Eddy covariance

The eddy covariance (EC) system is an effective tool that IRRI uses in ensuring that the mitigation and adaptation options that the institute develops to minimize the impacts of climate change on rice production have also minimal environmental footprints. It is widely employed as the standard micrometeorological method that directly measures carbon dioxide (CO2), CH4, water vapor, and heat fluxes over a large area. On the minimum, the EC can cover a 100-m radius, which corresponds to a field size of 4 hectares. 

What does the EC system do?