气候变化领域集成服务门户(CCPortal): Long-Term Trends and Solar Responses of the Mesopause Temperatures Observed by SABER During the 2002

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DOI	10.1029/2020JD032418
	Long-Term Trends and Solar Responses of the Mesopause Temperatures Observed by SABER During the 2002–2019 Period
	Zhao X.R.; Sheng Z.; Shi H.Q.; Weng L.B.; Liao Q.X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:11
英文摘要	The global distribution and variations of the monthly mesopause temperature are presented during 2002–2019 covering the latitudes of 83°S to 83°N based on Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) observations. To investigate the long-term trend and solar response of the mesopause temperature, a three-component harmonic fit is first applied to remove the seasonal variation from the monthly temperature data series. Then a multiple linear regression model is performed to residual temperatures versus constant, linear trend, solar activity, and geomagnetic activity terms. In this study, the mesopause temperature shows a cooling trend through all latitudes ranging from ~0 to −0.14 K/year with a mean of −0.075 ± 0.043 K/year. The cooling trends in the Southern Hemisphere are stronger than those in the Northern Hemisphere. For high latitudes (60–80°), significant negative trends can be observed during nonsummertime, while no significant trends are found for summertime. The mesopause temperature shows apparent positive responses to solar activity through all latitudes ranging from 3.03 to 4.80 K per 100 solar flux units (sfu) with a mean of 3.99 ± 0.49 K per 100 sfu, which is more significant and stable in the Northern Hemisphere. There is a pronounced drop for mesopause height at polar latitudes, which reflects the shrinking effect at lower altitudes mainly caused by greenhouse gas cooling. We show that the length of the time interval analyzed strongly influences the results. Our results, obtained from 18-year SABER observations, are expected to be a robust measure of the mesopause temperature variability. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	long-term trends; mesopause temperatures; solar response; TIMED/SABER
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185970
作者单位	College of Meteorology and Oceanography, National University of Defense Technology, Changsha, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China
推荐引用方式 GB/T 7714	Zhao X.R.,Sheng Z.,Shi H.Q.,等. Long-Term Trends and Solar Responses of the Mesopause Temperatures Observed by SABER During the 2002–2019 Period[J],2020,125(11).
APA	Zhao X.R.,Sheng Z.,Shi H.Q.,Weng L.B.,&Liao Q.X..(2020).Long-Term Trends and Solar Responses of the Mesopause Temperatures Observed by SABER During the 2002–2019 Period.Journal of Geophysical Research: Atmospheres,125(11).
MLA	Zhao X.R.,et al."Long-Term Trends and Solar Responses of the Mesopause Temperatures Observed by SABER During the 2002–2019 Period".Journal of Geophysical Research: Atmospheres 125.11(2020).