Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1

Details Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1 Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eguga..12.6541k&link_type=abstract

EGU General Assembly 2010, held 2-7 May, 2010 in Vienna, Austria, p.6541

Computer Science

Performance

Scientific paper

The Submillimeter wave (SMM) instrument is proposed for the Japanese Mars orbiter (MELOS-1) which launch is planned in 2018. Characteristics of the SMM instrument are the observations of wind, temperature, CO, water vapor and its isotopes, and minor radical species such as O_3,H2O_2andHO2. Many potential contributions to the Martian science are expected from these measurements: for example, the understanding of the Martian atmospheric circulation regime, the water cycle and variable hygropause, isotopic fractionation including HDO/H_2O,photochemistryinthemiddleatmosphere,andthermophysicalpropertiesofthesurfacelayer. Theobservingstrategyistocombinebothlimbandnadirobservationsfromtheellipticorbit.Inthelimbobservingmode,severaltangentialheightsarepointedbyusingthespacecraftmaneuver,whichimprovestheverticalresolutionofwindandtemperatureobservations.Thenadirobservingmodehasanadvantageofconductinghorizontalmappingwithtemporalvariationofminormolecules.Sincethedustandicecloudarealmosttransparentatsubmillimeterwavelengths,theSMMinstrumentcanprovideobservationaldatawithoutbeingaffectedbydustdistributions. Thedraftdesignoftheinstrumentishavingdualfrequencyreceiversof500and600or800GHzinordertoobserveatleasttwowatervaporlines,includingthegroundstate110˘101transitionat556.9GHz,withdifferentlinestrengths.CombinationoftheobservationsofweakandstrongopacitylinesenablesustomeasuretheH2O abundance in a wide altitude range: from the surface to higher than 100 km. This study will optimize the instrumental design by examining its scientific performance with the observation simulations. We also discuss the scientific significances of the planned observations in collaboration with the studies using general circulation models (GCMs) for the Martian atmosphere.

Affiliated with

Also associated with

No associations

Rating

Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Submillimeter wave instrument on the Japanese Mars orbiter MELOS-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-917566