Observations of the convective environment in developing and non‐developing tropical disturbances
Observations of the convective environment in developing and non‐developing tropical disturbances
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DOI：
10.1002/qj.1910
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发表时间：
2012-04
影响因子：
8.9
通讯作者：
Roger K. Smith;M. Montgomery
中科院分区：
文献类型：
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作者：
Roger K. Smith;M. Montgomery
本文介绍了在热带云系统低气压前调查（PREDICT）实验期间从对流层上层释放的机载落风探空仪收集的热力学数据的分析。我们重点关注最终成为飓风卡尔和马修的两个系统，以及一个达到热带风暴状态的系统（加斯顿），但随后减弱，在五天的监测期间从未重新发展。所有事件的数据表明，总可降水量的最大值与地表槽和对流有效势能的值一致，这些值似乎高到足以支持对流组织。这些值大多与对流抑制的低值一致。虚势温度的垂直剖面在某一天的探测之间几乎没有变化，但系统平均值每天都显示出轻微的变暖。相反，由于湿度的变化，伪等效位势温度θe的垂直剖面在某一天的探测之间表现出更大的变化。
Analyses of thermodynamic data gathered from airborne dropwindsondes released from the upper troposphere during the Pre‐Depression Investigation of Cloud Systems in the Tropics (PREDICT) experiment are presented. We focus on two systems that finally became hurricanes Karl and Matthew, and one system (Gaston) that attained tropical storm status, but subsequently weakened and never redeveloped during five days of monitoring. Data for all events show that the largest values of total precipitable water are collocated with the surface trough and with values of convective available potential energy that seem high enough to support convective organization. These values coincide mostly with low values of convective inhibition. Vertical profiles of virtual potential temperature show little variability between soundings on a particular day, but the system means from day to day show a slight warming. In contrast, vertical profiles of pseudo‐equivalent potential temperature, θe, show much more variability between soundings on a particular day on account of the variability in moisture.