气候变化领域集成服务门户(CCPortal): Gravity Wave Influences On Mesoscale Divergence: An Observational Case Study

CCPortal

DOI	10.1029/2019GL086539
	Gravity Wave Influences On Mesoscale Divergence: An Observational Case Study
	Stephan C.C.; Lane T.P.; Jakob C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Characteristics of tropospheric low-frequency gravity waves are diagnosed in radiosonde soundings from the Tropical Warm Pool-International Cloud Experiment near Darwin, Australia. The waves have typical vertical wavelengths of about 4 km, horizontal wavelengths of about 600 km, and intrinsic periods of about 12 hr. These scales match those of the vertical, horizontal, and temporal variability found in area-averaged horizontal wind divergence over the same domain. Vertical profiles of divergence show wave-like structures with variability of the order of 2 (Formula presented.) 10 (Formula presented.) s (Formula presented.) in the free troposphere. The results for Darwin are similar to previously reported observed mesoscale patterns of divergence/convergence over the tropical Atlantic. The findings imply that tropical divergence on spatial scales of a few hundred kilometers, which is known to influence the organization of convection, may be forced by gravity waves. © 2020. The Authors.
英文关键词	Radiosondes; Tropics; Troposphere; Free troposphere; Horizontal winds; Mesocale; Spatial scale; Temporal variability; Tropical atlantic; Tropical convection; Vertical profile; Gravity waves; atmospheric convection; mesoscale eddy; observational method; radiosonde; troposphere; Atlantic Ocean; Atlantic Ocean (Tropical); Australia; Darwin; Northern Territory
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170893
作者单位	Max Planck Institute for Meteorology, Hamburg, Germany; School of Earth Sciences, The University of Melbourne, Melbourne, VIC, Australia; ARC Centre of Excellence for Climate Extremes, Sydney, NSW, Australia; School of Earth, Atmosphere and Environment, Monash University, Melbourne, VIC, Australia
推荐引用方式 GB/T 7714	Stephan C.C.,Lane T.P.,Jakob C.. Gravity Wave Influences On Mesoscale Divergence: An Observational Case Study[J],2020,47(1).
APA	Stephan C.C.,Lane T.P.,&Jakob C..(2020).Gravity Wave Influences On Mesoscale Divergence: An Observational Case Study.Geophysical Research Letters,47(1).
MLA	Stephan C.C.,et al."Gravity Wave Influences On Mesoscale Divergence: An Observational Case Study".Geophysical Research Letters 47.1(2020).