The DC-8 and ER-2 flew a coordinated mission over the CART site to measure radiation and to profile optically thick cirrus, and over Texas to measure convective cloud inflow and outflow. For the radiation part, both the ER-2 and DC-8 flew up and down wind legs over the CART site ending with the DC-8 near the cirrus base in position to ascend in altitude for cirrus profiling. Although, the DC-8 made numerous passes through its own contrails it was unable to remain in any of them due to the low visibility provided by the cirrus.