J. É. Blamont
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View article: Stability of the Martian atmosphere: Possible role of heterogeneous chemistry
Stability of the Martian atmosphere: Possible role of heterogeneous chemistry Open
A new hypothesis is proposed for recycling Martian CO to CO 2 . The same hypothesis can satisfactorily explain the recently observed depletion in CO in the middle atmosphere of Mars. The mechanism involves oxidation of carbon monoxide thro…
View article: Implications of preliminary Vega balloon results for the Venus atmosphere dynamics
Implications of preliminary Vega balloon results for the Venus atmosphere dynamics Open
The typical 1-2 m/sec vertical winds encountered by the Vega balloons probably result from thermal
\nconvection. The consistent 6.5-kelvin differential between the Vega 1 and Vega 2 temperatures is attributable
\nto disturbances of synopti…
View article: Small-scale Turbulence in the Venus Middle Cloud Layer
Small-scale Turbulence in the Venus Middle Cloud Layer Open
Measurements of the Doppler-velocity fluctuations indicated by the radio signals from the Vega balloons
\ntestify to strong turbulence in the nightside as well as the dayside Venus cloud layer. Wind speeds vary by up
\nto 2 m/sec on time s…
View article: Meteorological Data Along the VEGA-1 and VEGA-2 Float Paths
Meteorological Data Along the VEGA-1 and VEGA-2 Float Paths Open
During their flight through the Venus atmosphere
\nthe Vega 1 and Vega 2 balloon craft measured
\nthe pressure and temperature of the ambient
\nmedium, the vertical wind-velocity component (relative
\nto the gondola), the cloud-layer backs…
View article: IAC volume 63 Cover and Front matter
IAC volume 63 Cover and Front matter Open
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View article: Lidar measurements of atmospheric lithium
Lidar measurements of atmospheric lithium Open
The Haute‐Provence Observatory (44° N, 6°E)lidar facility has been extended to study the atmospheric lithium and its isotopic ratio Li 7 /Li 6 in the upper atmosphere. The experimental features have been improved in order to lower the dete…
View article: A method of exploration of the atmosphere of Titan
A method of exploration of the atmosphere of Titan Open
A hot-air balloon, with the air heated by natural sources, is described. Buoyancy is accomplished by either solar heating or by utilizing the IR thermal flux of the planet to heat the gas in the balloon. Altitude control is provided by a v…
View article: 1.1.10. Evidence for Scattering Particles in Meteor Streams
1.1.10. Evidence for Scattering Particles in Meteor Streams Open
From observations made with a photometer placed on board D2A-Tournesol from April 1971 to June 1973 at ε = ± 90 ° for all ecliptic latitudes, we had deduced that the intensity of the zodiacal light is not constant, but shows fluctuations, …
View article: Global temperature distributions from OGO‐6 6300 Å airglow measurements
Global temperature distributions from OGO‐6 6300 Å airglow measurements Open
The OGO‐6 6300 Å airglow temperature measurements have been used to develop models of the global temperature distributions under solstice and equinox conditions for the altitude region from 240 to 300 km and for times ranging from dawn in …
View article: The atmosphere of the rings of Saturn
The atmosphere of the rings of Saturn Open
RNA has long been regarded as the important intermediary in the central dogma of gene expression. Recently, the importance of RNAs in the regulation of gene expression became evident with the identification and characterization of non-prot…
View article: Equatorial airglow and the ionospheric geomagnetic anomaly
Equatorial airglow and the ionospheric geomagnetic anomaly Open
OGO D observations of OI (6300A) emissions reveal a global pattern in the equatorial airglow undetected from the ground-based observations. The post sunset emission rate of OI is generally asymmetrical with respect to the geomagnetic equat…
View article: Satellite observations of strong Balmer alpha atmospheric emissions around the magnetic equator
Satellite observations of strong Balmer alpha atmospheric emissions around the magnetic equator Open
Balmer • emissions of intensity larger than three times the nominal value have been recorded during five different nights at geomagnetic latitudes inferior to q-22 ø .They .arecorrelated with sudden impulses in magnetograms.DESCRIPTION or …
View article: Solar Lyman alpha changes and related hydrogen density distribution at the Earth's exobase (1969-1970)
Solar Lyman alpha changes and related hydrogen density distribution at the Earth's exobase (1969-1970) Open
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View article: OGO-4 observations of the 6300 A night airglow from 40 deg N to 40 deg S: A set of 19 color maps
OGO-4 observations of the 6300 A night airglow from 40 deg N to 40 deg S: A set of 19 color maps Open
Data for the 6300 A line of atomic oxygen from the main body airglow photometer on the OGO-D satellite are summarized in a set of 19 maps for various local times at night between 30 August 1967 and 10 January 1968.
View article: Functional characteristics of the OGO main body airglow photometer
Functional characteristics of the OGO main body airglow photometer Open
The OGO-4 main body airglow photometer used a trialkali cathode photomultiplier to sense light at selected wavelengths between 2500 and 6300A corresponding to important emissions in the aurora and night airglow at emission rates ranging fr…
View article: An Experimental Demonstration of the Isentropic Nature of the Motion of Stratospheric Air Masses
An Experimental Demonstration of the Isentropic Nature of the Motion of Stratospheric Air Masses Open
A superpressure balloon flying at a constant density level fortuitously encountered (on two consecutive days) an artificial cloud generated by a French nuclear test over the South Pacific. The measurements of temperature and radiation made…
View article: 44. Astronomical Observations from Outside the Terrestrial Atmosphere
44. Astronomical Observations from Outside the Terrestrial Atmosphere Open
In view of the limitation on length set by the cost of producing the IAU Reports, the present report can only be a selection of the most important advances during the past three years and not a complete review of the field. Attempting to p…
View article: Measurement of the Temperature in the Upper Atmosphere to 150 km in a Rocket Experiment
Measurement of the Temperature in the Upper Atmosphere to 150 km in a Rocket Experiment Open
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