| A new method to dynamically simulate groundwater table in land surface model VIC |
| |
| 作者姓名： | YANG Hongwei XIE Zhenghui |
| |
| 作者单位： | LASG, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China,LASG, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China |
| |
| 基金项目： | Supported by the Major State Basic Research Development Program of China (Grant Nos. G1998040905 and 2001CB309404), the National Natural Science Foundation of China (Grant Nos. 40275023 and 40145020), the Hundred Talents Program of the Chinese Academy of Sciences, and the Knowledge Innovation Project of the Institute of Atmospheric Physics of the Chinese Academy of Sciences |
| |
| 摘 要： | Soil moisture plays an important role in water and energy balance in land-atmospheric interaction, but is impacted directly by the groundwater table. Dynamic variation of the groundwater table can be described mathematically by a moving boundary problem. In this paper, the moving boundary problem is reduced to a fixed boundary problem through a coordinate transformation. A new model of groundwater table simulation is developed using the mass-lumped finite element method and is coupled with the land surface model of Variable Infiltration Capacity (VIC). The simulation results show that the new model not only can simulate the groundwater table dynamically, but also can evade the choice of water table depth scale in computation with a low computation cost.
|
| 关 键 词： | land-atmospheric interactions groundwater table VIC model |
A new method to dynamically simulate groundwater table in land surface model VIC |
| |
| YANG Hongwei,XIE Zhenghui.A new method to dynamically simulate groundwater table in land surface model VIC[J].Progress in Natural Science,2003,13(11):819-825. |
| |
| Authors: | Yang Hongwei XIE Zhenghui |
| |
| Affiliation: | LASG, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China |
| |
| Abstract: | Soil moisture plays an important role in water and energy balance in land-atmospheric interaction, but is impacted directly by the groundwater table. Dynamic variation of the groundwater table can be described mathematically by a moving boundary problem. In this paper, the moving boundary problem is reduced to a fixed boundary problem through a coordinate transformation. A new model of groundwater table simulation is developed using the mass-lumped finite element method and is coupled with the land surface model of Variable Infiltration Capacity (VIC). The simulation results show that the new model not only can simulate the groundwater table dynamically, but also can evade the choice of water table depth scale in computation with a low computation cost. |
| |
| Keywords: | land-atmospheric interactions groundwater table VIC model |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《自然科学进展(英文版)》浏览原始摘要信息 |
|
点击此处可从《自然科学进展(英文版)》下载全文 |
