Annual Heat Balance of Martian Polar Caps: Viking Observations
The Infrared Thermal Mappers aboard the two Viking orbiters obtained solar reflectance and infrared emission measurements of the Martian north and south polar regions during an entire Mars year. The observations were used to determine annual radiation budgets, infer annual carbon dioxide frost budge...
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American Association for the Advancement of Science (AAAS)
1985
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Online Access: | http://dx.doi.org/10.1126/science.228.4704.1160 https://www.science.org/doi/pdf/10.1126/science.228.4704.1160 |
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craaas:10.1126/science.228.4704.1160 2024-06-23T07:56:49+00:00 Annual Heat Balance of Martian Polar Caps: Viking Observations Paige, David A. Ingersoll, Andrew P. 1985 http://dx.doi.org/10.1126/science.228.4704.1160 https://www.science.org/doi/pdf/10.1126/science.228.4704.1160 en eng American Association for the Advancement of Science (AAAS) Science volume 228, issue 4704, page 1160-1168 ISSN 0036-8075 1095-9203 journal-article 1985 craaas https://doi.org/10.1126/science.228.4704.1160 2024-06-06T04:01:04Z The Infrared Thermal Mappers aboard the two Viking orbiters obtained solar reflectance and infrared emission measurements of the Martian north and south polar regions during an entire Mars year. The observations were used to determine annual radiation budgets, infer annual carbon dioxide frost budgets, and constrain spring season surface and atmospheric properties with the aid of a polar radiative model. The results provide further confirmation of the presence of permanent CO 2 frost deposits near the south pole and show that the stability of these deposits can be explained by their high reflectivities. In the north, the observed absence of solid CO 2 during summer was primarily the result of enhanced CO 2 sublimation rates due to lower frost reflectivities during spring. The results suggest that the present asymmetric behavior of CO 2 frost at the Martian poles is caused by preferential contamination of the north seasonal polar cap by atmospheric dust. Article in Journal/Newspaper South pole AAAS Resource Center (American Association for the Advancement of Science) South Pole Science 228 4704 1160 1168 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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English |
description |
The Infrared Thermal Mappers aboard the two Viking orbiters obtained solar reflectance and infrared emission measurements of the Martian north and south polar regions during an entire Mars year. The observations were used to determine annual radiation budgets, infer annual carbon dioxide frost budgets, and constrain spring season surface and atmospheric properties with the aid of a polar radiative model. The results provide further confirmation of the presence of permanent CO 2 frost deposits near the south pole and show that the stability of these deposits can be explained by their high reflectivities. In the north, the observed absence of solid CO 2 during summer was primarily the result of enhanced CO 2 sublimation rates due to lower frost reflectivities during spring. The results suggest that the present asymmetric behavior of CO 2 frost at the Martian poles is caused by preferential contamination of the north seasonal polar cap by atmospheric dust. |
format |
Article in Journal/Newspaper |
author |
Paige, David A. Ingersoll, Andrew P. |
spellingShingle |
Paige, David A. Ingersoll, Andrew P. Annual Heat Balance of Martian Polar Caps: Viking Observations |
author_facet |
Paige, David A. Ingersoll, Andrew P. |
author_sort |
Paige, David A. |
title |
Annual Heat Balance of Martian Polar Caps: Viking Observations |
title_short |
Annual Heat Balance of Martian Polar Caps: Viking Observations |
title_full |
Annual Heat Balance of Martian Polar Caps: Viking Observations |
title_fullStr |
Annual Heat Balance of Martian Polar Caps: Viking Observations |
title_full_unstemmed |
Annual Heat Balance of Martian Polar Caps: Viking Observations |
title_sort |
annual heat balance of martian polar caps: viking observations |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1985 |
url |
http://dx.doi.org/10.1126/science.228.4704.1160 https://www.science.org/doi/pdf/10.1126/science.228.4704.1160 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Science volume 228, issue 4704, page 1160-1168 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.228.4704.1160 |
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Science |
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228 |
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4704 |
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1160 |
op_container_end_page |
1168 |
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1802650177327071232 |