Articles | Volume 20, issue 22
https://doi.org/10.5194/acp-20-14437-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-14437-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Nov 2020
Research article |
| 27 Nov 2020
| 27 Nov 2020
Gravity-wave-perturbed wind shears derived from SABER temperature observations
Henan Engineering Laboratory for Big Data Statistical Analysis and
Optimal Control, School of Mathematics and Information Sciences, Henan
Normal University, Xinxiang, 453007, China
State Key Laboratory of Space Weather, Center for Space Science and
Applied Research, Chinese Academy of Sciences, Beijing, 100190, China
Jiyao Xu
CORRESPONDING AUTHOR
State Key Laboratory of Space Weather, Center for Space Science and
Applied Research, Chinese Academy of Sciences, Beijing, 100190, China
School of Astronomy and Space Science, University of the Chinese Academy of
Science, Beijing, 100049, China
Catholic University of America, Washington, DC 20064, USA
Atmospheric and Planetary Sciences, Hampton University, Hampton, VA 23668, USA
Hanli Liu
High Altitude Observatory, National Center for Atmospheric Research,
Boulder, CO 80301, USA
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Tong Dang, Binzheng Zhang, Jiuhou Lei, Wenbin Wang, Alan Burns, Han-li Liu, Kevin Pham, and Kareem A. Sorathia
Geosci. Model Dev., 14, 859–873, https://doi.org/10.5194/gmd-14-859-2021, https://doi.org/10.5194/gmd-14-859-2021, 2021
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This paper describes a numerical treatment (ring average) to relax the time step in finite-difference schemes when using spherical and cylindrical coordinates with axis singularities. The ring average is used to develop a high-resolution thermosphere–ionosphere coupled community model. The technique is a significant improvement in space weather modeling capability, and it can also be adapted to more general finite-difference solvers for hyperbolic equations in spherical and polar geometries.
Zhaohai He, Jiyao Xu, Ilan Roth, Chi Wang, and Lei Dai
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2021-4, https://doi.org/10.5194/angeo-2021-4, 2021
Revised manuscript not accepted
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We presented sharp descent in proton fluxes is accompanied by the corresponding depression of SYM-H index, with a one-to-one correspondence, regardless of the storm intensity in our previous work [Xu et al., 2019]. This paper is a further study of the possible mechanisms, and to quantitified evaluate the effect of full adiabatic changes. Inner belt is not very stable as previous announced especially for the out zone of the inner belt. It is necessary to survey characteristics of protons.
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Short summary
Large wind shears in the mesosphere and lower thermosphere are recognized as a common phenomenon. Simulation and ground-based observations show that the main contributor of large wind shears is gravity waves. We present a method of deriving wind shears induced by gravity waves according to the linear theory and using the global temperature observations by SABER (Sounding of the Atmosphere using Broadband Emission Radiometry). Our results agree well with observations and model simulations.
Large wind shears in the mesosphere and lower thermosphere are recognized as a common...
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