NAWDEX

北美维德克斯

• 批准号: 316736766
• 负责人: Professor Dr. George Craig
• 金额: --
• 依托单位: Institut für Physik der Atmosphäre
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/316736766?language=en
• 关键词: NAWDEX

The North Atlantic Waveguide and Downstream Impact Experiment (NAWDEX) aims to provide the foundation for future improvements in the prediction of high impact weather events over Europe. The concept for the field experiment emerged from the WMO THORPEX program and contributes to the World Weather Research Program WWRP in general and to the High Impact Weather (HIWeather) project in particular. An international consortium from the US, UK, France, Switzerland and Germany has applied for funding of a multi-aircraft campaign supported by enhanced surface observations, over the North Atlantic and European region.The importance of accurate weather predictions to society is increasing due to increasing vulnerability to high impact weather events, and increasing economic impacts of weather, for example in renewable energy. At the same time numerical weather prediction has undergone a revolution in recent years, with the widespread use of ensemble predictions that attempt to represent forecast uncertainty. This represents a new scientific challenge because error growth and uncertainty are largest in regions influenced by latent heat release or other diabatic processes. These regions are characterized by small-scale structures that are poorly represented by the operational observing system, but are accessible to modern airborne remote-sensing instruments. HALO will play a central role in NAWDEX due to the unique capabilities provided by its long range and advanced instrumentation. With coordinated flights over a period of days, it will be possible to sample the moist inflow of subtropical air into a cyclone, the ascent and outflow of the warm conveyor belt, and the dynamic and thermodynamic properties of the downstream ridge. NAWDEX will use the proven instrument payload from the NARVAL campaign which combines water vapor lidar and cloud radar, supplemented by dropsondes, to allow these regions to be measured with unprecedented detail and precision. HALO operations will be supported by the DLR Falcon aircraft that will be instrumented with wind lidar systems, providing synergetic measurements of dynamical structures.These measurements will allow the first closely targeted evaluation of the quality of the operational observing and analysis systems in these crucial regions for forecast error growth. They will provide detailed knowledge of the physical processes acting in these regions and especially of the mechanisms responsible for rapid error growth in mid-latitude weather systems. This will provide the foundation for a better representation of uncertainty in numerical weather predictions systems, and better (probabilistic) forecasts.

北大西洋波导和下游影响实验（NAWDEX）旨在为未来改进欧洲高影响天气事件的预​​测奠定基础。现场实验的概念源自 WMO THORPEX 计划，总体上为世界天气研究计划 WWRP，特别是高影响天气 (HIWeather) 项目做出了贡献。来自美国、英国、法国、瑞士和德国的一个国际财团已申请资助在北大西洋和欧洲地区开展由增强型地面观测支持的多机飞行活动。由于对高影响天气事件的脆弱性日益增加，以及天气对可再生能源等经济影响的增加，准确的天气预报对社会的重要性日益增加。与此同时，数值天气预报近年来经历了一场革命，广泛使用试图代表预测不确定性的集合预测。这代表了一个新的科学挑战，因为在受潜热释放或其他非绝热过程影响的区域中，误差增长和不确定性最大。这些区域的特点是规模较小，业务观测系统无法很好地反映这些区域的情况，但现代机载遥感仪器可以访问这些区域。由于其远程和先进仪器提供的独特功能，HALO 将在 NAWDEX 中发挥核心作用。通过几天内的协调飞行，将有可能对亚热带潮湿空气流入气旋、温暖传送带的上升和流出以及下游山脊的动态和热力学特性进行采样。 NAWDEX 将使用 NARVAL 活动中经过验证的仪器有效载荷，该活动结合了水蒸气激光雷达和云雷达，并辅以下投式探空仪，以前所未有的细节和精度测量这些区域。 HALO 操作将得到 DLR Falcon 飞机的支持，该飞机将配备测风激光雷达系统，提供动力结构的协同测量。这些测量将允许对这些关键区域的业务观测和分析系统的质量进行首次有针对性的评估，以预测误差增长。他们将提供有关这些地区物理过程的详细知识，特别是导致中纬度天气系统误差快速增长的机制的详细知识。这将为更好地表示数值天气预报系统中的不确定性和更好的（概率）预报奠定基础。

项目成果

The North Atlantic Waveguide and Downstream Impact Experiment

• DOI: 10.1175/bams-d-17-0003.1
• 发表时间: 2018-08
• 期刊: Bulletin of the American Meteorological Society
• 影响因子: 8
• 作者: A. Schäfler;G. Craig;H. Wernli;P. Arbogast;J. Doyle;R. McTaggart‐Cowan;J. Methven;G. Rivière;F. Ament;M. Boettcher;M. Bramberger;Q. Cazenave;R. Cotton;S. Crewell;J. Delanoë;A. Dörnbrack;A. Ehrlich;Florian Ewald;A. Fix;C. Grams;S. Gray;H. Grob;S. Groß;M. Hagen;B. Harvey;L. Hirsch;M. Jacob;T. Kölling;Heike Konow;C. Lemmerz;O. Lux;L. Magnusson;B. Mayer;M. Mech;R. Moore;J. Pelon;J. Quinting;S. Rahm;M. Rapp;M. Rautenhaus;O. Reitebuch;C. Reynolds;H. Sodemann;T. Spengler;G. Vaughan;M. Wendisch;M. Wirth;B. Witschas;Kevin Wolf;T. Zinner

The Impact of Dropsonde and Extra Radiosonde Observations during NAWDEX in Autumn 2016

2016 年秋季 NAWDEX 期间下投探空仪和额外无线电探空仪观测的影响

• DOI: 10.1175/mwr-d-19-0126.1
• 发表时间: 2016
• 期刊: Monthly Weather Review
• 影响因子: 3.2
• 作者: Schindler;M. Weissmann;A. Schäfler;G. Radnoti
• 通讯作者: G. Radnoti

Observation of Jet Stream Winds during NAWDEX and Characterization of Systematic Meteorological Analysis Errors

NAWDEX 期间急流风的观测和系统气象分析误差的特征

• DOI: 10.1175/mwr-d-19-0229.1
• 发表时间: 2020
• 期刊: Monthly Weather Review
• 影响因子: 3.2
• 作者: Schäfler;B. Harvey;J. Methven;J. D. Doyle;S. Rahm;O. Reitebuch;F. Weiler;B. Witschas
• 通讯作者: B. Witschas