Figure 8
From: A new CAM6 + DART reanalysis with surface forcing from CAM6 to other CESM models
Time series of quantities derived from this reanalysis related to two observation platforms, as discussed in “Statistical representations of observation space performance”. The red circles and asterisks mark the number of observations available and assimilated (right axis) at each time (bottom axis). The black dots and line show the root mean square error of the model ensemble mean estimates of the temperature (K) relative to the observed temperatures (left axis). The green squares and line show the bias (model ensemble mean-observation). The lines in the RADIOSONDE_TEMPERATURE picture are intermittent because times with no data are not plotted. In the region shown there are often no radiosonde observations at 06:00 and 18:00 UTC. These quantities were derived from a subdomain of the model; south of \(20^\circ \) S and from the surface to \(\sim \) 965 hPa high. The numbers in the legend labeled with “grand” are statistics of the entire month of data. The fraction and percentage in the title represent the fraction of of observations used.
