Su Yucheng, Jiao Boyang, Fu Shuai, Jiang Yi
Zhuhai Public Meteorological Service Center, Zhuhai, 519000, People's Republic of China.
School of Atmospheric Sciences and Key Laboratory of Tropical Atmosphere-Ocean System, Ministry of Education, Sun Yat-sen University, Zhuhai, 519082, People's Republic of China.
Heliyon. 2024 May 14;10(10):e31241. doi: 10.1016/j.heliyon.2024.e31241. eCollection 2024 May 30.
Planetary waves, including quasi-2, -5, -10, -16-day waves, play significant roles in stratospheric dynamics. However, the existing knowledge on quasi-10-day waves (Q10DWs) at high latitudes is limited. This paper investigated the interannual and seasonal variations of Q10DWs with zonal wave numbers varying from the -3 (westward propagation) to 3 (eastward propagation) modes from 2008 to 2022, using temperature data measured by the Microwave Limb Sounder instrument (316-0.001 hPa, corresponding to an altitude of approximately 8-97 km) and temperature/ice water content data measured by the Solar Occultation for Ice Experiment (SOFIE) instrument (10-100 km at latitudes >55°). The findings revealed that the amplitude of Q10DWs in winter was higher than that in other seasons. The amplitude of Q10DWs was observed to substantially decrease with an increase in wavenumber. In addition, the amplitude of stationary Q10DWs in the northern polar region exceeded that in the southern polar region. Moreover, we used observational data from the SOFIE instrument, which simultaneously measures temperature and ice water content (IWC) in the mesosphere, to examine the variations of Q10DWs with respect to the temperature and IWC. Our findings suggest that in the northern polar region, the maximum value of Q10DWs in IWC was occasionally observed earlier than the lowest value of Q10DWs in temperatures.
行星波，包括准2天、5天、10天、16天波，在平流层动力学中发挥着重要作用。然而，目前关于高纬度地区准10天波（Q10DWs）的知识有限。本文利用微波临边探测仪（316 - 0.001 hPa，对应高度约为8 - 97 km）测量的温度数据以及冰云观测太阳掩星实验（SOFIE）仪器（纬度>55°时为10 - 100 km）测量的温度/冰水含量数据，研究了2008年至2022年纬向波数从-3（向西传播）到3（向东传播）模式的Q10DWs的年际和季节变化。研究结果表明，Q10DWs在冬季的振幅高于其他季节。观测到Q10DWs的振幅随着波数的增加而大幅降低。此外，北极地区静止Q10DWs的振幅超过南极地区。此外，我们使用了SOFIE仪器的观测数据，该仪器同时测量中层大气的温度和冰水含量（IWC），以研究Q10DWs随温度和IWC的变化。我们的研究结果表明，在北极地区，IWC中Q10DWs的最大值偶尔比温度中Q10DWs的最小值出现得更早。
