Within the project “Effect of Megacities on the transport and transformation of pollutants on the Regional and Global scales” (EMeRGe), the measurement flight of 13 July 2017 was performed for comparison of the instrumentation onboard of the research aircraft HALO and FAAM. The aircraft flew for 1.6 h in close formation along a racetrack pattern at three flight levels in Southern Germany. The flight started in a rather dry and clean troposphere and ended in a more polluted convective boundary layer. 28 measurement pairs sampled on both aircraft were found suitable for comparison. 17 further pairs of data are available from sampling on either HALO or FAAM. In addition, observations obtained at the DWD Hohenpeissenberg and results from 6 models are included in the comparisons. Overall, about 30% of the measured data pairs show deviations within the combined error estimates. Some measurements deviate considerably from model results. This dataset contains a pdf of the report and a zip file of the comparison data as described in that report.

The reseach was supported by the Deutsche Forschungsgemeinschaft (DFG), in the HALO SPP 1294, and by the participating institutions (University Bremen, Deutsches Zentrum für Luft- und Raumfahrt, etc.)

{"references": ["Schumann, U., 2020 (Editor): Measurement and model data comparisons for the HALO-FAAM formation flight during EMeRGe on 17 July 2017. DLR Forschungsbericht, DLR-FB-2020-48, 188 pp."]}