TR32-Database: Database of Transregio 32

[748] - The Simulation of the Opposing Fluxes of Latent Heat and CO2 over Various Land-Use Types: Coupling a Gas Exchange Model to a Mesoscale Atmospheric Model

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Features
Citation
Reyers, M., Krüger, A., Werner, C., Zacharias, S., Kerschgens, M., 2010. The Simulation of the Opposing Fluxes of Latent Heat and CO2 over Various Land-Use Types: Coupling a Gas Exchange Model to a Mesoscale Atmospheric Model. Boundary-Layer Meteorology, 139, 121 - 141. DOI: 10.1007/s10546-010-9574-0.
Identification
Title(s):Main Title: The Simulation of the Opposing Fluxes of Latent Heat and CO2 over Various Land-Use Types: Coupling a Gas Exchange Model to a Mesoscale Atmospheric Model
Description(s):Abstract: Amesoscalemeteorological model (FOOT3DK) is coupled with a gas exchange model to simulate surface fluxes of CO2 and H2O under field conditions. The gas exchange model consists of a C3 single leaf photosynthesis sub-model and an extended big leaf (sun/shade) sub-model that divides the canopy into sunlit and shaded fractions. Simulated CO2 fluxes of the stand-alone version of the gas exchange model correspond well to eddycovariance measurements at a test site in a rural area in the west of Germany. The coupled FOOT3DK/gas exchange model is validated for the diurnal cycle at singular grid points, and delivers realistic fluxes with respect to their order of magnitude and to the general daily course. Compared to the Jarvis-based big leaf scheme, simulations of latent heat fluxes with a photosynthesis-based scheme for stomatal conductance are more realistic. As expected, flux averages are strongly influenced by the underlying land cover. While the simulated net ecosystem exchange is highly correlated with leaf area index, this correlation ismuch weaker for the latent heat flux. Photosynthetic CO2 uptake is associated with transpirational water loss via the stomata, and the resulting opposing surface fluxes of CO2 and H2O are reproduced with the model approach. Over vegetated surfaces it is shown that the coupling of a photosynthesis-based gas exchange model with the land-surface scheme of a mesoscale model results in more realistic simulated latent heat fluxes.
Identifier(s):DOI: 10.1007/s10546-010-9574-0
Responsible Party
Creator(s):Author: Mark Reyers
Author: Andreas Krüger
Author: Christiane Werner
Author: Stefan Zacharias
Author: Michael Kerschgens
Publisher:Springer
Topic
TR32 Topic:Atmosphere
Subject(s):CRC/TR32 Keywords: C3 Single Leaf Photosynthesis, Latent Heat Flux, NEE, Stomatal Conductance, Sun-Shade
File Details
File Name:2010_Reyers_BLM.pdf
Data Type:Text
Size(s):21 Pages
File Size:967 kB (0.944 MB)
Date(s):Date Accepted: 2010-10-07
Issued: 2010-10-28
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:50.8726785
East:6.4585526
South:50.8618447
West:6.4413864
Measurement Region:Ellebach
Measurement Location:Selhausen
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2010
Type:Article
Article Type:Journal
Source:Boundary-Layer Meteorology
Volume:139
Number Of Pages:21
Page Range:121 - 141
Metadata Details
Metadata Creator:Mark Reyers
Metadata Created:2013-12-03
Metadata Last Updated:2013-12-03
Subproject:D1
Funding Phase:1
Metadata Language:English
Metadata Version:V40
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Page Visits:92
Metadata Downloads:0
Dataset Downloads:0
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