Lagrangian transport modelling for CO2 using two different biosphere models G. Pieterse1,2, A. T. Vermeulen1, I. T. Baker3, and A. S. Denning3 1Energy research Centre of the Netherlands, Petten, The Netherlands 2Institute for Marine and Atmospheric Research Utrecht, Utrecht, The Netherlands 3Colorado State University, Fort Collins, USA
Abstract. In this work, the performance of the Framework for Atmosphere-Canopy Exchange Modelling (FACEM: Pieterse et al., 2007) coupled
to a Lagrangian atmospheric transport model is evaluated for carbon dioxide. Before incorporating FACEM into the Lagrangian
COMET model (Vermeulen et al., 2006), its performance for the European domain is compared with the Simple
Biosphere model (SiB3: Sellers et al., 1996). Overall, FACEM is well correlated to SiB3 (R2≥0.60),
but shows less variability for regions with predominantly bare soil. There is no significant overall bias between
the models except for the winter conditions and in general for the Iberian peninsula. When coupled to the COMET
transport model, both biosphere models yield similar correlations (R2≥0.60) and bias relative to
the 1-hourly concentration measurements for the year 2002, performed at three different sites in Europe;
Cabauw (Netherlands), Hegyhatsal (Hungary) and Mace Head (Ireland). The overall results indicate that
FACEM is comparable to SiB3 in terms of its applicability for atmospheric modelling studies.
Citation: Pieterse, G., Vermeulen, A. T., Baker, I. T., and Denning, A. S.: Lagrangian transport modelling for CO2 using two different biosphere models, Atmos. Chem. Phys. Discuss., 8, 4117-4154, doi:10.5194/acpd-8-4117-2008, 2008.