Interhemispheric Asymmetry in the High-Latitude Neutral Density Variations During the 13-14 March 2022 Storm

被引：0

作者：

Zhu, Qingyu ^{[1
]}

Lu, Gang ^{[2
]}

Vines, Sarah ^{[3
]}

Hairston, Marc ^{[1
]}

机构：

[1] Univ Texas Dallas, William B Hanson Ctr Space Sci, Richardson, TX 75083 USA

[2] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80305 USA

[3] Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX USA

来源：

SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS | 2024年 / 22卷 / 11期

基金：

美国国家科学基金会;

关键词：

ENERGY;

D O I：

10.1029/2024SW004084

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During the second recovery phase of the 13-14 March 2022 storm, intense high-latitude neutral mass density spikes are detected by satellites at similar to 500 km in both hemispheres. These density spikes, accurately modeled by the Global Ionospheric Thermosphere Model (GITM), are identified as high-latitude neutral mass density anomalies (HDAs). The GITM simulation indicates that these HDAs, which extends over the polar region, are important features in high-latitude neutral density. Furthermore, GITM reveals that these HDAs are manifestations of transpolar traveling atmospheric disturbances triggered on the dawn side. Moreover, GITM also reveals significant interhemispheric asymmetries (IHAs) in the magnitude, propagation speed, and propagation direction of HDAs, which are linked to the IHAs in the distribution and magnitude of Joule heating deposited as well as the thermospheric background conditions. This study presents a dynamic perspective on the IHA of storm-time high-latitude neutral density variations that is particularly helpful to the proper interpretation of satellite observations.

引用

页数：13