H. Svedhem
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View article: Reconstructing martian winds at potential future landing sites with a regional lander network
Reconstructing martian winds at potential future landing sites with a regional lander network Open
Human missions to Mars will require detailed knowledge of local meteorological conditions. Continuous measurement of winds in the vicinity of a landing site is needed to provide accurate local weather monitoring and forecasting, thus prepa…
View article: Ionospheric Analysis With Martian Mutual Radio Occultation
Ionospheric Analysis With Martian Mutual Radio Occultation Open
This study presents a comprehensive analysis of the Martian ionosphere using Mutual Radio Occultation (RO) observations between Mars Express and Trace Gas Orbiter, featuring 71 full vertical profiles out of a total of 124 measurements. Amo…
View article: First Results of Mars Express—ExoMars Trace Gas Orbiter Mutual Radio Occultation
First Results of Mars Express—ExoMars Trace Gas Orbiter Mutual Radio Occultation Open
Spacecraft‐to‐spacecraft radio occultations experiments are being conducted at Mars between Mars Express (MEX) and Trace Gas Orbiter (TGO), the first ever extensive inter‐spacecraft occultations at a planet other than Earth. Here we presen…
View article: First Results of Mars Express - ExoMars Trace Gas Orbiter Mutual Radio Occultation
First Results of Mars Express - ExoMars Trace Gas Orbiter Mutual Radio Occultation Open
Spacecraft-to-spacecraft radio occultations experiments are being conducted at Mars between the Mars Express (MEX) and Trace Gas Orbiter (TGO) spacecraft, the first ever periodic inter-spacecraft occultations at a planet other than Earth. …
View article: Solar Energetic Particle Events Detected in the Housekeeping Data of the European Space Agency's Spacecraft Flotilla in the Solar System
Solar Energetic Particle Events Detected in the Housekeeping Data of the European Space Agency's Spacecraft Flotilla in the Solar System Open
Despite the growing importance of planetary Space Weather forecasting and radiation protection for science and robotic exploration and the need for accurate Space Weather monitoring and predictions, only a limited number of spacecraft have…
View article: Coordination of Mars Express and Trace Gas Orbiter joint observations of the Martian atmosphere in 2021-2022
Coordination of Mars Express and Trace Gas Orbiter joint observations of the Martian atmosphere in 2021-2022 Open
<p>The scientific objectives of Mars Express (MEX) and ExoMars 2016 Trace Gas Orbiter (TGO) missions are very complementary, with increasing synergies among the science teams, in particular for the study of the atmosphere. In this co…
View article: The evidence for unusually high hydrogen abundances in the central part of Valles Marineris on Mars
The evidence for unusually high hydrogen abundances in the central part of Valles Marineris on Mars Open
Studies of hydrogen deposition in the shallow Martian subsurface have been conducted by two neutron and one gamma-ray detectors in the past and provided global hydrogen maps (Boynton et al., 2002; Feldman et al., 2002; Mitrofanov et al., 2…
View article: First results from the MEX &#8211; TGO Mutual Radio Occultation Experiment
First results from the MEX – TGO Mutual Radio Occultation Experiment Open
Conventional Radio Occultation measurements take place between a spacecraft in orbit around a planet (or during an occasional fly-by), and a receiving ground station on the Earth.  When the straight line between the sender and receive…
View article: Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: algorithms testing
Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: algorithms testing Open
Radio Occultation (RO) is a very powerful technique to probe a planetary atmosphere, in providing vertical density profiles of the neutral atmosphere and ionosphere. The standard method uses a radio link between a spacecraft and an Earth g…
View article: Atmospheric observations performed simultaneously in 2020-2021 by ESA&#8217;s Mars Express and Trace Gas Orbiter
Atmospheric observations performed simultaneously in 2020-2021 by ESA’s Mars Express and Trace Gas Orbiter Open
In this contribution we provide an update of the observations performed simultaneously (or quasi-simultaneously) by the two European satellites around Mars: Mars Express (MEX) and ExoMars 2016 Trace Gas Orbiter (TGO).The scientific objecti…
View article: Mars Long-Lived Weather Network Mission Study
Mars Long-Lived Weather Network Mission Study Open
ESA’s current Mars exploration programme consists of the flying orbiters Mars Express and the ExoMars TGO, while the ExoMars rover is planned for launch in 2022. The Nov 2019 ESA Council of Ministers meeting, Space19+, has approved E…
View article: The ExoMars Trace Gas Orbiter &#8211; Progress and future studies
The ExoMars Trace Gas Orbiter – Progress and future studies Open
<p>The Trace Gas Orbiter, TGO, is now well into its second Martian year of operations. The first year has been a highly successful Martian year, starting with the rise, plateau and decay of the major Global Dust Storm in the summer o…
View article: The ExoMars Trace Gas Orbiter - First Martian Year in Orbit
The ExoMars Trace Gas Orbiter - First Martian Year in Orbit Open
The Trace Gas Orbiter, TGO, concluded its first Martian year in orbit in March 2020. It has been a highly successful Martian year, starting with the rise, plateau and decay of the major Global Dust Storm in the summer of 2018. This has ena…
View article: Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: feasibility study and preparation for the data analysis
Mutual radio occultation experiment between ExoMars Trace Gas Orbiter and Mars Express: feasibility study and preparation for the data analysis Open
Radio Occultation is a very powerful technique to probe a planetary atmosphere, in providing vertical density profiles of the neutral atmosphere and ionosphere. The standard method uses a radio link at S and/or X band between a spacecraft …
View article: The ExoMars Trace Gas Orbiter &#8211; First Martian Year in Orbit
The ExoMars Trace Gas Orbiter – First Martian Year in Orbit Open
<p>The Trace Gas Orbiter, TGO, has in March 2020 concluded its first Martian year in its 400km, 74 degrees inclination, science orbit. It has been a highly successful year, starting with the rise, plateau and decay of the major Globa…
View article: Venus: The Atmosphere, Climate, Surface, Interior and Near-Space Environment of an Earth-Like Planet
Venus: The Atmosphere, Climate, Surface, Interior and Near-Space Environment of an Earth-Like Planet Open
This is a review of current knowledge about Earth’s nearest planetary neighbour and near twin, Venus. Such knowledge has recently been extended by the European Venus Express and the Japanese Akatsuki spacecraft in orbit around the planet; …
View article: Habitability on Early Mars and the Search for Biosignatures with the ExoMars Rover
Habitability on Early Mars and the Search for Biosignatures with the ExoMars Rover Open
The second ExoMars mission will be launched in 2020 to target an ancient location interpreted to have strong potential for past habitability and for preserving physical and chemical biosignatures (as well as abiotic/prebiotic organics). Th…
View article: Properties of the 67P/Churyumov-Gerasimenko interior revealed by CONSERT radar
Properties of the 67P/Churyumov-Gerasimenko interior revealed by CONSERT radar Open
The Philae lander provides a unique opportunity to investigate the internal structure of a comet nucleus, providing information about its formation and evolution in the early solar system. We present Comet Nucleus Sounding Experiment by Ra…