赤道中间层和低热层昼潮迁移的太阳周期依赖性

IF 4.2 2区 地球科学 Q2 ENVIRONMENTAL SCIENCES
Remote Sensing Pub Date : 2024-09-16 DOI:10.3390/rs16183437
Shuai Liu, Guoying Jiang, Bingxian Luo, Jiyao Xu, Ruilin Lin, Yajun Zhu, Weijun Liu
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引用次数: 0

摘要

大气迁移昼潮(DW1)是中间层和低温层(MLT)的突出变化之一。关于 DW1 是否存在太阳周期依赖性存在争议,不同纬度存在不同甚至相反的结论。本文利用 TIMED/SABER 22 年(2002-2023 年)的全球温度观测资料,研究了赤道中间层和低温层(MLT)温度 DW1 与太阳周期的关系。结果表明:(a) 温度 DW1 的太阳周期依赖性在赤道非常明显。DW1 与 F10.7 指数的最大相关系数出现在 87 公里处,为 0.72;第二个最大相关系数出现在 99 公里处,为 0.62。剔除受平流层准双年振荡(SQBO)扰动事件影响的年份后,该系数在 87 公里处可达到 0.87,在 99 公里处可达到 0.67。(b) DW1 在赤道显示出对太阳周期的滞后响应。DW1 振幅在 87 公里处与 F10.7 指数滞后 1 年,在 99 公里处与 F10.7 指数滞后 2 年。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Solar Cycle Dependence of Migrating Diurnal Tide in the Equatorial Mesosphere and Lower Thermosphere
Atmospheric migrating diurnal tide (DW1) is one of the prominent variabilities in the mesosphere and lower thermosphere (MLT). The existence of the solar cycle dependence of DW1 is debated, and there exist different and even opposite findings at different latitudes. In this paper, the solar cycle dependence of temperature DW1 in the equatorial mesosphere and lower thermosphere (MLT) is investigated using temperature global observations from TIMED/SABER spanning 22 years (2002–2023). The results show that (a) the solar cycle dependence of temperature DW1 is seen very clearly at the equator. The maximum correlation coefficient between DW1 and the F10.7 index occurs at 87km, with 0.72; the second maximum coefficient occurs at 99 km, with 0.62. The coefficient could reach 0.87 at 87 km and 0.67 at 99 km after dropping the years influenced by the Stratosphere Quasi-biennial oscillation (SQBO) disruption event. (b) DW1 shows a lag response to the solar cycle at the equator. DW1 amplitudes show a 1-year lag to the F10.7 index at 87 km and a 2-year lag to the F10.7 index at 99 km.
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来源期刊
Remote Sensing
Remote Sensing REMOTE SENSING-
CiteScore
8.30
自引率
24.00%
发文量
5435
审稿时长
20.66 days
期刊介绍: Remote Sensing (ISSN 2072-4292) publishes regular research papers, reviews, letters and communications covering all aspects of the remote sensing process, from instrument design and signal processing to the retrieval of geophysical parameters and their application in geosciences. Our aim is to encourage scientists to publish experimental, theoretical and computational results in as much detail as possible so that results can be easily reproduced. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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