Penn State NATIVE Facility: Provided in situ measurements of O3, NO2, CO, SO2, and other measurements as well as several O3 profiles from ozonesondes AERI: University of Wisconsin instrument provided continuous measurements of boundary layer temperature and humidity In support of NASA’s GEO-CAPE mission, the CAPABLE site at NASA Langley Research Center has been established to assess the relationship between high temporal resolution measurements from space and continuous in situ surface observations. During Aug 2009, NO2 column density measurements of high temporal and high spectral resolution were made using a ground-based Pandora spectrometer concurrently with a suite of in situ trace gas measurements provided by Penn State’s NATIVE (Nittany Atmospheric Trailer and Integrated Validation Experiment) mobile research laboratory. Continuous boundary layer measurements of temperature, humidity and winds were provided using the University of Wisconsin Atmospheric Emitted Radiance Interferometer (AERI) and a wind lidar system. The use of this boundary layer information will provide valuable information relating spectrally derived NO2 column measurements to what is observed at the surface by the in situ instruments. We present preliminary results of the correlation of co-located NO2 column density with in situ NO2 throughout the diurnal evolution of the boundary layer. We will also compare with daily satellite NO2 column density from OMI and GOME-2.