On the response of hailstorms to enhanced CCN concentrations

被引：14

作者：

Carrio, Gustavo G. ^{[1
]}

Cotton, William R. ^{[1
]}

Loftus, A. M. ^{[1
]}

机构：

[1] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

来源：

ATMOSPHERIC RESEARCH | 2014年 / 143卷

基金：

美国国家科学基金会;

关键词：

Hailstorms; CCN effects; Predominant size; PART I; MICROPHYSICS PARAMETERIZATION; CONVECTIVE CLOUDS; MODELING SYSTEM; SIMULATION; DROPLETS; AEROSOLS; IMPACTS; RAMS;

D O I：

10.1016/j.atmosres.2014.03.002

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

In this study we explore the role that cloud base height (or cloud base temperature) plays in the response of hailstorms to increased concentrations of cloud condensation nuclei (CCN). A rather large number of cloud-resolving simulations were performed which explored the parameter space varying both potential CCN concentration and cloud base heights, using a microphysical scheme that predicts 3-moments of the hail size distribution. Several simulated quantities exhibited distinct responses to enhanced CCN concentrations depending on the cloud base altitudes. For instance, positive changes prevailed in the number concentration and the predominant diameter of hailstones on the surface, the integral mass of hail precipitation and the peak rates for high cloud base heights or a deeper layer between cloud base and the freezing level. Conversely, weak effects prevailed for numerical experiments initialized with lower cloud bases. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：342 / 350

页数：9

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