Collaborative Research: Studies of the Microphysical Processes in Ice and Mixed-Phase Clouds and Precipitation Using Multiparameter Radar Observations Combined with Cloud Modeling

合作研究：利用多参数雷达观测结合云模拟研究冰、混相云和降水的微物理过程

• 批准号: 1841246
• 负责人: Alexander Ryzhkov
• 金额: $ 21.46万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-04-01 至 2023-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1841246&HistoricalAwards=false
• 关键词: Collaborative; Research; Studies; Microphysical; Processes

Winter storms cause major disruptions to transportation, commerce, the power grid and public safety. The goal of this research project is to provide better information on the properties of clouds and precipitation during winter storms so that these events can be better forecast. The researchers will use advanced radar observations, and techniques to analyze that data, to study a variety of processes in winter storms that affect the types and amount of precipitation that falls at the surface. Better predictions of snowstorms are especially important for ground and air travel and this work has connections to the relevant operational forecast agencies. In addition, students will be trained in radar meteorology techniques, ensuring the advancement of the next generation of scientists.The research team will investigate the microphysics of cold-season storms, with a focus on the use of multi-frequency, dual-polarimetric radar observations. A unique combination of state-of-the-art tools in modern weather radar technology and explicit microphysical modeling will be used to derive a better understanding of the microphysics in winter storms, including dendritic growth, riming, aggregation aloft, and processes in the melting layer. The main observational tools will be the radar facilities at Stony Brook University, which are highlighted by the Ka-band scanning radar and W- and Ku-band profiling radars. Ground measurements will include the Multi-Angle Snowflake Camera (MASC), disdrometers, and Community Collaborative Rail, Hail and Snow Network (CoCoRaHS) observations. The main objectives of the work are to: 1) Explore synergy among polarimetric, multi-frequency, and Doppler radar measurements using innovative techniques for processing and representing multi-parameter radar data to provide information about microphysical and kinematic processes in ice and mixed-phase clouds, 2) Investigate novel radar methods for quantification of ice hydrometers, and 3) Develop a 1D cloud spectral bin model combined with a forward radar operator to simulate key microphysical processes of snow formation and provide recommendations for improving the parameterization these processes in large bulk and spectral bin models.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

冬季风暴对交通、商业、电网和公共安全造成重大破坏。 该研究项目的目标是提供有关冬季风暴期间云和降水特性的更好信息，以便更好地预报这些事件。 研究人员将使用先进的雷达观测和技术来分析这些数据，以研究冬季风暴中影响地表降水类型和数量的各种过程。 更好地预测暴风雪对于地面和空中旅行尤其重要，这项工作与相关业务预报机构有联系。 此外，学生还将接受雷达气象技术方面的培训，确保下一代科学家的进步。研究小组将研究冷季风暴的微观物理，重点是多频、双极化雷达的使用观察。 现代天气雷达技术中最先进的工具和明确的微物理建模的独特组合将用于更好地了解冬季风暴中的微物理，包括树突生长、雾化、高空聚集和融化过程层。 主要观测工具将是石溪大学的雷达设施，其中以Ka波段扫描雷达以及W和Ku波段剖面雷达为重点。 地面测量将包括多角度雪花相机 (MASC)、测距仪和社区协作铁路、冰雹和雪网络 (CoCoRaHS) 观测。 这项工作的主要目标是： 1) 使用创新技术处理和表示多参数雷达数据，探索极化、多频和多普勒雷达测量之间的协同作用，以提供有关冰和混合相中的微物理和运动过程的信息云，2) 研究用于量化冰比重计的新颖雷达方法，以及 3) 开发与前向雷达算子相结合的一维云谱箱模型，以模拟雪形成的关键微物理过程，并提供改进建议在大块和光谱箱模型中参数化这些过程。该奖项反映了 NSF 的法定使命，并且通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Polarimetric Relations for Snow Estimation—Radar Verification

雪估计的偏振关系 - 雷达验证

• DOI: 10.1175/jamc-d-19-0140.1
• 发表时间: 2020-05
• 期刊: Journal of Applied Meteorology and Climatology
• 影响因子: 3
• 作者: Bukovčić, Petar;Ryzhkov, Alexander;Zrnić, Dusan
• 通讯作者: Zrnić, Dusan

Precipitation Growth Processes in the Comma-Head Region of the 7 February 2020 Northeast Snowstorm: Results from IMPACTS

2020 年 2 月 7 日东北暴风雪逗号头区域的降水增长过程：来自 IMPACTS 的结果

• DOI: 10.1175/jas-d-22-0118.1
• 发表时间: 2023-01
• 期刊: Journal of the Atmospheric Sciences
• 影响因子: 3.1
• 作者: Varcie, Megan M.;Zaremba, Troy J.;Rauber, Robert M.;McFarquhar, Greg M.;Finlon, Joseph A.;McMurdie, Lynn A.;Ryzhkov, Alexander;Schnaiter, Martin;Järvinen, Emma;Waitz, Fritz;et al
• 通讯作者: et al

A Polarimetric Radar Analysis of Ice Microphysical Processes in Melting Layers of Winter Storms Using S-Band Quasi-Vertical Profiles

利用 S 波段准垂直剖面对冬季风暴融化层中的冰微物理过程进行偏振雷达分析

• DOI: 10.1175/jamc-d-19-0128.1
• 发表时间: 2020-04
• 期刊: Journal of Applied Meteorology and Climatology
• 影响因子: 3
• 作者: Griffin, Erica M.;Schuur, Terry J.;Ryzhkov, Alexander V.
• 通讯作者: Ryzhkov, Alexander V.

Polarimetric Observations and Simulations of Sublimating Snow: Implications for Nowcasting

升华雪的偏振观测和模拟：对临近预报的影响

• DOI: 10.1175/jamc-d-21-0038.1
• 发表时间: 2021-07
• 期刊: Journal of Applied Meteorology and Climatology
• 影响因子: 3
• 作者: Carlin, Jacob T.;Reeves, Heather D.;Ryzhkov, Alexander V.
• 通讯作者: Ryzhkov, Alexander V.

Polarimetric Radar Relations for Estimation of Visibility in Aggregated Snow

用于估算聚集雪中能见度的偏振雷达关系

• DOI: 10.1175/jtech-d-20-0088.1
• 发表时间: 2021-04
• 期刊: Journal of Atmospheric and Oceanic Technology
• 影响因子: 2.2
• 作者: Bukovčić, Petar;Ryzhkov, Alexander V.;Carlin, Jacob T.
• 通讯作者: Carlin, Jacob T.