Environmental Conditions and Characteristics of Ice Supersaturated Regions in Deep Convective Clouds and Chemistry (DC3)

在该项目中，由NSF早期支持开发的最先进的垂直腔面发射激光湿度计（VCSEL）将部署在NSF/NCAR湾流V （GV）研究飞机上，以便在深对流云和化学（DC3）现场活动期间对水蒸气进行高精度和精确的测量。由于其大的水平和垂直范围，GV飞机可以有效地对温带对流层上层和平流层下层进行采样。DC3现场活动将包括在深对流、砧状卷云和非对流卷云等环境中进行广泛采样。此外，将对各种各样的化学和微物理环境进行采样，包括清洁和污染的来源区域。VCSEL湿度计将提供云下尺度的水蒸气的快速测量。这将使我们能够以前所未有的详细程度研究卷云内部和外部的冰过饱和度。围绕冰过饱和区域的环境条件也将在云到天气尺度上进行探索。此外，该项目将继续努力改进对流层上层和平流层下层条件下的水蒸气校准方法。更广泛的影响：该项目将为高中生提供参与的机会，以吸引他们从事科学和工程职业。这项工作将与非营利的青年科学成就者计划（YSAP）合作完成，该计划是一个资助新泽西州/纽约市代表性不足的学生-教师团体进行为期一年的科学项目的组织，并为每个小组配备一名专业导师。研究者、研究生和博士后研究员将作为导师，参加普林斯顿大学一年一度的“科学日”活动，参观实验室，并为教师准备教学材料。

In this project, the state-of-the art Vertical Cavity Surface Emitting Laser (VCSEL) hygrometer, developed through earlier NSF support, will be deployed aboard the NSF/NCAR Gulfstream V (GV) research aircraft to make highly accurate and precise measurements of water vapor during the Deep Convective Clouds and Chemistry (DC3) field campaign. Due to its large horizontal and vertical range, the GV aircraft can efficiently sample the extratropical upper troposphere and lower stratosphere. The DC3 field campaign will include extensive sampling in environments such deep convection, anvil cirrus, and non-convective cirrus. In addition, a wide variety of chemical and microphysical environments will be sampled including clean and polluted source regions. The VCSEL hygrometer will provide fast measurements of water vapor at sub-cloud scales. This will allow for studies of ice supersaturation both inside and outside of cirrus clouds at unprecedented levels of detail. The environmental conditions surrounding ice supersaturated regions will also be explored on a cloud to synoptic scale. Additionally, this project will include continued efforts to improve methods of water vapor calibrations at conditions representative of the upper troposphere and lower stratosphere.Broader Impacts: This project will provide opportunities to involve high school students in order to attract them into science and engineering careers. This will be done in partnership with the non-profit Young Science Achievers Program (YSAP), an organization that funds year-long science projects from underrepresented student-teacher groups in NJ/NYC and pairs each group with a professional mentor. The investigator, graduate students and postdoctoral researchers will act as mentors and participate in an annual "Science Day" at Princeton University, laboratory tours, and the preparation of instructional material for teachers.