We give a brief description of the Total Carbon Column Observing Network (TCCON), a new network of ground-based Fourier Transform spectrometers (FTS) dedicated to measurement of greenhouse gas absorption (CO2, CO, N2O, CH4) in the near infrared. We present preliminary retrievals of CO2 total column densities from the TCCON site in Lauder, New Zealand between July 2004 – when routine measurement...
