Collaborative Research: Doppler on Wheels International H2O Project Participation and Studies of Convective Initiation
合作研究:Doppler on Wheels International H2O 项目参与和对流引发研究
基本信息
- 批准号:0131325
- 负责人:
- 金额:$ 22.93万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2002
- 资助国家:美国
- 起止时间:2002-04-15 至 2003-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The International H20 Project (IHOP) is a multi-investigator, multi-agency program whose chief aim is improved characterization of the four-dimensional distribution of water vapor and its application to improving the understanding and prediction of convection. Program emphasis is on four important research areas: quantitative precipitation forecasting; convective initiation, atmospheric boundary layer processes; and instrumentation testing. Critical to the success of the IHOP is the measurement of wind and thermodynamic values spanning several scales of motion. This will be accomplished with unique and varied instrumentation. To contribute to achieving the goals of IHOP, the Principal Investigators have submitted collaborative proposals. As part of the required IHOP instrumentation suite, the Principal Investigators will deploy the University of Oklahoma Doppler on Wheels (DOW) radars. These radars provide the IHOP researchers with a high resolution instrument for obtaining detailed wind measurements. These measurements have applications to all four IHOP research components. The DOWs will coordinate with both fixed-site and mobile observing platforms to sample with unprecedented data density and resolution the pre-convective environment, including wind and thermodynamic properties within and along boundaries and convergence lines.For their research contribution to the IHOP, the Principal Investigators will analyze these data to elucidate the magnitude of gradients in the water vapor field and the role of the wind field in focusing these inhomogeneities. For example, the Principal Investigators will determine if locally convergent mesoscale circulations along boundaries or intersections between convergence zones, possibly associated with horizontal convective rolls (HCRs), create pockets of high water vapor content. They will further assess the orientation of water vapor gradients with respect to the HCRs. In addition to boundary studies, the Principal Investigators will perform analyses of data collected on days without obvious convergence zones to determine the degree of variability in the water vapor field in the absence of substantial focusing mechanisms. After understanding the nature and degree of water vapor variability in the pre-convective environment further analysis will focus on the relationship of these inhomogeneities to the convective initiation process based on current hypotheses. For example, if pockets of high water vapor content are found to exist, the Principal Investigators will then examine whether deep convection indeed is favored at these locations. They will examine in detail the depth of lifting associated with observed very small scale circulations and convergence zones to determine the transport of water vapor in the boundary layer. The goal is a better understanding of the mechanisms governing water vapor variability in the preconvective environment and the dynamical processes by which this variability is manifested in the convective initiation process.
