What is already known:
What this study adds:
Understanding carbon dioxide (CO2) sources and sinks provides us with the information necessary to con- trol the planet’s total warming. The planetary boundary layer (PBL) retains a significant amount of emissions. To understand local emissions, it is useful to partition CO2 emissions between the PBL and free troposphere. This paper analyzes model output data using the weather research and forecasting, vegetation photosynthe- sis respiration model (WRF-VPRM) and manned aircraft data collected in Lamont, Oklahoma. This analysis studies the vertical gradients of CO2 in the atmosphere as well as the seasonal and diurnal cycles of emissions. The results are compared to prior studies. The main drivers of CO2 in the PBL are investigated diurnally as well as for monthly averages.