Modeling interannual variability in the Martian seasonal CO2 cycle
One aspect of the seasonal pressure variations measured at the Viking Lander sites is their nearly perfect interannual repeatability. This presents a problem because it implies that the behavior of the seasonal polar caps should be highly repeatable from year to year as well. There are a number of o...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930010631 2023-05-15T18:02:15+02:00 Modeling interannual variability in the Martian seasonal CO2 cycle Paige, D. A. Wood, S. E. Unclassified, Unlimited, Publicly available JAN 1, 1992 application/pdf http://hdl.handle.net/2060/19930010631 unknown Document ID: 19930010631 Accession ID: 93N19820 http://hdl.handle.net/2060/19930010631 No Copyright CASI LUNAR AND PLANETARY EXPLORATION Workshop on the Polar Regions of Mars: Geology, Glaciology, and Climate History, Part 1; p 26-30 1992 ftnasantrs 2015-03-15T04:36:01Z One aspect of the seasonal pressure variations measured at the Viking Lander sites is their nearly perfect interannual repeatability. This presents a problem because it implies that the behavior of the seasonal polar caps should be highly repeatable from year to year as well. There are a number of observations and theories suggesting that the presence of dust and water ice clouds in the Martian atmosphere should have significant direct and indirect effects on the rates of CO2 condensation and sublimation in the north and south polar regions. These effects include (1) reduced rates of CO2 frost condensation during polar night seasons due to the radiative effects of dust and water ice clouds and associated CO2 clouds or elevated atmospheric temperatures and (2) reduced or elevated rates of frost sublimation due to the radiative effects of atmospheric dust or to changes in frost emissivities and albedos due to contamination by water ice and dust. The Viking Landing pressure observations are examined to determine the range and character of the interannual variations present. Then a diurnal and seasonal thermal model is used to examine the effects of interannual variations in the polar heat balance on seasonal pressure variations. Other/Unknown Material polar night NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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LUNAR AND PLANETARY EXPLORATION |
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LUNAR AND PLANETARY EXPLORATION Paige, D. A. Wood, S. E. Modeling interannual variability in the Martian seasonal CO2 cycle |
topic_facet |
LUNAR AND PLANETARY EXPLORATION |
description |
One aspect of the seasonal pressure variations measured at the Viking Lander sites is their nearly perfect interannual repeatability. This presents a problem because it implies that the behavior of the seasonal polar caps should be highly repeatable from year to year as well. There are a number of observations and theories suggesting that the presence of dust and water ice clouds in the Martian atmosphere should have significant direct and indirect effects on the rates of CO2 condensation and sublimation in the north and south polar regions. These effects include (1) reduced rates of CO2 frost condensation during polar night seasons due to the radiative effects of dust and water ice clouds and associated CO2 clouds or elevated atmospheric temperatures and (2) reduced or elevated rates of frost sublimation due to the radiative effects of atmospheric dust or to changes in frost emissivities and albedos due to contamination by water ice and dust. The Viking Landing pressure observations are examined to determine the range and character of the interannual variations present. Then a diurnal and seasonal thermal model is used to examine the effects of interannual variations in the polar heat balance on seasonal pressure variations. |
format |
Other/Unknown Material |
author |
Paige, D. A. Wood, S. E. |
author_facet |
Paige, D. A. Wood, S. E. |
author_sort |
Paige, D. A. |
title |
Modeling interannual variability in the Martian seasonal CO2 cycle |
title_short |
Modeling interannual variability in the Martian seasonal CO2 cycle |
title_full |
Modeling interannual variability in the Martian seasonal CO2 cycle |
title_fullStr |
Modeling interannual variability in the Martian seasonal CO2 cycle |
title_full_unstemmed |
Modeling interannual variability in the Martian seasonal CO2 cycle |
title_sort |
modeling interannual variability in the martian seasonal co2 cycle |
publishDate |
1992 |
url |
http://hdl.handle.net/2060/19930010631 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
polar night |
genre_facet |
polar night |
op_source |
CASI |
op_relation |
Document ID: 19930010631 Accession ID: 93N19820 http://hdl.handle.net/2060/19930010631 |
op_rights |
No Copyright |
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1766172054180069376 |