Sampling of space-based observations of XCO2 associated with biomass burning events

We use 20 years of AIRS observations of carbon monoxide as a tracer for biomass burning events and examine the density of successful observations of XCO2 from GOSAT, OCO-2, and OCO-3 correlated with these events. After the launch of OCO-2 and OCO-3 the density of space-based observations of Biomass burning events has increased. The planned launch of GeoCarb will further increase the density of these observations in the near future. However, space-based observations can be influenced by smoke, pyrocumulous, or other atmospheric phenomena. We will quantify how these selection effects impact XCO2 observations in the vicinity of large fires by separating the observations into polluted (high CO [dry-air ppbv]) and clean (low CO [dry-air ppbv]) regions using GOSAT, OCO-2, and OCO-3 observations matched up in time and space with AIRS observations.