• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Random-Walk Models for Simulating Water Vapor Exchange within and Above a SoybeanCanopy
【24h】

Random-Walk Models for Simulating Water Vapor Exchange within and Above a SoybeanCanopy

机译：模拟大豆冠层内外水汽交换的随机游走模型

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

摘要

The turbulent exchange of mass between a plant canopy and the atmosphere can bemodelled with either Eulerian or Lagrangian models. The application of Eulerian models for estimating turbulent transfer within and above plant canopies has been criticized because of an inability to treat the dispersion of material from nearby sources well. Lagrangian models do not suffer from this deficiency as they consider the diffusion of material from both nearby and far away sources explicitly. The authors developed three Lagrangian random walk models for computing the exchange of water vapor and water vapor mixing ratio profiles above and within a plant canopy. The movement of fluid parcels was computed using algorithms presented by Legg and Raupach (1982), Wilson et al. (1983) and Thomson (1984). The source strength of water vapor at discrete layers in the canopy was parameterized from estimates of net radiation flux density. The models were tested against measurement made within and above a soybean canopy.

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