SGER: Flight Tests and Validation of the New HIAPER GISMOS Radio Occultation System

该补助金支持主要研究者（PI）收集和处理必要的数据，以全面验证高性能环境研究机载仪器平台（HIAPER）全球导航卫星系统（GNSS）多基地和掩星传感仪器系统（GISMOS），以证明其在对流层进行高垂直分辨率大气探测的能力。目前的GISMOS系统已经与根据HAIPER机载仪器招标（HAIS）开发的其他设备一起经历了沿着第一阶段的测试。尽管高增益天线出现了不可预见的问题，但2007年7月从直接天线收集了3天的数据，这将使测试数据处理软件取得重大进展。与HIAPER上的其他新仪器不同，GISMOS是一种全新的机载测量系统，需要通过独立观测进行全面验证。这只能通过足够广泛的数据集来实现，以便就可实现的准确性得出合理的结论。HIAPER将于2008年2月提供一次飞行，飞越无线电探空仪发射区，并投放至少20个下投式探空仪。这将为完成验证研究提供独立数据。廓线的误差特性将用于观测系统模拟实验，以估计其在数值天气预报中的影响。更广泛的影响：由于全球信息和空间气象观测系统是HIAPER设施的一部分，它将增强大气科学大型社区的研究基础设施。大环境的温度和湿度廓线往往是研究实地活动的一个要求，特别是与热带气旋预报有关的研究。由于对飞机内部物理空间的要求相对有限，它很容易用于大多数任务。这项工作促进了年轻研究人员的培训和教育，让研究生和年轻博士后参与其中，特别是鼓励研究生在实地工作中承担主要责任。HIAPER GISMOS和其他低层大气观测设施也将被用作普渡大学和周边中西部大学的本科大气仪器课程的例子，以教育下一代科学家了解大气观测科学的前沿。

This grant supports the Principal Investigator (PI) to collect and process the data necessary for a full validation of the High-performance Instrumented Airborne Platform for Environmental Research (HIAPER) Global Navigation Satellite System (GNSS) Instrument System for Multistatic and Occultation Sensing (GISMOS) to demonstrate its capabilities for high vertical resolution atmospheric sounding in the troposphere. The current GISMOS system has gone through the first stage of testing along with other equipment developed under the HAIPER Airborne Instrumentation Solicitation (HAIS). Despite unforeseen problems with the high gain antennas, 3 days of data were collected in July 2007 from the direct antenna that will allow significant advances for testing data processing software. Unlike other new instrumentation on board HIAPER, the GISMOS is an entirely new airborne measuring system that requires thorough validation with independent observations. This can only be achieved with a dataset that is extensive enough for sound conclusions regarding the achievable accuracy. A flight is available on HIAPER for February 2008 to make overflights of radiosonde launches and drop at least 20 dropsondes. This will provide independent data to complete the validation study. The error characteristics of the profiles will be used in an Observation System Simulation Experiment in order to estimate their impact in numerical weather prediction.Broader Impacts: Because the GISMOS is part of the HIAPER facility, it will enhance the research infrastructure available for a large community in atmospheric science. Temperature and moisture profiles of the larger environment are often a requirement for research field campaigns, especially for research related to tropical cyclone forecasting. With relatively limited requirements for physical space inside the aircraft, it would easily be available for most missions. The work promotes training and education of young researchers by involving graduate students and young post-docs, in particular with graduate students encouraged to take major responsibility in the fieldwork. The HIAPER GISMOS and other Lower Atmosphere Observing Facilities will also be used as examples in the undergraduate atmospheric instrumentation curriculum at Purdue and surrounding Midwestern universities to educate the next generation of scientists about the frontiers in atmospheric observational science.