Evaluating the influence of plant-specific physiological parameterizations on the partitioning of land surface energy fluxes

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Title:Main Title: Evaluating the influence of plant-specific physiological parameterizations on the partitioning of land surface energy fluxes
Description:Abstract: Plant physiological properties have a significant influence on the partitioning of radiative forcing, the spatial and temporal variability of soil water and soil temperature dynamics, and the rate of carbon fixation. Because of the direct impact on latent heat fluxes, these properties may also influence weather generating processes, such as the evolution of the atmospheric boundary. In this work, crop-specific physiological characteristics, retrieved from detailed field measurements, are included in the biophysical parameterization of the Terrestrial Systems Modeling Platform (TerrSysMP). The measured set of parameters for two typical European mid-latitudinal crops (sugar beet and winter wheat) is validated using eddy covariance measurements over multiple years from three measurement sites located in the North Rhine-Westphalia region, Germany. Comparison with observations and a simulation utilizing the generic crop type shows clear improvements when using the crop-specific physiological characteristics of the plant. In particular, the increase of latent heat fluxes in conjunction with decreased sensible heat fluxes as simulated by the two crops leads to an improved quantification of the diurnal energy partitioning. An i independent analysis carried out using estimates of gross primary production reveals that the better agreement between observed and simulated latent heat adopting the plant-specific physiological properties largely stems from an improved simulation of the photosynthesis process. Finally, to evaluate the effects of the crop-specific parameterizations on the atmospheric boundary layer dynamics, we perform a series of semi-idealized land-atmosphere coupled simulations by hypothesizing three cropland configurations. The use of a mixing-diagram approach highlights the different heat and moisture budgets of the atmospheric boundary layer when using the crop-specific physiological properties.
Identifier:10.1175/JHM-D-14-0153.1 (DOI)
Responsible Party
Creators:Mauro Sulis (Author), Matthias Langensiepen (Author), Prabhakar Shrestha (Author), Anke Schickling (Author), Clemens Simmer (Author), Stefan Kollet (Author)
Publisher:American Meteorological Society
Publication Year:2014
Topic
TR32 Topic:Vegetation
Related Subproject:Z4
Subject:Keyword: Energy Balance
Geogr. Information Topic:Climatology/Meteorology/Atmosphere
File Details
Filename:Sulis_2015_JHM.pdf
Data Type:Text - Article
File Size:1.6 MB
Date:Submitted: 15.08.2014
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Free
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:[TR32DB] Data policy agreement
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Specific Information - Publication
Publication Status:Published
Review Status:Peer reviewed
Publication Type:Article
Article Type:Journal
Source:Journal of Hydrometeorology
Issue:2
Volume:16
Number of Pages:17 (517 - 533)
Metadata Details
Metadata Creator:Mauro Sulis
Metadata Created:18.09.2014
Metadata Last Updated:18.09.2014
Subproject:Z4
Funding Phase:2
Metadata Language:English
Metadata Version:V50
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