Collaborative Research: Radar Observations of Convective Lifecycle near Argentina's Sierras de Cordoba

合作研究：阿根廷科尔多瓦山脉附近对流生命周期的雷达观测

• 批准号: 1661657
• 负责人: Kristen Rasmussen
• 金额: $ 38.28万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1661657&HistoricalAwards=false
• 关键词: Collaborative; Research; Radar; Observations; Convective

Arguably the most intense storms in the world occur in mountainous west central Argentina. Our current knowledge of the storms in this region largely comes from weather satellites, which provide valuable snapshots but lack spatial and temporal details needed to fully understand and predict their formation. The RELAMPAGO (Remote sensing of Electrification, Lightning, and Mesoscale/microscale Processes with Adaptive Ground Observations) project seeks to understand how these intense storms initiate, grow, and produce severe weather in the vicinity of the Sierras de Cordoba. By using state-of-the-art ground-based instruments, detailed observations of these storms throughout their lifecycle, and the environment in which they form, will allow for a comparison with severe storms over the U.S. to help understand and improve prediction of intense convection in Argentina and around the world. This project, involving researchers at the University of Washington and Colorado State University, includes participation in the field phase of RELAMPAGO occurring 1 November - 15 December 2018 near Cordoba, Argentina to study which factors lead to intense upward motion in the storms, how these storms rapidly grow upscale near the mountains, and how these processes and environmental conditions compare to other mountainous regions of the world with intense, severe storms. To achieve this goal, a network of fixed and mobile research weather radars, atmospheric soundings, lightning arrays, and satellites will provide the necessary measurements for addressing these science objectives. These research activities will also foster international collaborations and provide the opportunity to reach out to the public, both locally and abroad, to highlight the goals of this project, promote science, and serve as role models for future generations of atmospheric scientists. Satellite studies have highlighted focused initiation and upscale growth of intense convective systems near the Sierras de Cordoba (SDC) in Argentina. The RELAMPAGO (Remote sensing of Electrification, Lightning, and Mesoscale/microscale Processes with Adaptive Ground Observations) field campaign aims to understand the processes responsible for this convective lifecycle and associated severe weather by leveraging the recurring focused topographic initiation of this region. The research will use the RELAMPAGO radar network, including the NSF-supported, dual-polarization, Doppler, dual-wavelength S-PolKa radar, to document the full lifecycle of these intense storms and, with coincident RELAMPAGO environmental observations, determine the relative roles of steep terrain and localized and large-scale atmospheric flow patterns in the rapid upscale growth and maintenance of these systems near the SDC. Results from this research will provide the first continuous view of the storm lifecycle and will provide a means to compare with deep storms in other mountainous regions to develop conceptual models for improving global prediction of these hazardous events. This project is co-funded by the NSF Office of International Science and Engineering.

