Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2
Observations of the latitude dependence of water vapor made from the Viking 2 orbiter show peak abundances in the latitude band 70° to 80° north in the northern midsummer season (planetocentric longitude ∼ 108°). Total column abundances in the polar regions require near-surface atmospheric temperatu...
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American Association for the Advancement of Science (AAAS)
1976
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Online Access: | http://dx.doi.org/10.1126/science.194.4271.1339 https://www.science.org/doi/pdf/10.1126/science.194.4271.1339 |
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craaas:10.1126/science.194.4271.1339 2024-06-09T07:46:41+00:00 Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 Farmer, Crofton B. Davies, Donald W. LaPorte, Daniel D. 1976 http://dx.doi.org/10.1126/science.194.4271.1339 https://www.science.org/doi/pdf/10.1126/science.194.4271.1339 en eng American Association for the Advancement of Science (AAAS) Science volume 194, issue 4271, page 1339-1341 ISSN 0036-8075 1095-9203 journal-article 1976 craaas https://doi.org/10.1126/science.194.4271.1339 2024-05-16T12:55:49Z Observations of the latitude dependence of water vapor made from the Viking 2 orbiter show peak abundances in the latitude band 70° to 80° north in the northern midsummer season (planetocentric longitude ∼ 108°). Total column abundances in the polar regions require near-surface atmospheric temperatures in excess of 200°K, and are incompatible with the survival of a frozen carbon dioxide cap at martian pressures. The remnant (or residual) north polar cap, and the outlying patches of ice at lower latitudes, are thus predominantly water ice, whose thickness can be estimated to be between 1 meter and 1 kilometer. Article in Journal/Newspaper Ice cap AAAS Resource Center (American Association for the Advancement of Science) Science 194 4271 1339 1341 |
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Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Observations of the latitude dependence of water vapor made from the Viking 2 orbiter show peak abundances in the latitude band 70° to 80° north in the northern midsummer season (planetocentric longitude ∼ 108°). Total column abundances in the polar regions require near-surface atmospheric temperatures in excess of 200°K, and are incompatible with the survival of a frozen carbon dioxide cap at martian pressures. The remnant (or residual) north polar cap, and the outlying patches of ice at lower latitudes, are thus predominantly water ice, whose thickness can be estimated to be between 1 meter and 1 kilometer. |
format |
Article in Journal/Newspaper |
author |
Farmer, Crofton B. Davies, Donald W. LaPorte, Daniel D. |
spellingShingle |
Farmer, Crofton B. Davies, Donald W. LaPorte, Daniel D. Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
author_facet |
Farmer, Crofton B. Davies, Donald W. LaPorte, Daniel D. |
author_sort |
Farmer, Crofton B. |
title |
Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
title_short |
Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
title_full |
Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
title_fullStr |
Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
title_full_unstemmed |
Mars: Northern Summer Ice Cap—Water Vapor Observations from Viking 2 |
title_sort |
mars: northern summer ice cap—water vapor observations from viking 2 |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1976 |
url |
http://dx.doi.org/10.1126/science.194.4271.1339 https://www.science.org/doi/pdf/10.1126/science.194.4271.1339 |
genre |
Ice cap |
genre_facet |
Ice cap |
op_source |
Science volume 194, issue 4271, page 1339-1341 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.194.4271.1339 |
container_title |
Science |
container_volume |
194 |
container_issue |
4271 |
container_start_page |
1339 |
op_container_end_page |
1341 |
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1801376647285309440 |