Aircraft landings, departures, and running aircraft on the airport pad were found to
produce spikes in the half hourly CO2 flux and small spikes in CO2 concentration on many days
during the entire deployment of the AMF1 at GRW. This influence sometimes occurred
multiple periods in a day; this was typical of the year of data. The spikes range from only
several micromoles s-1 m-2 to one hundred or more for flux (a typical spike was in the
twenties) and near zero to 1.0 mmoles m-3 for CO2 concentration (typically around 0.15).
Occasionally an influence on water vapor density was detected, but this was fairly rare
and usually of very small magnitude.