FINAL REPORT VOYAGER SPACECRAFT PHASE B, TASK D VOLUME IV (BOOK 4 OF 5) MARS ATMOSPHERE DEFINITION

摘要

PHYSICAL DATAnA selection of Martian atmosphere mean and extreme physical date values was compiled based primarily upon the JPL Voyager Environmental Predictions Document and a number of MSFC reports.nATMOSPHERIC PARAMETERS NEAR THE SURFACEnA survey of the information available on the composition, pressure, temperature and winds in the Martian atmosphere is summarized in this final report.nENTRY ATMOSPHEREnThe existing Voyager-Mars (VM) model atmospheres appear adequate to define the lower atmosphere structure;that is, below 100 kms.nOUTER ATMOSPHERE STRUCTUREnBased on the Mariner IV ionospheric experiment data, the base of the thermosphere may be as low as 105 km.nCLOUDS AND HAZEnThe characteristics of the various cloud and haze layers presented in the final report were obtained from a survey of the existing literature.nCHEMICAL KINETICS AND COMPOSITIONnThe composition of the Martian atmosphere as a function of altitude is dependent upon the chemical kinetics.