Observations of a large-scale gravity wave propagating over an extremely large horizontal distance in the thermosphere

Jianpeng Guo, Jeffrey M. Forbes, Fengsi Wei, Xueshang Feng, Huixin Liu, Weixing Wan, Zhiliang Yang, Chaoxu Liu, Barbara A. Emery, Yue Deng

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this paper we report the detection of a large-scale gravity wave propagating over an extremely large horizontal distance in the thermosphere on 28 July 2006. Specifically, after being launched at the northern auroral region on the dayside, this wave propagated equatorward with phase speeds on the order of ∼720 m/s and finally almost traveled around the Earth once horizontally in the thermosphere prior to dissipation. The time taken to dissipate is about 15.5 h. It is the farthest-traveling large-scale gravity wave currently tracked by satellite measurements, made possible by a sudden injection of energy in an unusually clean propagation environment. This experiment of opportunity serves as an important step in furthering our theoretical understanding of gravity wave propagation and dissipation in the thermosphere.

Original languageEnglish
Pages (from-to)6560-6565
Number of pages6
JournalGeophysical Research Letters
Volume42
Issue number16
DOIs
Publication statusPublished - Aug 28 2015

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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