Variability of Phenology and Fluxes of Water and Carbon with Observed and Simulated Soil Moisture in the Ent Terrestrial Biosphere Model (Ent TBM Version 1.0.1.0.0)

摘要: Abstract. The Ent Terrestrial Biosphere Model (Ent TBM) is a mixed-canopy dynamic global vegetation model developed specifically for coupling with land surface hydrology and general circulation models (GCMs). This study describes the leaf phenology submodel implemented in TBM version 1.0.1.0.0 coupled to carbon allocation scheme of Ecosystem Demography (ED) model. adopts combination responses temperature (growing degree days frost hardening), soil moisture (linearity stress relative saturation) radiation (light length). Growth leaves, sapwood, fine roots, stem wood coarse roots updated on daily basis. We evaluate performance reproducing observed seasonal growth as well water fluxes four plant functional types at five Fluxnet sites, both prognostic hydrology, area index. able capture timing magnitude leaf-out senescence temperate broadleaf deciduous forest (Harvard Forest Morgan–Monroe State Forest, US), C3 annual grassland (Vaira Ranch, US) California oak savanna (Tonzi US). For evergreen needleleaf (Hyytiala, Finland), captures effect hardening photosynthetic capacity area. address importance customizing parameter sets response particular scheme. identify deficiencies that reveal important dynamics needs.