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The Martian atmosphere experiences large diurnal variations due to the ~24.6 h planetary rotation and its low heat capacity. Understanding such variations on a planetary scale is limited due to the lack of observations, which are greatly…

Dust is the main driver of Mars' atmospheric variability. The determination of Martian dust aerosol properties is of high relevance for radiative modelling and calculating its weather forcing. In particular, the light scattering behaviour…

地球与行星天体物理 · 物理学 2019-05-06 H. Chen-Chen , S. Perez-Hoyos , A. Sanchez-Lavega

Knowledge of Mars's ionosphere has been significantly advanced in recent years by observations from Mars Express (MEX) and lately MAVEN. A topic of particular interest are the interactions between the planet's ionospheric plasma and its…

We utilize data from the MAVEN Radio Occultation Science Experiment (Withers et al., 2020) - with unprecedented coverage in solar zenith angle - to isolate the effects that local time and season induce on the photochemical ionosphere of…

空间物理 · 物理学 2024-05-13 Jennifer Segale , Marianna Felici , Paul Withers , Shannon Curry

It is extremely important to understand and model the Martian radiation environment in preparation for future human missions to Mars, especially during extreme and elevated conditions such as an intense solar energetic particle (SEP) event.…

In this paper we show that Sun-viewing images obtained by the Mars Science Laboratory (MSL) Navigation Cameras (Navcam) can be used for retrieving the dust optical depth and constrain the aerosol physical properties at Gale Crater by…

地球与行星天体物理 · 物理学 2020-09-02 H. Chen-Chen , S. Perez-Hoyos , A. Sanchez-Lavega

The geographic structure of radiation dose rates at aircraft altitudes in Earth's atmosphere during the irradiation of Earth by proton spectra from incoming solar particle events is examined using the recently developed MAIRE+ software.…

应用物理 · 物理学 2022-12-19 Christopher S. W. Davis , Keith Ryden , Fan Lei , Ben Clewer , Alex Hands , Clive Dyer

The surface of Mars is bombarded by energetic charged particles of solar and cosmic origin with little shielding compared to Earth. As space agencies are planning for crewed missions to the red planet, a major concern is the impact of…

地球与行星天体物理 · 物理学 2024-08-12 Dionysios Gakis , Dimitra Atri

This past decade has seen tremendous advancements in the study of extrasolar planets. Observations are now made with increasing sophistication from both ground and space-based instruments, and exoplanets are characterized with increasing…

高能天体物理现象 · 物理学 2013-10-23 Dimitra Atri , B. Hariharan , Jean-Mathias Griessmeier

We present a concept for using a polarization sensitive multispectral lidar to map the seasonal distribution and exchange of volatiles among the reservoirs of the Martian surface and atmosphere. The LIDAR instrument will be a…

We have reconstructed longitude-latitude maps of column dust optical depth (CDOD) for Martian year (MY) 34 (May 5, 2017 --- March 23, 2019) using observations by the Mars Climate Sounder (MCS) aboard NASA's Mars Reconnaissance Orbiter…

地球与行星天体物理 · 物理学 2020-09-02 Luca Montabone , Aymeric Spiga , David M. Kass , Armin Kleinböhl , François Forget , Ehouarn Millour

Radiative effects of water ice clouds have noteworthy consequences on the Martian atmosphere, its thermal structure and circulation. Accordingly, the inclusion of such effects in the LMD Mars Global Climate Model (GCM) greatly modifies the…

地球与行星天体物理 · 物理学 2014-07-29 Thomas Navarro , Jean-Baptiste Madeleine , François Forget , Aymeric Spiga , Ehouarn Millour , Franck Montmessin

Airborne dust plays an active role in determining the thermal structure and chemical composition of the present-day atmosphere of Mars and possibly the planet's climate evolution over time through radiative--convective and cloud…

地球与行星天体物理 · 物理学 2023-09-06 Ananyo Bhattacharya , Cheng Li , Nilton O. Renno , Sushil K. Atreya , David Sweeney

We present an analysis of the short-term modulation (one rotation of Bartels-27 days) of the galactic cosmic rays (GCR) by the solar wind, based on the cosmic ray rates observed by the Pierre Auger Observatory (PAO) on their surface…

高能天体物理现象 · 物理学 2020-03-17 M. N. de Oliveira , C. R. A. Augusto , C. E. Navia , A. A. Nepomuceno

When traveling in the heliosphere, Galactic cosmic rays (GCRs) are subjected to the solar modulation effect, a quasiperiodical change of their intensity caused by the 11-year cycle of solar activity. Here we investigate the association of…

太阳与恒星天体物理 · 物理学 2022-11-22 Nicola Tomassetti , Bruna Bertucci , Emanuele Fiandrini

We present a study of atmospheric disturbances at Jezero Crater, Mars, using ground-based measurements of surface pressure by the Perseverance rover in combination with orbital images from the Mars Express and Mars Reconnaissance Orbiter…

The pervasive Mars dust is continually transported between the surface and the atmosphere. When on the surface, dust increases the albedo of darker underlying rocks and regolith, which modifies climate energy balance and must be quantified.…

地球与行星天体物理 · 物理学 2015-03-11 Mathieu Vincendon , Joachim Audouard , Francesca Altieri , Anouck Ody

We investigate the global seasonal variations of near-surface relative humidity and relevant attributes, like temperature and water vapor volume mixing ratio on Mars using calculations from modelled and measurement data. We focus on 2 am…

地球与行星天体物理 · 物理学 2019-07-24 B. Pál , Á. Kereszturi , F. Forget , M. D. Smith

Mars Exospheric Neutral Composition Analyzer (MENCA) of Mars Orbiter Mission (MOM) measures the \emph{in-situ} neutral upper atmospheric constituents of Mars. Martian lower atmosphere predominated by the presence of $CO_2$ which…

Since the first \emph{in-situ} measurements of the altitude profile of upper atmospheric density and composition carried out by the Viking lander missions during 1976, similar data were continuously gathered by MAVEN and MOM spacecraft…

地球与行星天体物理 · 物理学 2021-03-03 Kamsali Nagaraja , Praveen Kumar Basuvaraj , S. C. Chakravarty , K. Praveen Kumar