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The ‘continuous’ experiment was proposed in 2004 and in 2007 had been run by 25 models or model variants. Prescribed fluxes are input to a transport model and a four year simulation is run with meteorological forcing appropriate for 2000-2003. Hourly CO2 concentrations are output for 280 locations. At 100 locations, CO2 profiles, surface fluxes and meteorological variables are also output.
The protocol (version 6) . It details the input fluxes, regridding instructions and lists of the output sites and required file formats. Instructions are included for accessing the ftp site for downloading input files and uploading model submissions.
model output
The model output is freely available for research purposes but please note the ‘conditions of use’ . The data are available in two formats: the original model submissions containing output for all sites and separate files for each site and model for which CO2 profiles were submitted. These files would be useful for those who are only interested in a small number of sites. Output files can be downloaded from anonymous ftp:
username: 'ftp'
password: ' ' yes, just a "return"
cd pub/cont_public
For full model submissions: cd modeloutput
For site files: cd sitefiles
publications and presentations
Law, Peters, Rodenbeck (2006), Protocol for the TransCom continuous data experiment technical report .
Law, R.M. et al. (2008), TransCom model simulations of hourly atmospheric CO2: Experimental overview and diurnal cycle results for 2002, Global Biogeochem. Cycles, 22, GB3009, doi:10.1029/2007GB003050.
Patra, P. et al. (2008), TransCom model simulations of hourly atmospheric CO2 : Analysis of synoptic-scale variations for the period 2002-2003, Global Biogeochem. Cycles, 22, GB4013, doi:10.1029/2007GB003081.
Ciais et al., Is the TransCom model ensemble representative of the observed CO2 short-term variability?, in preparation.
TransCom continuous experiment presentations at the 8th TransCom workshop, Purdue University, 2007, (Wednesday Session) .
Peters, W., presentation at the 7th TransCom workshop, Paris 2005.
for more information
Please contact one of the experiment coordinators: Rachel Law , Wouter Peters and Christian Rodenbeck .
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