Evaluating the performance of land surface model ORCHIDEE-CAN v1.0 on water and energy flux estimation with a single- and multi-layer energy budget scheme

Show full item record



Permalink

http://hdl.handle.net/10138/167763

Citation

Chen , Y , Ryder , J , Bastrikov , V , McGrath , M J , Naudts , K , Otto , J , Ottle , C , Peylin , P , Polcher , J , Valade , A , Black , A , Elbers , J A , Moors , E , Foken , T , van Gorsel , E , Haverd , V , Heinesch , B , Tiedemann , F , Knohl , A , Launiainen , S , Loustau , D , Ogee , J , Vesala , T & Luyssaert , S 2016 , ' Evaluating the performance of land surface model ORCHIDEE-CAN v1.0 on water and energy flux estimation with a single- and multi-layer energy budget scheme ' , Geoscientific Model Development , vol. 9 , no. 9 , pp. 2951-2972 . https://doi.org/10.5194/gmd-9-2951-2016

Title: Evaluating the performance of land surface model ORCHIDEE-CAN v1.0 on water and energy flux estimation with a single- and multi-layer energy budget scheme
Author: Chen, Yiying; Ryder, James; Bastrikov, Vladislav; McGrath, Matthew J.; Naudts, Kim; Otto, Juliane; Ottle, Catherine; Peylin, Philippe; Polcher, Jan; Valade, Aude; Black, Andrew; Elbers, Jan A.; Moors, Eddy; Foken, Thomas; van Gorsel, Eva; Haverd, Vanessa; Heinesch, Bernard; Tiedemann, Frank; Knohl, Alexander; Launiainen, Samuli; Loustau, Denis; Ogee, Jerome; Vesala, Timo; Luyssaert, Sebastiaan
Contributor: University of Helsinki, Department of Physics
Date: 2016-09-02
Language: eng
Number of pages: 22
Belongs to series: Geoscientific Model Development
ISSN: 1991-959X
URI: http://hdl.handle.net/10138/167763
Abstract: Canopy structure is one of the most important vegetation characteristics for land-atmosphere interactions, as it determines the energy and scalar exchanges between the land surface and the overlying air mass. In this study we evaluated the performance of a newly developed multilayer energy budget in the ORCHIDEE-CAN v1.0 land surface model (Organising Carbon and Hydrology In Dynamic Ecosystems - CANopy), which simulates canopy structure and can be coupled to an atmospheric model using an implicit coupling procedure. We aim to provide a set of accept-able parameter values for a range of forest types. Top-canopy and sub-canopy flux observations from eight sites were collected in order to conduct this evaluation. The sites crossed climate zones from temperate to boreal and the vegetation types included deciduous, evergreen broad-leaved and evergreen needle-leaved forest with a maximum leaf area index (LAI; all-sided) ranging from 3.5 to 7.0. The parametrization approach proposed in this study was based on three selected physical processes - namely the diffusion, advection, and turbulent mixing within the canopy. Short-term sub-canopy observations and long-term surface fluxes were used to calibrate the parameters in the sub-canopy radiation, turbulence, and resistance modules with an automatic tuning process. The multi-layer model was found to capture the dynamics of sub-canopy turbulence, temperature, and energy fluxes. The performance of the new multi-layer model was further compared against the existing single-layer model. Although the multi-layer model simulation results showed few or no improvements to both the nighttime energy balance and energy partitioning during winter compared with a single-layer model simulation, the increased model complexity does provide a more detailed description of the canopy micrometeorology of various forest types. The multi-layer model links to potential future environmental and ecological studies such as the assessment of in-canopy species vulnerability to climate change, the climate effects of disturbance intensities and frequencies, and the consequences of biogenic volatile organic compound (BVOC) emissions from the terrestrial ecosystem.
Subject: GLOBAL VEGETATION MODEL
FOREST CANOPY
PINE FOREST
DECIDUOUS FOREST
PLANT CANOPIES
SATELLITE DATA
BOREAL FOREST
CARBON UPTAKE
TIME SCALES
HEAT-FLUX
4112 Forestry
114 Physical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
gmd_9_2951_2016.pdf 833.7Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record