Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements
Viking infrared thermal mapper observations of Mars in the 15-micron CO2 band reveal global atmospheric thermal behavior at the 0.3to 0.6-mbar level. Dust entrained by storms produces major modification of diurnal and latitudinal structure in the brightness temperature. In the dust-laden atmosphere...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19790056620 2023-05-15T18:02:14+02:00 Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements Martin, T. Z. Kieffer, H. H. Unclassified, Unlimited, Publicly available Jun 10, 1979 http://ntrs.nasa.gov/search.jsp?R=19790056620 unknown http://ntrs.nasa.gov/search.jsp?R=19790056620 Accession ID: 79A40633 Copyright Other Sources 91 Journal of Geophysical Research; 84; June 10 1979 ftnasantrs 2012-02-15T13:54:52Z Viking infrared thermal mapper observations of Mars in the 15-micron CO2 band reveal global atmospheric thermal behavior at the 0.3to 0.6-mbar level. Dust entrained by storms produces major modification of diurnal and latitudinal structure in the brightness temperature. In the dust-laden atmosphere of southern spring and summer 1977, the brightness temperature was a maximum in late afternoon at a latitude well south of the subsolar latitude. Diurnal amplitude was as great as 30 K, while diurnal mean temperatures exceeded 220 K. Over the northern winter polar cap, the brightness temperature increased dramatically following the second global dust storm of 1977; even in regions of polar night the change was up to 80 K. Inversions of similar magnitude resulted, and the change in downward radiance was sufficient to modify substantially the rate of CO2 condensation at the surface. Other/Unknown Material polar night NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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91 Martin, T. Z. Kieffer, H. H. Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
topic_facet |
91 |
description |
Viking infrared thermal mapper observations of Mars in the 15-micron CO2 band reveal global atmospheric thermal behavior at the 0.3to 0.6-mbar level. Dust entrained by storms produces major modification of diurnal and latitudinal structure in the brightness temperature. In the dust-laden atmosphere of southern spring and summer 1977, the brightness temperature was a maximum in late afternoon at a latitude well south of the subsolar latitude. Diurnal amplitude was as great as 30 K, while diurnal mean temperatures exceeded 220 K. Over the northern winter polar cap, the brightness temperature increased dramatically following the second global dust storm of 1977; even in regions of polar night the change was up to 80 K. Inversions of similar magnitude resulted, and the change in downward radiance was sufficient to modify substantially the rate of CO2 condensation at the surface. |
format |
Other/Unknown Material |
author |
Martin, T. Z. Kieffer, H. H. |
author_facet |
Martin, T. Z. Kieffer, H. H. |
author_sort |
Martin, T. Z. |
title |
Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
title_short |
Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
title_full |
Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
title_fullStr |
Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
title_full_unstemmed |
Thermal infrared properties of the Martian atmosphere. II - The 15-micron band measurements |
title_sort |
thermal infrared properties of the martian atmosphere. ii - the 15-micron band measurements |
publishDate |
1979 |
url |
http://ntrs.nasa.gov/search.jsp?R=19790056620 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
polar night |
genre_facet |
polar night |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19790056620 Accession ID: 79A40633 |
op_rights |
Copyright |
_version_ |
1766172035273195520 |