CEDAR email: "Interhemispheric asymmetries (IHA) and impact" session in 2024 CEDAR workshop

[Deng, Yue]

Dear colleagues,

We would like to invite you to participate in our “Interhemispheric asymmetries (IHA) and impact on the global I-T system” grand challenge session at Tue.13:30-15:30 & Fri.10-12.

Workshop description:
The state of ionosphere-thermosphere (IT) is hardly ever a mirror image of the other hemisphere even when considering differences due to season and Earth’s magnetic field. Among others, neutral wind and density, composition, ion drift, and plasma distribution, exhibit interhemispheric asymmetries (IHA) on temporal scales from hours to seasonal. Forcing from both magnetosphere-ionosphere (MI) coupling and lower atmosphere can contribute to IHA but it is still not well understood what constitutes a significant asymmetry and its cause. The effect of the strong high-latitude energy deposition on the IT system can be modulated by the background atmospheric state which is strongly affected by the vertical coupling to the lower atmosphere. Meanwhile, during meteorologically disturbed conditions, strong spatial and temporal variations in the wave spectrum and the background conditions lead to significant changes in the mesosphere-lower thermosphere (MLT) and IT system.  In this workshop, we will discuss the causes and effects of IHA in the upper atmosphere.  We solicit contributions examining IHA in the MLT and IT regions to improve our understanding of the generation and impacts of interhemispheric asymmetries.

More details can be found: https://cedarscience.org/workshop/2024-workshop-interhemispheric-asymmetries-iha .

Look forward to seeing you in CEDAR soon.

Conveners:
Yue Deng
Qingyu Zhu
Yun-Ju Chen
Lynn Harvey
Astrid Maute
Aaron Ridley


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