Heavy Rainfall Mechanisms During the 2008 Terrain-influenced Monsoon Rainfall Experiment (TiMREX)

2008年夏季以台湾为中心的地形影响季风降雨实验(TiMREX)收集了特殊的观测资料，以加深对这个多山岛屿上地形影响的强降水系统及其所处的季风环境的物理过程的了解。该奖项将允许研究人员对可能存在问题的雷达探测数据进行质量控制检查，将这些修正后的数据与其他观测数据结合起来，创建更全面的网格分析，然后将这些数据应用于调查导致台湾及其周围地区暴雨的过程。这项研究的智力价值包括专注于分析特殊的雷达探测相互比较发射，关注依赖于探测仪的偏差和辅助卫星和地面遥感，以及探空仪偏差的先验知识，以减少在TiMREX活动期间使用的几种不同大气探测系统所进行的湿度测量的偏差。然后，研究人员将对与暴雨产生有关的过程进行诊断研究，包括调查台湾上游和上空与气流阻塞有关的降雨模式，调查TiMREX地区的大气边界层结构及其与上述降水模式的联系，以及利用探空网络诊断现场试验期间的对流特性。这项研究的更广泛影响将通过改善对暴雨产生机制(和最终预测)的了解而产生，特别是在东亚季风季期间，以及更广泛地在热带和亚热带山地环境包括美洲发现的环境中。将分发经质量控制的TiMREX气象数据集，以供更广泛的科学界查阅和利用，并将支持研究生教育。

The Terrain-influenced Monsoon Rainfall Experiment (TiMREX), centered on Taiwan in the summer of 2008, collected special observations to improve understanding of the physical process associated with terrain-influenced heavy precipitation systems over this mountainous island and the monsoonal environment in which they are embedded. This award will allow researchers to implement quality control checks on potentially problematic rawinsonde data, combine these corrected data with other observations to create a more comprehensive gridded analysis, and then apply these data to investigate processes leading to heavy rainfall over and surrounding Taiwan.The Intellectual Merit of this research includes focus on analysis of special rawinsonde intercomparison launches with an eye toward sonde-dependent biases and ancillary satellite and ground-based remote , satellite and ground based remote sensing, and prior knowledge of sonde biases to reduce biases in moisture measurements taken by the several different atmospheric sounding systems used during the TiMREX campaign. The researchers will then conduct diagnostic studies of processes related to the production of heavy rainfall, including investigation of rainfall patterns upstream of and over Taiwan in relation to flow blocking, investigation of atmospheric boundary layer structure in the TiMREX region and its connection with aforementioned precipitation patterns, and use of the sounding network to diagnose properties of convection during the field experiment.Broader Impacts of the research will accrue through improved understanding of mechanisms (and ultimately prediction) of heavy rainfall, both specifically during the East Asian monsoon season and more generally in mountainous tropical and subtropical environments including those found in the Americas. A quality-controlled version of the TiMREX meteorological dataset will be disseminated for access and exploitation by the broader scientific community, and graduate student education will be supported.