气候变化领域集成服务门户(CCPortal): Diagnostics of Convective Transport Over the Tropical Western Pacific From Trajectory Analyses

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DOI	10.1029/2020JD034341
	Diagnostics of Convective Transport Over the Tropical Western Pacific From Trajectory Analyses
	Smith W.P.; Pan L.L.; Honomichl S.B.; Chelpon S.M.; Ueyama R.; Pfister L.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:17
英文摘要	This study characterizes the representation of convective transport by a Lagrangian trajectory model driven by kinematic (pressure tendency ω) vertical velocity. Four (re)analysis wind products are used in backward trajectory calculations with the TRAJ3D model, and their representations of convective transport are analyzed. Two observation-based diagnostics are used for the evaluation: a database of observed convective cloud tops derived from satellite measurements and a set of transit time distributions (TTDs) derived from an airborne campaign during January–February 2014 in a domain over the Tropical Western Pacific (TWP). The analysis is designed to derive trajectory-based TTDs that can be directly evaluated using the observation-based TTDs. The results indicate a broad consistency between two independent TTD derivations characterizing vertical transport over the TWP, with a significant portion of convective transport processes represented in trajectory experiments driven by the selected (re)analysis wind products. The convective and boundary layer source regions of upper tropospheric air parcels are shown to be consistent with the climatological flow regime within the TWP. Furthermore, contributions of convection are identified in the ω fields of the (re)analysis wind data sets, as indicated by the spatiotemporal correlation of enhanced vertical velocity and observed convection. These results demonstrate the successful application of two observation-based diagnostics and quantify the ability for kinematic trajectory models to represent convective transport processes. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	(re)analysis data sets; convective transport; trajectory modeling; transit time distribution
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/237045
作者单位	Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Earth and Environmental Sciences, City University of New York Graduate Center, New York, NY, United States; NASA Ames Research Center, Moffett Field, CA, United States
推荐引用方式 GB/T 7714	Smith W.P.,Pan L.L.,Honomichl S.B.,et al. Diagnostics of Convective Transport Over the Tropical Western Pacific From Trajectory Analyses[J],2021,126(17).
APA	Smith W.P.,Pan L.L.,Honomichl S.B.,Chelpon S.M.,Ueyama R.,&Pfister L..(2021).Diagnostics of Convective Transport Over the Tropical Western Pacific From Trajectory Analyses.Journal of Geophysical Research: Atmospheres,126(17).
MLA	Smith W.P.,et al."Diagnostics of Convective Transport Over the Tropical Western Pacific From Trajectory Analyses".Journal of Geophysical Research: Atmospheres 126.17(2021).