An Observational Study of the Kinematic and Microphysical Control of Lightning Properties over Alabama During Deep Convective Clouds and Chemistry (DC3)

深对流云和化学过程中阿拉巴马州闪电特性的运动学和微物理控制的观测研究 (DC3)

• 批准号: 1063573
• 负责人: Lawrence Carey
• 金额: $ 38.97万
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1063573&HistoricalAwards=false
• 关键词: Observational; Study; Kinematic; Microphysical; Control

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, physical, and electrification processes upon upper tropospheric composition and chemistry. This award will support focused measurements in the Southeastern U.S., but this research will be conducted in close coordination with other studies focused on deep convective cloud-chemistry interactions along the Front Range of Colorado and across the Southern Plains region of Oklahoma and Texas, allowing characterization of contrasting modes of convective behavior and background chemistry across these diverse regions. Support of this particular effort will facilitate collection and analysis of data including: ground-based polarimetric Doppler radar observations, mobile soundings, and total lightning mapping array observations centered on northern Alabama. These observations will be performed in coordination with overflight of aircraft especially instrumented for DC3 including the NSF/NCAR GV high-altitude jet and NASA DC-8 aircraft.The intellectual merit of this research rests 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 key cloud electrification and subsequent production of nitrogen oxides. 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.

将于 2012 年 5 月至 6 月进行的深对流云和化学 (DC3) 实地活动是一项多区域、多平台的工作，旨在确定深中纬度大陆对流云及其内在动力、物理和电气化过程对上层对流层成分和化学的影响。 该奖项将支持美国东南部的重点测量，但这项研究将与其他专注于科罗拉多州前山脉以及俄克拉荷马州和德克萨斯州南部平原地区的深对流云化学相互作用的研究密切协调进行，从而能够表征这些不同地区的对流行为和背景化学的对比模式。 对这项特别工作的支持将促进数据的收集和分析，包括：地面偏振多普勒雷达观测、移动探测以及以阿拉巴马州北部为中心的总闪电测绘阵列观测。 这些观测将与专门用于 DC3 的飞机飞越协调进行，包括 NSF/NCAR GV 高空喷气式飞机和 NASA DC-8 飞机。这项研究的智力价值在于全面描述对流运动，该对流运动负责将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，以及必要的微物理相互作用 关键云电气化和随后产生的氮氧化物。 更广泛的影响将通过研究生教育以及基于媒体的公立和当地学校宣传相结合，并最终通过提高对自然和人为排放存在下的深层大气对流对地球大气化学成分的影响的了解来实现。

项目成果

Radar Reflectivity and Altitude Distributions of Lightning Flashes as a Function of Three Main Storm Types

雷达反射率和闪电高度分布与三种主要风暴类型的关系

• DOI: 10.1029/2018jd029238
• 发表时间: 2018
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: Mecikalski, Retha M.;Carey, Lawrence D.
• 通讯作者: Carey, Lawrence D.

Lightning characteristics relative to radar, altitude and temperature for a multicell, MCS and supercell over northern Alabama

• DOI: 10.1016/j.atmosres.2017.03.001
• 发表时间: 2017-01
• 期刊: Atmospheric Research
• 影响因子: 5.5
• 作者: R. Mecikalski;L. Carey

Radar Reflectivity and Altitude Distributions of Lightning as a Function of IC, CG, and HY Flashes: Implications for LNOx Production

• DOI: 10.1029/2018jd029263
• 发表时间: 2018-11
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: R. Mecikalski;L. Carey