“…The mean monthly latent heat flux (λE) -the energy used for evapotranspiration -from eddy covariance measurements from four research sites ("MEASURED") and 13 ecosystem models from the North American Carbon Program Site-Level Interim Synthesis (Schwalm et al, 2010). Sites: CA-Ca1 (Schwalm et al, 2007), CA-Obs (Griffis et al, 2003;Jarvis et al, 1997), US-Ho1 (Hollinger et al, 1999), US-Me2 (Thomas et al, 2009). Models: BEPS (Liu et al, 1999), CAN-IBIS (Williamson et al, 2008), CNCLASS (Arain et al, 2006), ECOSYS (Grant et al, 2005), ED2 (Medvigy et al, 2009), ISAM (Jain and Yang, 2005), ISOLSM (Riley et al, 2002), LOTEC (Hanson et al, 2004), ORCHIDEE (Krinner et al, 2005), SIB , SIBCASA (Schaefer et al, 2009), SSIB2 (Zhan et al, 2003), TECO (Weng and Luo, 2008).…”