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North polar frontal clouds and dust storms on Mars during spring and summer

Journal Article


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Abstract


  • The complete archive of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) Mars Daily Global Maps (MDGM) are used to study north polar clouds and dust storms that exhibit frontal structures during the spring and summer (Ls 0–180°). Results show that frontal events generally follow the edge of the polar cap during spring and mid/late summer with a gap in the distribution in early summer. The exact duration and timing of the gap vary from year to year. Ten to twenty percent of spring and summer time frontal events exhibit complex morphologies. Distinct temperature signatures are associated with features observed in images in many but not all cases. The general travel paths of the frontal events are eastward around the polar cap. Westward paths exist only at the edge of the polar cap in late spring/early summer. Occasionally, the paths curve toward or away from the polar cap in certain longitude sectors.

Publication Date


  • 2009

Published In


Citation


  • Wang, H. & Fisher, J. A. (2009). North polar frontal clouds and dust storms on Mars during spring and summer. Icarus, 204 (1), 103-113.

Scopus Eid


  • 2-s2.0-70349775508

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8039&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4696

Number Of Pages


  • 10

Start Page


  • 103

End Page


  • 113

Volume


  • 204

Issue


  • 1

Abstract


  • The complete archive of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) Mars Daily Global Maps (MDGM) are used to study north polar clouds and dust storms that exhibit frontal structures during the spring and summer (Ls 0–180°). Results show that frontal events generally follow the edge of the polar cap during spring and mid/late summer with a gap in the distribution in early summer. The exact duration and timing of the gap vary from year to year. Ten to twenty percent of spring and summer time frontal events exhibit complex morphologies. Distinct temperature signatures are associated with features observed in images in many but not all cases. The general travel paths of the frontal events are eastward around the polar cap. Westward paths exist only at the edge of the polar cap in late spring/early summer. Occasionally, the paths curve toward or away from the polar cap in certain longitude sectors.

Publication Date


  • 2009

Published In


Citation


  • Wang, H. & Fisher, J. A. (2009). North polar frontal clouds and dust storms on Mars during spring and summer. Icarus, 204 (1), 103-113.

Scopus Eid


  • 2-s2.0-70349775508

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8039&context=scipapers

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4696

Number Of Pages


  • 10

Start Page


  • 103

End Page


  • 113

Volume


  • 204

Issue


  • 1