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

地形影响季风降雨实验（TiMREX）于2008年夏季以台湾为中心，收集了特殊观测资料，以提高对这个山地岛屿上地形影响强降水系统的物理过程及其所处季风环境的理解。该合同将允许研究人员对潜在问题的雷达探空数据进行质量控制检查，将这些修正后的数据与其他观测结果结合起来，创建更全面的网格分析，然后应用这些数据来调查导致台湾及其周边地区强降雨的过程。本研究的智力优势包括，重点分析特殊的雷达探空仪比对发射，着眼于探空仪相关偏差和辅助卫星和地面遥感，卫星和地面遥感，以及探空仪偏差的先验知识，以减少TiMREX活动期间使用的几种不同大气探测系统所采取的湿度测量偏差。随后，研究人员将进行与强降雨产生有关的过程诊断研究，包括研究台湾上游和台湾上空的降雨模式与气流阻塞的关系，研究TiMREX区域的大气边界层结构及其与上述降水模式的联系，以及在野外实验中使用测深网诊断对流特性。通过提高对强降雨机制（以及最终预测）的理解，这项研究将产生更广泛的影响，特别是在东亚季风季节，以及更普遍的热带和亚热带山区环境，包括在美洲发现的环境。TiMREX气象数据集的质量控制版本将被传播，供更广泛的科学界获取和利用，研究生教育将得到支持。

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.