Anna Fedorova
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View article: Vertical damping of gravity waves evaluated from ACS-TGO solar occultation measurements on Mars
Vertical damping of gravity waves evaluated from ACS-TGO solar occultation measurements on Mars Open
Amplitudes of gravity waves generated in the lower and denser atmospheric layers grow exponentially with height as they propagate to the upper and thinner atmosphere, where they are reduced by various processes. Their vertical decay is acc…
View article: What goes on inside the Mars north polar vortex?
What goes on inside the Mars north polar vortex? Open
Mars has an axial tilt of 25.2°, comparable to that on Earth of 23.4°. This gives rise to very similar seasons, and even leads to our definition of Martian time, aligning the solar longitudes (Ls) such that Ls 0° and 180° occur at the equi…
View article: The vertical distribution of water vapour isotopes on Mars from the Atmospheric Chemistry Suite aboard the ExoMars Trace Gas Orbiter
The vertical distribution of water vapour isotopes on Mars from the Atmospheric Chemistry Suite aboard the ExoMars Trace Gas Orbiter Open
Introduction: Isotope ratios in water vapour provide key insights about the history of water on Mars and can help us unravel the fate of the large amounts of liquid water that once existed on the surface of early Mars [1]. A five-fold enri…
View article: Martian CO vertical distribution combining 3 Martian Years of TGO/ACS MIR solar occultation data
Martian CO vertical distribution combining 3 Martian Years of TGO/ACS MIR solar occultation data Open
Carbon monoxide (CO) has extensively been monitored in the martian atmosphere due to its dual significance: it provides insights into the dymanics and into photochemical processes between this molecule with others in the Martian atmosphere…
View article: Mesospheric and thermospheric temperatures on Mars: comparing a multi-mission dataset with a Global Climate Model
Mesospheric and thermospheric temperatures on Mars: comparing a multi-mission dataset with a Global Climate Model Open
The study of the coupling between the lower and the upper atmosphere has been hindered by the lack of continuous temperature measurements covering the whole atmosphere from the surface to the exobase. Thus, a large fraction of our knowledg…
View article: On HCl in the Martian atmosphere during northern summers
On HCl in the Martian atmosphere during northern summers Open
One of the primary objectives of the ExoMars Trace Gas Orbiter (TGO) mission was to search for previously undetected trace gases that could be diagnostic of active geology or a biosphere [1]. The first such gas was hydrogen chloride (HCl) …
View article: Mars water cycle: an 11 Mars year climatology of water vapor by SPICAM on Mars Express
Mars water cycle: an 11 Mars year climatology of water vapor by SPICAM on Mars Express Open
Water vapor has long been a key target in Martian exploration, as its detection confirmed the existence of an active water cycle driven by dynamic exchanges between surface ice reservoirs and the atmosphere. Since its first spectroscopic i…
View article: The Martian upper atmosphere’ thermal structure and variability as revealed by Maven & TGO combined datasets
The Martian upper atmosphere’ thermal structure and variability as revealed by Maven & TGO combined datasets Open
The upper atmosphere of Mars, including the mesosphere (60-120 km) and thermosphere (120 up to the exobase, around 180-230 km), is no doubt the less explored region of the red planet. Two recent and on-going missions to Mars are investigat…
View article: A three Martian years climatology of the vertical properties of Martian water ice clouds TGO/ACS-MIR
A three Martian years climatology of the vertical properties of Martian water ice clouds TGO/ACS-MIR Open
IntroductionWater ice clouds play an important role in the Martian water cycle and climate as they are a major actor in the inter-hemispheric water exchange, and impact the atmospheric structure and temperature by absorbing and scattering …
