Fig. 1: Annual global-mean temperature anomaly during the Holocene based on reconstructions and a transient simulation.
From: Global temperature modes shed light on the Holocene temperature conundrum

The annual global mean temperature anomaly based on the reconstructions by Marcott3 (black curve), based on the reconstruction by Marsicek4 (red curve), based on the transient unfiltered simulation (gray curve), based on the low-pass filtered simulation (green curve), based on the low-pass filtered simulation over the pollen sites used for the Marsicek reconstruction (blue curve), based on the low-pass filtered simulation over the Marcott sites (cyan), and based on an artificial simulation dataset over the Marcott sites (orange). All time series have been adjusted to the simulation time period (6000 BCE to 1850 CE). The units are Kelvin. The y-axis on the left side also shows the temperature anomaly but with a finer scale for easier comparison of the curves over the last millennia. For the computation for the artificial simulation dataset please see text for details.