Learjet Investigations of the Microphysics of Maritime Tropical Cumulus Clouds in the Ice Crystal Experiment - Tropical (ICE-T)

这项工作将支持SPEC公司配备仪器的lear25飞机和科学支持人员参与热带云中冰实验（Ice - t），该实验的实地阶段计划于2011年7月进行。利尔-25将补充以前支持的NSF/NCAR（国家大气研究中心）C-130研究飞机，提供一个高度敏捷的平台，能够在陡峭的倾斜转弯中快速爬升，允许快速连续（每1到2分钟）穿透温度为-5到-10摄氏度的关键云层区域。预计暖雨和初冰过程的结合将在这一地区形成。这反过来将使C-130飞机能够集中在云层和亚云区域的较低/较暖区域进行测量，在那里它将记录云凝结核、冰核和下降光谱测量，并收集包括Lear-25操作区域在内的向上看雷达和激光雷达数据。这些合作平台的互补性将大大增加实现ICE-T科学目标的可能性。Learjet配备了最先进的云微物理探测器，包括一个新的3V-CPI仪器，该仪器结合了2D-S（立体声）和云粒子成像仪（CPI）的最佳功能。3V-CPI特别适合探测大（即50微米）的雨滴，这意味着暖雨过程的开始，也适合探测第一冰，这意味着云冰川的开始。这项工作的智力价值集中在增加对不断增长的海洋云中冰的形成的理解，以及它对降水形成、潜热释放和云动力学、粒子清除和化学过程、电荷分离、水蒸气含量和飞机结冰潜力的影响。更广泛的影响将包括与波多黎各大学（UPR）的教职员工和学生的交流，SPEC科学家计划参加该大学的小型会议，并与该领域的一部分学生进行潜在的互动。通过ICE-T支持的分析最终有望提高地球水文和气候系统的预测能力。

This effort will support participation of the SPEC, Inc. instrumented Lear-25 aircraft and scientific support staff during the Ice in Clouds Experiment - Tropical (ICE-T), whose field phase is scheduled to occur during July 2011. The Lear-25 will complement the previously supported NSF/NCAR (National Center for Atmospheric Research) C-130 research aircraft by providing a highly agile platform capable of rapid climb rates during steep banking turns that will allow the rapid successive (every 1 to 2 min) penetrations of the key cloud region characterized by temperatures of -5 to -10 degC. It is in this zone where a combination of warm-rain and first-ice processes are anticipated to develop. This will in-turn allow the C-130 aircraft to concentrate on measurements in lower/warmer regions of the cloud and subcloud region, where it will document cloud condensation nuclei, ice nuclei and drop spectra measurements as well as collect upward-looking radar and lidar data encompassing the zone of Lear-25 operations. The complementary nature of these cooperating platforms will significantly increase the probability of achieving ICE-T scientific goals. The Learjet brings with it state-of-the-art cloud microphysics probes, including a new 3V-CPI instrument that combines the best features of the 2D-S (stereo) and cloud particle imager (CPI). The 3V-CPI is particularly well suited to detection of large (i.e., 50 micron) drops that signify initiation of the warm rain process, as well as detection of first ice, which signifies the initiation of cloud glaciation.The intellectual merit of this effort centers on increased understanding of ice initiation within growing maritime clouds and in turn its impact on precipitation formation, latent heat release and cloud dynamics, particle scavenging and chemical processes, electrical charge separation, water vapor content, and aircraft icing potential. Broader impacts will include interface with faculty and students at the University of Puerto Rico (UPR), where SPEC scientists plan to participate in the mini-conference, and potential interactions with a subset of these students in the field. Analyses supported through ICE-T are ultimately expected to enhance predictive capability of Earth's hydrological and climate systems.