View article: The climatology of the homopause altitude from the Mars Planetary Climate Model
The climatology of the homopause altitude from the Mars Planetary Climate Model Open
Introduction: The homopause defines the boundary between two distinct regions of the atmosphere: the homosphere and the heterosphere. In the homosphere, located below the homopause, strong turbulent mixing causes atmospheric gases to vary …
View article: Near-Surface Water Vapor Content Based on SPICAV IR/VEx Observations in the 1.1 and 1.18 μm Transparency Windows of Venus
Near-Surface Water Vapor Content Based on SPICAV IR/VEx Observations in the 1.1 and 1.18 μm Transparency Windows of Venus Open
The SPICAV IR spectrometer aboard the Venus Express orbiter measured spectra of the 1.1 and 1.18 μm atmospheric transparency windows at the Venus night side in 2006–2014. The long-term measurements encompassed the major part of the Venus g…
View article: Water Vapor Vertical Distribution on Mars after Six Years of TGO/NOMAD Solar Occultations. Part II: Cross-validation within TGO and comparison with models
Water Vapor Vertical Distribution on Mars after Six Years of TGO/NOMAD Solar Occultations. Part II: Cross-validation within TGO and comparison with models Open
International audience
View article: Near-Surface Water Vapor Content Based on Spicav IR/VEx Observations in the 1.1- and 1.18-μm Transparency Windows
Near-Surface Water Vapor Content Based on Spicav IR/VEx Observations in the 1.1- and 1.18-μm Transparency Windows Open
The SPICAV IR spectrometer on board the Venus Express mission measured spectra of the 1.1- and 1.18-μm atmospheric transparency windows at the Venus night side. The H2O volume mixing ratio in the deep Venus atmosphere at about 10-16 km has…
View article: Cloud Opacity Variations from Nighttime Observations in Venus Transparency Windows
Cloud Opacity Variations from Nighttime Observations in Venus Transparency Windows Open
The thick cloud layer enshrouding Venus influences its thermal balance and climate evolution. However, our knowledge of total optical depth, spatial and temporal variations in the clouds is limited. We present the first complete study of t…
View article: Supporting Information for "Nine Martian Years of polar caps observations by SPICAM-IR/Mars-Express"
Supporting Information for "Nine Martian Years of polar caps observations by SPICAM-IR/Mars-Express" Open
This dataset contains several additional figures and data for the "Nine Martian Years of polar caps observations by SPICAM-IR/Mars-Express". Data and additional figures play special role in this publication, since we use a lot of different…
View article: THE PROCEDURE OF USING AERIAL PHOTOGRAPHS TO CREATE THE GRAPHIC PART OF LAND MANAGEMENT DOCUMENTATION
THE PROCEDURE OF USING AERIAL PHOTOGRAPHS TO CREATE THE GRAPHIC PART OF LAND MANAGEMENT DOCUMENTATION Open
The article is devoted to the use of aerial surveying issue to create a graphic part of land management documentation. For each type of land management documentation, the scale of graphic materials of land management documentation is deter…
View article: Metal – insulator transition in CaV1-xWxO3 (x = 0.1–0.33) perovskites
Metal – insulator transition in CaV1-xWxO3 (x = 0.1–0.33) perovskites Open
View article: Night O2 (a1Δg) airglow spatial distribution and temporal behavior on Venus based on SPICAV IR/VEx nadir dataset
Night O2 (a1Δg) airglow spatial distribution and temporal behavior on Venus based on SPICAV IR/VEx nadir dataset Open
View article: Mars’ Water Cycle and Escape: A View from Mars Express and Beyond
Mars’ Water Cycle and Escape: A View from Mars Express and Beyond Open
View article: Composition and Chemistry of the Martian Atmosphere as Observed by Mars Express and ExoMars Trace Gas Orbiter
Composition and Chemistry of the Martian Atmosphere as Observed by Mars Express and ExoMars Trace Gas Orbiter Open
View article: Unambiguous detection of mesospheric CO2 clouds on Mars using 2.7 μm absorption band from the ACS/TGO solar occultations
