Trends in net land carbon exchange over the period 1980-2010.

Following the studies of Le Quéré et al., 2009 and Sitch et al., 2008, a consortium of Dynamic Global Vegetation Model (DGVM) groups set up a project to investigate further the spatial trends in Net Biome Production (NBP) and agreed to perform a factorial set of DGVM simulations over the historical period, 1901 - 2010. Click on attachment link below for the Trendy experiment protocol.

To access further information on the Trendy experiment, links to forcing data, DGVM output and the Trendy data policy, click on 'Register' and complete the form, stating you wish access as a "Trendy" user. Please notify us on how you wish to use the data. You will receive an email with your username and password. Once approved, a second email will be sent confirming your account activation. You can then log in and use the Trendy GCP pages.

For further information regarding Trendy, please contact Stephen Sitch (

Published DGVM evaluation and application projects

This web site provides access to the data described in two studies:
Sitch, S., et al., (2008) Evaluation of the terrestrial carbon cycle, future plant geography and climate-carbon cycle feedbacks using 5 Dynamic Global Vegetation Models (DGVMs). Global Change Biology, doi: 10.1111/j.1365-2486.2008.01626.x. Published online: 9-Jun-2008