DOI: 10.1002/jgrd.50191
论文题名: Observations of Quasi-Two-Day wave by TIMED/SABER and TIMED/TIDI
作者: Gu S.-Y. ; Li T. ; Dou X. ; Wu Q. ; Mlynczak M.G. ; Russell III J.M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 1624
结束页码: 1639
语种: 英语
英文关键词: mesospheric temperature
; mesospheric wind
; Quasi-Two-Day wave
Scopus关键词: Ionosphere
; Interannual variation
; Mesospheric temperature
; Mesospheric winds
; Planetary wave activity
; Quasi-two-day waves
; Seasonal and interannual variations
; Sounding of the atmosphere using broadband emission radiometry
; Thermosphere-ionosphere
; Amplification
; air temperature
; amplification
; amplitude
; annual variation
; atmospheric modeling
; baroclinic instability
; barotropic instability
; data set
; mesosphere
; oscillation
; planetary wave
; Rossby wave
; satellite imagery
; seasonal variation
; stratosphere
; thermosphere
; wave action
; zonal wind
英文摘要: Seasonal and interannual variations of the Quasi-Two-Day wave s = -3 (W3) and s = -4 (W4) modes were studied with global temperature and wind data sets during 2002-2012, observed respectively by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and TIMED Doppler Imager (TIDI) instruments onboard the Thermosphere Ionosphere and Mesosphere Electric Dynamics (TIMED) satellite. The amplitudes of W3 and W4 are significantly enhanced during austral and boreal summer respectively. Strong W3 amplitudes are observed during January 2006 in all three components of temperature, meridional wind, and zonal wind. This is most likely related to the intensive winter planetary wave activity that led to a strong sudden stratosphere warming (SSW) event. The maximum amplitudes of W4 during the 10 years are ~8-9 K, ~40 m/s, and ~20 m/s for temperature, meridional, and zonal components respectively, nearly half as large as those of W3, with ~15 K, ~65 m/s, and ~35 m/s. In January 2008 and 2009, unusually weak W3 but strong W4 oscillations were observed, corresponding to the much weaker summer easterly jets (westward wind) than those in other years. This suggests that relatively weak summer easterly may not be able to provide sufficiently strong barotropic/baroclinic instability to amplify W3 but is favorable for the amplification of W4. The weaker magnitude values, lower peak heights, and longer life intervals of W4 than those of W3 suggest that the W4 may suffer a greater damping rate than the W3. The observations of W4 show good agreement with Rossby-gravity (4, 0) mode, which is more easily trapped in both latitude and altitude because of its lower group velocity than that of Rossby-gravity (3, 0) mode. Key Points Considerable seasonal and inter-annual variations of the QTDW were found.The W3 amplitudes are significantly enhanced during January.Weak QTDW3 during 2008 and 2009 are coincident with the solar minimum.Considerable seasonal and inter-annual variations of the QTDW were found.The W3 amplitudes are significantly enhanced during January.Weak QTDW3 during 2008 and 2009 are coincident with the solar minimum. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63894
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Science, University of Science and Technology of China, No. 96, Jinzhai Rd., Hefei, Anhui, 230026, China; High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO, United States; NASA Langley Research Center, Hampton, VA, United States; Center for Atmospheric Sciences, Hampton University, Hampton, VA, United States
Recommended Citation:
Gu S.-Y.,Li T.,Dou X.,et al. Observations of Quasi-Two-Day wave by TIMED/SABER and TIMED/TIDI[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)