The Total Carbon Column Observing Network

Author:

Wunch Debra1,Toon Geoffrey C.2,Blavier Jean-François L.2,Washenfelder Rebecca A.1,Notholt Justus3,Connor Brian J.4,Griffith David W. T.5,Sherlock Vanessa6,Wennberg Paul O.1

Affiliation:

1. Department of Earth Science and Engineering, California Institute of Technology, Pasadena, CA 91125, USA

2. Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA 91109, USA

3. Institute of Environmental Physics, University of Bremen, 28334 Bremen, Germany

4. BC Consulting Limited, Alexandra 9320, New Zealand

5. School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia

6. Department of Atmospheric Research, National Institute of Water and Atmospheric Research (NIWA) Ltd, Wellington 6021, New Zealand

Abstract

A global network of ground-based Fourier transform spectrometers has been founded to remotely measure column abundances of CO 2 , CO, CH 4 , N 2 O and other molecules that absorb in the near-infrared. These measurements are directly comparable with the near-infrared total column measurements from space-based instruments. With stringent requirements on the instrumentation, acquisition procedures, data processing and calibration, the Total Carbon Column Observing Network (TCCON) achieves an accuracy and precision in total column measurements that is unprecedented for remote-sensing observations (better than 0.25% for CO 2 ). This has enabled carbon-cycle science investigations using the TCCON dataset, and allows the TCCON to provide a link between satellite measurements and the extensive ground-based in situ network.

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

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