On the Marsupial Theory for Tropical Cyclogenesis Within Tropical Wave and Monsoon Trough Environments: A Multiscale Observational, Modeling and Theoretical Study
关于热带波和季风槽环境中热带气旋发生的有袋动物理论:多尺度观测、建模和理论研究
基本信息
- 批准号:0733380
- 负责人:
- 金额:$ 20万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Interagency Agreement
- 财政年份:2008
- 资助国家:美国
- 起止时间:2008-02-15 至 2014-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
When, where, and how weakly rotating convective regions develop into full-blown tropical cyclones remains an essentially unsolved problem in atmospheric dynamics, albeit a problem with unusually significant implications for forecasting high-impact weather. In this project Montomgery and his group will explore his "marsupial hypothesis," which relates tropical cyclogenesis to the critical layers of tropical waves. The "marsupial hypothesis" comprises three sub-hypotheses:1) The weakly rotating regions of thunderstorms that develop into tropical cyclones form at the critical level, or steering level, of tropical traveling waves. At this level the wave speed equals that of the background wind, so that fluid, including the the weakly rotating "proto-vortex," moves with the wave.2) For stronger waves, the critical level evolves into a critical layer, which forms a pocket of closed streamlines. In this pocket, the developing vortex is partially isolated or protected (thus "marsupial" theory) from the entrainment of dry air and the deleterious affects of vertical shear.3) Tropical waves are amplified by the latent heat release associated with these proto-vortices.These hypotheses will be tested in a program of observational analyses and modeling. Preliminary analyses of atmospheric data indicates that critical layers of African easterly waves are, as hypothesized, preferred regions for tropical cyclone development, and that convection within the wave trough helps to maintain the wave. These analyses will be extended to monsoon trough cases, and cyclogenesis cases will be balanced with null cases, in which cyclogenesis does not occur. Problems with reanalyses in the tropics - that the results are strongly conditioned by the cumulus parameterization scheme - will be circumvented by analyzing data from other sources, including the Tropical Rainfall Measurement Mission (TRMM) satellite data, and in-situ data obtained during the summer-fall 2008 T-PARC (THe Observing System Research and Predictability Experiment (THORPEX) Pacific Asian Regional Campaign) field campaigns.Model experiments will be carried out using the Weather Research and Forecasting (WRF) model. Dry experiments will examine the vortex shedding from tropical waves that produces proto-vortices. Moist experiments with standard treatments of cumulus convection will examine wave-amplification, and cloud-scale modeling will consider the growth of proto-vortices.Broader impacts of this project derive from the societal benefits of improved understanding of tropical cyclogenesis and the potential impact of such understanding on prediction. Montgomery's group will collaborate with NOAA's Hurricane Research Division in their annual field program of research. Graduate students from the military services will be trained.
