DOI: 10.1002/2015GL065307
论文题名: High-altitude gravity waves in the Martian thermosphere observed by MAVEN/NGIMS and modeled by a gravity wave scheme
作者: Yiğit E. ; England S.L. ; Liu G. ; Medvedev A.S. ; Mahaffy P.R. ; Kuroda T. ; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8469
EISSN: 1944-8200
出版年: 2015
卷: 42, 期: 21 起始页码: 8993
结束页码: 9000
语种: 英语
英文关键词: gravity wave parameterization
; gravity waves
; Mars
; MAVEN
; thermosphere
; waves
Scopus关键词: Carbon dioxide
; Gravity waves
; Ionosphere
; NASA
; Satellites
; Waves
; Altitude variation
; Density perturbation
; Ion mass spectrometer
; Mars
; MAVEN
; Modeling and measurement
; Thermosphere
; Volatile evolution
; Gravitation
; altitude
; carbon dioxide
; database
; gravity wave
; instrumentation
; Martian atmosphere
; mass spectrometry
; parameterization
; perturbation
; thermosphere
英文摘要: First high-altitude observations of gravity wave (GW)-induced CO2density perturbations in the Martian thermosphere retrieved from NASA's Neutral Gas Ion Mass Spectrometer (NGIMS) instrument on board the Mars Atmosphere Volatile EvolutioN (MAVEN) satellite are presented and interpreted using the extended GW parameterization of Yiʇit et al. (2008) and the Mars Climate Database as an input. Observed relative density perturbations between 180 and 220 km of 20-40% demonstrate appreciable local time, latitude, and altitude variations. Modeling for the spatiotemporal conditions of the MAVEN observations suggests that GWs can directly propagate from the lower atmosphere to the thermosphere, produce appreciable dynamical effects, and likely contribute to the observed fluctuations. Modeled effects are somewhat smaller than the observed, but their highly variable nature is in qualitative agreement with observations. Possible reasons for discrepancies between modeling and measurements are discussed. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955177692&doi=10.1002%2f2015GL065307&partnerID=40&md5=9d0ccb4a1490e85527e18594630f60e0
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8085
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Physics and Astronomy, George Mason University, Fairfax, VA, United States
Recommended Citation:
Yiğit E.,England S.L.,Liu G.,et al. High-altitude gravity waves in the Martian thermosphere observed by MAVEN/NGIMS and modeled by a gravity wave scheme[J]. Geophysical Research Letters,2015-01-01,42(21).