Lidar observations of Columnar Content of Atmospheric Carbon dioxide across frontal boundary in the Eastern United States

​Within this work, we are mainly interested to explore how does the columnar CO₂ content change across cold front boundaries. We used airborne lidar measurements of columnar CO2 measurements obtained during NASA-funded ACT-America (Atmospheric Carbon Transport-America) field campaign in summer 2016. Using the high-resolution measurements, we examine the nature of CO₂ variation and transport inside above the convective boundary layer (CBL). In particular, we used measurements obtained by MFLL (multi-functional fiber laser lidar) onboard NASA’s C-130 aircraft. We investigate the spatial variability of columnar CO₂ across the frontal boundary (i.e. warm sector versus cold sector) and compare these measurements with those taken by an in-situ instruments. The lidar measurement technique is desirable because it allows for simultaneous examination of the CBL and the FT.First, we establish a baseline spatial variation for the columnar data using measurements o