Satellite Observations and a Numerical Study of Recurring Atmospheric Gravity Waves Along the South China Sea Coast

doi:10.1029/2022JD038467

IOCAS-IR > 海洋环流与波动重点实验室

	Satellite Observations and a Numerical Study of Recurring Atmospheric Gravity Waves Along the South China Sea Coast
	Liu, Aiyue 1,2; Shen, Dongliang 1; Li, Xiaofeng 1
	2023-08-27
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
卷号	128 期号:16 页码:23
通讯作者	Li, Xiaofeng([email protected])
摘要	Several groups of diurnal recurring atmospheric gravity waves (AGWs) were observed on an Environmental Satellite advanced synthetic aperture radar image and six Moderate Resolution Imaging Spectroradiometer (MODIS) images acquired along the South China Sea coast for 4 days from 3 to 6 March 2010. The unique observations are that the previously observed AGWs seldom recurred in a region for multiple days. Each cycle of these observed AGWs had undergone three stages: generation, propagation, and dissipation daily. Both SAR-imaged sea surface roughness patterns and MODIS-observed cloud imprints show that the AGWs were a group of transverse waves along the coast. We implemented the Weather Research and Forecasting (WRF) model to understand the physical characteristics and dynamical mechanisms of these AGWs. The WRF simulated results indicated that the AGWs were upstream waves triggered by the interaction of the southerly wind and topography and dissipated by the diurnal warming. We applied the spectral analysis to the model-simulated vertical wind field and explored that the leading wave crest length and crest-to-crest wavelength are 156.25 and 7.14 km, respectively. The wave period and phase speed of the upstream AGWs within the vital observation of SAR are 1.81 hr and 1.26 m/s, respectively. The fifth-generation European Centre for Medium-Range Weather Forecasts reanalysis hourly data was used to explore the rarity of the recurring AGWs and proved that the stable air-sea temperature difference was the main reason for the rarity of this event. And sufficient cloud content (>50%) was necessary for the MODIS to capture the AGWs' imprints.
关键词	the WRF model simulation atmospheric gravity waves satellite observations
DOI	10.1029/2022JD038467
收录类别	SCI
语种	英语
资助项目	major project of the Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060101]; major project of the Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000]; Major scientific and technological innovation projects in Shandong Province[2019JZZY010102]; CAS Program[Y9KY04101L]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001057473800001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	BANDED CONVECTIVE ACTIVITY ; RADAR OBSERVATIONS ; WEATHER RESEARCH ; MODEL ; SAR ; PROPAGATION ; SURFACE ; MICROPHYSICS ; CLOUDS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182904
专题	海洋环流与波动重点实验室
通讯作者	Li, Xiaofeng
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Liu, Aiyue,Shen, Dongliang,Li, Xiaofeng. Satellite Observations and a Numerical Study of Recurring Atmospheric Gravity Waves Along the South China Sea Coast[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2023,128(16):23.
APA	Liu, Aiyue,Shen, Dongliang,&Li, Xiaofeng.(2023).Satellite Observations and a Numerical Study of Recurring Atmospheric Gravity Waves Along the South China Sea Coast.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128(16),23.
MLA	Liu, Aiyue,et al."Satellite Observations and a Numerical Study of Recurring Atmospheric Gravity Waves Along the South China Sea Coast".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128.16(2023):23.