Search Results - "Vandaele, A. C."
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Explanation for the Increase in High-Altitude Water on Mars Observed by NOMAD During the 2018 Global Dust Storm
Published in Geophysical research letters (16-04-2020)“…The Nadir and Occultation for MArs Discovery (NOMAD) instrument on board ExoMars Trace Gas Orbiter measured a large increase in water vapor at altitudes in the…”
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HDO and H2O vertical distributions and isotopic ratio in the Venus mesosphere by Solar Occultation at Infrared spectrometer on board Venus Express
Published in Journal of Geophysical Research - Planets (01-05-2008)“…Vertical distributions of the molecular density and mixing ratios of H2O and HDO in the Venus mesosphere have been obtained using Solar Occultation at Infrared…”
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NOMAD, an Integrated Suite of Three Spectrometers for the ExoMars Trace Gas Mission: Technical Description, Science Objectives and Expected Performance
Published in Space science reviews (01-08-2018)“…The NOMAD (“Nadir and Occultation for MArs Discovery”) spectrometer suite on board the ExoMars Trace Gas Orbiter (TGO) has been designed to investigate the…”
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Densities and temperatures in the Venus mesosphere and lower thermosphere retrieved from SOIR on board Venus Express: Carbon dioxide measurements at the Venus terminator
Published in Journal of Geophysical Research: Planets (01-07-2012)“…SOIR is a high‐resolution spectrometer flying on board the ESA Venus Express mission. It performs solar occultations of the Venus high atmosphere, and so…”
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Strong Localized Pumping of Water Vapor to High Altitudes on Mars During the Perihelion Season
Published in Geophysical research letters (28-07-2024)“…Here we present water vapor vertical profiles observed with the ExoMars Trace Gas Orbiter/Nadir and Occultation for MArs Discovery instrument during the…”
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Planet‐Wide Ozone Destruction in the Middle Atmosphere on Mars During Global Dust Storm
Published in Geophysical research letters (16-06-2022)“…The Nadir and Occultation for MArs Discovery (NOMAD)/UV‐visible (UVIS) spectrometer on the ExoMars Trace Gas Orbiter provided observations of ozone (O3) and…”
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Martian water loss to space enhanced by regional dust storms
Published in Nature astronomy (01-10-2021)“…Mars has lost most of its initial water to space as atomic hydrogen and oxygen. Spacecraft measurements have determined that present-day hydrogen escape…”
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First observations of SO2 above Venus' clouds by means of Solar Occultation in the Infrared
Published in Journal of Geophysical Research - Planets (01-05-2008)“…Solar Occultation in the Infrared (SOIR) is a part of the Spectroscopy for Investigation of Characteristics of the Atmosphere of Venus (SPICAV)/SOIR…”
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Retrieval of desert dust aerosol vertical profiles from IASI measurements in the TIR atmospheric window
Published in Atmospheric measurement techniques (07-10-2013)“…Desert dust aerosols are the most prominent tropospheric aerosols, playing an important role in the earth's climate. However, their radiative forcing is…”
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Global Variations in Water Vapor and Saturation State Throughout the Mars Year 34 Dusty Season
Published in Journal of geophysical research. Planets (01-10-2022)“…To understand the evolving martian water cycle, a global perspective of the combined vertical and horizontal distribution of water is needed in relation to…”
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Global Vertical Distribution of Water Vapor on Mars: Results From 3.5 Years of ExoMars‐TGO/NOMAD Science Operations
Published in Journal of geophysical research. Planets (01-09-2022)“…We present water vapor vertical distributions on Mars retrieved from 3.5 years of solar occultation measurements by Nadir and Occultation for Mars Discovery…”
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ExoMars TGO/NOMAD‐UVIS Vertical Profiles of Ozone: 1. Seasonal Variation and Comparison to Water
Published in Journal of geophysical research. Planets (01-11-2021)“…We present ∼1.5 Mars Years (MY) of ozone vertical profiles, covering LS = 163° in MY34 to LS = 320° in MY35, a period which includes the 2018 global dust…”
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Explaining NOMAD D/H Observations by Cloud‐Induced Fractionation of Water Vapor on Mars
Published in Journal of geophysical research. Planets (01-02-2022)“…The vertical profiles of water vapor and its semi‐heavy hydrogen isotope HDO provided by instruments on ExoMars Trace Gas Orbiter constitute a unique new data…”
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High-resolution Fourier transform measurement of the NO2 visible and near-infrared absorption cross sections: Temperature and pressure effects
Published in Journal of Geophysical Research - Atmospheres (27-09-2002)“…High‐resolution NO2 absorption cross sections have been obtained in the near‐IR (NIR) and visible regions using a Fourier transform spectrometer coupled to a…”
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Density and Temperature of the Upper Mesosphere and Lower Thermosphere of Mars Retrieved From the OI 557.7 nm Dayglow Measured by TGO/NOMAD
Published in Journal of geophysical research. Planets (01-06-2022)“…The upper mesosphere and lower thermosphere of Mars (70–150 km) is of high interest because it is a region affected by climatological/meteorological events in…”
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Martian Ozone Observed by TGO/NOMAD‐UVIS Solar Occultation: An Inter‐Comparison of Three Retrieval Methods
Published in Earth and space science (Hoboken, N.J.) (01-02-2023)“…The NOMAD‐UVIS instrument on board the ExoMars Trace Gas Orbiter has been investigating the Martian atmosphere with the occultation technique since April 2018…”
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The Mars Oxygen Visible Dayglow: A Martian Year of NOMAD/UVIS Observations
Published in Journal of geophysical research. Planets (01-06-2022)“…The Ultraviolet and Visible Spectrometer Ultraviolet (UVIS UV) and Visible Spectrometer channel of the Nadir and Occultation for MArs Discovery spectrometer…”
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Detection of green line emission in the dayside atmosphere of Mars from NOMAD-TGO observations
Published in Nature astronomy (01-11-2020)“…The oxygen emission at 557.7 nm is a ubiquitous component of the spectrum of the terrestrial polar aurora and the reason for its usual green colour 1 . It is…”
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Composition of the Venus mesosphere measured by Solar Occultation at Infrared on board Venus Express
Published in Journal of Geophysical Research - Planets (01-05-2008)“…Solar Occultation at Infrared (SOIR), which is a part of the Spectroscopy for Investigation of Characteristics of the Atmosphere of Venus (SPICAV) instrument…”
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Studying methane and other trace species in the Mars atmosphere using a SOIR instrument
Published in Planetary and space science (01-02-2011)“…Solar Occultation in the InfraRed (SOIR) is one of three spectrometers of the SPICAV/SOIR instrument suite ( Bertaux et al., 2007b) on board the Venus Express…”
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