...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Hydrology and Earth System Sciences >Using satellite-based evapotranspiration estimates to improve the structure of a simple conceptual rainfall–runoff model
【24h】

Using satellite-based evapotranspiration estimates to improve the structure of a simple conceptual rainfall–runoff model

机译：使用基于卫星的蒸散量估算来改善简单的概念性降雨径流模型的结构

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Daily, quasi-global (50°?N–S and 180°?W–E), satellite-based estimates of actual evapotranspiration at 0.25° spatial resolution have recently become available, generated by the Global Land Evaporation Amsterdam Model?(GLEAM). We investigate the use of these data to improve the performance of a simple lumped catchment-scale hydrologic model driven by satellite-based precipitation estimates to generate streamflow simulations for a poorly gauged basin in Africa. In one approach, we use GLEAM to constrain the evapotranspiration estimates generated by the model, thereby modifying daily water balance and improving model performance. In an alternative approach, we instead change the structure of the model to improve its ability to simulate actual evapotranspiration (as estimated by GLEAM). Finally, we test whether the GLEAM product is able to further improve the performance of the structurally modified model. Results indicate that while both approaches can provide improved simulations of streamflow, the second approach also improves the simulation of actual evapotranspiration significantly, which substantiates the importance of making qdiagnostic structural improvements/q to hydrologic models whenever possible.
机译：由全球陆地蒸发阿姆斯特丹模型（GLEAM）生成的每日准全球（50°N＆S和180°W＆E），基于卫星的实际蒸散量估计值最近已可用。 。我们调查了这些数据的使用，以改善由基于卫星的降水估计驱动的简单集总集水规模水文模型的性能，从而为非洲欠佳计量盆地生成水流模拟。在一种方法中，我们使用GLEAM约束模型生成的蒸散量估算值，从而修改日常水平衡并改善模型性能。在另一种方法中，我们改为更改模型的结构，以提高其模拟实际蒸散量的能力（由GLEAM估算）。最后，我们测试GLEAM产品是否能够进一步改善结构修改模型的性能。结果表明，虽然这两种方法都可以提供改进的水流模拟，但是第二种方法也可以显着改善实际蒸散量的模拟，这证明了尽可能对水文模型进行诊断结构改进的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号