可以说，世界上最强烈的风暴发生在阿根廷中西部山区。我们目前对该地区风暴的了解主要来自气象卫星，它们提供了有价值的快照，但缺乏充分理解和预测风暴形成所需的空间和时间细节。 RELAMPAGO（通过自适应地面观测对电气化、闪电和中尺度/微尺度过程进行遥感）项目旨在了解这些强烈风暴如何在科尔多瓦山脉附近引发、发展和产生恶劣天气。通过使用最先进的地面仪器，对这些风暴整个生命周期以及它们形成的环境进行详细观察，将能够与美国上空的严重风暴进行比较，以帮助了解和改进对强烈风暴的预测。阿根廷和世界各地的对流。该项目由华盛顿大学和科罗拉多州立大学的研究人员参与，包括参与 2018 年 11 月 1 日至 12 月 15 日在阿根廷科尔多瓦附近发生的 RELAMPAGO 现场阶段，以研究哪些因素导致风暴强烈向上运动，这些风暴如何产生山区附近迅速发展为高档地区，以及这些过程和环境条件与世界上其他遭受强烈风暴的山区相比如何。为了实现这一目标，由固定和移动研究天气雷达、大气探测、闪电阵列和卫星组成的网络将为实现这些科学目标提供必要的测量。这些研究活动还将促进国际合作，并提供接触国内外公众的机会，以突出该项目的目标，促进科学发展，并为未来几代大气科学家树立榜样。 卫星研究强调了阿根廷科尔多瓦山脉（SDC）附近强对流系统的集中启动和大规模增长。 RELAMPAGO（通过自适应地面观测对电气化、闪电和中尺度/微尺度过程进行遥感）实地活动旨在通过利用该地区反复出现的集中地形启动来了解导致该对流生命周期和相关恶劣天气的过程。该研究将使用 RELAMPAGO 雷达网络，包括 NSF 支持的双极化、多普勒、双波长 S-PolKa 雷达，记录这些强烈风暴的整个生命周期，并通过一致的 RELAMPAGO 环境观测，确定相对作用SDC 附近这些系统的快速高档增长和维护过程中，陡峭的地形以及局部和大规模的大气流动模式的影响。这项研究的结果将提供风暴生命周期的第一个连续视图，并将提供一种与其他山区的深层风暴进行比较的方法，以开发概念模型来改进对这些危险事件的全球预测。该项目由美国国家科学基金会国际科学与工程办公室共同资助。

项目成果

New Insights into the South American Low-Level Jet from RELAMPAGO Observations

RELAMPAGO 观测对南美低空急流的新见解

• DOI: 10.1175/mwr-d-21-0161.1
• 发表时间: 2022-02-18
• 期刊: Monthly Weather Review
• 影响因子: 3.2
• 作者: C. Sasaki;A. Rowe;L. McMurdie;K. Rasmussen
• 通讯作者: K. Rasmussen

A Synoptic Evolution Comparison of the Smallest and Largest MCSs in Subtropical South America between Spring and Summer

南美洲副热带地区春季和夏季最小和最大MCS的天气演化比较

• 发表时间: 2021-06
• 期刊: Monthly weather review
• 影响因子: 3.2
• 作者: Piersante, Jeremiah O.;Rasmussen, Kristen L.;Schumacher, Russ S.;Rowe, Angela K.;McMurdie, Lynn A.
• 通讯作者: McMurdie, Lynn A.

Leveraging Field-Campaign Networks to Identify Sexual Harassment in Atmospheric Science and Pilot Promising Interventions

利用实地活动网络识别大气科学中的性骚扰并试点有希望的干预措施

• DOI: 10.1175/bams-d-19-0341.1
• 发表时间: 2021-06
• 期刊: Bulletin of the American Meteorological Society
• 影响因子: 8
• 作者: Fischer, Emily V.;Bloodhart, Brittany;Rasmussen, Kristen;Pollack, Ilana B.;Hastings, Meredith G.;Marin;Desai, Ankur R.;Schwarz, Joshua P.;Nesbitt, Stephen;Hence, Deanna
• 通讯作者: Hence, Deanna

Enlightenment strikes! Broadening graduate school training through field campaign participation

启蒙来袭！

• DOI: 10.1175/bams-d-20-0062.1
• 发表时间: 2021-06
• 期刊: Bulletin of the American Meteorological Society
• 影响因子: 8
• 作者: Rasmussen, Kristen L.;Burt, Melissa A.;Rowe, Angela;Haacker, Rebecca;Hence, Deanna;Medina Luna, Lorena;Nesbitt, Stephen W.;Maertens, Julie
• 通讯作者: Maertens, Julie

Comparison of Biases in Warm-Season WRF Forecasts in North and South America

北美和南美暖季 WRF 预报偏差比较

• DOI: 10.1175/waf-d-20-0062.1
• 发表时间: 2021-05-03
• 期刊: Weather and Forecasting
• 影响因子: 2.9
• 作者: Jeremiah O. Piersante;R. Schumacher;K. Rasmussen
• 通讯作者: K. Rasmussen