Participation in the Mars Orbiting Laser Altimeter Experiment
The Mars Orbiting Laser Altimeter (MOLA) instrument [1,2] carried aboard the Mars Global Surveyor (MGS) spacecraft, has observed strong echoes from cloud tops at 1.064 microns on 61% of its orbital passes over the winter north pole (235deg L(sub S), < 315deg) and on 58% of the passes over the win...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20040051147 2023-05-15T17:39:48+02:00 Participation in the Mars Orbiting Laser Altimeter Experiment Pettengil, Gordon H. Ford, Peter Unclassified, Unlimited, Publicly available [2004] application/pdf http://hdl.handle.net/2060/20040051147 unknown Document ID: 20040051147 http://hdl.handle.net/2060/20040051147 No Copyright CASI Space Sciences (General) 2004 ftnasantrs 2019-07-21T02:19:35Z The Mars Orbiting Laser Altimeter (MOLA) instrument [1,2] carried aboard the Mars Global Surveyor (MGS) spacecraft, has observed strong echoes from cloud tops at 1.064 microns on 61% of its orbital passes over the winter north pole (235deg L(sub S), < 315deg) and on 58% of the passes over the winter south pole (45deg < L(sub S), < 135deg). The clouds are unlikely to be composed of water ice since the vapor pressure of H2O is very low at the Martian nighttime polar temperatures measured by the Thermal Emission Spectrometer (TES) [3], and by an analysis of MGS radio occultations [4]. Dust clouds can also be ruled out since no correlation is seen between clouds and global dust storms. The virtually certain composition for the winter polar clouds is CO2 ice. Other/Unknown Material North Pole South pole NASA Technical Reports Server (NTRS) North Pole South Pole |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Space Sciences (General) |
spellingShingle |
Space Sciences (General) Pettengil, Gordon H. Ford, Peter Participation in the Mars Orbiting Laser Altimeter Experiment |
topic_facet |
Space Sciences (General) |
description |
The Mars Orbiting Laser Altimeter (MOLA) instrument [1,2] carried aboard the Mars Global Surveyor (MGS) spacecraft, has observed strong echoes from cloud tops at 1.064 microns on 61% of its orbital passes over the winter north pole (235deg L(sub S), < 315deg) and on 58% of the passes over the winter south pole (45deg < L(sub S), < 135deg). The clouds are unlikely to be composed of water ice since the vapor pressure of H2O is very low at the Martian nighttime polar temperatures measured by the Thermal Emission Spectrometer (TES) [3], and by an analysis of MGS radio occultations [4]. Dust clouds can also be ruled out since no correlation is seen between clouds and global dust storms. The virtually certain composition for the winter polar clouds is CO2 ice. |
author |
Pettengil, Gordon H. Ford, Peter |
author_facet |
Pettengil, Gordon H. Ford, Peter |
author_sort |
Pettengil, Gordon H. |
title |
Participation in the Mars Orbiting Laser Altimeter Experiment |
title_short |
Participation in the Mars Orbiting Laser Altimeter Experiment |
title_full |
Participation in the Mars Orbiting Laser Altimeter Experiment |
title_fullStr |
Participation in the Mars Orbiting Laser Altimeter Experiment |
title_full_unstemmed |
Participation in the Mars Orbiting Laser Altimeter Experiment |
title_sort |
participation in the mars orbiting laser altimeter experiment |
publishDate |
2004 |
url |
http://hdl.handle.net/2060/20040051147 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
North Pole South Pole |
geographic_facet |
North Pole South Pole |
genre |
North Pole South pole |
genre_facet |
North Pole South pole |
op_source |
CASI |
op_relation |
Document ID: 20040051147 http://hdl.handle.net/2060/20040051147 |
op_rights |
No Copyright |
_version_ |
1766140578527969280 |