JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM12] Coupling Processes in the Atmosphere-Ionosphere System

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Yue Deng(University of Texas at Arlington), Loren Chang(Institute of Space Science, National Central University)

[PEM12-01] Inter-hemispheric Coupling During Sudden Stratospheric Warming Events

Kristina Shizuka Yamase Skarvang2, *Patrick J Espy1, Robert E. Hibbins1, Willem E. van Caspel1 (1.Norwegian Univ. of Science and Technology, Birkeland Centre for Space Science, 2.Norwegian Univ. of Science and Technology)

Keywords:Tide, SSW, Inter-hemispheric, Mesosphere

Long-term data sets of mesospheric winds and temperatures from the Antarctic station at Rothera (68 S, 68 W) and the Northern Hemisphere radar at Trondheim (64 N, 10.5 E) have be used to examine the Southern Hemisphere (SH) response to sudden stratospheric warmings (SSW) in the Northern Hemisphere (NH). Temperatures and winds in the upper mesosphere (80-100 km) in the SH from a Skiymet meteor radar system are compared to those from a similar system in the NH to examine whether the SSW perturb the global circulation or whether the effects are confined to the NH only. The winds and temperatures from both systems are also be compared with re-analysis and satellite data to examine the role of equatorial ozone in the coupling. The analysis first characterized and removed seasonal cycles, and then performed a super-posed epoch centred on SSW events. The results of this comparison, as well as possible mechanisms for the SH signature, will be presented and discussed.