Results 31 to 40 of about 4,157,933 (216)
Earth and Planetary Physics, 2019 Observations of a quasi-90-day oscillation in the mesosphere and lower thermosphere (MLT) region from April 2011 to December 2014 are presented in this study. There is clear evidence of a quasi-90-day oscillation in temperatures obtained from the Kunming
Wen Yi +4 more
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Variability of MLT winds and waves over mid-latitude during the 2000/2001 and 2009/2010 winter stratospheric sudden warming [PDF]
Annales Geophysicae, 2012 The mesosphere and lower thermosphere (MLT) wind structure over Wuhan (30° N, 114° E) in 2000/2001 winter and over Langfang (39.4° N, 116.6° E) in 2009/2010 winter are examined to reveal the effects of stratospheric sudden warming (SSW) in mid-low ...
X. Chen, X. Chen, X. Hu, C. Xiao
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TIMED Doppler Interferometer measurements of neutral winds at the mesosphere and lower thermosphere and comparison to meteor radar winds [PDF]
Annales GeophysicaeThe mesosphere and lower thermosphere (MLT) comprise a highly variable region that forms the transition region between the middle and upper atmosphere.
A. Gauthier +21 more
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Terdiurnal tides in the MLT region over Cachoeira Paulista (22.7ºS; 45ºW) [PDF]
Revista Brasileira de Geofísica, 2007 Five years of winds measurements obtained by a SkiYmet meteor radar at Cachoeira Paulista (22.7oS, 45.0oW) are used to investigate the terdiurnal tide. This type of tide is frequently observed in the meteor region but the mechanisms responsible for its production are not yet completely explained.
Tokumoto, Aparecido Seigim +2 more
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Spatial distributions of electromagnetic field variations and injection regions during the 20 November 2007 sawtooth event [PDF]
Annales Geophysicae, 2009 We report multi-spacecraft and ground-based observations of a "sawtooth" event on 20 November 2007. For this event, data from three THEMIS, two GOES, and four LANL spacecraft are available as well as those from extensively distributed ground ...
S. Kasahara +12 more
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Would El Niño enhance or suppress the migrating diurnal tide in the MLT region? [PDF]
, 2021 Abstract. Previous observations and simulations are controversial as to whether El Niño will increase or decrease the diurnal tide (DW1) in the upper mesosphere and lower thermosphere (MLT) region. This study revisited the linear response of the MLT DW1 to El Niño during the winter (December-January-February) based on 19-year satellite observations of ...
Yetao Cen +5 more
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Observational Evidence of Nonlinear Wave‐Wave Interaction Over Antarctic MLT Region
Journal of Geophysical Research: Space Physics, 2023 AbstractUsing meteor radar observations over King Sejong Station (62.22°S, 58.78°W) in the Antarctic Peninsula, we investigated the wave‐wave interaction in the mesosphere and lower thermosphere (MLT) region. We analyzed hourly horizontal wind measurements at altitudes of 84–96 km from March 2016 through February 2017 and found that the MLT region is ...
Jaewook Lee +6 more
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A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations
Space Weather, 2022 Based on electron density observations between September 2012 and July 2019 from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board the Van Allen Probes (VAPs) spacecraft, this paper makes a statistical ...
Jing‐Tian Lv +3 more
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مجله كليه طب الكنديBackground: This study investigated the immunohistochemical expression of hormone receptors (ER, PR, HER2, Ki-67) and tumor suppressor genes (PTEN, p53) in women with breast cancer from Erbil, Iraq, focusing on how these expressions relate to patient ...
Mehri Mirhaj Mohammedsalih +1 more
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