气候变化领域集成服务门户(CCPortal): Structures and northward propagation of the quasi-biweekly oscillation in the western north pacific

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DOI	10.1175/JCLI-D-19-0752.1
	Structures and northward propagation of the quasi-biweekly oscillation in the western north pacific
	Kuiping L.I.; Yang Y.; Feng L.; Weidong Y.U.; Shouhua L.I.U.
发表日期	2020
ISSN	0894-8755
起始页码	6873
结束页码	6888
卷号	33 期号:16
英文摘要	This study investigates the northward-propagating quasi-biweekly oscillation (QBWO) in the western North Pacific by examining the composite meridional structures. Using newly released reanalysis and remote sensing data, the northward propagation is understood in terms of the meridional contrasts in the planetary boundary layer (PBL) moisture and the column-integrated moist static energy (MSE). The meridional contrast in the PBL moisture, with larger values north of the convection center, is predominantly attributed to the moisture convergence associated with barotropic vorticity anomalies. A secondary contribution comes from the meridional moisture advection, for which advections by mean and perturbation winds are almost equally important. The meridional contrast in the MSE tendency, due to the recharge in the front of convection and discharge in the rear of convection, is jointly contributed by the meridional and vertical MSE advections. The meridional MSE advection mainly depends on the moisture processes particularly in the PBL, and the vertical MSE advection largely results from the advection of the mean MSE by vertical velocity anomalies, wherein the upper-troposphere ascending motion related to the stratiform heating in the rear of the convection plays the major role. In addition, partial feedback from sea surface temperature (SST) anomalies is evaluated on the basis of MSE budget analysis. SST anomalies tend to enhance the surface turbulent heat fluxes ahead of the convention center and suppress them behind the convention center, thus positively contributing approximately 20% of the meridional contrast in the MSE tendency. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Advection; Atmospheric thermodynamics; Boundary layers; Budget control; Moisture; Remote sensing; Surface waters; Moist static energy; Moisture convergence; Perturbation winds; Planetary boundary layers; Remote sensing data; Sea surface temperature anomalies; Turbulent heat fluxes; Western North Pacific; Oceanography; advection; air-sea interaction; barotropic motion; meridional circulation; numerical model; oscillation; perturbation; sea surface temperature; velocity profile; vorticity; Pacific Ocean; Pacific Ocean (North)
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171177
作者单位	Center for Ocean and Climate Research, First Institute of Oceanography, Ministry of Natural Resources, Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai Campus, Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China; National Marine Data and Information Service, Tianjin, China
推荐引用方式 GB/T 7714	Kuiping L.I.,Yang Y.,Feng L.,et al. Structures and northward propagation of the quasi-biweekly oscillation in the western north pacific[J],2020,33(16).
APA	Kuiping L.I.,Yang Y.,Feng L.,Weidong Y.U.,&Shouhua L.I.U..(2020).Structures and northward propagation of the quasi-biweekly oscillation in the western north pacific.Journal of Climate,33(16).
MLA	Kuiping L.I.,et al."Structures and northward propagation of the quasi-biweekly oscillation in the western north pacific".Journal of Climate 33.16(2020).