Unambiguous detection of mesospheric CO2 clouds on Mars using 2.7 μm absorption band from the ACS/TGO solar occultations Open
View article: Dust and Clouds on Mars: The View from Mars Express
Dust and Clouds on Mars: The View from Mars Express Open
European Space Agency’s Mars Express (MEX) has been orbiting Mars for 20 years and its instruments have provided a plethora of observations of atmospheric dust and clouds. These observations have been analysed to produce many unique views …
View article: Relationships Between HCl, H<sub>2</sub>O, Aerosols, and Temperature in the Martian Atmosphere: 2. Quantitative Correlations
Relationships Between HCl, H<sub>2</sub>O, Aerosols, and Temperature in the Martian Atmosphere: 2. Quantitative Correlations Open
The detection of hydrogen chloride (HCl) in the atmosphere of Mars was among the primary objectives of the ExoMars Trace Gas Orbiter (TGO) mission. Its discovery using the Atmospheric Chemistry Suite mid‐infrared channel (ACS MIR) showed a…
View article: Relationships Between HCl, H<sub>2</sub>O, Aerosols, and Temperature in the Martian Atmosphere: 1. Climatological Outlook
Relationships Between HCl, H<sub>2</sub>O, Aerosols, and Temperature in the Martian Atmosphere: 1. Climatological Outlook Open
Detecting trace gases such as hydrogen chloride (HCl) in Mars' atmosphere is among the primary objectives of the ExoMars Trace Gas Orbiter (TGO) mission. Terrestrially, HCl is closely associated with active volcanic activity, so its detect…
View article: Upper limits of HO2 in the atmosphere of Mars from the ExoMars Trace Gas Orbiter
Upper limits of HO2 in the atmosphere of Mars from the ExoMars Trace Gas Orbiter Open
Odd-hydrogen (HO$_\mathrm{x}$) species have a crucial role in regulating the chemistry of the atmosphere of Mars and are important to understand some of the most fundamental aspects regarding its atmospheric composition such as the long-te…
View article: Temperature Profiles from TGO Solar Occultation Data. Retrieval Methods and Cross-validation between NOMAD &amp; ACS
Temperature Profiles from TGO Solar Occultation Data. Retrieval Methods and Cross-validation between NOMAD & ACS Open
The characterization of the thermal structure of the Martian atmosphere with unprecendented vertical resolution is one of the goals of the ESA and Roscosmos Exomars Trace Gas Orbiter (TGO) [1]. This can be achieved with two solar occultati…
View article: Constrained estimates of water loss from the martian atmosphere in a coupled TGO/MRO assimilation
Constrained estimates of water loss from the martian atmosphere in a coupled TGO/MRO assimilation Open
The evolution of water on Mars is a major scientific topic that can in part be advanced through the provision of bounded constraints on the rates of water loss. The Mars Atmosphere and Volatile EvolutioN Imaging Ultraviolet Spectrograph in…
View article: Relationships between HCl, H2O, aerosols, and temperature in the Martian atmosphere
Relationships between HCl, H2O, aerosols, and temperature in the Martian atmosphere Open
One of the main objectives of the ExoMars Trace Gas Orbiter (TGO) mission is to hunt for any gases that may be diagnostic of active geological of biogenic processes. Of key interest was methane (CH4) due to its link to biological productio…
View article: Unambiguous detection of mesospheric CO2 clouds on Mars using 2.7 μm absorption band from the ACS/TGO solar occultations
Unambiguous detection of mesospheric CO2 clouds on Mars using 2.7 μm absorption band from the ACS/TGO solar occultations Open
Mesospheric CO2 clouds are one of two types of carbon dioxide clouds known on Mars. We present observations of mesospheric CO2 clouds made by Atmospheric Chemistry Suit (ACS) onboard the ESA-Roscosmos ExoMars Trace Gas Orbiter (TGO). We an…
View article: Airglow and Aurora in the Martian Atmosphere: Contributions by the Mars Express and ExoMars TGO Missions
Airglow and Aurora in the Martian Atmosphere: Contributions by the Mars Express and ExoMars TGO Missions Open