded by a spacecraft landed on Mars.…”

Section: Discussionmentioning

confidence: 99%

“…However, the nighttime and early morning ground temperature can be as much as ~15 K colder than that at 1.6 m above the surface (Fig. 4), allowing the ground to reach the frost point temperature on a few sols (Martínez et al, 2015;Savijärvi et al, 2015a). Figure 6.…”

Section: Near-surface Humiditymentioning

confidence: 99%

Análisis de las condiciones ambientales en el cráter Gale a partir de mediciones REMS/MSL

et al. 2016

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The environmental conditions at Gale Crater during the first 1160 sols of the Mars Science Laboratory (MSL) mission are assessed using measurements taken by the Rover Environmental Monitoring Station (REMS) on-board the MSL Curiosity rover. REMS is a suite of sensors developed to assess the environmental conditions along the rover traverse. In particular, REMS has been measuring atmospheric pressure, atmospheric and ground temperature, relative humidity, UV radiation flux and wind speed. Here we analyze processed data with the highest confidence possible of atmospheric pressure, atmospheric and ground temperature and relative humidity. In addition, we estimate the daily UV irradiation at the surface of Gale Crater using dust opacity values derived from the Mastcam instrument. REMS is still in operation, but it has already provided the most comprehensive coverage of surface environmental conditions recorded by a spacecraft landed on Mars. Key words: Mars; Atmosphere; Gale Crater; Climate; MSL; REMS. Análisis de las condiciones ambientales en el cráter Gale a partir de mediciones REMS/MSLResumen En este artículo analizamos las condiciones ambientales en el cráter Gale durante los primeros 1160 soles de la misión Mars Science Laboratory (MSL). Para ello utilizamos mediciones del instrumento Rover Environmental Monitoring Station (REMS) a bordo del MSL Curiosity rover. REMS es un conjunto de sensores desarrollado para evaluar las condiciones ambientales a lo largo del trayecto del Curiosity. En particular, REMS ha estado midiendo la presión atmosférica, temperatura atmosférica y del suelo, humedad relativa, flujo de radiación UV y velocidad del viento. En este artículo analizamos datos procesados de la máxima confianza posible de presión atmosférica, temperatura del aire y del suelo y humedad relativa. Además, calculamos la irradiación UV diaria en la superficie del cráter Gale a partir de valores de opacidad del polvo obtenidos por el instrumento Mastcam. El instrumento REMS continúa activo y ya ha proporcionado el conjunto de medidas ambientales en superficie más completo registrado desde la superficie de Marte por cualquier misión espacial Palabras clave: Marte; Atmósfera de Marte; Cráter Gale; Clima; MS; REMS. G. Martínez et al.

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Mars Science Laboratory diurnal moisture observations and column simulations

Cited by 36 publications

References 36 publications

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

The Modern Near-Surface Martian Climate: A Review of In-situ Meteorological Data from Viking to Curiosity

Amazonian chemical weathering rate derived from stony meteorite finds at Meridiani Planum on Mars

Análisis de las condiciones ambientales en el cráter Gale a partir de mediciones REMS/MSL

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