Fine-scale Description of Shallow Atmospheric Boundaries during International Water Vapor Project (IHOP)

国际水汽项目 (IHOP) 期间浅层大气边界的精细描述

• 批准号: 0129374
• 负责人: Bart Geerts
• 金额: $ 29.21万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0129374&HistoricalAwards=false
• 关键词: Fine; scale; Description; Shallow; Atmospheric

The International Water Vapor (H2O) Project (IHOP) is a large multi-agency, multi-investigator project that focuses on the measurement of water vapor and water vapor variability. The goal of the project is to improve understanding of convective initiation and to increase short-term precipitation forecast skills. The researcher will employ the Wyoming Cloud Radar system (WCR), in situ data from the University of Wyoming King Air research aircraft (UWYKA), and ancillary IHOP data to describe in unprecedented detail, the vertical structure and evolution of radar "fine-lines", such as outflow boundaries and drylines, and to interpret their ability to trigger deep convection. The UWYKA is equipped with an array of atmospheric sensors to measure temperature, humidity, winds, and their fluxes, as well as cloud and radiation probes. The combination of UWYKA and WCR data along stepped traverses will allow (a) a description of the kinematic and thermodynamic vertical structure of shallow convergence zones; and (b) an estimation of the variation of the boundary layer precipitable water, convection parameters, and moisture convergence across fine-lines.The key hypotheses to be tested are:1. The WCR data are sufficiently sensitive and detailed to describe various details of boundary layer structures2. The WCR data allow a detailed and accurate description of the airflow in vertical sections across radar-detected fine-lines3. Analysis of combined WCR, UWYKA, and ancillary IHOP data, in particular DIAL water vapor profiles will show that the variability of precipitable water in a 'well-mixed' convective boundary layer is significant.

国际水蒸气（H2O）项目（IHOP）是一个大型的多机构，多研究者项目，重点是水蒸气和水蒸气变化的测量。 该项目的目标是提高对对流发生的认识，并提高短期降水预报技能。 研究人员将采用怀俄明州云雷达系统（WCR），现场数据从怀俄明州国王航空研究飞机（UWYKA）的大学，和辅助IHOP数据描述前所未有的详细，垂直结构和雷达“细线”的演变，如流出边界和干线，并解释其触发深对流的能力。 UWYKA配备了一系列大气传感器，用于测量温度，湿度，风及其通量，以及云和辐射探测器。 结合UWYKA和WCR资料，沿沿着阶梯式导线将允许（a）的运动学和热力学的浅层辐合区的垂直结构的描述;和（B）的变化的边界层可降水量，对流参数和水汽辐合跨越细线的估计。WCR数据足够敏感和详细，可以描述边界层结构的各种细节2。WCR数据可以详细准确地描述雷达探测到的细线3上垂直截面的气流。结合WCR，UWYKA，和辅助IHOP数据，特别是DIAL水汽廓线的分析将表明，在一个“充分混合”对流边界层的可降水量的变化是显着的。