Upgrading the coupled vegetation boundary layer model HIRVAC by new soil water and interception modules

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Anne Barbara Baums - , TUD Dresden University of Technology (Author)
  • Valeri Goldberg - , TUD Dresden University of Technology (Author)
  • Christian Bernhofer - , TUD Dresden University of Technology (Author)

Abstract

The coupled atmospheric boundary layer model HIRVAC (High Resolution Vegetation Atmosphere Coupler) combines a 1.5 dimensional planetary boundary layer model (developed at the Humboldt University Berlin) and the mechanistic photosynthesis module PSN6 (University of Bayreuth) as well as a soil water module. This multi layer model includes a vertically structured vegetation and covers a range from 0-2 km height. The model layers are coupled via the turbulent exchange using a K-approach. Recent work aimed to include several new modules to enable model calculations for realistic conditions. Therefore rainfall and a multi layer interception and a soil water module were included. Further the light extinction through the canopy was upgraded by including sunfleck dynamics for calculating a more realistic radiation distribution within and below canopy. The upgraded model version was run for the Anchor Station in Tharandt where various measurements for comparison with model results are available. The obtained results demonstrate that periods of several days can be modelled successfully. A good model performance was found for both, soil water and interception. The modelled energy fluxes finally confirm the reliability of the overall model performance.

Details

Original languageEnglish
Pages (from-to)211-218
Number of pages8
JournalMeteorologische Zeitschrift
Volume14
Issue number2
Publication statusPublished - Apr 2005
Peer-reviewedYes
Externally publishedYes

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