Zobrazeno 1 - 10
of 3 605
pro vyhledávání: '"Q. Gan"'
Autor:
J. S. Evans, J. Correira, J. D. Lumpe, R. W. Eastes, Q. Gan, F. I. Laskar, S. Aryal, W. Wang, A. G. Burns, S. Beland, X. Cai, M. Codrescu, S. England, K. Greer, A. Krywonos, W. E. McClintock, T. Plummer, V. Veibell
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 16, Pp n/a-n/a (2024)
Abstract After days of intense solar activity, active region AR3664 launched seven CMEs toward Earth producing an extreme G5 geomagnetic storm commencing at 17:05 UT on 10 May 2024. The storm impacted power grids, disrupted precision navigational sys
Externí odkaz:
https://doaj.org/article/242be7ca30964f1580aa779275e222e4
Autor:
Q. Gan, J. Oberheide, L. Goncharenko, L. Qian, J. Yue, W. Wang, W. E. McClintock, R. W. Eastes
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract Using observations from the Global‐scale Observations of the Limb and Disk (GOLD) mission, we investigate post‐sunset ionospheric responses to the September 2019 Antarctic sudden stratospheric warming –first ever from a synoptic perspe
Externí odkaz:
https://doaj.org/article/8f9d9b805ce44a20841fc173e5819173
Autor:
S. Aryal, Q. Gan, J. S. Evans, F. I. Laskar, D. K. Karan, X. Cai, K. R. Greer, W. Wang, W. E. McClintock, R. W. Eastes
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract The 2022 Tongan volcanic eruption released significant energy into the atmosphere. Tropospheric satellite images show that the eruption generated pressure waves that traveled globally. The Global Observation of the Limb and Disk (GOLD) missi
Externí odkaz:
https://doaj.org/article/b87074afcfcf4a32876c025fb5dc0e77
Publikováno v:
Annales Geophysicae, Vol 35, Pp 107-116 (2017)
By applying 12-year (1998–2009) radiosonde data over a midlatitude station, we studied the vertical wavenumber spectra of three-dimensional wind fluctuations. The horizontal wind spectra in the lower stratosphere coincide well with the well-know
Externí odkaz:
https://doaj.org/article/b1f9868386024fe5ab0c26398bc9e038
Publikováno v:
Annales Geophysicae, Vol 34, Pp 331-345 (2016)
Spatial and temporal variabilities of Kelvin waves during stratospheric sudden warming (SSW) events are investigated by the ERA-Interim reanalysis data, and the results are validated by the COSMIC temperature data. A case study on an exceptionally
Externí odkaz:
https://doaj.org/article/0a688f6f883d4ce9b57bfd7ebfd78812
Autor:
K. M. Huang, A. Z. Liu, S. D. Zhang, F. Yi, C. M. Huang, Q. Gan, Y. Gong, Y. H. Zhang, R. Wang
Publikováno v:
Annales Geophysicae, Vol 33, Pp 1321-1330 (2015)
By using meteor radar, radiosonde and satellite observations over 20° N and NCEP/NCAR reanalysis data during 81 days from 22 December 2004 to 12 March 2005, a quasi-27-day oscillation propagating from the troposphere to the mesosphere is reported
Externí odkaz:
https://doaj.org/article/178ddc84d6224cd38e033adee0699c39
Publikováno v:
Annales Geophysicae, Vol 33, Pp 913-922 (2015)
In the current work, temperature and wind data from the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite during the years 2002–2007 were used to describe the seasonal variations of the westward propagating 6.5-day pla
Externí odkaz:
https://doaj.org/article/6413f80904bd48a0bd64023bc26aa4c5
Publikováno v:
Annales Geophysicae, Vol 33, Pp 865-874 (2015)
The diurnal tide (DT) and its variability in the lower atmosphere over Chongyang (114.14° E, 29.53° N) were studied based on the newly established Wuhan University (WHU) VHF radar observations with the height intervals of 0.145 km (below 9 km) a
Externí odkaz:
https://doaj.org/article/bbc117919e494101abd1e4da4daf2d5a
Publikováno v:
Annales Geophysicae, Vol 32, Pp 1129-1143 (2014)
We extended the broad spectral method proposed by Zhang et al. (2013) for the extraction of medium- and high-frequency gravity waves (MHGWs). This method was applied to 11 years (1998–2008) of radiosonde data from 92 stations in the Northern Hem
Externí odkaz:
https://doaj.org/article/b9830f403431470cad98c2616948547c
Publikováno v:
Annales Geophysicae, Vol 32, Pp 263-275 (2014)
Starting from a set of fully nonlinear equations, this paper studies that two initial gravity wave packets interact to produce a third substantial packet in a nonisothermal and dissipative atmosphere. The effects of the inhomogeneous temperature a
Externí odkaz:
https://doaj.org/article/c5d3efc217bc45fda357786db0edc3f0