标题： 冬季平流层突然变暖后的夜光云：首次观测 显示英文标题

标题： Winter Noctilucent Clouds Following Sudden Stratospheric Warming: First Observations

摘要： 中层大气结构与夏季夜光云相同，在2024年12月17日至19日的西伯利亚俄罗斯夜晚被观测到。 基于可用的摄影数据，通过本影色度法测得云层的平均高度为70.1+-1.5公里。 这在空间和时间上与中层大气中低于160K的深度温度最低点一致，随后跟随极地涡旋的位移和云层下方平流层的变暖。 使用卫星数据上的温度和水汽来研究这一意外事件的性质。 显示英文摘要

摘要： Mesospheric structures identical to summer noctilucent clouds were observed during the nights of December 17-19, 2024 in Siberian Russia. Basing on the available photo data, the mean altitude of the clouds 70.1+-1.5 km was measured by umbral colorimetric method. This coincided spatially and temporary with deep temperature minimum below 160K in mesosphere, followed the polar vortex displacement and warming of stratosphere below the clouds. The satellite data on temperature and water vapor is used to study the nature of this unexpected event.