Stem–root flow effect on soil–atmosphere interactions and uncertainty  assessments

Kuo, Tzu-Hsien; Chen, Jen-Ping; Xue, Yongkang

doi:https://doi.org/10.5194/hess-20-1509-2016

Articles | Volume 20, issue 4

https://doi.org/10.5194/hess-20-1509-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/hess-20-1509-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 20, issue 4

Research article

|

20 Apr 2016

Research article |

| 20 Apr 2016

Stem–root flow effect on soil–atmosphere interactions and uncertainty assessments

Tzu-Hsien Kuo, Jen-Ping Chen, and Yongkang Xue

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Short summary

The stem-root flow mechanism was parameterized and incorporated into the Simplified Simple Biosphere model to analyze its impact on soil moisture and land-atmospheric interactions. By testing against the Lien Hua Chih (Taiwan) and HAPEX-Mobilhy (France) measurements, the model shows that stem-root flow reduced the top-soil moisture content and moistened the deeper soil layers. Such soil moisture redistribution results in significant changes in heat flux exchange between land and atmosphere.