气候变化领域集成服务门户(CCPortal): Seasonal variations of gravity-wave parameters over the northern and southern Tibetan plateau radiosonde observatory

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DOI	10.1002/qj.4650
	Seasonal variations of gravity-wave parameters over the northern and southern Tibetan plateau radiosonde observatory
	Qian, Tingting; Wei, Junhong; Liu, Ge; Wang, Shuguang; Xue, Haile; Zhang, Qiang
发表日期	2024
ISSN	0035-9009
EISSN	1477-870X
英文摘要	Seasonal variations of gravity-wave parameters over the northern and southern Tibetan Plateau are studied using high vertical-resolution L-band radiosonde data during the period 2014 to 2019. The wave parameters include wavelength, frequency, phase speed, group velocity, perturbation energies and momentum fluxes. The synoptic effects on the gravity-wave parameters are discussed and assessed with the Pearson correlation. The tropospheric vertical wavelengths as estimated from the zonal wind perturbation were found to show a pronounced decrease over the southern Tibetan Plateau in the warm season. The tropospheric (stratospheric) horizontal wavelength is shortest (longest) in summer, and the stratospheric horizontalwavelength is longer than the tropospheric horizontalwavelength. The ratio of the intrinsic frequency to the Coriolis parameter is 2.5-5 (2-4.5) with a summer (winter) maximum in the troposphere (lower stratosphere). The ratio is generally higher in the north than in the south. The typical value of the mean tropospheric (stratospheric) intrinsic-phase speed is 3.5-6 (2-11) m center dot s(-1). The mean intrinsic-phase speed in the south is mostly larger than that in the north. The tropospheric zonal ground-based group velocities are dominantly eastward in all seasons. The stratospheric zonal ground-based group velocity shifts fromeastward in summer to westward in winter. In the troposphere, the seasonal cycles of the kinetic energy (KE) and potential energy (PE) exhibit regional differences. The tropospheric vertical fluctuation energy (VE) is independent of both season and region. The stratospheric KE, PE and VE are smaller in the warm season. The negative zonal momentum flux..u' w' and positive meridional momentum flux..v'w' are strongest in winter and summer.
关键词	Atmosphere geographic/climatic zone mid-latitude observational data analysis scale seasonal tools and methods
英文关键词	LOWER STRATOSPHERE; GENERAL-CIRCULATION; JET; TROPOSPHERE; TURBULENCE; FLUXES; RADAR; LIDAR
WOS研究方向	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001147135500001
来源期刊	QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283813
作者单位	China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Sun Yat Sen University; Southern Marine Science & Engineering Guangdong Laboratory; Southern Marine Science & Engineering Guangdong Laboratory (Zhuhai); Sun Yat Sen University; Nanjing University; China Meteorological Administration; China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Sun Yat Sen University
推荐引用方式 GB/T 7714	Qian, Tingting,Wei, Junhong,Liu, Ge,et al. Seasonal variations of gravity-wave parameters over the northern and southern Tibetan plateau radiosonde observatory[J],2024.
APA	Qian, Tingting,Wei, Junhong,Liu, Ge,Wang, Shuguang,Xue, Haile,&Zhang, Qiang.(2024).Seasonal variations of gravity-wave parameters over the northern and southern Tibetan plateau radiosonde observatory.QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY.
MLA	Qian, Tingting,et al."Seasonal variations of gravity-wave parameters over the northern and southern Tibetan plateau radiosonde observatory".QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY (2024).