Voyager 1 imaging and IRIS observations of Jovian methane absorption and thermal emission - Implications for cloud structure

Details Voyager 1 imaging and IRIS observations of Jovian methane absorption and thermal emission - Implications for cloud structure Voyager 1 imaging and IRIS observations of Jovian methane absorption and thermal emission - Implications for cloud structure

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...61..311w&link_type=abstract

Icarus (ISSN 0019-1035), vol. 61, Feb. 1985, p. 311-342. NASA-sponsored research. Previously announced in STAR as N84-26544.

Computer Science

38

Atmospheric Composition, Atmospheric Models, Clouds, Image Enhancement, Jupiter (Planet), Jupiter Atmosphere, Signature Analysis, Thematic Mapping, Absorption Spectra, Ground Truth, Image Resolution, Infrared Spectra, Methane, Voyager 1 Spacecraft, Jupiter, Voyager 1, Imagery, Observations, Methane, Absorption, Thermal Properties, Emissions, Clouds, Structure, Iris, Reflectivity, Spectra, Optical Properties, Atmosphere, Features, Equatorial Regions, Anomalies, Gradients, Composition, Great Red Spot, Hot Spo

Scientific paper

Images from three filters of the Voyager 1 wide angle camera are used to measure the continuum reflectivity and spectral gradient near 6000 A and the 6190 A band methane/continuum ratio for a variety of cloud features in Jupiter's atmosphere. The dark barge features in the North Equatorial Belt have anomalously strong positive continuum spectral gradients suggesting unique composition. Methane absorption is shown at unprecedented spatial scales for the Great Red Spot and its immediate environment, for a dark barge feature in the North Equatorial Belt, and for two hot spot and plume regions in the North Equatorial Belt. Methane absorption and five micrometer emission are correlated in the vicinity of the Great Red Spot but are anticorrelated in one of the plume hot spot regions. Methane absorption and simultaneous maps of five micrometer brightness temperature are quantitatively compared to realistic cloud structure models which include multiple scattering at five micrometer as well as in the visible. Variability in H2 quadrupole lines are also investigated.

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