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Université de Fribourg

The importance of input data quality and quantity in climate field reconstructions – results from the assimilation of various tree-ring collections

Franke, Jörg ; Valler, Veronika ; Brönnimann, Stefan ; Neukom, Raphael ; Jaume-Santero, Fernando

In: Climate of the Past, 2020, vol. 16, no. 3, p. 1061–1074

Differences between paleoclimatic reconstructions are caused by two factors: the method and the input data. While many studies compare methods, we will focus in this study on the consequences of the input data choice in a state-of-the-art Kalman- filter paleoclimate data assimilation approach. We evaluate reconstruction quality in the 20th century based on three collections of tree-ring...