弱旋转对流区何时、何地以及如何发展成全面的热带气旋仍然是大气动力学中一个基本上未解决的问题,尽管这个问题对预测高影响天气具有异常重要的意义。在这个项目中,蒙托吉里和他的团队将探索他的“有袋动物假说”,该假说将热带气旋生成与热带海浪的临界层联系起来。“有袋动物假说”包括三个子假说:1)发展成热带气旋的雷暴的弱旋转区域形成于热带行波的临界水平或转向水平。在这个水平上,波的速度等于背景风的速度,因此流体,包括弱旋转的“原涡”,随波移动。2)对于更强的波,临界水平演变成临界层,形成封闭流线的口袋。在这个口袋里,发展中的涡旋被部分隔离或保护(因此是“有袋动物”理论),不受干燥空气的夹带和垂直切变的有害影响。3)热带波被与这些原涡旋相关的潜热释放放大。这些假设将在观测分析和模拟程序中进行检验。大气数据的初步分析表明,非洲东风波的关键层,假设,热带气旋发展的首选区域,以及波槽内的对流有助于维持波。这些分析将扩展到季风槽的情况下,和气旋的情况下,将与空的情况下,其中气旋不发生平衡。 热带地区再分析的问题--结果受到积云参数化方案的强烈影响--将通过分析其他来源的数据来规避,包括热带降雨测量使命(TRMM)卫星数据,和2008年夏季-秋季T-PARC期间获得的现场数据(观测系统研究及预报试验太平洋亚洲区域活动)实地活动。模式试验将利用天气研究及预报(WRF)模型。干实验将检查产生原涡旋的热带波的涡旋脱落。湿实验与积云对流的标准处理将检查波放大,云尺度模拟将考虑原vortices. The更广泛的影响,这个项目的社会效益,提高对热带气旋生成的理解和这种理解的预测的潜在影响。蒙哥马利的小组将与美国国家海洋和大气管理局的飓风研究部门合作进行年度实地研究计划。将培训来自军队的研究生。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Michael Montgomery其他文献
Full-scale monitoring of a tall, slender building with viscoelastic coupling dampers
对带有粘弹性耦合阻尼器的高耸细长建筑进行全面监测
- DOI:
10.1016/j.engstruct.2025.120637 - 发表时间:
2025-10-01 - 期刊:
- 影响因子:6.400
- 作者:
Brian Couture;Constantin Christopoulos;Michael Montgomery - 通讯作者:
Michael Montgomery
Colored planar algebras for commuting squares and applications to Hadamard subfactors
用于交换正方形的有色平面代数及其在哈达玛子因子中的应用
- DOI:
10.1016/j.jfa.2023.110010 - 发表时间:
2023-09-01 - 期刊:
- 影响因子:1.600
- 作者:
Michael Montgomery - 通讯作者:
Michael Montgomery
Dmacs: a Media Access Protocol for Single-hop Wdm Lightwave Networks
Dmacs:单跳 Wdm 光波网络的媒体访问协议
- DOI:
- 发表时间:
1994 - 期刊:
- 影响因子:0
- 作者:
Michael Montgomery;Scott F Midkii - 通讯作者:
Scott F Midkii
Alkalinization is ineffective for severe hyperkalemia in nonnephrectomized dogs. Hyperkalemia Research Group.
碱化对于未切除肾的狗的严重高钾血症无效。
- DOI:
10.1111/j.1553-2712.1997.tb03713.x - 发表时间:
1997 - 期刊:
- 影响因子:0
- 作者:
J. Kaplan;L. Braitman;W. Dalsey;Michael Montgomery;A. Mangione - 通讯作者:
A. Mangione
Michael Montgomery的其他文献
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{{ truncateString('Michael Montgomery', 18)}}的其他基金
Continued Fundamental Studies on Secondary Eyewall Formation, Contraction and Dissipation
继续对次生眼壁形成、收缩和耗散进行基础研究
- 批准号:
2201246 - 财政年份:2022
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
Collaborative Research: Basic Studies in Three-dimensional Tropical Cyclone Intensification
合作研究:三维热带气旋增强的基础研究
- 批准号:
1656075 - 财政年份:2017
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
Fundamental Studies in Secondary Eyewall Formation
次生眼壁形成的基础研究
- 批准号:
1313948 - 财政年份:2013
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
Collaborative Proposal: The ELM Survey, Short Period Binary White Dwarfs as Supernova Progenitors, Gravitational Wave Sources, and Probes of Extreme Stellar Evolution
合作提案:ELM巡天、作为超新星前身的短周期双星白矮星、引力波源和极端恒星演化探测器
- 批准号:
1312983 - 财政年份:2013
- 资助金额:
$ 20万 - 项目类别:
Standard Grant
A Moist Pathway of Extratropical Cyclogenesis and Its Implications for High Impact Weather and Atmospheric Predictability
温带气旋的潮湿路径及其对高影响天气和大气可预测性的影响
- 批准号:
0849356 - 财政年份:2010
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
Fundamental Astrophysics from Precision Asteroseismology
精密星震学的基础天体物理学
- 批准号:
0909107 - 财政年份:2009
- 资助金额:
$ 20万 - 项目类别:
Standard Grant
SGER:Transcription of Traditional Appalachian Speech
SGER:传统阿巴拉契亚语音的转录
- 批准号:
0855904 - 财政年份:2008
- 资助金额:
$ 20万 - 项目类别:
Standard Grant
PRE-Depression Investigation of Cloud-systems in the Tropics (PREDICT)
热带地区云系统的抑郁前调查 (PREDICT)
- 批准号:
0819288 - 财政年份:2008
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
Collaborative Research: Dynamic and Thermodynamic Control of Tropical Cyclone Intensity in Sheared Environments
合作研究:切变环境中热带气旋强度的动态和热力学控制
- 批准号:
0649946 - 财政年份:2006
- 资助金额:
$ 20万 - 项目类别:
Continuing Grant
CMG: Analysis of Transport, Mixing, and Coherent Structures in Hurricane Intensity
CMG:飓风强度中的传输、混合和相干结构分析
- 批准号:
0715426 - 财政年份:2006
- 资助金额:
$ 20万 - 项目类别:
Interagency Agreement
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