CARB's Statewide Greenhouse Gas Research Monitoring Network

This page last reviewed July 10, 2014



The California Air Resources Board (CARB) initiated a Greenhouse Gas (GHG) Research Monitoring Network in 2010 to study the regional GHG emissions trends throughout the state, and evaluate the regional and statewide inventories to support the AB 32 program. These efforts rely on highly accurate and precise ambient measurement of greenhouse gases, which are analyzed using complex analytical tools. The network currently has seven CARB-operated monitoring stations located throughout California, and uses high precision analyzers to study methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O) emissions. The GHG Network instruments also measure carbon monoxide (CO), which is an excellent tracer for anthropogenic emissions.

In order to maximize the extent of the project and to better understand the statewide inventory, CARB is also collaborating with other researchers to expand the coverage of the GHG measurement network in California. Analytical and measurement collaborators include Megacities Carbon Project, Lawrence Berkeley National Laboratory, National Oceanic and Atmospheric Administration, Lawrence Livermore National Laboratory, University of San Diego, California Institute of Technology, and Jet Propulsion Laboratory (Los Angeles).

ARB Research Contracts:

ARB is funding the following research contracts that use the data generated by the research network to study greenhouse gas emissions:

  • Atmospheric measurement and inverse modeling to improve greenhouse gas emission estimates (11-306) - Marc Fischer [LBNL]
  • Inverse modeling to verify California's greenhouse gas emission inventory (09-348) - Marc Fischer [CSU-EB]

Research Papers:

  • Y.-K. Hsu, T. VanCuren, S. Park, C. Jakober, J. Herner, M. FitzGibbon, D.R. Blake, D.D. Parrish, Methane emissions inventory verification in southern California, Atmos. Environ., 44 (1) (2010), pp. 1-7
  • Jeong, S., Y.-K. Hsu, A. E. Andrews, L. Bianco, P. Vaca, J. M. Wilczak, and M. L. Fischer (2013), A multitower measurement network estimate of California's methane emissions, J. Geophys. Res. Atmos., 118, doi:10.1002/jgrd.50854.

For questions regarding GHG Research Monitoring Network or suggestions for website improvements,
contact Dr. Ying-Kuang Hsu at (916) 323-5774
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