Value of Groundwater Data in the Assimilation of the Groundwater-Soil-Land-Surface Nexus

地下水数据在地下水-土壤-土地-地表关系同化中的价值

• 批准号: 246189367
• 负责人: Professor Dr.-Ing. Olaf A. Cirpka
• 金额: --
• 依托单位: Arbeitsgruppe Hydrogeologie
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/246189367?language=en
• 关键词: Value; Groundwater; Data; Assimilation; Soil

The project investigates (a) whether and how groundwater observations and the estimation of aquifer properties improve the overall state estimation and prediction by data assimilation in coupled atmosphere-surface-subsurface systems, and (b) whether and how updating states and properties of neighbouring compartments improves the state estimation of the groundwater compartment. We expect added value by a consistent treatment of fluxes across aquifer boundaries in all neighbouring compartments within a coupled modeling framework. However, incorporating neighbouring compartments increases computational efforts, and adds conceptual and parametric uncertainty besides mismatching spatial and temporal scales between the compartments. The project will develop the best strategy for updating groundwater states and parameters both in a weakly and strongly coupled data assimilation framework based on TerrSysMP-PDAF.

该项目调查（a）地下水观测和含水层特性估计是否以及如何通过大气-地表-地下耦合系统中的数据同化改进总体状态估计和预测，以及（B）更新相邻隔室的状态和特性是否以及如何改进地下水隔室的状态估计。我们期望通过在耦合建模框架内对所有相邻隔室中含水层边界的通量进行一致处理来增加价值。然而，将相邻的车厢增加计算工作量，并增加概念和参数的不确定性，除了车厢之间的不匹配的空间和时间尺度。该项目将制定最佳战略，更新地下水状态和参数都在一个弱耦合和强耦合的数据同化框架的基础上TerrSysMP-PDAF。