The Shock of the Medieval Warming Period (950-1025)
One of the most interesting episodes during the Middle Ages was the Medieval Warm Period , sometimes called Crisis of the Late Middle Ages ( demographic collapse , political instability , and religious upheaval) . An important question is what we see in the data (from the Maddison Project ). Some agreement with the historical record helps us have confidence in the W_MA Model and the data it was based on. The data from the W_MA Model measurement matrix is presented above. Three state-space components explain 100% of the variation in the underlying indicators (Global Temperature, World Production and Population). Notes There are three versions of the W_MA BAU model: Unstable, Stable and Random Walk. Instructions are available in the R-code for running the three BAU models ( here ). W_MA Measurement Matrix The W_MA (Middle Ages) Measurement Model has two historical controllers and one growth...