Simulated longitudinal variations in the lower thermospheric nitric oxide induced by nonmigrating tides
会议名称：《中国科学院地质与地球物理研究所第11届（2011年度）学术年会》
会议日期：2012年
学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学]
基 金：supported by National Science Foundation of China(41004070,40974090,40725014) National Important Basic Research Project(2011CB811405) Knowledge Innovation Program of the Chinese Academy of Sciences,and China Postdoctoral Science Foundation
摘 要：[1]On the basis of the GCITEM-IGGCAS model and tides from TIMED/SABER observations,the longitudinal variations in the lower thermosphere nitric oxide(NO), which is induced by nonmigrating tides,are *** simulate the intra-annual variation of the NO density and find that equinoctial lower thermospheric NO density shows an obvious wave number 4 longitudinal structure both in equinox and in June solstice and a wave number 3 longitudinal structure in December *** simulation results are consistent with the longitudinal variation observed by Oberheide and Forbes(2008b).The simulations support that the wave number 4 structure in NO density is mainly driven by the eastward propagating nonmigrating diurnal tide with zonal wave number 3,and the wave number 3 structure is mainly driven by the eastward propagating nonmigrating diurnal tide with zonal wave number *** simulations also show that the NO density residuals and the neutral mass density residuals in the height range between 90 and 120 km agree well with each other,and the neutral mass density mainly affects the longitudinal variations of lower thermospheric NO density through modulation of the chemical production rate,e.g.,through affecting the chemical reaction between excited nitrogen and molecular oxygen.