国际H20项目(IHOP)是一个多研究者、多机构的项目,其主要目的是改进水蒸气四维分布的表征及其应用,以提高对对流的理解和预测。 该计划的重点是四个重要的研究领域:定量降水预报;对流开始,大气边界层过程;和仪器测试。IHOP成功的关键是跨越几个运动尺度的风和热力学值的测量。 这将通过独特和多样的仪器来实现。 为了帮助实现国际保健和饭店协会的目标,主要调查员提出了合作建议。 作为所需的IHOP仪器套件的一部分,主要研究人员将部署俄克拉荷马州大学的多普勒车轮(DOW)雷达。 这些雷达为IHOP的研究人员提供了获得详细风测量的高分辨率仪器。 这些测量方法适用于IHOP的所有四个研究组成部分。 道斯将与固定站点和移动的观测平台协调,以前所未有的数据密度和分辨率对对流前环境进行采样,包括边界和辐合线内和沿着边界和辐合线的风和热力学特性。主要研究人员将分析这些数据,以阐明水汽场梯度的大小,以及风场在聚焦中的作用这些不均匀性。 例如,主要研究人员将确定是否局部收敛中尺度环流沿着边界或收敛区之间的交叉点,可能与水平对流卷(HCR),创建口袋的高水汽含量。 他们将进一步评估水蒸气梯度相对于HCR的方向。 除了边界研究外,首席研究员还将对在没有明显辐合区的日子收集的数据进行分析,以确定在没有实质性聚焦机制的情况下水汽场的变异程度。 在了解了对流前环境中水汽变化的性质和程度后,进一步的分析将集中在这些不均匀性与基于当前假设的对流起始过程的关系上。 例如,如果发现存在高水蒸气含量的口袋,首席研究员将研究这些位置是否真的有利于深对流。 他们将详细研究与观测到的非常小尺度的环流和辐合区相关的抬升深度,以确定边界层中的水汽输送。我们的目标是更好地了解在对流前环境中的水蒸气变率的机制和动力学过程,这种变化表现在对流启动过程。
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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Joshua Wurman其他文献
The strongest winds in tornadoes are very near the ground
龙卷风中最强劲的风非常接近地面。
- DOI:
10.1038/s43247-023-00716-6 - 发表时间:
2023-02-24 - 期刊:
- 影响因子:8.900
- 作者:
Karen Kosiba;Joshua Wurman - 通讯作者:
Joshua Wurman
Joshua Wurman的其他文献
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{{ truncateString('Joshua Wurman', 18)}}的其他基金
Construction of Mobile C-band, Narrow-Beam, Dual-Frequency, Dual-Polarization, High-Power Radar
移动C波段窄波束双频双极化大功率雷达建设
- 批准号:
1741712 - 财政年份:2017
- 资助金额:
$ 22.93万 - 项目类别:
Standard Grant
An Analysis of the Evolution and Structure of Supercell Storms and Tornadoes
超级单体风暴和龙卷风的演化和结构分析
- 批准号:
1447268 - 财政年份:2015
- 资助金额:
$ 22.93万 - 项目类别:
Continuing Grant
Doppler On Wheels National Mobile Doppler Radar Facility
车轮上的多普勒国家移动多普勒雷达设施
- 批准号:
1361237 - 财政年份:2014
- 资助金额:
$ 22.93万 - 项目类别:
Cooperative Agreement
A Multi-platform Kinematic and Thermodynamic Study of Tornado Genesis, Structure, and Evolution
龙卷风起源、结构和演化的多平台运动学和热力学研究
- 批准号:
1211132 - 财政年份:2012
- 资助金额:
$ 22.93万 - 项目类别:
Standard Grant
Doppler On Wheels Mobile Radar Network
车轮上的多普勒移动雷达网络
- 批准号:
0734001 - 财政年份:2008
- 资助金额:
$ 22.93万 - 项目类别:
Cooperative Agreement
Collaborative Research: VORTEX2--Multi-Scale and Multi-Platform Study of Tornadoes, Supercell Thunderstorms, and Their Environments
合作研究:VORTEX2——龙卷风、超级雷暴及其环境的多尺度和多平台研究
- 批准号:
0801041 - 财政年份:2008
- 资助金额:
$ 22.93万 - 项目类别:
Continuing Grant
Verification of the Origins of Rotation in Tornadoes 2 (VORTEX2) : Scientific Program Overview (SPO)
龙卷风旋转起源的验证 2 (VORTEX2):科学计划概述 (SPO)
- 批准号:
0724318 - 财政年份:2007
- 资助金额:
$ 22.93万 - 项目类别:
Continuing Grant
Collaborative Research: Study of the Genesis, Evolution, Structure, and Dynamic Climatology of Tornadoes and Their Environments
合作研究:龙卷风及其环境的起源、演化、结构和动态气候学研究
- 批准号:
0437505 - 财政年份:2005
- 资助金额:
$ 22.93万 - 项目类别:
Continuing Grant
MRI: A Rapid-Scan Mobile Doppler Radar
MRI:快速扫描移动多普勒雷达
- 批准号:
0336708 - 财政年份:2003
- 资助金额:
$ 22.93万 - 项目类别:
Standard Grant
Collaborative Research: Doppler on Wheels International H2O Project Participation and Studies of Convective Initiation
合作研究:Doppler on Wheels International H2O 项目参与和对流引发研究
- 批准号:
0336712 - 财政年份:2003
- 资助金额:
$ 22.93万 - 项目类别:
Standard Grant
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