Impact of Cloud Dynamics on Chemical and Electrical Properties of Storms Observed During Deep Convective Clouds and Chemistry (DC3)

深层对流云和化学（DC3）野外活动将于2012年5月至6月进行，是一项多区域、多平台的工作，旨在确定深层中纬度大陆对流云及其内在动力学、微物理和电气化过程对对流层上层成分和化学的影响。该合同将支持俄克拉何马州-德克萨斯州子区域的重点测量，但支持的研究将与其他研究密切协调进行，这些研究主要集中在科罗拉多前沿山脉和美国东南部的深层对流云化学相互作用上，允许在这些不同地区对对流行为和背景化学的对比模式进行表征。对这一特别努力的支持将促进数据收集和分析，重点是移动车载C波段和x波段极化雷达，这些雷达能够在闪电测绘阵列（LMA）观测的背景下表征风暴生命周期，并与用于大气化学测量的DC3飞机（即NSF/NCAR GV高空喷气机和NASA DC-8平台）的飞越协调。这项研究的智力价值集中在全面描述负责水物质和化学成分从边界层快速输送到对流层-平流层界面的对流运动，以及云电气化和随后对大气化学的影响所必需的微物理相互作用。这些测量将在一个容易形成特别长时间和严重的“超级蜂窝”型雷暴的区域内进行。更广泛的影响将通过研究生教育和以媒体为基础的公共和地方学校宣传相结合，并最终通过提高对在存在自然和人为排放的情况下深大气对流对地球大气化学成分的影响的认识而产生。

The Deep Convective Clouds and Chemistry (DC3) field campaign to be conducted May-June 2012 is a multi-regional, multi-platform effort to determine the impact of deep midlatitude continental convective clouds and their intrinsic dynamical, microphysical, and electrification processes upon upper tropospheric composition and chemistry. This award will support focused measurements in the Oklahoma-Texas subregion, but supported research will be conducted in close coordination with other studies focused on deep convective cloud-chemistry interactions along the Front Range of Colorado and in the southeastern U.S., allowing characterization of contrasting modes of convective behavior and background chemistry across these diverse regions. Support of this particular effort will facilitate data collection and analysis emphasizing mobile truck-mounted C- and X-band polarimetric radars capable of characterizing storm lifecycles within the context of lightning mapping array (LMA) observations and in coordination with overflight of DC3 aircraft especially instrumented for atmospheric chemistry measurements, viz. the NSF/NCAR GV high-altitude jet and NASA DC-8 platform.The intellectual merit of this research centers on comprehensive description of convective motions responsible for rapid transport of water substance and chemical constituents from the boundary layer up to the troposphere-stratosphere interface, as well as requisite microphysical interactions pivotal to cloud electrification and ensuing influences upon atmospheric chemistry. These measurements will be conducted within a region prone to development of especially long-lived and severe "supercellular" type thunderstorms. Broader impacts will come through graduate student education and a combination of media-based public and local school outreach, and ultimately through improved knowledge of the influence of deep atmospheric convection on the chemical composition of earth's atmosphere in the presence of natural and anthropogenic emissions.