Accueil
Overview of the Page venus-atm
Goal of Earth-based observations in the VEx-VCO/Akatsuki context
- Perform direct measurements not feasible by an orbiter e.g. provide direct absolute wind measurements
- Obtain simultaneous measurements over several levels in Venus' upper atmosphere
- Obtain cross-validation of different measurement techniques
- Extended spatial (both hemispheres) and temporal scales
- Constrain modeling of the mesosphere, e.g. validity domain of cyclostrophic approximation
Map
Googlemap:
$wgGoogleMapsKey = "ABQIAAAAlPAF_RpXQsb-9OA4bmfhuBROdUV6dnkNQ2wycpqjH1x_Q4S5MRRZCrmYQpMvvMzZ3_8K13uVJi0KhQ";
require_once( "$IP/extensions/GoogleMaps/GoogleMaps.php" );
Instrumentation and Techniques
Explanation of the table, contenu et but
Link on the table: Instrumentation and Techniques
Observations and Operation Planning
Link on the table: Observations and Operation Planning
In-orbit observations
Venus Express
Instruments
- ASPERA : Analyser of Space Plasma and Energetic Atoms
- MAG : Venus Express Magnetometer
- SPICAV/SOIR : Ultraviolet and Infrared Atmospheric Spectrometer
- VeRa : Venus Radio Science Experiment
- VIRTIS : Ultraviolet/Visible/Near-Infrared mapping spectrometer
- VMC : Venus Monitoring Camera
Akatsuki
The Project
A short presentation of the project? The Venus Climate Orbiter mission (PLANET-C), one of the future planetary missions of Japan, aims at understanding the atmospheric circulation of Venus. Meteorological information will be obtained by globally mapping clouds and minor constituents successively with 4 cameras at ultraviolet and infrared wavelengths, detecting lightning with a high-speed imager, and observing the vertical structure of the atmosphere with radio science technique. The equatorial elongated orbit with westward revolution fits the observations of the movement and temporal variation of the Venusian atmosphere which rotates westward. The systematic, continuous imaging observations will provide us with an unprecedented large dataset of the Venusian atmospheric dynamics. Additional targets of the mission are the exploration of the ground surface and the observation of zodiacal light. The mission will complement the ESA's Venus Express, which also explores the Venusian environment with different approaches.
extract of: http://www.stp.isas.jaxa.jp/venus/top_english.html
The project, a link to JAXA: JAXA
The Instrument and Techniques
- IR1
1.01um cloud (day-night), surface (nightside)
- IR2
1.73, 2.26, 2.32 (near-IR) 2.02 (CO2), 1.65um
- UVI 283, 365 nm
SO2 - UV absorber (dayside)
- LIR
10 um cloud top (day/nightside)
- LAC
777, 551, 553, 558, 630 nm O2/O airglow (night) lightning (night)
