气候变化领域集成服务门户(CCPortal): Convective Mass-Flux From Long Term Radar Reflectivities Over Darwin, Australia

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DOI	10.1029/2021JD034910
	Convective Mass-Flux From Long Term Radar Reflectivities Over Darwin, Australia
	Savazzi A.C.M.; Jakob C.; Siebesma A.P.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:19
英文摘要	Most cumulus parametrizations today make use of a simple conceptual model of convection, called the mass-flux approach. This approach depicts convection as an ensemble of updrafts and downdrafts occurring within a model grid-box. The aim of this study is to determine convective mass-fluxes and their constituents on the scale of a 100 km GCM grid-box from a C-band polarimetric radar and thereafter investigate the relative role of area fraction and vertical velocity in determining the shape and magnitude of bulk mass-flux profiles. We make use of observational estimates of these quantities spanning 13 wet seasons in the tropical region of Darwin. Following a bulk approach, the results show that the distribution of mass-flux is positively skewed and its mean profile peaks at 4 km. This is the result of constant area fractions and increasing vertical velocities below that level. Above 4 km, in-cloud vertical velocity plays a marginal role compared to the convective area fraction in controlling mass-flux profiles. © 2021 The Authors.
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/236973
作者单位	Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands; School of Earth, Atmosphere and Environment, Monash University, Melbourne, VIC, Australia; ARC Centre of Excellence for Climate Extremes, Monash University, Melbourne, VIC, Australia; Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
推荐引用方式 GB/T 7714	Savazzi A.C.M.,Jakob C.,Siebesma A.P.. Convective Mass-Flux From Long Term Radar Reflectivities Over Darwin, Australia[J],2021,126(19).
APA	Savazzi A.C.M.,Jakob C.,&Siebesma A.P..(2021).Convective Mass-Flux From Long Term Radar Reflectivities Over Darwin, Australia.Journal of Geophysical Research: Atmospheres,126(19).
MLA	Savazzi A.C.M.,et al."Convective Mass-Flux From Long Term Radar Reflectivities Over Darwin, Australia".Journal of Geophysical Research: Atmospheres 126.19(2021).