Matches in SemOpenAlex for { <https://semopenalex.org/work/W1567131359> ?p ?o ?g. }
Showing items 1 to 63 of
63
with 100 items per page.
- W1567131359 startingPage "4" @default.
- W1567131359 abstract "The Mars Global Reference Atmospheric Model (Mars-GRAM) is an engineering-level atmospheric model widely used for diverse mission applications. Mars-GRAM s perturbation modeling capability is commonly used, in a Monte-Carlo mode, to perform high fidelity engineering end-to-end simulations for entry, descent, and landing (EDL). During the Mars Science Laboratory (MSL) site selection process, it was discovered that Mars-GRAM, when used for sensitivity studies for MapYear=0 and large optical depth values such as tau=3, is less than realistic. From the surface to 80 km altitude, Mars-GRAM is based on the NASA Ames Mars General Circulation Model (MGCM). MGCM results that were used for Mars-GRAM with MapYear set to 0 were from a MGCM run with a fixed value of tau=3 for the entire year at all locations. This has resulted in an imprecise atmospheric density at all altitudes. As a preliminary fix to this pressure-density problem, density factor values were determined for tau=0.3, 1 and 3 that will adjust the input values of MGCM MapYear 0 pressure and density to achieve a better match of Mars-GRAM MapYear 0 with Thermal Emission Spectrometer (TES) observations for MapYears 1 and 2 at comparable dust loading. Currently, these density factors are fixed values for all latitudes and Ls. Results will be presented from work being done to derive better multipliers by including variation with latitude and/or Ls by comparison of MapYear 0 output directly against TES limb data. The addition of these more precise density factors to Mars-GRAM 2005 Release 1.4 will improve the results of the sensitivity studies done for large optical depths." @default.
- W1567131359 created "2016-06-24" @default.
- W1567131359 creator A5046763971 @default.
- W1567131359 creator A5050101349 @default.
- W1567131359 creator A5062642963 @default.
- W1567131359 date "2010-07-18" @default.
- W1567131359 modified "2023-09-24" @default.
- W1567131359 title "Updating Mars-GRAM to Increase the Accuracy of Sensitivity Studies at Large Optical Depths" @default.
- W1567131359 hasPublicationYear "2010" @default.
- W1567131359 type Work @default.
- W1567131359 sameAs 1567131359 @default.
- W1567131359 citedByCount "0" @default.
- W1567131359 crossrefType "journal-article" @default.
- W1567131359 hasAuthorship W1567131359A5046763971 @default.
- W1567131359 hasAuthorship W1567131359A5050101349 @default.
- W1567131359 hasAuthorship W1567131359A5062642963 @default.
- W1567131359 hasConcept C121332964 @default.
- W1567131359 hasConcept C122523270 @default.
- W1567131359 hasConcept C127313418 @default.
- W1567131359 hasConcept C127413603 @default.
- W1567131359 hasConcept C13280743 @default.
- W1567131359 hasConcept C146978453 @default.
- W1567131359 hasConcept C153294291 @default.
- W1567131359 hasConcept C21200559 @default.
- W1567131359 hasConcept C24326235 @default.
- W1567131359 hasConcept C2778600265 @default.
- W1567131359 hasConcept C39432304 @default.
- W1567131359 hasConcept C45095769 @default.
- W1567131359 hasConcept C62649853 @default.
- W1567131359 hasConcept C68702407 @default.
- W1567131359 hasConcept C78949437 @default.
- W1567131359 hasConcept C83260615 @default.
- W1567131359 hasConcept C87355193 @default.
- W1567131359 hasConcept C91586092 @default.
- W1567131359 hasConceptScore W1567131359C121332964 @default.
- W1567131359 hasConceptScore W1567131359C122523270 @default.
- W1567131359 hasConceptScore W1567131359C127313418 @default.
- W1567131359 hasConceptScore W1567131359C127413603 @default.
- W1567131359 hasConceptScore W1567131359C13280743 @default.
- W1567131359 hasConceptScore W1567131359C146978453 @default.
- W1567131359 hasConceptScore W1567131359C153294291 @default.
- W1567131359 hasConceptScore W1567131359C21200559 @default.
- W1567131359 hasConceptScore W1567131359C24326235 @default.
- W1567131359 hasConceptScore W1567131359C2778600265 @default.
- W1567131359 hasConceptScore W1567131359C39432304 @default.
- W1567131359 hasConceptScore W1567131359C45095769 @default.
- W1567131359 hasConceptScore W1567131359C62649853 @default.
- W1567131359 hasConceptScore W1567131359C68702407 @default.
- W1567131359 hasConceptScore W1567131359C78949437 @default.
- W1567131359 hasConceptScore W1567131359C83260615 @default.
- W1567131359 hasConceptScore W1567131359C87355193 @default.
- W1567131359 hasConceptScore W1567131359C91586092 @default.
- W1567131359 hasLocation W15671313591 @default.
- W1567131359 hasOpenAccess W1567131359 @default.
- W1567131359 hasPrimaryLocation W15671313591 @default.
- W1567131359 hasRelatedWork W2785176384 @default.
- W1567131359 hasRelatedWork W605846806 @default.
- W1567131359 hasVolume "38" @default.
- W1567131359 isParatext "false" @default.
- W1567131359 isRetracted "false" @default.
- W1567131359 magId "1567131359" @default.
- W1567131359 workType "article" @default.