4-D Variational Data Assimilation and Parameter Estimation with the Full Physics NMC Spectral Model

使用完整物理 NMC 谱模型进行 4-D 变分数据同化和参数估计

• 批准号: 9413050
• 负责人: Ionel Navon
• 金额: $ 33.11万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-11-01 至 1998-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413050&HistoricalAwards=false
• 关键词: Variational; Data; Assimilation; Parameter; Estimation

The overall goal of this research is to determine the physically most representative and computationally efficient ways of handling data assimilation in numerical weather forecast models. This award will allow the principal investigator to continue his research into the use of variational methods applied to numerical forecast models. In collaboration with scientists at the National Center for Environmental Prediction (formerly the National Meteorological Center or NMC), he will systematically explore the contribution to the forecast improvement and computational costs of including various physical processes. A second research topic involves the use of parameter estimation using adjoint methods as another means of improving forecasts. In this case, the PI will explore model sensitivity to seasonal and geographical as well as meteorological parameters. The principal investigator's work has contributed and will likely continue to contribute to improvements in operational weather forecasting while advancing fundamental knowledge of numerical techniques. ***

本研究的总体目标是确定在数值天气预报模式中处理数据同化的物理上最具代表性和计算效率的方法。该奖项将允许首席研究员继续他的研究，将变分方法应用于数值预测模型。他将与国家环境预测中心（原国家气象中心或NMC）的科学家合作，系统地探索包括各种物理过程对预测改进的贡献和计算成本。第二个研究课题涉及使用伴随方法的参数估计作为改进预测的另一种手段。在这种情况下，PI将探索模式对季节和地理以及气象参数的敏感性。首席研究员的工作已经并可能继续为改进业务天气预报做出贡献，同时推进数值技术的基础知识。＊＊＊